Quadrajet Problem Solving > Dialing in your rebuilt Quadrajet carburetor
Jetting
blazer74:
I guess they call them rebuilders pistons. Wasn’t aware until I put the Vortecs on.
Yes I’m aware of the 110 Lsa. I’ll stick with it for now. Just playing around with carbs.
Thanks.
blazer74:
17057504
Plug kit installed
71/ cliffs 44 combo. Going to need the jets from you.
ITubes .035. DCR .046 instead of the .055 it is now.
Mains, upper idle bleeds .070. Lowers .073 not .076 as I stated earlier for the lowers.
Your 2ndary rods DA .044 are rich on my other carb 17056228
K hanger. I have a CH BA DE DP EK DE DD CG rods.
Poe tubes .036, discharge .052
Bypass air .089, bushed throttle shafts.
Néw spring and cam air valve, float from a kit I bought from you for a 17057204 never used.
I made an error 2 posts ago regarding bypass air, went from .085 to .089 not .098 with the 226 carb.
I am also curious as to how the thicker airborne gasket affects the 2ndary rod height.
On another note on the 17056228 I induced a very slight hesitation when I went from 72-71 jet, .047-.052 DCR and .085-.089 Bypass Air when warming up, goes away when normal operating temp.
Working my way up with the APT to see if it’s lean but could be rich as a hot engine runs leaner.
Acc pump is on the inner hole. The Changes I made did make my hot starting much nicer and cleaner.
Thanks for listening. I’ll call this week. Craig.
Cliff Ruggles:
If you brought in a hesitation changing jet size where is it occurring? The jet size is a player for both light and heavy/full throttle. APT is there for light throttle tuning only.
If you brought in a "hesitation" right off idle for "normal" driving simply changing jet size you leaned up the jet/rod relationship and should be able to raise the metering rods up with the APT system to compensate......
blazer74:
Yes, thanks Cliff.
Takes me a while to get things done.
3 turns up APT seems to get it.
One more overnight cold test drive to confirm.
Hesitation was only before reaching full operating temp.
I like the smaller jet 71/44 combo better overall.
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