Nettet6. jul. 2004 · What would be the expected symptoms of a bad power valve on a 750 Holley with vacuum secondaries? If it don’t fit, force it. If it breaks, it needed to be … Nettet11. jun. 2010 · I agree that the power valve is clearly opening too soon. I guess I didn't think to see what happened exactly to the AFR as I got into the secondaries. I'll check, and I believe I see your point. I know my secondaries are not lean - so if anything, I would need to go down a jet size.
Tuning Secondary Jets vs. Power Valve - NastyZ28.com
Nettet22. apr. 2016 · Holley Carburetor: Power Valve Explained Holley Carbs: How To's & Advice ,40 yrs of exp. 7.73K subscribers 167K views 6 years ago Explaining the Holley … Nettet9. mai 2011 · #1 Symptoms of a bad power valve (Holley 750 dual feed) May 8, 2011, 10:36 AM I have ideas but I want to see what you have to say so I can find out if I am an idiot or not. Thanks. Joe If you can leave two black stripes from the exit of one corner to the braking zone of the next, you have enough horsepower. - Mark Donohue Tags: … home gaithersburg md
Even Holley is confused about power valve selection!
Nettet11. jan. 2024 · The most common Holley power valve is one that opens at 6.5 ″Hg. This value is low enough to keep the valve closed under mild throttle opening. For example, if your engine is cruising at light load at 10-12 ″Hg then the power valve will be closed. NettetNo high RPM or top end power. Carb too small. Secondary on carb(s) not opening. Linkage binding. Fuel delivery problem. Blower drive belt is slipping. Blower … Nettet6. jul. 2004 · goody2shoes. check out this page, I remember holley had some good tech info on their power valve at one time, it should be somewhere aroudn there. Explains how it works and symptoms of the problems, etc. But for the most part the symtoms are what fried guy said. This is an older thread, you may not receive a response, and could be … home gallery furniture coupon