Need motor input

[beachedflunkey]

I ran this groupK modified 760 motor all last season with some buckshots and an R&D pipe. It ran great but there was a horrible leap in the low-to-mid powerband (horrible for freestyle although the ski must've easily done 50mph +/- and did get there pretty quick). The head was also worked by groupK and had just under 150psi, which I'm told is indicative of a race port. Anyways, that said and with these pics, can you tell if it might perform well with a set of 44's, a bpipe, and a concord? At least as good as a limited 701?

Also, can you tell if the sleeves are new or just overbored?

I'm not sure what to look for so I tried to take as many pics as possible without disassembling again. :1zhelp:

 

[SUPERTUNE]

Since you have the motor out, Go and buy a degree wheel mount up up crankshaft and do a port map of the duration timing on all the ports and PM me and I'll give you an answer for your question...

 

[SkiDaddy]

Proper jetting/pipe tuning can make a big difference from idle to half throttle. urr:

 

[beachedflunkey]

Since you have the motor out, Go and buy a degree wheel mount up up crankshaft and do a port map of the duration timing on all the ports and PM me and I'll give you an answer for your question...

Degree wheel available at Advance and such?

I pulled a search but couldn't find anything on how to do a port map of the duration timing. Can you help a motor noob out?

While we are on the subject of mounting anything to the crankshaft, if I broke a flywheel puller on this motor, does it just mean I need a better flywheel puller or any tips there?

 

[Matt_E]

Linky for port-map howto\

For pulling the flywheel, make sure all bolts are threaded in the same amount so that the center bolt (big one) is really centered. Snug up tight, and tap the end of the big center bolt with a hammer.

 

[Fathom]

http://www.tavia.com/free_degree_wheel.html

 

[beachedflunkey]

Linky for port-map howto\

For pulling the flywheel, make sure all bolts are threaded in the same amount so that the center bolt (big one) is really centered. Snug up tight, and tap the end of the big center bolt with a hammer.

Thanks for the link. I hope it turns out to be good news if I go through all that :banghead:

fathom, thanks for the link too. Once I saw the pic it clicked...