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Mysterious HRC chambers, need help!!


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Suntum
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Mysterious HRC chambers, need help!!

Tue Jul 01, 2014 9:43 am » Post: #1 » Download Post

SO I bought this strange 89 model 250, R5K? Or whatever it is you call them in Europe

It had these chambers on it. The left side fit perfect in the same exhaust mounts as any other chamber, not the mount on the silencer though, that mount was hanging a couple of inches lower. No problem though, that happens with after market chambers especially on the 89 or R5K bikes

My real problem is this RHS chamber. it is so weird that I am doubting it is even off an NSR, the previous owner had made his own brackets from bend steel, they weren't very pretty and also the RHS chamber was so low it almost dragged on the ground

The mounts don't line up at all

This one would be sitting right towards the back of the frame, right in the middle of the two rear suspension mounts

 photo DSC_6993_zps4bf43ef0.jpg

This big lump in the middle would hit the bottom of the rear shock just about where my finger is pointing

 photo DSC_6995_zpsc81c9e27.jpg

This next photo might show it a bit better

 photo DSC_6994_zps76bfa451.jpg

The pipe goes straight back from the exhaust port, then it curves in towards the middle of the bike, just to swing back out so far back that it would hit the shock on any NSR as far I can see

It is a little flat spot where it is supposed to be closest to the ground, like some chambers have, I am marking it with my fingers, the rust below is where it would have been hitting curbs and ramps and thing like that

 photo DSC_6992_zps9161b1ec.jpg

few more photos

 photo DSC_6991_zps1ce1adcd.jpg

 photo DSC_6990_zps952da4fb.jpg

 photo DSC_6989_zpsed914bf4.jpg

 photo DSC_6988_zps96ba3aa2.jpg

 photo DSC_6987_zps6e883253.jpg

 photo DSC_6986_zps88dc95b3.jpg

SO my question to you fellas is; What are these chambers, and what are they supposed to be sitting... Please don't PM me they are Chinese and you will give me 30 USD for them Wink
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silikesguiness
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Tue Jul 01, 2014 12:49 pm » Post: #2 » Download Post

possibly honda rs 250 pipes?
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Andy
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Fri Jul 04, 2014 2:21 pm » Post: #3 » Download Post

Those are, as far as I can make out, 1989 NSR250 F3 pipes. Therefore, the reason I expect they don't quite fit properly is because the F3 shock linkage is different to the standard R5K/R6K linkage.
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Suntum
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Fri Jul 04, 2014 4:20 pm » Post: #4 » Download Post

THANK YOU ANDY!!! I got hold of a real Japanese NSR freak here and he confirmed just that....

All I need is an 89 model F3 now, never even seen one....
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Andy
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Fri Jul 04, 2014 5:11 pm » Post: #5 » Download Post

If I can ever pull my finger out (and find somewhere to do it!), I will build mine! It's all in bits in StephenRC45's cellar at the moment!

The sad thing is I have an '87 and an '89, and he used to have an '88 and a '90, so we should've had them all. Unfortunately the '88 and '90 have been sold. Confused
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