Author Topic: gtmx80 fork repair  (Read 4668 times)

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Offline jimg1au

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gtmx80 fork repair
« on: December 18, 2008, 06:29:24 pm »
how do you pull the forks apart to stiffen the springs up.i have these on my slider
cheers
jimg
pics to come

lms6201

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Re: gtmx80 fork repair
« Reply #1 on: December 18, 2008, 07:21:59 pm »
i think the seal holder unscrews from the steel fork lower , like a big round nut

Offline paul

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Re: gtmx80 fork repair
« Reply #2 on: December 18, 2008, 07:33:46 pm »



Offline jimg1au

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Re: gtmx80 fork repair
« Reply #3 on: December 19, 2008, 11:04:28 am »
can anyone verify that these are gtmx80 forks.
thanks

Offline vandy010

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Re: gtmx80 fork repair
« Reply #4 on: December 19, 2008, 11:18:39 am »
Jim,
check out http://www.yamaha-motor.com/sport/parts/home.aspx
 step 1, then 2 etc and see for yourself.
hope this is of some use
"flat bickie"

Offline frostype400

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Re: gtmx80 fork repair
« Reply #5 on: December 19, 2008, 12:17:03 pm »
definetly gt80ormx80 forks i know because i have some off my gt80 out in the shed
1971 tm400 and PE's

Offline jimg1au

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Re: gtmx80 fork repair
« Reply #6 on: December 19, 2008, 01:28:57 pm »
thanks for the replys just wanted to check with some who has a set
cheers
jim

kristan

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Re: gtmx80 fork repair
« Reply #7 on: December 21, 2008, 09:54:35 pm »
now here is the realy weird thing about these forks!!! they only have a spring in one leg!!! WTF! why the hell would yamaha do that?

Offline frostype400

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Re: gtmx80 fork repair
« Reply #8 on: December 21, 2008, 10:04:10 pm »
really kristan i will have to check mine out when i get them done i will get new tubes and two springs doesnt make sense to just have one mine feels as if it doesnt have one in the right hand side when sitting on the bike what about yours?
1971 tm400 and PE's

Offline BETRIC

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Re: gtmx80 fork repair
« Reply #9 on: December 22, 2008, 07:38:00 am »
MX & GT 80 HAVE ONE SPRING AS STANDARD IN THE FORKS ;)
DELTEK, 72 MINI TRAIL, 73/4 XR75, 77/78 XR75, DG MONOSHOCK FRAME XR75, REDLINE FRAME XR75, PK RACING MONOSHOCK FRAME XR75, JWRP XR FRAME, SL70K1, 81 CR80RB, TY80A/B, YZ80A/B/D, GT50/80A, GTMX80A, 73 GTMX, GT1, COOPER MX, COOPER ENDURO,MX360A,MX250B,YZ125X MX100, 72 XL250, TC100,TL125, TY250C,IT250J

Offline BJJ

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Re: gtmx80 fork repair
« Reply #10 on: December 22, 2008, 07:52:52 am »
I have a new set of aftermarket fork seals if anyone likes them.  $5.00 plus postage.  PM me.

Offline jimg1au

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Re: gtmx80 fork repair
« Reply #11 on: December 22, 2008, 07:57:43 am »
can 2 fork springs be fitted as there are 2 in later dt80 forks.they use the same spring according to zedder and yamaha usa

 billjackjane  pm sent re fork seal

Offline frostype400

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Re: gtmx80 fork repair
« Reply #12 on: December 22, 2008, 08:25:20 am »
ill be putting two in mine any way does any one have some decent tubes for gt80 or mx80 or dt80 they are all the same or can you get new ones. thanks Michael :)
1971 tm400 and PE's

kristan

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Re: gtmx80 fork repair
« Reply #13 on: December 22, 2008, 06:03:58 pm »
Michael,
the forks are designed to only have one spring by the looeks of it! the two slidrs are differant. basically you cant put another spring in the other side as the fork tube is solid on the bottom! the only way to get  springs in there is to get another tube the same as the one with the spring in. from my many hour of trawling the net i have found out that the forks were use on a yamaha chappy, maybee others?
The tubes are still available from yamaha for the princley sum of $250 each tube. This is a crap price i know, but it also means that they are still being used on bikes recently!
hope this makes sense? I am in the market for a pair of fork tubes too so i will keep you posted on my progress. like wise if you come across anything interesting let me know?
oh my yamaha dealer had all the exploded diagrams and parts list on their computer (result!)

Offline frostype400

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Re: gtmx80 fork repair
« Reply #14 on: December 22, 2008, 06:34:12 pm »
$250 is more than a bit to expensive for me i only need five more parts and im ready to do it throttle seat base indicators speedo and tail light bracket do you reckon if i take it some where to have the forks done they will be able to source some similar tubes for me thanks Michael. :)
1971 tm400 and PE's