72mm vvt stock motor setup.

Cknight199

Cknight199

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Here's my setup if anyone was wondering:

I'm running Nitto 420's right now and that about as sticky as a tire I can get. 305/50/r20

Tried all different psi's with the best being 20 front 18 rear.

1.822 is the best 60' and that's what I did my 13.342 on. No hitch or spare.

Now I plan on bumping my tune up to the tune that I dynoed on (2900 us) and removing my back seat, sub, amp, possibly passenger seat, battery, tailgate, maybe even a bumper and get a roll pan.

I also am replacing my cognito braces with all seasons brace hopefully to get a 1.7 60' does the burnout box even do anything for street tires? I've never used it but sometimes I see a completely street tire, even mud terrains, attempt a burnout. Does it even work with street tires?
 
TheBac

TheBac

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No, I didnt just mean the "UT guys". Trent Nell was a UT guy, and I had an incredible amount of respect for what he did.

You've just got to accept that you cant do anything about where you live. You keep trying to add more air and fuel to that stock motor just to hit 12.99, you'll pop it before you hit your goal. Reread what I wrote my last post. You could be in the 12s right now, but you have to work on your driving (hell -- you only went your first time a month ago), get some sticky tires to help get your 60ft down, and you must remove weight from that truck in order to do it. You may possibly have to run a larger tune, but thats risky.

If you dont want to listen b/c its not what you want to hear (like most teens -- I have two), then we cant help you.
 
Cknight199

Cknight199

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TheBac said:
No, I didnt just mean the "UT guys". Trent Nell was a UT guy, and I had an incredible amount of respect for what he did.

You've just got to accept that you cant do anything about where you live. You keep trying to add more air and fuel to that stock motor just to hit 12.99, you'll pop it before you hit your goal. Reread what I wrote my last post. You could be in the 12s right now, but you have to work on your driving (hell -- you only went your first time a month ago), get some sticky tires to help get your 60ft down, you must remove weight from that truck, and possibly run a larger tune (but thats risky) to do it.

If you dont want to listen b/c its not what you want to hear (like most teens -- I have two), then we cant help you.
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Just to be clear I went my first time in April, but I do agree that I am not as nearly experienced as other racers. But you've got to learn somewhere. I've tried leaving at every psi possible as well.

I know elevation sucks :( I never knew how much it affected these trucks till I started racing. I would love to have a race in California or Las Vegas but it's just not going to happen right now :/
 
TheBac

TheBac

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Cknight199 said:
Here's my setup if anyone was wondering:

I'm running Nitto 420's right now and that about as sticky as a tire I can get. 305/50/r20 Good tire....but you have HEAVY 20" wheels. Theres a reason a lot of people run the stock PY0s -- they are light.

Tried all different psi's with the best being 20 front 18 rear. That seems low to me. But then, I dont run 20s.

1.822 is the best 60' and that's what I did my 13.342 on. No hitch or spare. Keep working at it. Find your best launch rpm. Figure out what starting line procedures you are most comfortable with, and learn to repeat them. Pat has posted some GREAT tips on staging and racing in general. IdahoRob is another person I get my advice from.

Now I plan on bumping my tune up to the tune that I dynoed on (2900 us) and removing my back seat, sub, amp, possibly passenger seat, battery, tailgate, maybe even a bumper and get a roll pan. You may want to try something a bit less at first -- you may not need the "big tune" to do it. You want to keep rail pressure up -- thats key.

I also am replacing my cognito braces with all seasons brace hopefully to get a 1.7 60' does the burnout box even do anything for street tires? I've never used it but sometimes I see a completely street tire, even mud terrains, attempt a burnout. Does it even work with street tires? I always drove around the water box. Street tires dont work well wet, and you'll piss off the other guys with water on the track.
Click to expand...

In red. I've tried to help. Cant do anything else for you.
 
Cknight199

Cknight199

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TheBac said:

In red. I've tried to help. Cant do anything else for you.
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Okay thanks that's what I was looking for :) any idea how much a stock wheel weighs?...

Sorry if I don't seem like I take anyone's answers. But I do, I'm just stubborn I guess, and have way to much free time at school so I think about trucks all day which is probably a bad habit :)
 
TheBac

TheBac

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Cknight199 said:
Okay thanks that's what I was looking for :) any idea how much a stock wheel weighs?...

Sorry if I don't seem like I take anyone's answers. But I do, I'm just stubborn I guess, and have way to much free time at school so I think about trucks all day which is probably a bad habit :)
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IIRC, stock PY0 weighed 16lbs. Id have to get one from the garage to make sure. The weight is listed in an old thread somewhere.

Teens do that....but you wouldnt tell your teachers they didnt know what they were talking about all the time, would you? Experience does matter.
We're here to help each other do better, whether it be racing or pulling or whatnot. Thats the goal.
 
Cknight199

Cknight199

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TheBac said:
IIRC, stock PY0 weighed 16lbs. Id have to get one from the garage to make sure. The weight is listed in an old thread somewhere.

Teens do that....but you wouldnt tell your teachers they didnt know what they were talking about all the time, would you? Experience does matter.
We're here to help each other do better, whether it be racing or pulling or whatnot. Thats the goal.
Click to expand...

Whoa those are way lighter than I thought they would be!

I see where your coming from, and that's why I love this forum over all the others, simply because this forum has great info!
 
Chevy1925

Chevy1925

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Cknight199 said:
I believe that twins work a lot better than a single in high elevations, simply because the larger charger pressurizes the air before it even enters the primary and "fools" the primary into thinking that it's receiving 15+14.1 (or whatever the oxygen density is at the given altitude) psi.

Now let me ask this. Would this work? Having an s475, s480, or s483 over the 72 just to increase the air?
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Your thinking is way off. Your small turbo could careless what big turbo is feeding it when your trying to spool.

It's harder to create the higher drive pressure needed to drive a big single in high altitudes because it can not make the power it can before boost comes on in lower elevations. Smaller turbos take less drive pressure to build boost, hence why stock spools so easy.

Putting a bigger turbo infront of your will make spool up a bit slower if anything.

At 99mph, your gunna be hard pressed to get it in the 12s. You need to turn the wick up to do it or be happy with where your at if your afraid of blowing the motor. When I put twins on, I was gunna be happy with a 13.5. I wound up hitting a 13.04 at 105 with a 1.92 sixth foot on a 2800uS tune. First and last time it hit the track with twins on a stock motor as I bent the rods on the way home that night. I had the mph for 12s easy but on 37s and 7800lbs, I couldnt 60ft to save my life so regardless of your altitude, weight, tires, ect, if you can set your suspension up decent, have steering in good shape and load a big tune in it, you should be in the 12s but your gunna have to work for it and do your research cause to go faster from there it's gunna take more and more work.

I've lucked out each time I ran my trucks and blown way past my time goal but its all due in part to making sure everything is ready for the task and setup for the truck. If I put some more time in it. She has an 11 in her
 
SickLL7Crenshaw

SickLL7Crenshaw

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Cknight199 said:
1. I don't run that tune at the strip.
2. I'm at 7100 DA
3. Have crappy track prep

If you want to give feedback on how to get into the 12's with my current setup, I'm all ears. If you have anything to say about diesel, I'm all ears.
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I was running 12.8s@106/107 consistently at tuff truck challenge this year in ALB on a 2300US tune. Elevation is mile high and DA was 9000ft that night. Ran my 12.4@109 on a 2500US tune at 7000DA in Amarillo last year. Throw some PYO's on with some 265s 35psi in front, 25-28psi in rear, left t-bar bolt out, pass side t-bar cranked 2 turns for preload when you launch. I have trac bars but I went ahead and put clamps on my springs which I think helped out a lil. Go out and do some launches to find that sweet spot, watch your rail pressure on big tune if it holds go to track come back and show us your improvement.
 
Cknight199

Cknight199

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SickLL7Crenshaw said:
I was running 12.8s@106/107 consistently at tuff truck challenge this year in ALB on a 2300US tune. Elevation is mile high and DA was 9000ft that night. Ran my 12.4@109 on a 2500US tune at 7000DA in Amarillo last year. Throw some PYO's on with some 265s 35psi in front, 25-28psi in rear, left t-bar bolt out, pass side t-bar cranked 2 turns for preload when you launch. I have trac bars but I went ahead and put clamps on my springs which I think helped out a lil. Go out and do some launches to find that sweet spot, watch your rail pressure on big tune if it holds go to track come back and show us your improvement.
Click to expand...

Unfortunately I don't have pyos :(
 
H

Hot COCOAL

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Chevy1925 said:
Your thinking ....., you should be in the 12s but your gunna have to work for it and do your research cause to go faster from there it's gunna take more and more work.

I've lucked out each time I ran my trucks and blown way past my time goal but its all due in part to making sure everything is ready for the task and setup for the truck. If I put some more time in it. She has an 11 in her
Click to expand...

And more and more money, put into the right places

6 P's, huh James:D

Is it safe to say I have been de-throned? :roflmao::rofl::D:joker:

:rolleyes:
 
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