Best way to slow car

Old 12-26-2011, 07:36 AM
  #11  
shawnp
Senior Member
RACING JUNKIE
 
Join Date: Mar 2003
Location: Ohio
Posts: 937
Default

Launch at 3600 and shift it at 4400 as a start. Go up on the launch and shift 200 rpm until you find your ET.
shawnp is offline  
Old 12-26-2011, 03:22 PM
  #12  
toms131
Junior Member
APPRENTICE
Thread Starter
 
Join Date: Jul 2007
Posts: 12
Default

I run a toilet bowl,so changing air input I would have change to change complete tune up,no throttle stops are allowed in this class,car weighs about 2500# with me,taking off in high could be pricey after a while,have tried leaving easier and shifting early,can't seem to find a consistent combo,Iam considering buying another pumkin and starting with maybe a 4.56 ratio and working from there.Hey Lively if I was driving a ford I'd already be running a 5.90.
toms131 is offline  
Old 12-26-2011, 03:39 PM
  #13  
fla1976
Senior Member
RACING JUNKIE
 
fla1976's Avatar
 
Join Date: Aug 2007
Posts: 1,535
Default

Here is a website with an innovative way to slow your car down.

http://www.etgenie.com/
fla1976 is offline  
Old 12-26-2011, 06:17 PM
  #14  
hammertime
Senior Member
RACING JUNKIE
 
Join Date: May 2003
Location: Coldwater, MI
Posts: 2,998
Default

Originally Posted by toms131
I run a toilet bowl,so changing air input I would have change to change complete tune up,no throttle stops are allowed in this class,car weighs about 2500# with me,taking off in high could be pricey after a while,have tried leaving easier and shifting early,can't seem to find a consistent combo,Iam considering buying another pumkin and starting with maybe a 4.56 ratio and working from there.Hey Lively if I was driving a ford I'd already be running a 5.90.
I have to ask .. why would taking off in high get pricey after awhile ?
hammertime is offline  
Old 12-26-2011, 07:23 PM
  #15  
bbchevy
Senior Member
RACING JUNKIE
 
Join Date: Mar 2003
Location: Fountain,MICHIGAN
Posts: 856
Default ?

What GOOD is a PUMPKIN going to do?
Halloween is LOOOOOOOONG Gone!!
Later
G 8)
bbchevy is offline  
Old 12-26-2011, 08:26 PM
  #16  
zipper06
Senior Member
RACING JUNKIE
 
Join Date: Jan 2006
Location: La.
Posts: 2,890
Default

toms131,
A stop screw under the peddle (as Todd74 suggested) is not considered a throttle stop. We did this with Jimmy Smiths car (a member here on RJ) when he was running a stacks injection on Alcohol. The car would run .650's and he wanted to run the 7.00 class, so i'm sure it would work a toilet bowl, and it doesn't effect the 60' times that much.

JMO

Zip.
zipper06 is offline  
Old 12-28-2011, 04:29 PM
  #17  
toms131
Junior Member
APPRENTICE
Thread Starter
 
Join Date: Jul 2007
Posts: 12
Default hammertime

Not knowing that taking off in high gear will hurt my trans for sure,but I did try it like 3 pass's in a row and noticed that trans temp seemed to get higher than normal every pass so I went back to low gear launches just to be safe.It may be o.k. for dragsters and cars lighter than mine,I just can't afford a trans and didn't want to risk it.
toms131 is offline  
Old 12-29-2011, 05:19 AM
  #18  
hammertime
Senior Member
RACING JUNKIE
 
Join Date: May 2003
Location: Coldwater, MI
Posts: 2,998
Default Re: hammertime

Originally Posted by toms131
Not knowing that taking off in high gear will hurt my trans for sure,but I did try it like 3 pass's in a row and noticed that trans temp seemed to get higher than normal every pass so I went back to low gear launches just to be safe.It may be o.k. for dragsters and cars lighter than mine,I just can't afford a trans and didn't want to risk it.
It should be a little more heat but not more then 20 degrees more then normal, its just slipping the converter more. A lot of 9.90/10.90 cars run high gear only. Car weight really has nothing to do with it, its generally how good or bad the parts are in your trans is all.
hammertime is offline  
Old 12-29-2011, 03:06 PM
  #19  
TS1955
Senior Member
DYNO OPERATOR
 
Join Date: Aug 2007
Location: Lost Creek, WV
Posts: 533
Default Re: hammertime

Originally Posted by hammertime
Originally Posted by toms131
Not knowing that taking off in high gear will hurt my trans for sure,but I did try it like 3 pass's in a row and noticed that trans temp seemed to get higher than normal every pass so I went back to low gear launches just to be safe.It may be o.k. for dragsters and cars lighter than mine,I just can't afford a trans and didn't want to risk it.
It should be a little more heat but not more then 20 degrees more then normal, its just slipping the converter more. A lot of 9.90/10.90 cars run high gear only. Car weight really has nothing to do with it, its generally how good or bad the parts are in your trans is all.
How do you use a tranny brake leaving in high gear?

TS1955
TS1955 is offline  
Old 12-29-2011, 03:16 PM
  #20  
shawnp
Senior Member
RACING JUNKIE
 
Join Date: Mar 2003
Location: Ohio
Posts: 937
Default

You leave in low gear and shift it within 600-800 rpm of the launch. You want the low gear launch so you still hit the tire to get out of the beam but you are shifting quick enough that you most likely won't get a full revolution out of the tire. When I do this with the dragster I can go from running 4.80 to 5.20-5.30. All out the car will mph 145-146 and shifting right away to high gear the car will run 141-142mph. I have done this 1/8 and 1/4 mile. No issues with heat and my converter is very loose.

If this is inconsistent for you, the launch rpm may need raised. Where do you normally launch and shift your car at? Is it a glide or 3 speed?
shawnp is offline  

Contact Us Archive Advertising Cookie Policy Privacy Statement Terms of Service