Best PSI for M&H Drag Radials

[FATJACK]

I need some help, I just put on a set of M&H Drag Radials and have been told the best pressure to use is 15psi. I have ran them as low as 17psi cold and the things look like they are about flat. My best 60' so far is 1.78 but I am having a hard time getting any more that low, most are in the 1.85 range. These tires are not wrinkle wall slicks and I really do not want to run a lower pressure. One guy at the track suggested 12psi. What do you guys think??

 

[Dom426]

you can cut a good time are you gettin wheel spin what rpm are you leavin at

 

[FATJACK]

Tried different RPM's but 3500 and then mat it seemed like the best so far, any suggestions??

 

[Dom426]

do u have qa1s

 

[FATJACK]

No, I have the X-Metal lowered shocks, wheel hop has not been a problem, yet...

 

[Dom426]

are you just dumpin the clutch or slippin it out a lil bit

 

[FATJACK]

Dumping, slipping eats our clutches.

 

[JTS VENOM PERFORMANCE]

48 psi with a x lowering kit, 13-15psi with mine

 

[FATJACK]

Whatever you say Stink, 48 psi it is. Should I leave aound 5000 ???:rock: :rock:

 

[Dom426]

Whatever you say Stink, 48 psi it is. Should I leave aound 5000 ???:rock: :rock:

i would leave on the rev limiter

 

[FATJACK]

i would leave on the rev limiter

Dom, do you think 13 to 15 psi Cold would be okay???

 

[FATJACK]

Now dammit Steve, I've seen you race, I ain't listening to you

 

[Trainman]

John at M&H was watching my sidewalls when I had 15 lbs of air and he said I got too much distortion and he recommended 17 PSI which is where I keep them. My best ever was 1.825 at Famoso Drag Strip. Our starting line is not the best. I can't leave at anything above 2900-3000 rpm. By the way what was your ET with the 1.78 60' time?

 

[JMB Justin]

15 psi is pretty low IMO, I would stay in the 17-20 psi range on the radials.
Justin

 

[eddie102870]

17-19 is where i keep mine, 17 looks real low on a qc

 

[eddie102870]

But I beat Clint twice!!! :marchmellow: :marchmellow: :marchmellow: :congrats: :congrats: :congrats: :congrats: :congrats:

everybody beat Clint

 

[rottenronnie]

20 P.S.I. = 1.86 60' with my Q.C. (high altitude track).

 

[FATJACK]

John at M&H was watching my sidewalls when I had 15 lbs of air and he said I got too much distortion and he recommended 17 PSI which is where I keep them. My best ever was 1.825 at Famoso Drag Strip. Our starting line is not the best. I can't leave at anything above 2900-3000 rpm. By the way what was your ET with the 1.78 60' time?

Our local track is 1/8 th mile, the ET on that pass was 8.14. With my new clutch I believe it has a 7.90 in it...:rock:

 

[TNVIPER]

Our local track is 1/8 th mile, the ET on that pass was 8.14. With my new clutch I believe it has a 7.90 in it...:rock:

You need to re-match that Lightning once you find your spot..

 

[FATJACK]

Yeah, no kidding, he is in for an ass kickin!!