quadrajet tuning question in the form of a video! you can see what im talking about

[killer14163]

ok my boat is a regal 2760 express which is a 30 foot plus boat it has twin 4.3 Volvo pentas with single 4 blade props. i cant rember the pitch off hand but i think they are 17 if memory serves

i replaved the engine in this boat at the same time i put new intake manifolds on to increase horsepower and added quadrajet 4 bbl carbs to the boat all i have done is killed my holeshot i used to be able to plane the boat with 6 people on it with no problem now i can barely get it on plane with my wife and two small kids 5 and 6 -- 50 lbs each

ok no sound for some reason in video i basically want to know if the linkage hitting the spring is a big deal that it does not open entirely up i point at diff parts with my pinky through the video the carb looks like it is designed to open only that far anyhow as it has a stopper at the bottom that it hits about the same time as the linkage hits the spring let me know if anything else looks bad
thanks
Tracy


the only thing that has changed is the carbs and of corse i had to take distributor off and re time everything

here is a video of my new carb can you watch it and tell me what looks wrong with it?


http://i260.photobucket.com/player....m/albums/ii39/killer14163/ipodpictures145.flv
any help wouold be great

here is a utube video that you can hear the sound but smaller video
http://www.youtube.com/watch?v=29iiWG9MTdo


also just replaced my control modual in my est delco distributor as it was not advancing it held where it was set even at grater rpms i haven't tested since i did that it was last night

still want to verify the carb thing.


if the timing advance doesn't help im going to put old carbs back on with a adapter plate and see how it does please give input

thanks

Tracy

second video about the hose barb in the front of the old Holley carb should i add one to the back of the Rochester carb it has a hose coming off the left valve cover when looking at the pulleys on the front i currently have that hose hooked to the spark arrester as well as the hose from the other side.

 

[tricone]

Re: quadrajet tuning question in the form of a video! you can see what im talking ab

I don't see any problem with the carb...
look at the timing..

 

[Gary H NC]

Re: quadrajet tuning question in the form of a video! you can see what im talking ab

The secondary plates are not opening 100%....I doubt that is the problem though.
I think you have a timing issue or something else going on there.