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LOVE MY MT DRAG RADIALS:

 
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jeep_406
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Joined: 12 Sep 2002
Posts: 1662
Location: Tewksbury, Mass 01876
53158.50 points


1972 Chevrolet Nova

PostPosted: Mon Aug 28, 2006 9:44 pm    Post subject: LOVE MY MT DRAG RADIALS: Reply with quote

Ran Mickey Thompson drag radials for the first time Sunday at the Nostalgia races at New England Dragway. What an improvement over my B F Goodrich drag radials. I made 3 passes before the rains came. My 60 foot times were:

1.663, 1.670 & 1.671

It's also the first time I ran with the 700R4 back in the car. This time I have a Precision Industries 3000 stall converter in it.
My ET's were 12.143, 12.136 & 12.224

I usually go through the eyes at 6,000 RPM but on the last pass I somehow shifted into 4th gear and it went through the eyes at just under 4,000 RPM. Embarassed Scrubbed off about 4 MPH.

The car is so consistent. I've got to concentrate on making me a better driver. Back to SMOKE's tree!
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cutlass389
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Joined: 29 Apr 2006
Posts: 268
Location: NC
8544.62 points


1978 Oldsmobile Cutlass

PostPosted: Mon Aug 28, 2006 9:53 pm    Post subject: Size matters Reply with quote

Curious as to before and after sizes (BFG&MT). Same wheels? I'm 99.4% sure i'm going to MT radials next year.
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"It may be ugly, but it's SLOW"


Last edited by cutlass389 on Mon Aug 28, 2006 11:10 pm; edited 1 time in total
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restomod
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Joined: 20 May 2006
Posts: 224
Location: Houston,Tx
6693.02 points


1969 Pontiac Firebird

PostPosted: Mon Aug 28, 2006 10:15 pm    Post subject: Reply with quote

congrats,good to see your car so consistent
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artinla
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Joined: 09 May 2006
Posts: 233

8558.30 points


1971 Chevrolet Nova

PostPosted: Tue Aug 29, 2006 1:13 am    Post subject: Reply with quote

Nice times Jeep.
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pro60chevy
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Joined: 01 Jan 2004
Posts: 406

16.00 points



PostPosted: Tue Aug 29, 2006 4:18 am    Post subject: Reply with quote

Congrats!! Sorry we missed you. We left Saturday afternoon, I guess we should have stayed another day.
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jhyjohnson
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Joined: 30 Oct 2005
Posts: 129

4780.54 points


1973 Buick Apollo

PostPosted: Tue Aug 29, 2006 5:36 pm    Post subject: Reply with quote

i agree on the tires. i have them on my car and they bite good and seem to be holding up good. was wondering what pressure your running. i've had best times at 10psi.

jhy
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jeep_406
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Joined: 12 Sep 2002
Posts: 1662
Location: Tewksbury, Mass 01876
53158.50 points


1972 Chevrolet Nova

PostPosted: Tue Aug 29, 2006 10:37 pm    Post subject: Reply with quote

I ran 17 pounds. Only made 3 passes but I plan to play around with the pressure. My thought is to run as much pressure without hurting my 60 foot times.
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GrandSportC3
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Joined: 11 Jul 2003
Posts: 1231
Location: Lakeland, FL
32443.62 points


1968 Chevrolet Corvette

PostPosted: Wed Aug 30, 2006 8:20 am    Post subject: Reply with quote

jeep_406 wrote:
I ran 17 pounds. Only made 3 passes but I plan to play around with the pressure. My thought is to run as much pressure without hurting my 60 foot times.


I always ran 17 - 18 lbs of air when I used to run Drag Radials..

I used to run BFG Drag Radials and the best 60' time that I got on them with my old 383 engine and the 5-speed TKO tranny was 1.591
I switched to ET Street wrinkle wall tires after that and never got such good 60' time again.. The best 60' time with the old setup and the wrinkle wall tires was 1.63
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jhyjohnson
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Joined: 30 Oct 2005
Posts: 129

4780.54 points


1973 Buick Apollo

PostPosted: Wed Aug 30, 2006 7:25 pm    Post subject: Reply with quote

really 17pounds. i was told to run at 10psi from shop i bought them at. i think im racing this weekend maybe i will try 17psi.
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GrandSportC3
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Joined: 11 Jul 2003
Posts: 1231
Location: Lakeland, FL
32443.62 points


1968 Chevrolet Corvette

PostPosted: Thu Aug 31, 2006 12:10 pm    Post subject: Reply with quote

jhyjohnson wrote:
really 17pounds. i was told to run at 10psi from shop i bought them at. i think im racing this weekend maybe i will try 17psi.


Never heared about anybody that was using below 15 lbs of air in Drag Radials.. Wrinkle wall (nylon ply) tires can be run with less pressure but not Drag Radials..

I personally run wrinkle wall ET Street tires 28 x 13.5 - 15 and I run between 10 - 14 lbs of air in them depending on track conditons.. I run as high pressure as I can without spinning because your trap speed is going to be higher with more tire pressure. On really bad tracks, I have to lower the pressure to 10 lbs to hook..
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jeep_406
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Joined: 12 Sep 2002
Posts: 1662
Location: Tewksbury, Mass 01876
53158.50 points


1972 Chevrolet Nova

PostPosted: Thu Aug 31, 2006 7:19 pm    Post subject: Reply with quote

Mickey Thompson has ET Street and ET Drag air pressure guidlines
www.mickeythompsontires.com/tech.php?bulletin=s3
In the ET STREET RADIAL section for racing, they recommend 11-14 psi for tires P295 and larger. 12-16 psi for tires P275 and smaller.

Driving on the highway they recommend running 75% of maximum psi stated on the sidewall of the tire. My tires state 44 on the sidewall. I've been running 30 pounds on the street, should be 33 pounds and it looks like I should try 16 pounds at the track. I've always thought I should run the most I can without affecting my 60 foot time.

Hope this helps.
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GrandSportC3
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Joined: 11 Jul 2003
Posts: 1231
Location: Lakeland, FL
32443.62 points


1968 Chevrolet Corvette

PostPosted: Thu Aug 31, 2006 7:29 pm    Post subject: Reply with quote

jeep_406 wrote:
Mickey Thompson has ET Street and ET Drag air pressure guidlines
www.mickeythompsontires.com/tech.php?bulletin=s3
In the ET STREET RADIAL section for racing, they recommend 11-14 psi for tires P295 and larger. 12-16 psi for tires P275 and smaller.

Driving on the highway they recommend running 75% of maximum psi stated on the sidewall of the tire. My tires state 44 on the sidewall. I've been running 30 pounds on the street, should be 33 pounds and it looks like I should try 16 pounds at the track. I've always thought I should run the most I can without affecting my 60 foot time.

Hope this helps.

Interesting.. I've never seen anybody run that low tire pressure in Drag Radials...
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jeep_406
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Joined: 12 Sep 2002
Posts: 1662
Location: Tewksbury, Mass 01876
53158.50 points


1972 Chevrolet Nova

PostPosted: Thu Aug 31, 2006 9:11 pm    Post subject: Reply with quote

I wouldn't have believed it if I didn't get it from the MT Tech Bulletin.
Most guys I know run 15 pounds.
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GrandSportC3
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Joined: 11 Jul 2003
Posts: 1231
Location: Lakeland, FL
32443.62 points


1968 Chevrolet Corvette

PostPosted: Fri Sep 01, 2006 7:02 am    Post subject: Reply with quote

jeep_406 wrote:
I wouldn't have believed it if I didn't get it from the MT Tech Bulletin.
Most guys I know run 15 pounds.


One of those days I'll have to get myself a set of Drag Radials to see if they make a difference..
I will have to go with taller tires anyways as soon as I run nitrous. Right now, I'm trapping at 6600 - 6700 RPM which is about 124 - 125 mph. In winter, I'm going to be trapping close to 7000 RPM just on the engine (about 130 mph). If I'll add nitrous, I should gain close to 10 mph, so I should be trapping around 140 mph which would require me to put 30 inch tall tires on my car to trap at or below 7000 RPM. I'll check if they make the Drag Radials that tall? I was originally thinking about getting 10.5W slicks but I've seen a lot of people lately that had better ET's with the DR's...
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96capriceMGR
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Joined: 23 Aug 2003
Posts: 814
Location: New London Wisconsin
20327.88 points


1996 Chevrolet Caprice

PostPosted: Fri Sep 01, 2006 6:14 pm    Post subject: Reply with quote

When looking for a DOT slick I settled on 27x11.50 Hoosier QTPs I like these A LOT better than the 28x10.50 ET Drags they replaced. I was just looking for a DOT tire that hooked and found a tire that at least for my car hooked at least as well and drives MUCH better at the bigend. I do not run them on the street atall. I usually run 15-20psi depending on the track, my car is heavy though and hooks well compared to most others.
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