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300/440/550 suggestions on a head gasket
gaskets I used copper gaskets on my ski and have never looked back.- js440buz
- Post #7
- Forum: 300/440/550
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300/440/550 550/440 Parts
parts update So has everything been gathered up yet ?- js440buz
- Post #18
- Forum: 300/440/550
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300/440/550 picked up a 78 js440
440 mods I just did a complete rotational mass mod (billet flywheel, couplers, driveshaft)and now my already modded 440 really rips for a 440, but it isn't close to my fully modded 550. So I would look at your compression to see how solid your engine internals are. And throw some gas in it and...- js440buz
- Post #8
- Forum: 300/440/550
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300/440/550 no fuel getting into the carb
fuel pump ? Check that you have no air leaks in your properly placed lines. Also make sure your fuel pump is really clean. I just did a complete ski re-build and that was my last issue.- js440buz
- Post #3
- Forum: 300/440/550
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? about prop pitch
I have just rounded up the last piece of a complete rotational mass mod. Here is what I have a 78 js440 with a jetinetics flywheel and rear coupler, since I have a full circle crank I just found and ordered a billet front coupler, I also picked up a aluminum drive shaft (can't believe I found...