SoCal Jet Boats

Tech Talk => Engine Mechanical / Electrical => Topic started by: Turbo_harry on December 10, 2012, 05:41:49 PM

Title: Holley 750 double pumper Help!!!
Post by: Turbo_harry on December 10, 2012, 05:41:49 PM
Need to rebuild a Holley 750 double pumper.
Is it hard? I have taken apart many dirtbike and quads carbs off to clean but never have I done a big carb like this. Or should I just take it in? What would be the cost any idea?  :banghead: Thanks
Title: Re: Holley 750 double pumper Help!!!
Post by: 76NORDIC on December 10, 2012, 06:22:49 PM
Easy to do, just buy a kit from a speed shop and go to town :thumbup:
Title: Re: Holley 750 double pumper Help!!!
Post by: crewchief22 on December 10, 2012, 06:28:22 PM
Not hard at all. 

Take pictures of the linkage to help make sure you get it back together correctly.

If its been setting for any time you should get a can of carb dip to soak the parts in (I like the Barrymans or McKay brands if you can find it).

Be sure to use the Holley style needle & seat assemblies.  The ones supplied by Hygrade or BorgWarner can be problems.

Good luck
Title: Re: Holley 750 double pumper Help!!!
Post by: renegade on December 11, 2012, 05:01:19 AM
Just take it in its nothing like that jap crap. >:D
Title: Re: Holley 750 double pumper Help!!!
Post by: 74RogersBubbledeck on December 11, 2012, 06:41:44 AM
Don't take it in

You can do it!

It's straight forward, take it apart, clean each piece, replace with what comes in your kit, put back together

When you buy your first carb kit you'll be like is this all there is to replace  ???
Title: Re: Holley 750 double pumper Help!!!
Post by: 74RogersBubbledeck on December 11, 2012, 06:45:07 AM
BTW when I was a kid I would take apart my set of 4 Mikuni's on my KZ650 and there was a hell of alot more going on in those jap carbs than in a Holley.
Title: Re: Holley 750 double pumper Help!!!
Post by: JetBoatJesse on December 11, 2012, 03:11:22 PM
Its like changing the battery in a TV remote,  just remember witch way they go

ha, from a smart ass phone is more like it..

Title: Re: Holley 750 double pumper Help!!!
Post by: 19ftspectra on December 26, 2012, 11:23:57 PM
i now i am late to the party  but  do not take it in..    we  ( i )  can help you with  taking it apart and putting it back together  not alot of moving parts a phone call  and or just some guiding  you  is all you will need.   shoot me a pm  or just call me at...  no stalkers please    805 - 816-3582 .. robbie..   glad to help   .
Title: Re: Holley 750 double pumper Help!!!
Post by: 19ftspectra on December 26, 2012, 11:27:03 PM
by the way   74RODGERS   kz650  as a kid  .....  you go mr.  my hat is off .. :thumbup: :thumbup:
Title: Re: Holley 750 double pumper Help!!!
Post by: 19ftspectra on December 26, 2012, 11:29:44 PM
and 76 nordic  you have the best avitar  ever ...  ;D :beer: :beer: :thumbup: :thumbup:
Title: Re: Holley 750 double pumper Help!!!
Post by: GregS on January 08, 2013, 06:12:42 PM
BUY A GENUINE HOLLEY KIT....REPEAT....BUY A GENUINE HOLLEY KIT. Look at the numbers stamped on the side of the Power Valve ( 45-105 ) your kit will probably come w/85). Most common. Be careful when you put the outer bowl gaskets on...there is a hole for the accelerator pump...only on one side of the bottom of the gasket.  Other than that....really pretty simple. DON"T TURN IDLE PLATE SCREWS. Initial idle mixture ( as in all carbs) is 1-1/2 turn out from "lightly seated".

Lemmie know if yer cornfused.

GregS
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