1993 SD GTX performance quetions

[Jordanh]

I just got my first PWC...'93 GTX that has been lightly used for $500. It has the 587 engine @ 60HP per bombadier.

It starts easy and runs strong.....but tops out at 35mph.....with 3 riders or solo.....no difference in speed although it planes out quicker solo.

I intend to check and/or replace the wear ring and make sure the impeller is not dinged up. I've been told changing to a 44mm carb and new manifold will help.

Any other suggestions?

Will SBT 580 White Engine show me much improvement in terms of HP and performance?

TIA!

[Technical Support]

That totally depends on how strong your engine is right now, if you would see an improvement.

Without knowing what RPM you are turning now (you need a tach) you can't make an accurate judgement as to your performance. I would get a tach from www.watercraftmagic.com - he can also sell you any upgrades you want.

[Jordanh]

That makes sense. How about compared to a stock new 587 engine......what can one expect from an sbt white reman engine in terms of HP and top speed? Again....assuming all thing equal otherwise on a stock machine.

Just curious as I'm tempted to go with a reman engine at some point. Heck...this thing is 10 years old and has never been cracked open or had much in the way of repairs yet.

[Technical Support]

Ours are slightly better, with oversize pistons and trued & welded cranks. It's not something you would feel on a stock older ski like that though, if the original engine was fine.

[Jordanh]

Thank you.