no, read my post dude, the 1990 is the long stroke with screw type valves. It's NOT a mismatch, that's how it's supposed to be.
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749's are all long-stroke, 748's are short stroke. In theory you could use the long stroke top end on a short stroke.....
You would have to bush the rods to accept the smaller wrist pins
Machine the block for the shorter stroke
Use the original kat cam sprockets on the gsxr cams
Might need to do something with the oil return lines, since they are designed for a set height
Possibly use shorter studs, or maybe just spacers on top of the head
And then you would end up with a 690cc engine....
I think it would be more productive and less expensive to just get yourself another kat 750 head.Any and all statements by Loudnlow7484 are merely his own opinions, and not necessarily the opinion of Katriders.com. Anything suggested by him is to be followed at your own risk, and may result in serious injury or death. Responses from this member have previously been attributed to all of the following: depression, insomnia, nausea, suicidal tendencies, and panic. Please consult a mental health professional before reading any post by Loudnlow7484.
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Originally posted by arsenic View Postno, read my post dude, the 1990 is the long stroke with screw type valves. It's NOT a mismatch, that's how it's supposed to be.
Also, the serial number prefix on all early gsxr's is "R716"?
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