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-   -   Holley 465 questions. (https://www.rx7club.com/1st-generation-specific-1979-1985-18/holley-465-questions-880460/)

vj226966 01-02-10 12:44 PM

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:(

rotary84 01-02-10 12:46 PM

lol my car does the same, running to rich maybe?

vj226966 01-02-10 01:13 PM


Originally Posted by rotary84 (Post 9712181)
lol my car does the same, running to rich maybe?

i guess how do i fix it.I cant stand a car that smokes and stinks.Any ideas?

vj226966 01-02-10 01:34 PM


Originally Posted by vj226966 (Post 9712228)
i guess how do i fix it.I cant stand a car that smokes and stinks.Any ideas?

can someone shed some light?

trochoid 01-02-10 02:46 PM

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.

vj226966 01-02-10 03:56 PM


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.

Ok how about smoking?The person i bought the car from swears it did not smoke until the Holley was put on.Yes the rats nest is of,but the cat is still on it though.

trochoid 01-02-10 05:06 PM

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?

vj226966 01-02-10 05:28 PM


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?

it smokes when it starts and when you rev it.The smell is like its running real rich.it burns your eyes bad.

rotarydude 01-02-10 06:27 PM

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

PercentSevenC 01-02-10 06:56 PM

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?

vj226966 01-02-10 07:16 PM


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?

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:

vmarx7@yahoo.com 01-02-10 07:32 PM

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

vj226966 01-02-10 08:30 PM


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

Thank you.Ill try to find a manual online.You dont think its oil seals like someone posted?

vmarx7@yahoo.com 01-02-10 09:07 PM

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)?

vj226966 01-02-10 09:17 PM


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)?

yes 1 to 1.Does timing have an effect with it also?I found the Holley manual on there website but sas nothing about rotary motors.

vmarx7@yahoo.com 01-02-10 09:31 PM

read the repair/rebuild pages
you need to disassemble the primary fuel bowl & identify what # jets are installed

vj226966 01-02-10 09:46 PM


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

thank you.im going to try and adjust the settings tomorrow and go from there.Thank you for your help.I will give you update.Thanks again.:icon_tup:

rotarydude 01-02-10 10:20 PM

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.

vj226966 01-02-10 10:34 PM


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.

cool i will ceck that out.Thanks for all the help.:icon_tup:

vj226966 01-02-10 11:02 PM


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.

cant find any useful info on Racing Beat website so i guess i ave to call them.I see alot of people looking at this thread i could use any imput.

rxtasy3 01-02-10 11:03 PM


Originally Posted by vj226966 (Post 9712228)
I cant stand a car that smokes and stinks.

boy did u buy the wrong type of car. the holley is known to run rich on a rotary. get a kit and give it a good cleaning.

PercentSevenC 01-03-10 01:29 AM


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:

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).

vj226966 01-03-10 10:45 AM


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).

Just got up,late night.The omp is not hooked to the carb,they are plugged off.I got some yard work to do then i will check plugs.Thanks again for your help.I will let you know my later.findings

jimbowatson2002 01-04-10 02:00 PM

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

vj226966 01-04-10 02:19 PM


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

no i dont know what size jets are in the carb.How could i hook omp into the float barrel?I have to take carb apart to check floats?


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