hot seat cyl. head ? - Polaris ATV Forum
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post #1 of 3 (permalink) Old 10-10-2010, 07:24 PM Thread Starter
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hot seat cyl. head ?

i have a scrambler 400 and i just got a spare motor for parts. it had a hot seat head 12:1 compression ratio. do i have to get a high comp. piston? do i need to rejet the carb? if so to what? and also what is the compression ratio on a stock 400? thanks
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post #2 of 3 (permalink) Old 11-13-2010, 01:32 PM
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Please let me know what you find out about this> I just got a motor with a hot seat head as well I have no idea what is in the motor but from what i can tell It has the head and upgraded reeds as well. After I get the motor in stalled I was wondering about jeting for alt. approx. 8400ft let me know if you have any insight. Thanks!
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post #3 of 3 (permalink) Old 11-13-2010, 01:34 PM
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The motor I have is a 400 and is going in a sport 400l
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