SoCal Jet Boats

Tech Talk => Engine Mechanical / Electrical => Topic started by: 2savage4you on July 08, 2008, 12:01:37 PM

Title: Vacuum advance dizzy
Post by: 2savage4you on July 08, 2008, 12:01:37 PM

Who has them on there boats?  and do they work well... I figured they are more for a car than a boat right?????

2sav

Title: Re: Vacuum advance dizzy
Post by: Jetaholic on July 08, 2008, 12:27:08 PM

You can use a dizzy with the vac advance dashpot...just dont hook it up to anything or remove it as it serves no real purpose in a jet boat. You figure a jet boat engine is at full advance by 3,000 RPMs and most jets don't ever run below 3,000 anyway.

Title: Re: Vacuum advance dizzy
Post by: crewchief22 on July 08, 2008, 12:40:35 PM

If you remove the vacuum advance unit be sure to lock down to advance plate inside the distributor so it doesn't try to turn.

Title: Re: Vacuum advance dizzy
Post by: 2savage4you on July 08, 2008, 12:54:20 PM

Yeah i dont want to buy something i have to fix..

I will find something ;)

2sav

Title: Re: Vacuum advance dizzy
Post by: Luckie Stiff on July 08, 2008, 02:06:19 PM

(https://www.socaljetboats.com/proxy.php?request=http%3A%2F%2Fstatic.summitracing.com%2Fglobal%2Fimages%2Fprod%2Flarge%2Fsum-850050_cp.jpg&hash=25286a9eeeaec45f16a6533987fd2b06cc5e6a34)


http://store.summitracing.com/partdetail.asp?autofilter=1&part=SUM%2D850050&N=700+4294908216+4294840133+115&autoview=sku (http://store.summitracing.com/partdetail.asp?autofilter=1&part=SUM%2D850050&N=700+4294908216+4294840133+115&autoview=sku)

Title: Re: Vacuum advance dizzy
Post by: speedymopars on July 08, 2008, 10:05:46 PM

Here is where it would help. Cruising the channel. Pulling the kids on a raft. Idling at the dock.

This would give it more of an advance at part throttle light load and give it better mileage and throttle response there. 

If you are the never see below 4000 RPM and always full tilt, it won't buy you anything.