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need to slow it down

Posted By: savoyracer

need to slow it down - 09/01/12 11:40 PM

Car runs 9.60's and I want to get it above 10.00's.....buddy of mine has a similar et, and he disconnected the secondaries on the carb, dropped him into the 10.20's. that is what I would like to do. So, my question is will that make the car run lean??
Posted By: mcat4321

Re: need to slow it down - 09/02/12 12:22 AM

it wont you are stopping air and fuel from the back barrels plus im pretty sure it will still siphon some fuel from the back also... you will be fine
Posted By: MR_P_BODY

Re: need to slow it down - 09/02/12 01:00 AM

Quote:

Car runs 9.60's and I want to get it above 10.00's.....buddy of mine has a similar et, and he disconnected the secondaries on the carb, dropped him into the 10.20's. that is what I would like to do. So, my question is will that make the car run lean??




I slowed my car with a mech throttle stop... it goes
about 1/3 throttle then I adjust the launch rpm and
the shift point... you would need to take way too
much timing out so I wouldnt even look at that...
with the mech stop it opens both blades some so
you get equal distribution
Posted By: savoyracer

Re: need to slow it down - 09/02/12 04:59 AM

Quote:

Quote:

Car runs 9.60's and I want to get it above 10.00's.....buddy of mine has a similar et, and he disconnected the secondaries on the carb, dropped him into the 10.20's. that is what I would like to do. So, my question is will that make the car run lean??




I slowed my car with a mech throttle stop... it goes
about 1/3 throttle then I adjust the launch rpm and
the shift point... you would need to take way too
much timing out so I wouldnt even look at that...
with the mech stop it opens both blades some so
you get equal distribution



...............When you say a mechanical throttle stop, you mean that you are just blocking the throttle linkage from opening up more than a third of the way?........and i would not need to adjust the timing?
Posted By: MR_P_BODY

Re: need to slow it down - 09/02/12 05:23 AM

Quote:

Quote:

Quote:

Car runs 9.60's and I want to get it above 10.00's.....buddy of mine has a similar et, and he disconnected the secondaries on the carb, dropped him into the 10.20's. that is what I would like to do. So, my question is will that make the car run lean??




I slowed my car with a mech throttle stop... it goes
about 1/3 throttle then I adjust the launch rpm and
the shift point... you would need to take way too
much timing out so I wouldnt even look at that...
with the mech stop it opens both blades some so
you get equal distribution



...............When you say a mechanical throttle stop, you mean that you are just blocking the throttle linkage from opening up more than a third of the way?........and i would not need to adjust the timing?




Correct.... I put a short pretty stiff spring on the
throttle cable to the carb also... if you have the
type of cable that is adjustable you can slide it
forward so you dont break the cable(mine isnt adjustable)
and no I dont touch the timing.... I was doing this
so I could run multiple classes with a quick and
easy way to change over..... this is the throttle
stop I made to fit my dom


Attached picture 7361042-DSC00042.JPG
Posted By: Mr.Yuck

Re: need to slow it down - 09/02/12 02:22 PM

Could you short shift it or take some throttle out of the car?
Posted By: savoyracer

Re: need to slow it down - 09/02/12 02:37 PM

Quote:

Quote:

Quote:

Quote:

Car runs 9.60's and I want to get it above 10.00's.....buddy of mine has a similar et, and he disconnected the secondaries on the carb, dropped him into the 10.20's. that is what I would like to do. So, my question is will that make the car run lean??




I slowed my car with a mech throttle stop... it goes
about 1/3 throttle then I adjust the launch rpm and
the shift point... you would need to take way too
much timing out so I wouldnt even look at that...
with the mech stop it opens both blades some so
you get equal distribution



...............When you say a mechanical throttle stop, you mean that you are just blocking the throttle linkage from opening up more than a third of the way?........and i would not need to adjust the timing?




Correct.... I put a short pretty stiff spring on the
throttle cable to the carb also... if you have the
type of cable that is adjustable you can slide it
forward so you dont break the cable(mine isnt adjustable)
and no I dont touch the timing.... I was doing this
so I could run multiple classes with a quick and
easy way to change over..... this is the throttle
stop I made to fit my dom



...............Looks like that will work for me also, going to give it a try, Thank You
Posted By: savoyracer

Re: need to slow it down - 09/02/12 02:41 PM

Quote:

Could you short shift it or take some throttle out of the car?


.........could not get anything consistent with the short shift, going to try Mr P's idea about the throttle stop
Posted By: MR_P_BODY

Re: need to slow it down - 09/02/12 02:46 PM

Quote:

Quote:

Could you short shift it or take some throttle out of the car?


.........could not get anything consistent with the short shift, going to try Mr P's idea about the throttle stop




Doing it the way I was I ran 8 passes in a row at
10.00 with a total variance of .008 for the day...
I was slowing it down to run the 10.0 class... then
I would pull off the stop and run S/P... would take
me about 2 minutes to change over
Posted By: dvw

Re: need to slow it down - 09/02/12 04:29 PM

I do it Mikes way. Two N/SS championships and many top fives in points. When you figure it out you can move the car .01.
Doug
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