My First 1/4 Mile Outing

dvernst said:
I just ran pretty much the identical time that you ran. My combo is a little different though. Stock heads and cam, 5858 jb turbo, ptc 9.5" non lu converter, e85, and a little alky. My mph was also 119.2, and I was around 26-27 psi boost. I made a ton of rear suspension changes since last time at the track, so I had to see if my car would still 60'. Last time I was getting consistent 1.48 60' times. This time I started with a 1.65, then a 1.53, then a 1.51. One more pass, and a little lower pressure, and I think I'm in the 1.4 range again. Time to go to a 28" tall tire!
Click to expand...

That awesome! I think the 28" tire will help you out a lot. None the less, your 60ft times are very good with the smaller tire too. That PTC 9.5 is really working for you! I plan on a PTC in the future for sure. But right now I plan on maximizing what I have for that elusive 10.99 pass. I can't wait to see how you fair with the taller tire. I'm sure there will be some improvement.
 
Raymond Bunch said:
That awesome! I think the 28" tire will help you out a lot. None the less, your 60ft times are very good with the smaller tire too. That PTC 9.5 is really working for you! I plan on a PTC in the future for sure. But right now I plan on maximizing what I have for that elusive 10.99 pass. I can't wait to see how you fair with the taller tire. I'm sure there will be some improvement.
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I would've put my 28" tires on that day, but there was 300 cars at the track. I got 3 passes in 5 hours. I never got a chance to go to the pits. If I can keep my 60' times the same I'll be in the 10's for sure. I would really like to do it with the 26" tires though. On my 2-3 shift my rpms are only getting to 4900, so I might pick up a little if I manually shift it. I tried at the track, but I shifted too late on 2 passes. Have to figure out the right spot to shift it.
 
Congrats RB!
Your doing well with little you have. PTC gave me 3mph across the board without any changes.
 
TT/Ameasap said:
Congrats RB!
Your doing well with little you have. PTC gave me 3mph across the board without any changes.
Click to expand...

Thank man. A PTC converter is in the plans for sure. If I can't make any improvements with what I currently have. I'll be getting one after the New Years.
 
dvernst said:
I would've put my 28" tires on that day, but there was 300 cars at the track. I got 3 passes in 5 hours. I never got a chance to go to the pits. If I can keep my 60' times the same I'll be in the 10's for sure. I would really like to do it with the 26" tires though. On my 2-3 shift my rpms are only getting to 4900, so I might pick up a little if I manually shift it. I tried at the track, but I shifted too late on 2 passes. Have to figure out the right spot to shift it.
Click to expand...

I was in the same boat, long lines, cars breaking, etc. I only got 4 passes in that day. I thought I was going to get more in so I turned the boost down and and added fuel in 3/4th gear on the first two passes to be safe. I should have just left my tune where it was and went all out...and got more aggressive later in the day. Oh, well.

I need to see where my shift points are too. I may try shifting manually and see if I can improve my times next time out for fun. Hope you reach 10's man! Very respectable for a street car!
 
dvernst said:
Have you tried figuring what what % your converter is slipping?
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Not yet. PL still isn't installed yet. My mph from the 1/8 to 1/4 seems to be good though. Now that I know how to launch the car, I will be more consistent. I think there still a lot of room for improvement getting the 60ft down which will help a little. I'm also going to throw a couple more pounds of boost at it. I want 98mph in the 1/8, this is my main focus now...
 
I just did the Wallace Racing converter Slip Calculator. It calculated 7.76 % slippage.

I don't know how accurate the calculator is.... But, if it's real 7.76 % I'll take it! lol
 
bison said:
Go and measure your tire height and give an educated guess on growth and then pi times radius


BPE2013@hotmail.com
Click to expand...

Ok, I'll try this and see what I come up with. Never done this before, so bare with me... lol One question...

I assume, I should measure the tire height with 17 psi in them which is what I race with...correct?
 
[/QUOTE] I had mine at 17° in 3rd.[/QUOTE]

Maybe I will experiment with my car this Saturday at the 1/8 mile track here. Nearest 1/4 mile won't be open this weekend. Unless, I decided to drive to another track (Famoso) that is in Bakersfield, CA 5 hours away... Hmmm, I might!

Hey, Did you see any difference having it at 17* in 3rd?

I know a lot of guys run lower timing with higher boost with good results.
 
Street Lethal said:
Wow, even with alky I would be cringing at 30-psi. Curious to see your results...
Click to expand...

I'm not scared ;) lol

On this note; When I ordered my turbo tweak chip, I ordered it around future upgrades. I.E Ported heads, bigger turbo, 212-212 roller cam, etc... My challenge now with my stock engine is to lean it out safely enough to run a 10.99 with its current mods. Hopefully this will eventually materialize....:confused:

If and when this goal happens...I will continue to use this chip which aforementioned is already burned for a bigger and badder combo... I know, I'm kinda different, but that what I love about the turbo tweak chips! You can experiment adjust fuel, timing, etc.
 
Raymond Bunch said:
I'm not scared ;) lol

On this note; When I ordered my turbo tweak chip, I ordered it around future upgrades. I.E Ported heads, bigger turbo, 212-212 roller cam, etc... My challenge now with my stock engine is to lean it out safely enough to run a 10.99 with its current mods. Hopefully this will eventually materialize....:confused:

If and when this goal happens...I will continue to use this chip which aforementioned is already burned for a bigger and badder combo... I know, I'm kinda different, but that what I love about the turbo tweak chips! You can experiment adjust fuel, timing, etc.
Click to expand...
Why would you want to chase the fueling with a chip that is loaded with fuel at higher rpm? You should order 5 turbo tweak chips with different fueling/timing for different boost and have the block learn locked at WOT.


BPE2013@hotmail.com
 
just so you guys know... On the 11.3 pass I had the chip set at the following:
WOT Fuel 127 from 128 My O2's were still good! First time I took fuel out from WOT.
1st gear spool up 117 from 128
1/2 gear timing 23*
3/4 gear timing 21*
 
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