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CBR vs SP shock


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j911brick

 
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CBR vs SP shock

Wed Oct 10, 2007 1:38 am » Post: #1 » Download Post

For the past few weeks I have been messing around with having my shock rebuilt. Technically these units are not rebuildable, and parts are not available.

At first we just needed a reservoir bladder. Turn out that many of the Showa shocks use the bladder. I bought a cbr shock for the bladder, then it turned out we realized we didn't need a bladder.

The cbr600f4 shock looks very similar to the nsr shock. I took some very quick measurements and it looks like it will fit. But the cbr shock does not have infinite adjustment and the spring is tapered. The body of the shock is also smaller and it uses a smaller valve than the nsr. Basically, none of the parts are usable on a nsr shock except the reservoir.

My tuner looked at the race-tech site and thought he ordered a gold valve kit for the shock, but when I asked him to look again he was not sure he ordered the right part. We think/hope the 46mm kit for the early 900rr will fit. He also received the wrong spring -again.

I leave for CSS tomorrow so I hope we can get worked out or I cant take the bike.
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james
Its not how fast you go...Its how you go fast.
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p0lariso

 
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Wed Oct 10, 2007 2:00 pm » Post: #2 » Download Post

I know they are a lot of $$ but why not go with an Ohlins shock
Honda: NSR 250 R-SP 94- 46HRCL ($735.00)
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j911brick

 
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Wed Oct 10, 2007 3:23 pm » Post: #3 » Download Post

I'm trying to keep the bike showroom original.
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james
Its not how fast you go...Its how you go fast.
MC21 Rothmans
RS250
RC31
CRF250X
748R
Porsche (many)
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horde

 
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Tue Oct 16, 2007 9:03 am » Post: #4 » Download Post

promecha.com.au these guys can rebuild "unrebuildable" shocks and have quite a good name in Australia. Tuned many a quick bike!

Only drama for you is they are on the other side of the world to you, but the site is well worth a look!

Hope this helps
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j911brick

 
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Tue Oct 16, 2007 3:48 pm » Post: #5 » Download Post

We got it all sorted out. The correct Race-Tech rebuild kit is 4602, which is the same as the early CBR900.
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james
Its not how fast you go...Its how you go fast.
MC21 Rothmans
RS250
RC31
CRF250X
748R
Porsche (many)
http://members.rennlist.com/j911brick/rennlist3_002.htm
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