Switching to OEM 44s - Questions

[SkiDaddy]

OK, I now have a complete OEM 44 intake system for this hungry 790.:woot: Now a few things to resolve before I mount them.

1. As received the carbs mount with the pumps facing out, throttle wheel towards the tray. It looks like the fuel lines will be really squeezed in tight, and access to the adjusters will be a real booger. :banghead: It appears the adapter plate on the bottom of the carbs will allow the carbs to be rotated to allow the pumps to face in, throttle wheel towards the nose. Is this the way to go? I seem to remember reading somewhere about which way is best for carburetion when landing hard?

2. The carbs have individual fuel pumps. I'd really like to retain the OEM fuel selector, so I have a reserve. Is one input line split into a Y adequate, or do I need to obtain a runabout fuel pickup & selector (w/twin inputs) to feed these carbs?

3. The Tee fittings that came with look a tad restrictive. Who has good high flow Y or Tee fittings?

4. I'm filling in the crossover passage w/JB Weld. Any other things I need to know?

Thanks!:cool2:

 

[SuperJETT]

1. I did that, worked fine, you can actually get to the adjusters, the throttle cable isn't stretched, and the hard landings issue depends on which way you rotate.

2. one is fine as long as it's not clogged, check it by blowing or on a garden hose.

3. jetskisolutions.com or mcmaster.com part # 91355K47

4. 120L/105H to 115L/100H is probably where you'll end up with somewhere around 15-20psi popoff.

 

[SkiDaddy]

Wow, quick response Darin!:biggthumpup:

OK, I'll go ahead & rotate them then. Landing on which side would then cause a bog? I tend to land more on my left side (not that I rotate)....

As to jetting, Paul recommended 120 Pilots/130 Mains/2.0 N&S w/95 gram springs (25 PSI) after riding my ski w/38s. I've read some of the threads, but Paul's seen my porting (TLR, kinda on the edge) so I'll try his suggestions first. His suggestions w/the 38s were really close.:biggrin: