09-09-2008, 08:34 AM #1
SL 900 needs piston - no longer available
Fried the rear piston and head of the SL 900 because the carb was was not supplying fuel. Immediately tore it down and began sourcing parts. The sleeve has been honed and is fine, and we now have a replacement head. The problem is, we used a WSM piston kit for the complete rebuild and the piston size we chose to run the over-bore at is no longer produced. No one can get us the right piston. I know its BEST to have all three of the same pistons but we would really like to not tear down the other two cylinders if we can get away with it as those two still have good compression. There is a Wiseco available at the same size, and the OEM is 1mm under, but a repairman we know in town said we could use OEM with a larger piston ring to compensate. Are there terrible effects to using a Wiseco of the same size with the two WSMs? Would it be better to go OEM? Feeling stuck here and very unlucky.
09-09-2008, 08:52 AM #2
- Join Date
- Sep 2006
sorry didnt see the wsm part
there are a few 1050 parts on ebay why dont ya buy that motor that sitting at 250+95 shipping and just swap it over
Last edited by Bone1050; 09-09-2008 at 08:58 AM.
09-09-2008, 12:05 PM #3
09-09-2008, 02:16 PM #4
I don't see any problem using one Wiseco with two WSM's, or anything else, for that matter. We're talking about a recreational riding boat, not a racer, right?
I definitely wouldn't put an undersized piston with a larger ring! That's a recipe for a collapsed skirt, and chunks of aluminum in your crank.
Just make sure you've got enough clearance on your Wiseco. They're not called "Siezeco" for nothing! I've had problems with them on several vehicles, due to following their clearance recommendations, which typically are on the tight side. (for the record, these problems were on 2 stroke dirtbike motors, not jetskis)
09-09-2008, 05:34 PM #5
09-09-2008, 07:48 PM #6
- Join Date
- Jun 2008
- Sudbury, Ontario
What overbore did you use...... I fried the rear cylinder as well, It ran good for 200 miles than.....boom.....
09-10-2008, 07:47 AM #7
09-10-2008, 07:53 AM #8
walking on, walking on the moon....
09-10-2008, 03:24 PM #9
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