OzVMX Forum
Marque Remarks => Yamaha => Topic started by: steveo247 on November 12, 2011, 10:42:06 pm
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While i am saving monies to build a 1976 DG racer type bike with dad, we are going to tidy up this little 1978 YZ 80E to go with our YZ400E.
It wont be a full restoration, just get it nice and reliable to flog around the paddock on.
I dont know where he got it, it just turned up one day after he went to melbourne to pick up something else!
Its a good looking little bike that looks to have had alot of use!
(http://i389.photobucket.com/albums/oo331/steveophotos/1978%20YZ%2080E/12112011411.jpg)
(http://i389.photobucket.com/albums/oo331/steveophotos/1978%20YZ%2080E/12112011412.jpg)
The tank is pretty dinged up, but the rust is not too bad no leaks at all.
(http://i389.photobucket.com/albums/oo331/steveophotos/1978%20YZ%2080E/12112011428.jpg)
The pipe looks pretty good too, with a few dings up front at usual.
(http://i389.photobucket.com/albums/oo331/steveophotos/1978%20YZ%2080E/12112011427.jpg)
Untill i turned the pipe upside down and this shit came out
(http://i389.photobucket.com/albums/oo331/steveophotos/1978%20YZ%2080E/12112011432.jpg)
I knew there was something funny about the right hand footpeg, but had never really had a proper look at it.
Its obviously broken off at some point and has been repaired, pretty poorly too. LOL
(http://i389.photobucket.com/albums/oo331/steveophotos/1978%20YZ%2080E/12112011429.jpg)
(http://i389.photobucket.com/albums/oo331/steveophotos/1978%20YZ%2080E/12112011435.jpg)
(http://i389.photobucket.com/albums/oo331/steveophotos/1978%20YZ%2080E/12112011443.jpg)
But i cut the square bar stock off the end and may be able to re use the footpeg.
I think they are supposed to bolt on, but these have been welded. there is a complete footpeg mount/bar on fleabay USA i might grab if i cant repair this one to my liking.
(http://i389.photobucket.com/albums/oo331/steveophotos/1978%20YZ%2080E/12112011451.jpg)
(http://i389.photobucket.com/albums/oo331/steveophotos/1978%20YZ%2080E/12112011454.jpg)
The swingarm has a peice of rhs welded to the top mount to give the ass end more clearance, i dont mind the idea but its done pretty badly and ugly so i will tidy it up.
you can kind of see it in this picture, at the top where it bolts to the shock. but i will get a better one of the swingarm soon.
(http://i389.photobucket.com/albums/oo331/steveophotos/1978%20YZ%2080E/12112011410.jpg)
and this is how it sits a few hours later.
(http://i389.photobucket.com/albums/oo331/steveophotos/1978%20YZ%2080E/12112011461.jpg)
the parts i need to fix/replace or missing altogether are (that i know so far) are -
Foot peg mounts/crossbar.
top exhaust mount.
rear exhaust mount
air filter
carb to air box boot.
both tyres
gear lever shaft
kick starter shaft (both were stuffed but hadnt been welded on)
rear brake rod
both rear axle adjusters are bent, one beyond repair the other maybe
thats all i can think of but if anyone has any of those parts im in the market for them..!
Next is to clean the wheels up (going to try and do it without dismantling them)
fix the footpeg mounts so frame can be powder coated.
Enjoy!
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Steveo,
Are you sure you want to squander some of your savings on this basket case. I've been there done that. Beileve me, starting a project from this standard, will cost more than you would want to part with. The desire is there, but soon you will find that the time and money spent, would have been better off towards your 76 DG racer bike. Good luck and hope you enjoy.
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Steveo,
Are you sure you want to squander some of your savings on this basket case. I've been there done that. Beileve me, starting a project from this standard, will cost more than you would want to part with. The desire is there, but soon you will find that the time and money spent, would have been better off towards your 76 DG racer bike. Good luck and hope you enjoy.
Yeah i thought about that. Hopefully i can keep the spending in check, i have a figure in mind based on a full motor rebuild and if i can stick to the budget and get it to a good fun bike ill be happy.
Im sure i will wish i had listened to you in a few months!
I had a busy day doing stuff around the house / pub lunch for a bday but i managed to get a little bit done.
degreased the swingarm and pressure washed the frame and swingarm. The frame has multiple cracks in it!
swingarm has alot of chain damage. But its very useable for what i want.
(http://i389.photobucket.com/albums/oo331/steveophotos/1978%20YZ%2080E/13112011464.jpg)
The chain guide had worn out totally and so the chain had damaged the swingarm..
(http://i389.photobucket.com/albums/oo331/steveophotos/1978%20YZ%2080E/13112011465.jpg)
and came up pretty good for my low skill level i thought!
(http://i389.photobucket.com/albums/oo331/steveophotos/1978%20YZ%2080E/13112011469.jpg)
swingarm after a duel with the wire brush and file. I havnt decided what to do with the shock mount yet, as hopefully i can find a shock from another bike that i can make fit and use, so i might have to modify the mount.
(http://i389.photobucket.com/albums/oo331/steveophotos/1978%20YZ%2080E/13112011472.jpg)
the bash plate had cracked and you can see more of the great footpeg mount. Now i have seen how the footpegs are supposed to be i will cut it totally off.
(http://i389.photobucket.com/albums/oo331/steveophotos/1978%20YZ%2080E/13112011473.jpg)
Right over where the footpeg is supposed to bolt to, they had welded a brace for the makeshift mount they made.
Cut it off and clean it up and i should be able to use the bolt hole, gotta get my tap set from dads.
(http://i389.photobucket.com/albums/oo331/steveophotos/1978%20YZ%2080E/13112011476.jpg)
(http://i389.photobucket.com/albums/oo331/steveophotos/1978%20YZ%2080E/13112011479.jpg)
This was the worst spot on the frame.
(http://i389.photobucket.com/albums/oo331/steveophotos/1978%20YZ%2080E/13112011480.jpg)
Im not a good welder but its nice and strong now with all the current cracks welded up.
(http://i389.photobucket.com/albums/oo331/steveophotos/1978%20YZ%2080E/13112011481.jpg)
So now frame and swingarm are ready to be blasted, and i will look into the frame strengening kits!
(http://i389.photobucket.com/albums/oo331/steveophotos/1978%20YZ%2080E/13112011484.jpg)
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Go for it, so what if you spend a bit more than you want, your skill level looks ok and will only get better doing what you are doing its a cheap leason for good skills for life and then there is the satisfaction ;) lets face it there is something special about brining bikes back to life, all the best on your quest ;D
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thanks shelpi! i agree with you.
Work on the bike has been slow due to changing jobs at the moment!
But have collected -
new swingarm bearings.
new steering bearings.
carby to airbox boot
front and rear spokes - NOS for 65 bucks delivered.
footpeg crossbar setup.
and gear shift shaft with good splines.
Got the frame back from sandblasting and got it into some primer.
(http://i389.photobucket.com/albums/oo331/steveophotos/Mobile%20Uploads/29112011532.jpg)
the footpeg crossbar i got was a bit bent, i straightened it a bit but its still a bit twisted.
but i got it on -
(http://i389.photobucket.com/albums/oo331/steveophotos/Mobile%20Uploads/03122011537.jpg)
and then made sure the motor still fit, which it didnt do it needed more 'adjusting' untill it did.
(http://i389.photobucket.com/albums/oo331/steveophotos/Mobile%20Uploads/03122011542.jpg)
also the bore is on 1st oversize which is a bonus, i was certain it would have been last. Its got a few scratches so it will be taken to second?
(http://i389.photobucket.com/albums/oo331/steveophotos/Mobile%20Uploads/13112011491.jpg)
Went for a drive and picked up a new toy aswell, that i happen to have a nice swingarm for :D
(http://i389.photobucket.com/albums/oo331/steveophotos/Mobile%20Uploads/03122011545.jpg)
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:D AHH good work, looks like you are haveing to much fun ;) good score what bike is that a YZ125D? THAT SWINGARM is a beaty, those parts you got sound like a steel that just makes it sweeter and 1st oversize another bonus. all the best on your quest. cheers
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Thanks mate.
Yep its a yz125D. but it has a 175 bottom end (It or MX cant remember at the moment) but the barrel and DG head are 1977 yz125.
It rides great as it is so i wont be playing with it much untill i finish the 80e! I'll prob fit the swingarm!
I also just got a NOS crankshaft for the yz80e from fleabay for 76 bucks.. cost more than that for an aftermarket rod kit let alone fitting and pressing the bearings. bargain.
I might have a go at rebuilding this motor myself, ive never built a motor i always get my awesome local bike mechanic to do it.
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had a bit of time between jobs today, got the hub cleaned up and in primer.
(http://i389.photobucket.com/albums/oo331/steveophotos/Mobile%20Uploads/16112011496.jpg)
(http://i389.photobucket.com/albums/oo331/steveophotos/Mobile%20Uploads/05122011548.jpg)
(http://i389.photobucket.com/albums/oo331/steveophotos/Mobile%20Uploads/05122011549.jpg)
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yer why not rebuild the motor yourself, your skill level looks good from here, take your time get a good manual if you havn't already got one, ask lots of questions and i am sure that you will build a great little engine. ahh good stuff yep you sure have saved money and time with the crank (way to go) hope to seeya in the pre 1978 class one day ;) keep up the good work, all the best on your quest, from an old young man :D cheers pete
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Yep, rebuild the motor yourself. As Shelpi said if you've got a good manual and ask the right questions on here it will be a peice of cake ;)
I had never done it before and the guys on here talked me through my first one. After that there was no stopping me ;D
Occasionally I have to take things to the pro's but not very often ::). It is a great learning experince and makes it even more rewarding when you first go to start it and it fires second kick 8) Save heaps of dollars as well ;)
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GEE!
that 125D looks like a good score too! 8)
as kids, i had the YZ80D and my mate had the YZ80F.
both were great bikes.
i agree with the other blokes too,
take your time and have a go at doing your own motor.
even if it gets too much for you, you still gain knowledge and experience for next time ;)
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I took the YZD for a ride yesty and its a really nice bike! WAY better than a C or X.
Oxalic acid bath time.
(http://i389.photobucket.com/albums/oo331/steveophotos/Mobile%20Uploads/05122011551.jpg)
(http://i389.photobucket.com/albums/oo331/steveophotos/Mobile%20Uploads/06122011553.jpg)
fork on right not been done yet but both were in same condition. They are still buggered due to the pitting but i wont be re chroming them yet due to this being a budget build.
(http://i389.photobucket.com/albums/oo331/steveophotos/Mobile%20Uploads/07122011558.jpg)
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Hi Steveo
Nice to watch your rebuild on the 80E as we had one way back then. It was our first taste of a powerband. Great little bikes and very popular at the time. They did have a problem though with the frame cracking around the swing arm mounting area. Yamaha brought out a kit (see ebay link) to strengthen it but ours still cracked.
http://www.ebay.com.au/itm/110583451290?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1438.l2649
(http://i380.photobucket.com/albums/oo249/vmxwoody/2bikes1c1.jpg)
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YZ 250H Hit the nail on the head, yep we are all hear to help , actualy im jelous :'( you are so advanced compared to me when i was your age ;) keep up the good work and i am looking forward to the next segment on your rebuild, all the best on your quest.
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iam watching to, just picked up 4 yz80's, 2e's and 2f's
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Hey woody, thats photo is awesome mate thanks very much for putting that up! love the datto!
I have seen the frame strengthening kits, and i am going make my own gussets to go on. Or maybe i'll get lazy and buy one from fleabay.
thanks shelpi. and foxy get some pics of the 80's up!
The other fork leg is going to come out of the acid when i finish posting this. They are pretty bad so i may need to swap em for some others or last out and re chrome them.
Next will be to get the front wheel pulled down, paint the hubs and get em re laced with my NOS spokes. still pretty stoked that i got some NOS genuine spokes cheaper than those chinese/thai spokes!
Hopefully some pics on sunday!
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(http://i1206.photobucket.com/albums/bb445/fox8062/YZ80.jpg) the a frame on the esky which has been painted already and box of bits. will be playing withthem this weekend.
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they look great foxy!
the one on the left looks mint.
my YZ 80E build might have just been placed down the list. I have aquired a new bike that i want to rebuild, as it will be my 'modern' rider.
going out with my mates on their late model 4 strokes is fun, but the suspension and brakes on my YZ250K slows me down. So if i rebuild this 1992 YZ250D1 i will have better suspension, disc brakes and it will still be retro cool 8)
So i might get the yz80e to rolling stage, while i fix the 250. Still undecided.
Best bit is the 1992 YZ250 only cost me an hours labour ;D
(http://i389.photobucket.com/albums/oo331/steveophotos/Mobile%20Uploads/09122011561.jpg)
(http://i389.photobucket.com/albums/oo331/steveophotos/Mobile%20Uploads/07122011557.jpg)
(http://i389.photobucket.com/albums/oo331/steveophotos/Mobile%20Uploads/08122011559.jpg)
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ya that one is standard never touched. got the motor back in the e on the weekend, it came will a lot of New Yamaha parts supplied years ago, front and rear spokes, new side case for the left side, new foot pegs and mount, new chain runner, brake stay arm, spring and pivot, the list goes on. Bottom end is fine so will freshen the top end up only, got new base and head gaskets. Even new side case screws....front fork tubes have been re chromed. Rear shock has already been done.
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YZ80e mototek CDI unit
http://www.ebay.com.au/itm/Yamaha-YZ80e-mototek-CDI-unit-vmx-yz125-old-trail-bike-/290645629932?pt=AU_Motorcycle_Parts_Accessories&hash=item43abd45bec
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YZ80e mototek CDI unit
http://www.ebay.com.au/itm/Yamaha-YZ80e-mototek-CDI-unit-vmx-yz125-old-trail-bike-/290645629932?pt=AU_Motorcycle_Parts_Accessories&hash=item43abd45bec
was that yours woody? The bugger ended the auction early.
Why do they put them up on ebay if they dont wanna sell it?
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not mine, send him a message via ebay and ask him if he still has it.
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been busy with other things lately! House, changing jobs more than once, tons of work blah blah blah!!
But painted some stuff, got the wheels pretty shiny. They are in really good condition!
Laced one up, hopefully have time to do the other one on the weekend.
(http://i389.photobucket.com/albums/oo331/steveophotos/Mobile%20Uploads/12012012622.jpg)
(http://i389.photobucket.com/albums/oo331/steveophotos/Mobile%20Uploads/12012012625.jpg)
(http://i389.photobucket.com/albums/oo331/steveophotos/Mobile%20Uploads/12012012624.jpg)
Spokes only finger tight i will get a mate with a jig to true them for me.
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Steveo, What is the oxalic acid bath? It done a bloody good job on that bolt :)
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smed, its takes rust off chrome! doesnt affect stickers leaves them on. Best stuff.
I buy it in this form from bunnings / mitre 10.
http://www.recochem.com.au/index.php/products/consumer_products/timber_care/item/diggers_oxalic_acid
give it a soak for 24 hours and watch the rust disapeer! Its used for cleaning timber.hts only good on chrome tho, too harsh on other stuff.
Do a google search for more info!
Did a great job on the forks too, a pity it leaves the pitting but at least it wont get any worse now.
(http://i389.photobucket.com/albums/oo331/steveophotos/Mobile%20Uploads/07122011558.jpg)
I got the other wheel done a mate is going to true them up for me now.
(http://i389.photobucket.com/albums/oo331/steveophotos/Mobile%20Uploads/13012012631.jpg)
Also started getting one fork leg cleaned up.
(http://i389.photobucket.com/albums/oo331/steveophotos/Mobile%20Uploads/15012012652.jpg)
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(http://i389.photobucket.com/albums/oo331/steveophotos/Mobile%20Uploads/15012012656.jpg)
(http://i389.photobucket.com/albums/oo331/steveophotos/Mobile%20Uploads/15012012663.jpg)
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Does anyone know of a good flywheel puller that will suit the yz80?
I have a universal one that doesnt quite sit right, 2 of the 3 legs sit good but one is on the thin steel part and this flywheel is on tight! I dont wanna break it.
actually maybe if i dont get a reply i might start a new thread asking what tools people would reccomend for building the engine yourself.
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Does anyone know of a good flywheel puller that will suit the yz80?
I have a universal one that doesnt quite sit right, 2 of the 3 legs sit good but one is on the thin steel part and this flywheel is on tight! I dont wanna break it.
actually maybe if i dont get a reply i might start a new thread asking what tools people would reccomend for building the engine yourself.
Can you post up a picture of the flywheel ? there should be provision on the flywheel to attach a puller, sometimes there will be an internal thread around the centre or several holes to screw into.
I wouldn`t use a puller on the outside of the flywheel you may distort it beyond repair. Peter.
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Good job Stevo,i finally bit the bullet and sent my YZ80H forks off to Rad Had Chroming to be done,it will be the most expensive part of the rebuild but i wanted to get the bike to the roller stage and that was holding me up.
cheers Dale.
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Hey dale, that sounds good mate. I wanted to get these ones re chromed but im trying to keep this a budget build! And they actually work really well as they are.
Here is a picture of the flywheel peter.
(http://i389.photobucket.com/albums/oo331/steveophotos/Mobile%20Uploads/14012012642.jpg)
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the universal one should fit (like the ones on XR75's) it has a large left hand male fine metric thread.
if you undo the retaining nut you can see if there is internal thread "inside the flywheel" where the retaining nut was.
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Retaining nut is now undone hoony, and the flywheel doesnt have an internal tread (that is for the bole type pullers right?)
Ill have a look for a universal xr75 type. The ebay special universal one dad has doesnt fit
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Steveo247 , ask at any yamaha dealer or most bike shops the yz80 uses the standard yamaha flywheel puller . if you run your finger around the inside of your f/wheel the threads are very fine if covered in dirt or grease its likely you wont feel them .(tooth brush and wd40 )
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the universal one should fit (like the ones on XR75's) it has a large left hand male fine metric thread.
if you undo the retaining nut you can see if there is internal thread "inside the flywheel" where the retaining nut was.
As Hoony and iainyz has mentioned there should be a fine left hand thread in the centre of the flywheel, xr75 flywhell puller will fit that thread. Peter.
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Post a photo of it Steve so we can all have a look ;)
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Post a photo of it Steve so we can all have a look ;)
It`s the last picture on page 2. ;)
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WOW good work its all looking great, your doing a dam fine job, arya havin fun or what :D
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Post a photo of it Steve so we can all have a look ;)
It`s the last picture on page 2. ;)
Thanks Pete. pays to read the whole thread from where you left off last time ::)
Super fine thread on the inside of the flywheel will definitely be there as per what everyone else has said.
I will shut up now :-X
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ok now to move out of the Piano room so you blokes can get back to playing scales ;).
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ok now to move out of the Piano room so you blokes can get back to playing scales ;).
Hoony,
your`e trespassing don`t be throwing those broken cr500 cranks around in the Yamaha section. ;D
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OOps sorry, did read all threads, sounded like the thread thing was well covered, so hey great job :D looking forward to the future when the YZ80E is all together ;)
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Thanks gentlemen! Yes indeed there is threads in there. I had to look 2 or 3 times! the dirt n crap had almost made them invisible.
Will get em cleaned out and see how i go getting it off.
(http://i389.photobucket.com/albums/oo331/steveophotos/Mobile%20Uploads/19012012668.jpg)
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good luck mate, it looks rusty in there. let us all know how you get on.
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This may sound a bit dodge, but I rigged up a piece of coathanger to clean out threads like this. You get an offcut about 200 mm long, bend it in half, then bend the last 5-10mm of each end in the opposite direction, so they oppose each other. Then you sharpen the two ends to a flat with a grinder and you've got something you can tension up so it bites into the threads a bit (by opening up the original loop) and twist around in an awkward spot like this to clean out the threads. It's not as good as tapping the thread obviously but it works.
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What other magic can you work using a coat hanger Dr Mainline? ;D ;D Liberate locked keys from cars?
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Forksprings?
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Get a thread file , it has on the end a set of teeth that fits inside and does the job properly . do it right because if you bugger the thread its a bitch to get the flywheel off .
Iain
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to get rid off the rust clean with non residuos solvent ie thinners then use citric acid it only consumes metal oxide (rust) wash with soapy water (alkaliod) to neutralise then add lube, machine oil, penertrene or better still a rust inhibiter, citric acid is found at the super market in the food ile with ya spices and stuff, use a test peice of rusty metal first. all the best on your quest. ;D
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have not touched the bike for aggggeeesssss!
Have a list of excuses as long as your arm but the bottom line is did a little bit lately.
I cut the crap extention off the swingarm and welded my own on.
I didnt take any measurements and its gona cost me now as i have to make it shorter.
(http://i389.photobucket.com/albums/oo331/steveophotos/Mobile%20Uploads/04042012805.jpg)
An you can see in this pic it has changed the angle of the rear shock too much and doesnt line up wit the rear guard.
Easy fix just annoying.
(http://i389.photobucket.com/albums/oo331/steveophotos/Mobile%20Uploads/04042012807.jpg)
Oh also yes thats the rear shock i am going to use.
$60 delivered off fleabay worth a try.
Than the puppy came in for a sniff.
(http://i389.photobucket.com/albums/oo331/steveophotos/Mobile%20Uploads/04042012802.jpg)
And a buddy of mine made this for me for my outdoor bar.
I love it.
(http://i389.photobucket.com/albums/oo331/steveophotos/Mobile%20Uploads/24032012780.jpg)
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Love your work.
The banner is cool 8). Make sure you take that to CD9 if you go. Then guard it with your life ;D
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thanks mate, i will be at cd9! its only half hour from my house ;D
Shortened to fix the shock angle.
(http://i389.photobucket.com/albums/oo331/steveophotos/Mobile%20Uploads/09042012815.jpg)
and swingarm on!
(http://i389.photobucket.com/albums/oo331/steveophotos/Mobile%20Uploads/15042012838.jpg)
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My performance part collection is growing too.
(http://i389.photobucket.com/albums/oo331/steveophotos/Mobile%20Uploads/04042012799.jpg)
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What a great job on what was such a case! It's a credit to you, keep up the good work!
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Thanks ando, having fun!
But nearly have all the parts (and funds) to build the DG racer so i might put it aside soon.
I did get some levers and perches to put on tho.
Think i will leave the tank as is for 2 reasons, The budget for the bike and 2 - its totally original.
(http://i389.photobucket.com/albums/oo331/steveophotos/Mobile%20Uploads/20042012855.jpg)
The petcock however is not in good shape.
The nut that holds the petcock to the tank, which has the 2 threads (one to the petcock itself then the top one that screws onto the tank)
The top thread that screws onto the tank is stripped on the nut. They had a heap of thread tape on it, but i am wondering what i can do to fix it ? I dont know how to fix an internal thread, ill do some google searching.
Any ideas?
can get a picture of what i am rambling about if needed.
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Find another tap, thought it was more common for the threaded boss on the tank to be damaged
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Its looking good - Just wondering what brand tyres you fitted to it