Messages

91

Honda / Re: 84 CR250 Extra Cotters??

« on: March 03, 2014, 06:35:46 pm »

You don't mean Circlips do you. Cotter pins might be split pins, circlips, or any other type of fencing wire!

Even left with one is going to be scary! Some of those two might live on the inside of the cases!!!!!

Peter B

92

Yamaha / Re: Interesting Piston mods? - 250H

« on: January 24, 2014, 10:19:38 pm »

If you look at the other side of the piston it appears to be cut away like a YZ is. The pistons definitely the right way around, the bloke who drilled the holes should have been drilling his own skull to let out the pressure! Massive brain fart

93

Yamaha / Re: Interesting Piston mods? - 250H

« on: January 24, 2014, 12:50:21 pm »

So do they line up with the exhaust port?

Didn't think that the H had a bridge in the exhaust port!!!!

I know, they are using the back pressure wave from the pipe to supercharge the crank case. Drill the middle hole out to 15mm to take advantage of the pressure wave!

Peter B

94

For Sale / Re: Junk.

« on: January 22, 2014, 10:27:56 pm »

Nathan
I'll take the internal rotors (125 and 250), MX250 head and AT1 seat.

Peter B

95

Competition / Re: AMA Supercross round 2

« on: January 12, 2014, 06:23:12 pm »

And for the poor people with no cable and some time to wait till its posted!

https://www.youtube.com/channel/UC3OUvg-GVNn54viz8PKFL_w

Peter B

96

Yamaha / Re: YZ 490 Jug info please

« on: January 05, 2014, 12:09:19 am »

Hi Silverfox.
All the information you will ever need is in the site below.
http://advrider.com/forums/showthread.php?t=772033&page=12

Lots of info and does get side tracked but all good info. You just have to go through the 22 pages and find the section your after.
Peter B

97

Vinduro / Re: IT 200 Bearings

« on: November 22, 2013, 04:31:51 pm »

Ted

Ebay Jono in Queensland

http://www.ebay.com.au/itm/SWING-ARM-BEARING-KIT-SUITS-Yamaha-IT200-84-to-86-IT250-83-to-84-/131037962591?pt=AU_Motorcycle_Parts_Accessories&hash=item1e8278a15f#ht_3501wt_1164

Call him, nice bloke.

Regards

98

Tech Talk / Re: Honda XR250 balance Shafts

« on: November 13, 2013, 11:02:44 pm »

Stewart
Leave the balance shaft in.

I've heard many stories, mainly 500 and 600 letting go after they have had the balancers removed. The idea of riding an XR is to be reliable and work with what you can not leave bits out hope you finish!

Find a cam and HC piston, mikuni carb and hang on!!!

Peter B

99

Wanted / Re: YZ 400 D wanted

« on: November 12, 2013, 07:28:17 pm »

Simon

Clutch cable holder that bolts to the bottom of the barrel is the same on the DT250/400 YZ250/400 and IT250/400 for 1977 and 1978.

http://www.boats.net/parts/detail/yamaha/Y-1M1-15441-00-00.html

Peter B

100

Wanted / Re: YZ 400 D wanted

« on: November 12, 2013, 07:24:00 pm »

Most of the bottom end stuff on the 400's is interchangeable. The main differences are the gear sets, clutch plates (number of)/friction plates/springs. Top end is totally bland on the DT400. Barrels are different in port timing, pistons also different. All this can be changed to make pretty close to the real thing (YZ).

YZ250D and YZ400E gear sets are the same. For the matter so will IT250D and 400D gear sets fit but different gear spread. YZ250E are different all together.

With a bit of time the DT400 can be jazzed up a lot. Or just keep it as a parts donor.

Peter B

101

eBay Finds / Re: Indian scrambler?

« on: November 10, 2013, 08:57:13 pm »

From the looks of it this one is a baby.

http://www.indiandirtbikeparts.com/indianlineup.html

1969 50cc Indian Super Scrambler.

At $1500 it might just stay in his shed for another 25 years.

Don't know what engine that had before 1970!

Peter B

102

General Discussion / Re: IT forum

« on: November 02, 2013, 05:15:16 pm »

I had trouble too. The question was the colour of one model IT guards.

I do know that if you email the moderator he'll sort it out.

Peter B

Looking for the magic stuff that changes green IT's to Blue??

103

Yamaha / Re: YZ250D fork top out springs - urgent advice required please

« on: October 25, 2013, 10:47:12 am »

Simo
Can you put a photo up when you have finished this mod. I'm interested in the damping rod.

I'm running heavier main springs with standard 2 springs (as above) and YSS valves. Not totally happy with the how they work and looking at other options or improvement.

Thanks
Peter B

104

Yamaha / Re: connecting rod dt-1

« on: October 23, 2013, 12:17:19 pm »

Hi All

431-11651-00-00 ROD, CONNECTING - use "prox" no. 03.2304 yamaha yz250 '83-89 (24y-11651-01) with washers.

http://www.boats.net/parts/detail/yamaha/Y-431-11651-00-00.html

http://www.ebay.com.au/itm/ProX-Connecting-Rod-Kit-03-2304-/390675808751#ht_1612wt_1164

Good Luck

Peter B

105

Yamaha / Re: Yamaha IT465 ignition on RT1

« on: October 03, 2013, 02:21:17 pm »

Firko
The base plate on the DT1/RT1 has 3 mounting screws, the one in the photo has 2.
The taper is different but how much I'm not sure. It would be easier for yourself to find a DT / YZ / IT pre 1980 type which has the 3 mounts and the right taper.
Roy Dale off this forum had a DT250D-G electrics available (South Coast NSW). I'm running a DT250G system on my RT1. Any of the CDI's (DT/YZ/IT) from the same vintage will work well. I don't see much if any variation in the ignition curve. I've tried both DT250G and a YZ400D CDI's on RT1 and I can't pick any difference. Both rev well and both pull from right off the bottom. I run the DT all the time now.

If you want to stay with the IT system you have then Vandy has used the small taper flywheel. He knows whats needed.

Peter B