PRW Qjet

[77cruiser]

Anybody see one of them yet?

https://store.prw-usa.com/carburetors/

https://store.prw-usa.com/4245451-q-jet ... i-engines/

[cat herder]

Does it have 5 more circuits than a regular QJet, like that Edelbrock thing?

Some parts exist for no real reason other than because there are people out there with too much money who will buy them.

[rgalajda]

Working on one now , so I will let you know how it turns out. I do know they are made in China . The casting and machining looks very good but Its' the details that matter. So far I have it all apart to measure every thing. Already I can say there are some details to be rectified. I have been pretty busy so it may take a few days.

[77cruiser]

Are thy still a Zinc casting? Wonder why the flow rating is so much less? Thanks for taking the time to look at it.

[GTO Geoff]

Change in air flow could be because of change in fully open position of air valve &/or sec t/blades.

[rgalajda]

Aluminum casting . I,m already getting frustrated by the repairs needed to even test this carburetor, and I am not talking about jetting/air bleeds.

[10132]

“Crafted with top-grade materials and engineered to perfection”….LOL….thanks for investing your time on one,it’s appreciated.

[cat herder]

All it's missing is Bluetooth so you can adjust it with your damn phone.

[77cruiser]

[rgalajda]

This is the 80’s single main air bleed version of the Quadrajet casting with the rear vacuum pull off. Rebuild kit would be SMP 1633 ( Standard Motor Products )

74 main jet / .044J Primary Rod / .0570 Secondary Rod / J hanger


Problems found.

Float level was .644”
No springs on primary rods
APT adjusted to 1/2 turn from bottomed
Air door was sticking ---- fixed
Idle bypass air not drilled in main body ---- fixed
Electric choke sticking in housing ----- fixed with bushing
Main body has an interference problem with baseplate -- Requires machining ----- fixed
Secondary disc for secondary metering rods ( in main body ) – one of them is not formed correctly
Secondary air valve spring tension was 1.5 turns ------ fixed
Primary blades not opening far enough , Secondary blades opening to far ----- fixed

I will post some picture later.
This will be 800cfm when I’m done.