Drag Racing Results - M/T DR didn`t work!!!

Went to the track saturday night happy with my new M/Ts hopping for low 12s. I ran a couple of 12.8 ,12.7 , 12.6 with a 2.1-2.2 crappy 60`, my best was:

R/T .260
60 2.006
330 5.464
1/8 8.212
Mph 88.98
1000 10.640
1/4 12.598
Mph 112.43

I am pleased with the times since my mods are only LTs, tsp true duals, spec3 + steel flywheel and a lid, adjustable Tq arm.

spare tire and Jack + rearseat where taken out.



I was very dissapointed with M/Ts ,they didn`t hook as I thought , the best I could do was 2.006 60`, I did almost 8 passes with a tire pressure between 22-15 .

does anybody had any difficulties getting those MTs on a M6 under the 2.000 60`? any comments?

MT doesn't recommend those for manual trannied cars, but I know several guys have still cut 1.6x short times with an M6. The problem isn't the tires, its something else.

2.xxx 60 is bad even for street tires.

Work on the launches.
If you were spinning then you werent doing a long enough burnout.

15 psi with a GOOD burnout should get you some 1.8 or quicker short times. the tires love to be heated.

i cut many 1.6x 60' with my stalled automatic on these tires. i have next to no susp. mods...only sfcs, lcas, and !frontswaybar.

i totally disagree with the above post. 21 psi and a small burnout. for the radials to work, you cant shock the tire. you will have to slip the clutch adn that tire WILL hold. if you are dumping the clutch or the track is trashed, you will spin.

many many many of us have gone 1.4 60' (myself included) and under on this tire.

i totally disagree with the above post. 21 psi and a small burnout. for the radials to work, you cant shock the tire. you will have to slip the clutch adn that tire WILL hold. if you are dumping the clutch or the track is trashed, you will spin.

many many many of us have gone 1.4 60' (myself included) and under on this tire.

I agree , i saw sub 1.8 on prepped track so keep practicing :)

peace

Yeah, I cut a 1.60 on M/T drag radials w/ an M6, stock shocks, and lowered suspension. These tires are good. Something else is definitely wrong. Could be a loose nut behind the wheel :jest: Sorry, I couldn't resist...

Yeah, I cut a 1.60 on M/T drag radials w/ an M6, stock shocks, and lowered suspension. These tires are good. Something else is definitely wrong. Could be a loose nut behind the wheel :jest: Sorry, I couldn't resist...

Impressive but certainly not the norm. MT does not recommend these for stick cars. If you're making decent power and dumping the clutch they won't hold, at least not consistenly.

Impressive but certainly not the norm. MT does not recommend these for stick cars. If you're making decent power and dumping the clutch they won't hold, at least not consistenly.

Well, I got away with it because my clutch was close to being gone and slipping alittle. Now I have a stalled a3 so they don't hold very well. Thats why I'm going w/ Hoosier QTPs. :)

I've had good luck with these, best of 1.52 60 foot on 275/60/15 size. 8" rim, 17-18 psi, 2-3 burnout and they hook! As mentioned above by a few, stick cars need more finesse likely as opposed to an auto.

Derek

well the way i did it is setting the tire pressure at 15 psi( thats for the best run) and did a reasonable smokey burnout , steped on the line and holded the clutch at 2600 rpm and slipped it .( I tried dumping , but 60` was worser) .

stock springs and shocks too.

Are you on stock suspension?

Were you getting bad wheel hop?

Are you on stock suspension?

Were you getting bad wheel hop?

ya stock suspension.

wheel hop!! what I know it is usually found in trucks because they run leaf springs. but ya no wheel hop.

I have to go down to 13 lbs. before they really start to bite.

ya stock suspension.

wheel hop!! what I know it is usually found in trucks because they run leaf springs. but ya no wheel hop.

Not just trucks experience wheel hop :P

i totally disagree with the above post. 21 psi and a small burnout. for the radials to work, you cant shock the tire. you will have to slip the clutch adn that tire WILL hold. if you are dumping the clutch or the track is trashed, you will spin.

many many many of us have gone 1.4 60' (myself included) and under on this tire.


I agree I run 22psi small burnout and cut 1.32s on spray the best of a 1.44 on motor.

Even when I had stock suspension they hooked very well for me. Thats when I got my best 60 ft of a 1.32

If I can find one of my burnout videos I will post it for you. Not much of a burnout is needed with MT DRs

Ok heres one. This is a little more then needed but smaller then i have seen them do.

this was a low 1.3x 60 ft.

http://media.putfile.com/burnoutLS1Tech

That wasnt a very long burnout, but those things started to smoke FAST :P

Ok heres one. This is a little more then needed but smaller then i have seen them do.

this was a low 1.3x 60 ft.

http://media.putfile.com/burnoutLS1Tech

Thanks for finding me the video, I did a simialar burnout but yours started smoking very fast :eek2: .

I dont know whats the problem, I used nitto on my old m6 car and i cut 1.5 on them ....ummm looks like I need another visit to the track soon :eyes:

I have to agree with everyone else, you have something wrong with your setup, or doing something seriously wrong.

I don't agree with lowering the tire pressure. I've seen 1.4x 60ft's out of mine at 20-22psi. IMO, they got worst with less air.

I have to agree with everyone else, you have something wrong with your setup, or doing something seriously wrong.

I don't agree with lowering the tire pressure. I've seen 1.4x 60ft's out of mine at 20-22psi. IMO, they got worst with less air.

I'll have to bump my psi up next time i go because last October i cut a 1.47 60ft. with 15psi in them. Alot depends on the track prep from what i see .

I'll have to bump my psi up next time i go because last October i cut a 1.47 60ft. with 15psi in them. Alot depends on the track prep from what i see .


If you cut that 60' with 15 PSI, don't expect to do a lot better at the 60' with 20-22 PSI in the tires. However, if you can still hook and 60' the same, expect your incrementals to be better at every point because of the lesser rolling resistance afforded by the higher PSI. It won't be much but it may be .02-.03 by the 1320' and maybe .2-.3 MPH as well. What size tire and could you possibly give us some details on your setup? Thanks.

On the burnout subject, my MT's seem to like some heat in them. 275/50-15's BTW. A small burnout w/o much tire smoke and I get a little bit of spin for the first few feet and 1.62-1.63 60' times. A longer burnout and smoke kinda like in that vid in the link earlier and my 60's drop into the high 1.5 range with no wheelspin whatsoever. Also as was mentioned earlier I swear trap prep has something to do with it. Then again, my car is an A4 so none of this may have any bearing on the original poster's dilema. :(
I believe with an M6 some Hoosier QTP's will be easier for you to get the results your looking for as compared to the MT radial. The sidewall flex of the QTP's are just so much more forgiving of the drivetrain shock with the M6 at launch. Good luck at the track.

What rear gear and diff are you running? ie: 10 bolt and 3.42s or 12 bolt and 4.10?

:cheers:

If you cut that 60' with 15 PSI, don't expect to do a lot better at the 60' with 20-22 PSI in the tires. However, if you can still hook and 60' the same, expect your incrementals to be better at every point because of the lesser rolling resistance afforded by the higher PSI. It won't be much but it may be .02-.03 by the 1320' and maybe .2-.3 MPH as well. What size tire and could you possibly give us some details on your setup? Thanks.

On the burnout subject, my MT's seem to like some heat in them. 275/50-15's BTW. A small burnout w/o much tire smoke and I get a little bit of spin for the first few feet and 1.62-1.63 60' times. A longer burnout and smoke kinda like in that vid in the link earlier and my 60's drop into the high 1.5 range with no wheelspin whatsoever. Also as was mentioned earlier I swear trap prep has something to do with it. Then again, my car is an A4 so none of this may have any bearing on the original poster's dilema. :(
I believe with an M6 some Hoosier QTP's will be easier for you to get the results your looking for as compared to the MT radial. The sidewall flex of the QTP's are just so much more forgiving of the drivetrain shock with the M6 at launch. Good luck at the track.

Your not telling me something new. If you can hook the same with 20psi vs. 15psi you will always run a faster mph and quicker ET.

Thanks for finding me the video, I did a simialar burnout but yours started smoking very fast :eek2: .

I dont know whats the problem, I used nitto on my old m6 car and i cut 1.5 on them ....ummm looks like I need another visit to the track soon :eyes:

NP. We wasted a couple sets figuring this out. We found out by accident. I had 30psi in my tires cause I drive them on the street and we forgot to let air out. I made a pass and cut a good 60ft. Greg remembered about the psi and let air out well I spun with a heavy burnout. So he added more did better added more did better and so on. At 22 psi she hooked and we have kept her there since. The burnout we kept trying different stuff thats when we realized the MT DRs didn't like big burnouts. You just need to play till you find what your setup likes thats really all we did. Don't give up so easy. I ran Nittos first when I went to the MTs I have not yet used another tire.

Well surely there is something wrong. anyways , yes a 10 bolt witha stock 3.42 gear ratio, I`ve tried all methods that day to get the car hook up. I have done soo many passes before with stick and auto cars and did 1.4 and 1.5 60` .

before about a month, i used to have a 2 inch lowering springs and decided to go back to stock ride height by puting back the stock springs and adjusting the pinion angle and did an alignment too.

not a great comparison, but our 05 mustang with MT's and 4.10 gears cuts consistant mid 1.8x's dumping the clutch it at 5k. we put about 20psi in them and do a small burnout.

In a 363 rwhp Z06/M12/3.42/stock LS6 clutch, after 50 passes on stock tires and 250 on BFG 315.35.17 DR, I made 50 passes on MT Street Radials 275.40.17. The gave very consistent 60' once I figured out the burnout protocol.

I'd suggest that is your issue too...the burnout protocol.

With the MT Radials, this is what works:
(1) first pass of the day a good smoky burnout.
(2) all subsequent passes that day, spin the tires to just first whiffs of smoke and then back out of the throttle. Adjust the driver-side mirror to monitor the left tire smoke. MT technical calls this protocol "just hazing the tires."

If (2), instead is a another full smoky burnout, you bring oils to the tire surface that costs you .15-.20 on the 60' and some additional on the 1-2, 2-3.

The is a magic trick about the MT Radial; I have personally watched at least five C5Z06 owners set PR 60' the first day at the track after learning this trick.

FWIW, after a lot of experimentation, I found 20-22 psi hot produced the best 60', 330' and ET and trap for me. With my set-up (first para) I need 600-1000 more of a launch rpm than on the BFGs to permit a touch of wheel-spin on the launch. Any less and the MT Radials would bog. That is the benefit of a proper burnout protocol.

If it weren't for TM and the finicky LS7 clutch, I'd be doing those strong MT Radial launches on my C6Z and running some much faster times. Oh well.

Ranger

In a 363 rwhp Z06/M12/3.42/stock LS6 clutch, after 50 passes on stock tires and 250 on BFG 315.35.17 DR, I made 50 passes on MT Street Radials 275.40.17. The gave very consistent 60' once I figured out the burnout protocol.

I'd suggest that is your issue too...the burnout protocol.

With the MT Radials, this is what works:
(1) first pass of the day a good smoky burnout.
(2) all subsequent passes that day, spin the tires to just first whiffs of smoke and then back out of the throttle. Adjust the driver-side mirror to monitor the left tire smoke. MT technical calls this protocol "just hazing the tires."

If (2), instead is a another full smoky burnout, you bring oils to the tire surface that costs you .15-.20 on the 60' and some additional on the 1-2, 2-3.

The is a magic trick about the MT Radial; I have personally watched at least five C5Z06 owners set PR 60' the first day at the track after learning this trick.

FWIW, after a lot of experimentation, I found 20-22 psi hot produced the best 60', 330' and ET and trap for me. With my set-up (first para) I need 600-1000 more of a launch rpm than on the BFGs to permit a touch of wheel-spin on the launch. Any less and the MT Radials would bog. That is the benefit of a proper burnout protocol.

If it weren't for TM and the finicky LS7 clutch, I'd be doing those strong MT Radial launches on my C6Z and running some much faster times. Oh well.

Ranger


Thanks Ranger, actually Thats the way I did it, I`ve done all what u mention( not saying u r repeating things), Iv`e used and tried this protocol, the fact that this what I exactly did all day except that for every run I decrease the air pressure.

Looks like another visit to the track is needed very soon :)

any other opinions out there?

Thanks Ranger, actually Thats the way I did it, I`ve done all what u mention( not saying u r repeating things), Iv`e used and tried this protocol, the fact that this what I exactly did all day except that for every run I decrease the air pressure.

any other opinions out there?

Here you said you did a "reasonably smokey burnout."

well the way i did it is setting the tire pressure at 15 psi( thats for the best run) and did a reasonable smokey burnout , steped on the line and holded the clutch at 2600 rpm and slipped it .( I tried dumping , but 60` was worser).


Not trying to split hairs...but the 2d pass on the protocol is just the briefest whiff of smoke; if you're producing reasonable smokey burnout after the first passes, it's too much.

The procedure for ET Radials is different from ET bias-ply.

What is your procedure for use of water on the tires?

Another alternative is that you are hammering the throttle rather than making a progressive squeeze.

Ranger

Is the car spinning or bogging?, I cant hardly see the car spinning that bad, even on a marginal track.



David

Here you said you did a "reasonably smokey burnout."



Not trying to split hairs...but the 2d pass on the protocol is just the briefest whiff of smoke; if you're producing reasonable smokey burnout after the first passes, it's too much.

The procedure for ET Radials is different from ET bias-ply.

What is your procedure for use of water on the tires?

Another alternative is that you are hammering the throttle rather than making a progressive squeeze.

Ranger


Ok .. let me get this straight, First of all at 7 PM I went to the line, didnt get water in front tires, and went back to the water(for rear tires) to get them little wet then passed the water and did a solid burnout with a very good smoke , pressure at first run was about 22 psi, stepped on the line & hold it at 2600 RPM and slipped it , and here is a 12.7 with 2.1 60`.

I did after that 5 more passes and with every pass I lower the air pressure 2 or 3 psi and ended up at 8:45 with a 2.ish 60` range and with a small burnout just to see the smoke.

at about 9:30pm decided to do another smokey reasonable burn out( not like the first one) and dumpped the clutch but didnt work.

at 10:30pm went back to the usual process with other for passes till I got a 12.5 with 2.006 best .

Is the car spinning or bogging?, I cant hardly see the car spinning that bad, even on a marginal track.



David

ya it does spin, but it kinds of fall at its face when going second gear.

i love the MT on my M6 14psi nice buronout and 1.72 stock suspension and clutch.

ya it does spin, but it kinds of fall at its face when going second gear.

you have your answer. if you spin you loaded the rear tire. when you went into second and it bogs that means the suspension unloaded on you.

its in the suspension.

you have your answer. if you spin you loaded the rear tire. when you went into second and it bogs that means the suspension unloaded on you.

its in the suspension.

any advise John?

Maybe I missed the set up but give me some shock settings. These tire work it just takes some tuning.

Maybe I missed the set up but give me some shock settings. These tire work it just takes some tuning.


Never mind I found it. Its the suspension. Those tire will net you killer 60ft if you get some good suspension parts. Alot is in the shocks.

12.5 with a 2.0 60ft.

hum what am i doing wrong?

j/w what was your wheather like?

madman is the authority on setting up an fbody car. very cool of him to come in and help.

madman i will hit ya up when i am ready to push these 325 radials of mine.

Never mind I found it. Its the suspension. Those tire will net you killer 60ft if you get some good suspension parts. Alot is in the shocks.

Thanks for commin in Madman, what shall I start with? what is the most affective suspension part? or do all the part function beter together? any budjet setup laying around in your mind? so i can pay another visit and get ready to start on the line again?

Thanks.

12.5 with a 2.0 60ft.

hum what am i doing wrong?

j/w what was your wheather like?
I have no Idea but i have ran at rockingham dragway ,NC

I would start with a set of QA1s first. Is the car stock height or os is lowered?? What angle are your control arms in rear??( are they running up hill from the rear end to the body)

I would start with a set of QA1s first. Is the car stock height or os is lowered?? What angle are your control arms in rear??( are they running up hill from the rear end to the body)

it has a stock height, as for the angle, I am not sure . A shop adjusted my pinion angle. and I have an adjustable control arm to.

as for shocks , do i need a set of 4? for front and rear? shall I go with the spring shock package? what spring rate is recommanded?

Thanks.

I would get all 4. For you application I would get 325s for the front spring.

listen to mad man
im pullin the wheels with 255/50/16s on my m6 ws6 with his advise
i just have to do some more little tweeks to get everything perfect

I would get all 4. For you application I would get 325s for the front spring.

adjustable or double adjustable? and 275lb for the rear springs, correct?

listen to mad man
im pullin the wheels with 255/50/16s on my m6 ws6 with his advise
i just have to do some more little tweeks to get everything perfect

I will take ur advise for sure.

Thanks.

Get the single adjustables. If you want doubles DO NOT go with QA1. Either AFCO or Strange. The stock rear springs will work in the rear.

well the way i did it is setting the tire pressure at 15 psi( thats for the best run) and did a reasonable smokey burnout , steped on the line and holded the clutch at 2600 rpm and slipped it .( I tried dumping , but 60` was worser) .

stock springs and shocks too.
I come from the school that says solve/verify (launch) technique issues before spending money on parts.

If other drivers with similar set-ups are able to get 1.7x-1.8x from MT Radials, why can't prostock_bigblock?

Is the hypothesis that the his rear shocks are worn out? Other drivers on stock shocks seem to run faster 60'. Is it the shocks? Or is it a technique issue?

prostock_bigblock did not answer the question is his car bogging or spinning. On a Corvette, to make properly heated MT Radials to spin took 2000 higher launch rpm than on stock tires; for me that meant 4600-5200. It is very difficult to imagine that prostock_bigblock is not seriously bogging his engine on a launch of just 2600.

Ranger

Heres a video I made. You can see the tires work great. Get that suspension done. It was one of the best things I did to my car.
Oh BTW, I am a big fan of the BMR extreme sway bar and QA1's. You will be able to see the car used to twist bad. After we did all the suspension stuff she went up straight in the air the first night out. Thats the last shot in the video..

http://www.ls1tech.com/forums/showthread.php?p=5498916#post5498916