New to Me: Modded 97 SPX

Matt Braley

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Niceville, Fl
Water Crafts
I can't keep up with it anymore. I've got some really cool skis!!
#26
Make sure to replace those fat O-rings also. They shrink up and get brittle over time.

Leak down test? I don't do those normally but a "well worn" engine is going to fail. It still might have a lot of good run time in it though. I would just look at compression and enjoy the ride.

OEM parts are better on the RAVE parts. I wish the aftermarket ones were cheaper then they are. You can search ebay by part # to look for deals on OEM components. Aftermarket ones work fine too though if need be.
 


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Location
Eagle Mountain
Water Crafts
1997 SPX
1997 GSX
1986 JS550
#27
Here is a performance question I've been kicking around. I'd appreciate any input.

I ran those aftermarket carbs and intake for the summer. Never got them tuned perfectly. They always seemed to run rich. Granted I only had it out at the very end of the summer and only rode it a few times. It ran awesome when it wasn't fuel flooded.

With the 170 psi compression and stock exhaust, would an ported OEM intake and a 40mm group K setup be a better option? I've been thinking about sending a spare set off to them to build.
 

Matt Braley

Premium Member
Premium Member
Messages
6,672
Likes
120
Location
Niceville, Fl
Water Crafts
I can't keep up with it anymore. I've got some really cool skis!!
#28
They are a nice little improvement over stock. The intake is already good size so it wouldn't need much porting. I'm not sure what Harry charges to do the carbs but I have a set already done for 225 shipped. If you have a clean spare set then you might be money ahead sending them in.
 

Matt Braley

Premium Member
Premium Member
Messages
6,672
Likes
120
Location
Niceville, Fl
Water Crafts
I can't keep up with it anymore. I've got some really cool skis!!
#30
Not sure which aftermarket carbs and intake manifold you were running but there is always a way to dial them in. If your soupy on the bottom end but it runs well otherwise then I'd try raising the pop off pressure or smaller low speed(pilot) jets. That's after I made sure that I could not get there by turning the low speed needles in.
 

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