lelle106

Mustang GT 2005+ built or not build engine? I now have 11,5 PSI in my -05 GT auto no built engine, 3,73 did 12,17 last wekend. I have yet another smaller wheel for my Kenne Bell but i dont know if i dare? Help me, is it to push too much?

Thanks in advance

HiRoller

There are alot of variables. How aggressive is your tune?? A/F ratio?? How much timing are you running?? With 11.5 psi, you should be running into the 11's. What's your trap speed when you ran 12.17???? 60foot time?? Rather than up the boost, maybe you should maximize what you have already. Are you running with drag radials???

lelle106

Hi HiRoller
Yes i run with drag radials, 60 foot 1,69 180km/h about 112m/h. The car is standard exept lowered, extra stereo.
Had really good grip, hard to think getting in too 11's but i hope. And tune is Kenne Bell's. There isnt any tuner or/and dyno around here.

Correct number 179,95km/h 111,8157m/h 201m 7,746 402m 12,172 60foot 1,689

Ive seen that you in US always drive faster than here i Sweden, dont know why, maybe youre just more experience, better track?

This was my first drive on a real track, a couple of test on a airfield befor only. Im sure there's a lot i could/should do on the car to get better track time but im more in it for the power since I dont get many oportunies (spelling?) to drive on a track.

hawgman

I agree with HiRoller. Instead of increasing boost, work on suspension and driving. There is a lot more to good track times than horsepower.




Why are you doing burnouts on plywood?

lelle106

The bournout is made on a steelplate, we only borrow an airfield for a couple of hours and were not allowed to burn rubber on the tarmac.

I know theres other things to work on the car for better times, but thats not the issue. I want to know how much i can get out of the engine with and without build engine.

The track is not priority nr 1 just some fun a couple times a year, more for burning some rubber and making some marked..drifting would be fun also but theres not any place to do them safe.

Isnt thats what life is all about having fun?

psfracer

How much boost you can run is going to depend mainly on your total timing at WOT and the type of gas you use.

So---1) what is your total timing at WOT (If the standard KB tune, I think its 25 degrees) and 2) what octane gas are you running?

I run at least 104 (minimum) at 16 psi with 21 degrees of timing. On the street, 13psi with only 17 degrees total timing--because pump gas over here in the states is only 91 octane. I have a built bottom end with cobra crank, scat rods, JE pistons.

112 mph is enough to get you into the 11's, but not with that 60'time of 1.68. However, being that your racing at an airport, I would think they probably don't prep the track much, in which case 1.68 60' isn't bad with the conditions your racing in.

Error404

I'm just shy of 450hp to the ground with 10psi whipple and an auto transmission. I don't dare push any more. I had my tuner air on the conservative side and make it a touch rich, but still I know that I'm flirting with danger as it is already. I have funds set aside to fix anything if anything goes. torque converter has alreayd been replaced.

lelle106

Hi Psfracer

Yes i belive KB run 25 degrees timing. Here in Sweden the best pump gas we have is 99 but i belive your 93 is the same as our 98? I run 98 to 9psi and 102 (race gas at 35kr/liter) normal gas about 12 kr/liter to 11 psi. What im tinking is if there is any chance not to blow the engine att 13 psi?
98 octane cost about $68,51/gallon and thats best i can get here in the north of Sweden at the gasstation. 102 octane i have to order a barrel 195liter 51,51 gallon, at the cost of $19,2/gallon! 1 gallon is 3,78 liter and the dollar about 6,90 skr.

I will build a better botom this winter IF the car will pas the yearly checkup, new car 3 year next time 2 year then every year. An they dont like blower on the Mustang, but stranger things have happend. IF i pass i have 2 yeare to next check up and then i will fix engine and Auto-trans during winter.

The time is from a pretty good real race track (i had no spin that i can see/feel) the picture from the airfild. The thing is i have run 12,61 at the airfield with the 8-9 psi setup? but at the strip my best time at 8-9 psi was 12,64 and 106,61 m/h 60 foot 1,79. At the 11 psi setup i run the 12,17?

Feel free to coment

hawgman

Absolutely the most accurate statement you will come across.

Hummm.. that's not entirely true. I never put anything in mine but 93 octaine pump gas. You might want to rephrase your statement to say the octaine available is regional.

I don't even bother running a "race" tune because when my car does see the track, I run it in complete overweighted street trim. I'm not doing it for the bragging rights, I do it for the fun of it. Even still, I am running mid 11s on a street tune, 93 octaine, 17* of timing, 10psi, and 500 to the wheels.

And I completely agree with Paul. The 60' times indicate one of three things ( or any combination of the three ): Bad track, need suspension, or need practice. If you say the track is good, then that narrows it down to two things

anthony05gt

So, I guess that air field in Sweden doesn't have any VHT type of track prep on it? A prepped track will get that car in the 11's, but it would be hard on the tranny. Any clutch pack slippage on the 5r55s trannies is what kills them. I'd be more worried about the trans.

Fords4Ever

Lelle106,

I think your wheel/tire combo is the perfect size. Can you tell me what size they are and who makes the wheels and the tires?

Your car looks great!

Thanks,
Kelly

lelle106

Hello Kelly and sorry im late.
The Wheels ar from MRT direct and size 18x9 tire BFGoodrich T/A KD 275/40 back and 245/40 front.

Thanks for your thougts

SlamMan02

Whats the update on your Boost/Tune situation? There are quite a few guys over at Modularpowerhouse.com that are pushing the envelope on stock internals running 12,14+ psi but are doing so on VERY good dyno tunes and I would be leery of running that on a KenneBell mail-order tune.. But that is just my opinion.

anthony05gt

I'd never run more than 8-9 psi on a mail order tune.

lelle106

Hello SlamMan

No new tuning, there are no one around here that can do a tuning so im stuck to Kenne Bell's tune.

Im now considiring to build my engine, and thinking to put in new piston and rods. Not crankshaft and go 13-14 psi. Or go all the way Crank and everything but then ill have to send the gerbox to the US for rebuild.
Then go for 20psi?

Any thoughts?

metroplex

If you don't break anything, you're not racing hard enough.

dhof303

6# of boost, stock motor, KB 40amp BAP, 39# injectors, 3rd gear, 4500rpm.
Boom.
Derek


Oh, I forgot to mention it was preceded by a year of 125hp N20 racing on the NMRA circuit.