Set-up for better 60' ?

[Cajuninjector]

Pipe dreams, did you ever get a chance to make some passes and see if you could improve your 60' times?
We have been dropping our wheelie bar and really getting some good wheel speed. 5.5 lbs of air in Goodyear 2585's. You may be able to get a set at carter maxwell right now

[Supercat]

We are also using the 33X12 Hoosiers and we got out to the track Sunday finally....
All new combo and running real rich and 32 timing 1st pass was a1.22 60'. We drove the car out like you were getting up on the highway 8.25 @ 166.
Next pass we lean out the fuel and at about 5200 rpm we blew the tires off to where I had to get out of it straighten out and get back on it.
200"FED Wheelie bar at 1.5"  tires were at 8.25psi. Leaving the line at about 3200rpm.
There is a video link in my build thread.
Any advice? It's always appreciated

[masracingtd1167]

I run that same tire on mine and we are still trying to figure out how much air to run in them . Right now 6 and a half to 7 seems to be the sweet spot . When we ran the Goodyear 1288's 6lbs worked great but the Hoosier wants more air .Bill

[Supercat]

Bill if you watch my third run from last weekend you'll see we have a positive problem to overcome I will drop to 7.0psi in the tires to see where that puts things.
If you run a wheelie bar where is your wheel hight set?
Thanks for the input

[masracingtd1167]

I set my bar with a 4x4 under the wheel with no one in the car . An inch and a half seams kind of low . When you launch your tires will squat and the chassis will arch and if your bar is too low it could unload the tires . Also with over 8 lbs in the tire it might not let the tire work right . I wold start at 7lbs and the bar at 3 inches  and have some one watch the car at the hit . Also if you put some shoe polish on your wheelie bar wheel it will tell you if you are hitting the bar or not . Keep us posted .Bill

[Supercat]

Thanks Bill  I'll give it a shot next time out. I was also very rich on the Barrel valve adjustment, which has now been set with a leakdown gauge. We are ready to go testing again, just waiting for a place to go.

[Pipe Dreams]

     Ok guy's,  I know this is a super old post, but finally got a smaller set of tires on the car. Got a really good set of 31 x 10.5 Hoosiers on the car add went testing this past week end.  After a little wheelie bar adjustment, BOOM!!! 1.15 Sixty foot  and that was leaving at 2200. 
     
This brings up another question though. When  I was testing with the old tires the car was quicker 60' leaving from  2200 with the trans brake than at 3800  and a lot more consistant. Why would the car be quicker launching at the lower rpm?  3800 to 4000 was where I was told to launch the car by the coan when I ordered the torque convertor. Did'nt get a chance to try the higher rpm with the smaller tires yet. Either way super happy the car is consistantly .05 faster in 60'.
 

[dreracecar]

are you running all out or on an index???

[masracingtd1167]

     Ok guy's,  I know this is a super old post, but finally got a smaller set of tires on the car. Got a really good set of 31 x 10.5 Hoosiers on the car add went testing this past week end.  After a little wheelie bar adjustment, BOOM!!! 1.15 Sixty foot  and that was leaving at 2200. 

     

This brings up another question though. When  I was testing with the old tires the car was quicker 60' leaving from  2200 with the trans brake than at 3800  and a lot more consistant. Why would the car be quicker launching at the lower rpm?  3800 to 4000 was where I was told to launch the car by the coan when I ordered the torque convertor. Did'nt get a chance to try the higher rpm with the smaller tires yet. Either way super happy the car is consistantly .05 faster in 60'.

 I seem to be having the same problem with my 60 ft times since I switched to the 2585 Goodyears . My 60 ft's are way off from what I was running with the 12x33 Hoosiers . I have been dropping my launch rpm and they are getting better . I started at 6400 and am now down to 4200 and the 60 ft's are getting better . I might even try 3800 the next time out .My sixty ft's started at 1.14 and I am down to 1.10 . With the Hoosier's I was around 1.07 . My other numbers are better with the Goodyears my eighth mile is better 4.70 from 4.78 and mph 148 from 145 . I have heard a lot of good things about that 10.5 tire . Just keep trying things till you find that sweet spot . Bill 

[Pipe Dreams]

I am running the car all out. Car is just a bracket car running super pro. Looking at running the 8.50 index at the NDRL race at Milan the end of sept. All passes last time out were beween  8.51 to  8.55 and the air was horrible, so I think I have a chance at doing fairly well. Sure wouldlike to run  8.0 though. Have some plans for the engine in the off season, so we' ll see next year

[masracingtd1167]

To me that's what makes drag racing fun always wanting to go quicker !

[GlennLever]

I am running the car all out. Car is just a bracket car running super pro. Looking at running the 8.50 index at the NDRL race at Milan the end of sept. All passes last time out were beween  8.51 to  8.55 and the air was horrible, so I think I have a chance at doing fairly well. Sure wouldlike to run  8.0 though. Have some plans for the engine in the off season, so we' ll see next year

Come over and say hi when you are at Milan, we will be there. I like index racing and the .004 pro tree

[Pipe Dreams]

I was wondering if you were going to be there. I will most definatly stop by and say hello.

[hemidakota]

I help a friend with his fed and we have been having 60' problems also. Been chasing the tune up thinking its the problem. Found it is not in the tune up. Changed the convertor and switched to alky injection at the same time so it made it difficult. In two weeks we will find some interesting info for us. Changed out brand X convertor to a continental convertor(more on brand x later). Went from a super 9"(9 1/2") 5000 rpm convertor to a 8" 6000-6200 rpm. We leave at 4800 before and now will leave at 5800 on two step. Will be interesting how much change we get in 60'. 60' have been 1.20 to 1.24. Hoping to get in the 1.08 to 1.10 range without doing wheel stands. Its never fast enough is the problem. Would like to see the fed in the 7.60 range soon. What do you all think?

[dreracecar]

My Flexplate (if you can call it that) weighs in at 12# and I use the inerciha to get things moving