Holley 465 questions.
If the carb is no jetted right will my car smoke and stink and burn my eyes.How do i tell what i have and what i need:(
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lol my car does the same, running to rich maybe?
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Originally Posted by rotary84
(Post 9712181)
lol my car does the same, running to rich maybe?
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Originally Posted by vj226966
(Post 9712228)
i guess how do i fix it.I cant stand a car that smokes and stinks.Any ideas?
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I assume you've deleted all emissions including the cat. Guess what, it's going to stink. If it's as bad as you say, find someone that has a wideband and tune the carb. That will reduce the smell but not eliminate it.
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Originally Posted by trochoid
(Post 9712383)
I assume you've deleted all emissions including the cat. Guess what, it's going to stink. If it's as bad as you say, find someone that has a wideband and tune the carb. That will reduce the smell but not eliminate it.
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Well, I the air pump is off, the cat will soon be toast. For the smoke, now you must get into specifics. When does it smoke, what color is it, what does it smell like?
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Originally Posted by trochoid
(Post 9712570)
Well, I the air pump is off, the cat will soon be toast. For the smoke, now you must get into specifics. When does it smoke, what color is it, what does it smell like?
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Just off hand that sounds like oil seals in the engine, the added fuel and running rich could be actually washing the seals a little bit which would allow more oil to push past worn oil seals and cause it to smoke
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It might just be way over-rich. Is the smoke bluish or more of a dark gray/black? Are you premixing? If so, at what ratio? If not, do you have the OMP wired open or do you have a lifter rod hooked up? Any dripping from the booster venturis in the carb?
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Originally Posted by PercentSevenC
(Post 9712729)
It might just be way over-rich. Is the smoke bluish or more of a dark gray/black? Are you premixing? If so, at what ratio? If not, do you have the OMP wired open or do you have a lifter rod hooked up? Any dripping from the booster venturis in the carb?
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get a holley manual & read it from front to back so you can get familiar with the unit to make the necessary changes/adjustments needed for all round performance
sounds like a rich fuel mixture which will require a jet change to lean out the A/F ratio spark plug color: black=rich white=lean |
Originally Posted by vmarx7@yahoo.com
(Post 9712782)
get a holley manual & read it from front to back so you can get familiar with the unit to make the necessary changes/adjustments needed for all round performance
sounds like a rich fuel mixture which will require a jet change to lean out the A/F ratio spark plug color: black=rich white=lean |
if your eyes burn & strong smell of fumes that's an indication of a rich fuel mixture
your premix ratio of 1 to 1 (oz - gal)? |
Originally Posted by vmarx7@yahoo.com
(Post 9712913)
if your eyes burn & strong smell of fumes that's an indication of a rich fuel mixture
your premix ratio of 1 to 1 (oz - gal)? |
read the repair/rebuild pages
you need to disassemble the primary fuel bowl & identify what # jets are installed |
Originally Posted by vmarx7@yahoo.com
(Post 9712957)
read the repair/rebuild pages
you need to disassemble the primary fuel bowl & identify what # jets are installed |
You asked for information in ref to Holley carbs and Rotarys, you need to reference information from Racing Beat, it looks like their kit and I know that there are modifications done to the carb by them they also have the jet information you need.
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Originally Posted by rotarydude
(Post 9713040)
You asked for information in ref to Holley carbs and Rotarys, you need to reference information from Racing Beat, it looks like their kit and I know that there are modifications done to the carb by them they also have the jet information you need.
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Originally Posted by rotarydude
(Post 9713040)
You asked for information in ref to Holley carbs and Rotarys, you need to reference information from Racing Beat, it looks like their kit and I know that there are modifications done to the carb by them they also have the jet information you need.
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Originally Posted by vj226966
(Post 9712228)
I cant stand a car that smokes and stinks.
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Originally Posted by vj226966
(Post 9712764)
The smoke is bluish,i was told to premix with a ratio of 1 to 1 I dont know what the omp is.What is the lifter rod?Sorry im a newbe.Thank you for trying to help by the way.:scratch:
The oil metering pump (OMP, or sometimes MOP) is what injects a small amount of oil into the carb. It's found on the passenger side of the front cover of the engine. Since you were told to premix, most likely the OMP has been disabled or removed altogether. If you're premixing 1 ounce of oil per gallon of gasoline, that's a 128:1 ratio by volume, as there are 128 ounces in a gallon. That ratio is fine if your OMP is disabled/removed. If it isn't, that's probably part of your smoking problem. Or it could just be a high-mileage engine in need of new oil seals. It also sounds like your carb is probably running rich. You can tell crudely by examining your spark plugs, but if you want to do any real tuning you'll need an air-fuel ratio gauge, preferably a wideband. There're lots of Holley tuning guides available on the Internet, and the principles are the same for both piston engines and rotaries. You can get a good start by following Racing Beat's recommended jet settings, which can be found on this forum (I can't be bothered right now to look them up). |
Originally Posted by PercentSevenC
(Post 9713297)
Okay, sounds like oil smoke then.
The oil metering pump (OMP, or sometimes MOP) is what injects a small amount of oil into the carb. It's found on the passenger side of the front cover of the engine. Since you were told to premix, most likely the OMP has been disabled or removed altogether. If you're premixing 1 ounce of oil per gallon of gasoline, that's a 128:1 ratio by volume, as there are 128 ounces in a gallon. That ratio is fine if your OMP is disabled/removed. If it isn't, that's probably part of your smoking problem. Or it could just be a high-mileage engine in need of new oil seals. It also sounds like your carb is probably running rich. You can tell crudely by examining your spark plugs, but if you want to do any real tuning you'll need an air-fuel ratio gauge, preferably a wideband. There're lots of Holley tuning guides available on the Internet, and the principles are the same for both piston engines and rotaries. You can get a good start by following Racing Beat's recommended jet settings, which can be found on this forum (I can't be bothered right now to look them up). |
i would suggest hooking up the omp into the float barrel of the holley and dont premix... thats wut i have done and its runnin smooth. of corse u might also mess with the tunning a little, do u know wut size jets r in the carb
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Originally Posted by jimbowatson2002
(Post 9715695)
i would suggest hooking up the omp into the float barrel of the holley and dont premix... thats wut i have done and its runnin smooth. of corse u might also mess with the tunning a little, do u know wut size jets r in the carb
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