01-14-2008, 11:23 PM #1
difference between 5131081 and 3021009 cylinders
Can anyone tell me the difference between the two cylinders?
01-15-2008, 01:09 AM #2
01-15-2008, 05:57 AM #3
Can you tell me how that effects power, rpm, and jetting? The reason I ask is the '97 SLTX I just bought has 009's but one needs repair (re-sleeve). The 1050 I bought lastnight ( From a '98 SLHX) has the 81's. I'm not going to mix and match so If I use the 81's what real world difference is there? Can the 81 be ported to match? If I re-sleeve the 009 will I have to buy a sleeve for the 009 or does the machinist "work" the sleeve to match the old one?
01-15-2008, 09:54 AM #4
Having a higher exhaust port will shift the power band towards the top end. The 81's will have a bit more lowend torque.
The 97 jetting (main) is 138 pto 142 mag & center.
98 135 pto & 140 mag & center.
Last edited by starflight; 01-15-2008 at 10:09 AM.
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