TomSawyer
New Member
Hello Sea Doo forum!
Last year I purchased a 2001 rxdi with 95hrs and a 2002 rxdi with 70hrs from 2 different people. They both run great or as they should and are both bone stock (head bolts never turned). The problem is that the 2001 has much more acceleration and about 5 mph more on the top both turning 6700 rpm at wot. It appears that the octane rating for the 2001 is 91 and 87 for the 2002. This tells me that the compression must be higher in the 2001. So then I looked at part numbers for the 2 cylinder heads and they are different and actually look different too. Is it possible to bump the compression of the 2002 to that of the 2001? Can I buy a 2001 head and put it on my 2002? I live and ride at 8300' so my compression is on the low side as it is, I would like to bring it up to what it should be at sea level....Is this possible on these? The only place that I could find that does a head mod is Group k. They do a very mild adjustment in compression I assume because it is for sea level. Thanks in advance for any info on this subject.
Last year I purchased a 2001 rxdi with 95hrs and a 2002 rxdi with 70hrs from 2 different people. They both run great or as they should and are both bone stock (head bolts never turned). The problem is that the 2001 has much more acceleration and about 5 mph more on the top both turning 6700 rpm at wot. It appears that the octane rating for the 2001 is 91 and 87 for the 2002. This tells me that the compression must be higher in the 2001. So then I looked at part numbers for the 2 cylinder heads and they are different and actually look different too. Is it possible to bump the compression of the 2002 to that of the 2001? Can I buy a 2001 head and put it on my 2002? I live and ride at 8300' so my compression is on the low side as it is, I would like to bring it up to what it should be at sea level....Is this possible on these? The only place that I could find that does a head mod is Group k. They do a very mild adjustment in compression I assume because it is for sea level. Thanks in advance for any info on this subject.
