Thread: What size jets should I order?
04-26-2012, 01:14 AM #1
What size jets should I order?
I acquired a set of West Coast F/A's, a PSI dry pipe and a TDR waterbox for my 95 sl. I wanted to install them all at once. What size jets should I order for the mains? Currently they are 90. I also have Boyesen reeds in them now. Im running premix. Thanks.
04-26-2012, 10:07 AM #2
I Currentlyhave Ocean Pro F/A's and a TDR waterbox on my '94 750. I have the highs turned out an extra 1/2 turn to compensate and my piston wash is just right. However, in a few weeks I plan to install carbon fiber reeds, reed spacers, and a PSI dry pipe. After talking with a few other folks, I decided to get #120 main jets and try those first. I figure I'll keep my HS needles set at factory + 1/2 turn to be on the safe side with the larger jets installed and then watch my wash to see how it's going.
04-26-2012, 01:42 PM #3
You should be running a #105 main jet with that setup(pipe or no pipe), putting that pipe on it ALOT of work, don't be suprised if its no faster. I tried one when they were new in '94 on my sl750, went 1 mph slower.
04-26-2012, 06:50 PM #4
- Join Date
- Oct 2006
- Cleveland OH
With OP Vortex FA's, V Force reeds, 785 CDI, PSI dry pipe on my 750 I was somewhere in the 125 range of highs with a larger pilot jet too. (maybe a 95 jet?)
04-26-2012, 11:59 PM #5
04-27-2012, 10:44 AM #6
PSI claimed a 8HP gain with the dry pipe and more low end and mid-range punch. Also, without all the water volume the exhaust gasses escape faster allowing the motor hit higher WOT RPM. To keep those RPM lower and not hit the rev limiter you can put on a bigger prop which should translate to more top end speed.
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