Quote:
Originally Posted by DaleTx
Sieg.... sounds like your getting closer to resolving the tuning issues with your new carb 
Here is a link to a thread I ran across that has some discussion about tuning the Holley HP Ultra carbs that could be helpful.
http://www.ffcars.com/forums/17-fact...carb-idle.html |
Thanks Dale, I can definitely relate to those posts, especially j.b.goode's.
Holley tech told me the transfer slot exposure is supposed to be .025 even though the manual which is relatively detailed makes no reference. That's where I set them and it results in a fast idle and the idle bypass valve is relatively ineffective in controlling idle speed. The motor has been weak/flat/stumbles/bogs when engaging the clutch which says lean. Just haven't been able to find that crisp and meaty response right off idle yet.
I'm going to retain the primary transfer slot spec and back the idle down with the secondaries and see what it gives me. It's about time to say screw the rules and tune by response!
The upside is off idle performance is pretty strong, trailing throttle in corners is good, roll on's into the secondaries near seamless. The pump cams and squirters even feel close but I will test +/- alternatives just because.
I'm close, another decade should do it at my current rate.
Disclosure: In no way do I feel this carb is at fault.
.......it's me
