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vince1 05-19-2019 09:29 AM

Qjet base plate repair
 
https://youtu.be/R86zI4ii0nk

I thought I would share this as to how to repair a worn out throttle shaft bore in a quadrajet carburetor base plate.

Finding a worn out bore has put my rebuild on hold for a bit.

Nappers 05-19-2019 12:27 PM

Re: Qjet base plate repair
 
I've watched a couple of his video's, he does a good job.

If you don't want to wait, Summit Racing has "remanufactured" QJets, long as you have a rebuildable core to send back.

Summit Racing QJet: https://www.summitracing.com/parts/sum-250200

Jet also makes them. Not sure if one is better than the other, Jet are more expensive.

I have 2 QJets that I'm either going to rebuild or go the Summit Racing way.

vince1 05-19-2019 01:35 PM

Re: Qjet base plate repair
 
The fun is in DIY but this one sure does seem a lot more complicated than the Holley I did so many years ago. Tomorrow I'll see if I can find a reamer that costs less than a carb.

Nappers 05-19-2019 03:56 PM

Re: Qjet base plate repair
 
Yeah, I hear ya. I've rebuilt a couple of QJets. I have several sets of secondary needles that I play with. They are stamped and I looked up the stampings and put the middle of the pack for Wide Open Throttle (WOT) and it ran pretty fast up into the higher range. Got pulled over by a CHP upon doing so. LOL. I wish I had a reamer to loan you. I haven't had to do that.....yet.

Nappers 05-19-2019 04:14 PM

Re: Qjet base plate repair
 
Here's a kit from Quadrajetpower.com: https://quadrajetpower.com/primary-s...shings-screws/

sirJim 05-20-2019 12:00 AM

Re: Qjet base plate repair
 
You might want to look at Lars Grimsrudīs paper on QJetīs works great.
do a google.

geezer#99 05-20-2019 12:26 AM

Re: Qjet base plate repair
 
Quote:

Originally Posted by sirJim (Post 8528534)
You might want to look at Lars Grimsrudīs paper on QJetīs works great.
do a google.

https://www.digitalcorvettes.com/for...ad.php?t=88376

stsalvage 05-22-2019 08:05 PM

Re: Qjet base plate repair
 
what you need a base plate I can look to see if i have a few extra's I like to see a pic of what your looking at and i will see if i can match it I'm In Calif so are stuff here is a lot better then other places in the country

vince1 05-24-2019 06:02 AM

Re: Qjet base plate repair
 
Thanks for the offer but since posting I took another look at it and decided it isn't that bad and will use it as is. I found one bent needle metering rod and one plugged jet. The float pintle also had a big groove around the rubber part which could explain all the gas in the oil. It is now back together with only the choke to put on..


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