14x32 MT air pressure
#1255818
06/23/12 12:56 AM
06/23/12 12:56 AM
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Joined: May 2007
Posts: 69 Franklin Furnace, OH
moparman1954
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OP
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Joined: May 2007
Posts: 69
Franklin Furnace, OH
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Wondering what air pressure to start out at, new combo. 68 cuda, ladder bars, coil overs, glass hood, bumpers, lexan windows. 446 unported indy sr's, indy single plane, 950 proform carb, 607,610 comp solid cam, 12.5 wiseco pistons, 2" hooker fenderwells. 727 griner brake, 4500 lupo converter, delay box. 8 3/4, 5.13 gear, 14x32 MTs. 1/8 mile only
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Re: 14x32 MT air pressure
[Re: MR_P_BODY]
#1255821
06/23/12 01:43 AM
06/23/12 01:43 AM
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Joined: Dec 2006
Posts: 4,647 aotearoa
rebel
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master
Joined: Dec 2006
Posts: 4,647
aotearoa
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@2950lbs with me on board i run my 32x14S M/T's @ 8 psi. 1.32 60's 9.4@142mph 1/4's.
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Re: 14x32 MT air pressure
[Re: moparman1954]
#1255822
06/23/12 02:00 AM
06/23/12 02:00 AM
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Joined: Aug 2003
Posts: 43,157 Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,157
Bend,OR USA
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Quote:
Wondering what air pressure to start out at, new combo. 68 cuda, ladder bars, coil overs, glass hood, bumpers, lexan windows. 446 unported indy sr's, indy single plane, 950 proform carb, 607,610 comp solid cam, 12.5 wiseco pistons, 2" hooker fenderwells. 727 griner brake, 4500 lupo converter, delay box. 8 3/4, 5.13 gear, 14x32 MTs. 1/8 mile only
Tubes or tubeless? If tubeless I would probally start high, say nine lbs and see what the car does, feel the tires after the first pass to see if there rough all the way across or just in the middle If rough all the way across, it may take two or three passes to get it where you can feel it good with your fingertips lightly sliding across the tire The other thing is go by the time slip, pump it up until it spins and then go down in pressure until it slows down on the 60 ft. times, best 60 ft is the best air pressure
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: 14x32 MT air pressure
[Re: Cab_Burge]
#1255823
06/23/12 07:54 AM
06/23/12 07:54 AM
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Joined: Dec 2009
Posts: 20,640 in a cattle trailer down by th...
Guitar Jones
Paddle faster! I hear banjo music!
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Paddle faster! I hear banjo music!
Joined: Dec 2009
Posts: 20,640
in a cattle trailer down by th...
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I run 7.5 - 8.5 in mine depending on track conditions.
"Follow me the wise man said, but he walked behind"
'92 D250 Club Cab CTD, 47RH conversion, pump tweaks, injectors, rear disc and hydroboost conversion. '74 W200 Crew Cab 360, NV4500, D44, D60 and NP205 divorced transfer case. Rear disc and hydroboost coming soon! 2019 1500 Long Horn Crew Cab 4WD, 5.7 Hemi.
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Re: 14x32 MT air pressure
[Re: Guitar Jones]
#1255824
06/23/12 09:53 AM
06/23/12 09:53 AM
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Joined: Feb 2005
Posts: 2,528 Mansfield, Tx
Jacob Pitt
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Mansfield, Tx
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I run the 14.5/32 soft sidewall and don't run tubes. With a 3200lbs 9.40-50 car I run anywhere from 11-12 pounds depending on the track. M/T tires don't like to wrinkle excessively and like more air pressure. The more air pressure you can run the more stable to car will be on the top end.
2013 NHRA D4 Stock Champ #4 in the World IHRA Stock 2x IHRA Div.4 Stock Champ 14x Track Champ All using a Ultimate Converter Concepts converter. Call Lenny today 704-892-6837
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Re: 14x32 MT air pressure
[Re: Jacob Pitt]
#1255825
06/23/12 10:06 AM
06/23/12 10:06 AM
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Joined: Nov 2009
Posts: 2,177 ill
dennismopar73
top fuel
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top fuel
Joined: Nov 2009
Posts: 2,177
ill
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Quote:
I run the 14.5/32 soft sidewall and don't run tubes. With a 3200lbs 9.40-50 car I run anywhere from 11-12 pounds depending on the track. M/T tires don't like to wrinkle excessively and like more air pressure. The more air pressure you can run the more stable to car will be on the top end.
also not enough air will kill 60ft. and reaction times! I could never run 7-9 #, car to unstable at the start, and wonder all over the place on the top end, we run 12.5 in the coronet with hoosiers tubless, but we did have MT and ran the same pressure!
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Re: 14x32 MT air pressure
[Re: 440Jim]
#1255827
06/23/12 10:50 AM
06/23/12 10:50 AM
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Joined: Jan 2003
Posts: 4,616 Kissimmee Fl.
dusturbd340W5
master
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master
Joined: Jan 2003
Posts: 4,616
Kissimmee Fl.
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my ladder bar car didn't like any thing less than 12# in M/T 14x32.
70 duster full chassis super pro 416 CNC Indybrock heads 727 w/brake
best so far 1.212 60 6.219 in 1/8 at 110.88 9.768 at 137.81 1/4
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Re: 14x32 MT air pressure
[Re: dusturbd340W5]
#1255828
06/23/12 10:56 AM
06/23/12 10:56 AM
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Joined: Mar 2003
Posts: 2,497 PA
moparacer
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PA
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I ran 10-11 in the stiff wall 32X14...
67 Barracuda street/bracket car 11.27-119 68 Dart 502 BB 8.70s-152 414 cid SB Dragster 7.65-174
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Re: 14x32 MT air pressure
[Re: moparman1954]
#1255832
06/23/12 06:28 PM
06/23/12 06:28 PM
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Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
Master
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Romeo MI
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Quote:
Have no idea, never been scaled. The slicks have tubes and are screwed.
Without knowing the weight you can start out with the suggestions the guys have given and play with it from there... M/T tires do like a bit more air but being that your running tubes it will be a bit less but its still going to be a test and see
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Re: 14x32 MT air pressure
[Re: rebel]
#1255835
06/23/12 07:48 PM
06/23/12 07:48 PM
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Joined: Nov 2009
Posts: 2,177 ill
dennismopar73
top fuel
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top fuel
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Quote:
interesting some of the claims of running 10 psi n higher. my very first set of MT 32x14's i ran at 10 psi, i found that although i still had depth dots on the sides of the slick, i was starting to see the fabric in the middle of the slick. basicly they were over inflated & wearing out at 10 psi. once i started running a lower pressure i could see more even wear across the surface. i'm running the stiff sidewall as thats the only type my local MT agent brings in to our country so it might be different to the soft sidewall. even so at 8 or sometimes 7.5 psi, my car is very stable @ the top end.
Rim size,is most likely the issue, to big of burn outs! jmo, I have a 14" but wish I had a 15" with my 14 32 w
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Re: 14x32 MT air pressure
[Re: dennismopar73]
#1255836
06/23/12 09:31 PM
06/23/12 09:31 PM
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Joined: Dec 2006
Posts: 4,647 aotearoa
rebel
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master
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aotearoa
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Quote:
Quote:
interesting some of the claims of running 10 psi n higher. my very first set of MT 32x14's i ran at 10 psi, i found that although i still had depth dots on the sides of the slick, i was starting to see the fabric in the middle of the slick. basicly they were over inflated & wearing out at 10 psi. once i started running a lower pressure i could see more even wear across the surface. i'm running the stiff sidewall as thats the only type my local MT agent brings in to our country so it might be different to the soft sidewall. even so at 8 or sometimes 7.5 psi, my car is very stable @ the top end.
Rim size,is most likely the issue, to big of burn outs! jmo, I have a 14" but wish I had a 15" with my 14 32 w
true that. 15" rims here & tend to be somewhat conservative on the burnout,
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