780 slx engine in my slt 750?

arstrans · 09-14-2009, 08:48 AM

I am changing out my engine in my 95 slt 750 to a 96 slx 780. I was wondering if i need to change out my cdi box? I am using the 750 carbs with bigger jets that was stock with the 780. Is the timing gonna be right? Anything else i need to do? Any info is appreciated!!

FLjoyrider · 09-16-2009, 01:42 PM

Yes your 750 cdi will work, no you do not need to change the timing, although a pro 785 cdi will add quite a bit of power (mostly due to advance) and you shouldnt have any problems with the carbs as long as you switched the jets over.

arstrans · 09-19-2009, 02:02 PM

Hey, thanks a bunch FLjoyrider!! I am working all week so I only get to respond on weekends. I do not have the 780 box so the 750 one is gonna have to work lol. Going in this weekend Hell or high water! Oh wait, high water might be good. Take Care!!

luu21 · 10-08-2009, 07:14 AM

Hi,
iám from germany, last year i bought a slx pro 785. my first problem is that i don´t have a startor plate! And when i have such a plate iám not sure if the electric is working.
in germany is it very difficult to find things for a Polaris slx pro 785.. can someone help me to find e-box with the cdi and a startor plate?
FLjoyrider wrote you can us a cdi from a 750. can i us it also in a 785pro? and woks that exhaust valve correct?
what is different between a slx785 and a slx pro785 ?

I hope someone can help me.
Thanks rüdi

xlint89 · 10-15-2009, 11:49 PM

Hello luu21.

You should look for parts at greenhulk.net

That's where all the Polaris guys are at.

No, a 750 CDI won't work in a PRO.

There's a SLX 780, and a SLX 785 PRO.

Major difference between them.

Hull, carbs, stroker crankshaft, exhaust, etc.... all different.

A PRO is a factory built race ski that runs 63 MPH stock.

A SLX 780 is a performance recreational ski that runs around 52 MPH.