Performance tuning the E4ME carb

[LannyL81]

Anyone tried any performance tuing of the E4ME carb? Things like drilling four small holes in the secondary fuel tubes or anything else that can be done to older QJets? I know abou the different secondary needle hanger available.

I picked-up a E4ME carb off the Corvette Forum, thinking it was probably junk...just to try some things with. The carb turned out to be fine except needing the choke pull-off replaced. Cleaned it up and put a kit into it...and was wanting to try different performance things.

However if someone is in need of a replacement carb, I will go ahead and sell this one before I do anything to it for $100.

 

[Peer81]

I did about everything that was writen in Cliff's and Doug's books (about the same as Sensei did with his q-jet).

At this point the primaries are perfect but they already were, with the ECM control.
The secondaries are running rich (8:1) with CH rods so Cliff is making me leaner rods.

Greetings Peter

 

[Sensei]

Check this thread:

http://www.corvetteactioncenter.com...430-those-modified-engines-original-carb.html

God bless, Sensei

 

[LannyL81]

Sensei,
Followed that thread of yours....still not sure though what exactly it is that you have done. I know the secondary rods can be replaced...but what else?

Thanks,
Lanny

Forget about the above....went back and found the thread with all the things to do.

 

[Peer81]

All the tips are in both Doug's and Cliff's Q-jet books.

I would say you can also adjust the lean and right mixture tops (as long as you still get it at 14.7:1). You can replace the secondarie hanger, replace or modifie the acc. pump for more or less fuel. etc etc.

Greetings Peter