Gumby

Anyone got some AU Q-jet metering rods I could borrow, maybe buy if they work out.

scooter500

iTrader: (1)

I have a set of "AN" & "CH" (would like to trade either for a set of "DR"). What application will the carb go onto?

Gumby

not the typical GM 350 for around here [ don't ask more then that or ill be off topic for this board.]

Typical 750 Qjet

But I am leaning over a just bit only at the top of a shift when WOT, then takes back off once it shifts. told to try a bit richer rods to tune it out.

Got CZ rods now.

Though was partly my fault. had a new carb built for EGR and crap, then went to a non EGR n crap intake.

But the rest of the tune is nice, just leans over on power at the top of a shift going WOT.

Sonix

iTrader: (1)

PM or email me and remind me, i'll see what I have.
I don't think I have AU, but i've got a good selection, might have something close.

Did you try thecarbshop.com or edelbrock for something close?

five7kid

iTrader: (14)

Sound more like the fuel bowl is going dry. Have you tried a .149" needle/seat? Can you monitor fuel pressure under these conditions?

daveb123

Anyone know of an online metering rod chart? I've got a bunch of rods & can't seem to find my Rochester book. No AUs, but I probably have something close.

Damon

The rods ain't your problem. Either your fuel system isn't keeping up (dropping pressure on the top end due to lack of flow) or you are running the fuel bowl dry becuase of too low a float setting or not a big enough inlet valve.

I'll pretty much guarantee it.

Gumby

Seems allot think its fuel. I did when it first cropped up put in a new FP on the block. That and a little less timing made it not as severs.

In the inbetween time since my first post I did play some, I pulled off n plugged the vacuum line for the vac brake for the secondaries. Checked spring tension. And that did make a big difference from a few days ago but its still there a tiny bit. Though I will go the next step and install a pusher electric pump in the rear run off a 7psi oil switch for safety. That should keep the on the block pump from having to suck fuel at WOT from 15' away.

And scouts honor, this has never happened before. But once that vac brake was off and while out testing, honest to god. On one of my test runs my left corner lifted really high on a 1-2 shift. I doubt it got off the ground but man never in its life has it went up like that. Way beyond normal lift or rock on a shift. [need to get that posi installed] One of them rare moments you wish someone was there.