Tested tires, too big

88workcar · 10-19-2003, 07:39 PM

Well fri night I got to go to the track. The newest problem is now the ol tremac is hard to shift. Second is gone.
1st pass 14.03 @ 108, missed sec
2nd pass 13.18 @ 110, missed sec
3rd pass 11.69 @ 116.55, on juice, granny shifting
4th pass 12.28 @ 115.82, nos, missed 4th, granny shifting
5th pass 12.63 @ 105.98, forgot what happened
6th pass 11.92 @ 114.30, nos, missed 2nd again

Anyway, the motor passes are slower than when I went on radials, and this time I was on 28 X 10 ET Streets. I will go back to 26" tires and get rid of the rev limiter. But the 11.6 was enogh to make it a good night.

Fox Body · 10-19-2003, 07:54 PM

Sucks about 2nd....

Well, I can't really guage (or is it au?) if those runs were good or bad cause I don't know what you SHOULD be running. So, what times do you expect to run in that car with good tires, on the bottle, and good shifting on a good day? Mid 11s?

BTW, how in the world do you miss 4rth?

88workcar · 10-20-2003, 06:39 AM

Well sec and fourth, how can one miss? Yes I feel that mid to low 11s are possiable. My best 60ft was just 1.59, were with the 26" tires I can 1.54. And all the rest of the slip shows suffering all the way down.

andy669 · 10-20-2003, 07:47 AM

Most of the time when I miss gears its because I forget to adjust the stops on the shifter. I pull my pro-shifted box apart quite often and the stops always need adjusted. About the only thing I break consistently is the roll pin that holds the 1-2 fork on to the shift rod. Its really a simple fix. You should pull the covers off and tell us what you find.

Andy

92ufogt · 10-20-2003, 11:28 AM

andy669, what transmission do you run. TREMEC? couirous because i thought that the tremecs have internal stops for the shifters. i am a little stupid when it comes to these trannys. i have a tko and adjusted the stops for the shifter all the way out. plus just bought a set of 275/60/15 nittos and think they are too big. should i go with the 275/50?

andy669 · 10-20-2003, 12:18 PM

Mines a TKO. I have never been to a class or taught the right way to work on these trannys so Im certainly not an expert.

I'm not aware of anything in the trans that could be considered a stop like the shifters have. I'm sure when the shift rods get to a certain point they wont move any further, but that may be after the fork bends or you've over extended the slider. If youre doing alot of powershifting I would recommend setting the stops on the shifter just as the instructions say. Then check it periodically cause as the shift pads wear down you will need a little more travel to get the same slider engagement. If youre not powershifting, dont worry about it.

My problem was, the shifter was hitting the stop before the 3-4 slider was engaging fully in to third. It would go in fine driving around the pits, but on the track it would grind every time.

Another problem I had was hitting fourth. After realizing that the back of my elbow was sore and bruised I figured out it was hittting the armrest when pulling fourth. Since I have taken it out I havnent missed fourth once. My elbow feels a whole lot better too.

Andy

88workcar · 10-23-2003, 06:27 AM

I went run the 26" last night.
11.882 @ 111.59, 1.57 60 ft, nos
12.28 @ 109, 1.59 60ft, motor

But this was lifting to shift, the tranny is gone.

10-19-2003, 07:39 PM	#1
88workcar Registered Member Join Date: Oct 1999 Location: Pierre Part, La. U.S.A. Posts: 1,850	Tested tires, too big Well fri night I got to go to the track. The newest problem is now the ol tremac is hard to shift. Second is gone. 1st pass 14.03 @ 108, missed sec 2nd pass 13.18 @ 110, missed sec 3rd pass 11.69 @ 116.55, on juice, granny shifting 4th pass 12.28 @ 115.82, nos, missed 4th, granny shifting 5th pass 12.63 @ 105.98, forgot what happened 6th pass 11.92 @ 114.30, nos, missed 2nd again Anyway, the motor passes are slower than when I went on radials, and this time I was on 28 X 10 ET Streets. I will go back to 26" tires and get rid of the rev limiter. But the 11.6 was enogh to make it a good night. __________________ 88workcar 1988 Mustang LX 342. 417rwhp @ 6800. 28 X 10 ET Drag, 4.30s, 10.69 @ 126.43 1.42 60ft. 11.13 @ 127.7 on BFGs 1.72 60ft Rice Hater # 42 To be old and wise, You must first be young and stupid I'm somewhere in tthe middle.

10-19-2003, 07:54 PM	#2
Fox Body Mustang Maniac Join Date: Sep 2000 Location: GA, U.S.A Posts: 2,266	Sucks about 2nd.... Well, I can't really guage (or is it au?) if those runs were good or bad cause I don't know what you SHOULD be running. So, what times do you expect to run in that car with good tires, on the bottle, and good shifting on a good day? Mid 11s? BTW, how in the world do you miss 4rth? __________________ 351W-powered 1979 Ford Mustang Ghia notchback '79 Video @ Idle Stock 5.8L under 4" cowl 'glass hood, C4 w/ Transgo shift kit, Holley 750 cfm, Edelbrock Performer RPM intake; Fluidyne Al radiator, Flexalite 175 electric fan, 1 5/8" MAC shorty headers, FRPP Al driveshaft; S&W 6-point cage; 2.5" Off road H-pipe, 2-chamber Flowmasters, 8.8" Rear w/ 3.55s; Weld wheels (15x6;15x8), Front: 225/60/15, Rear: 275/50/15 Nitto NT 555R Drag Radials; 14 x 4” K&N X-stream air filter. '92 GT (5-speed) Small In Car Video Stock 5.0L, 2-chamber Flowmasters, MAC CAI, Tri-Ax, Al pedals... "Red, thou art my companion. Hasten now your quickened metamorphosis to Green that I may conquer all who dare abide there beside me. May they be left thither behind burnt black." ---Fox Body

10-20-2003, 06:39 AM	#3
88workcar Registered Member Join Date: Oct 1999 Location: Pierre Part, La. U.S.A. Posts: 1,850	Well sec and fourth, how can one miss? Yes I feel that mid to low 11s are possiable. My best 60ft was just 1.59, were with the 26" tires I can 1.54. And all the rest of the slip shows suffering all the way down. __________________ 88workcar 1988 Mustang LX 342. 417rwhp @ 6800. 28 X 10 ET Drag, 4.30s, 10.69 @ 126.43 1.42 60ft. 11.13 @ 127.7 on BFGs 1.72 60ft Rice Hater # 42 To be old and wise, You must first be young and stupid I'm somewhere in tthe middle.

10-20-2003, 07:47 AM	#4
andy669 Registered Member Join Date: Jan 2001 Location: Moline Il Posts: 901	Most of the time when I miss gears its because I forget to adjust the stops on the shifter. I pull my pro-shifted box apart quite often and the stops always need adjusted. About the only thing I break consistently is the roll pin that holds the 1-2 fork on to the shift rod. Its really a simple fix. You should pull the covers off and tell us what you find. Andy __________________ 88 coupe 91 LX NMRA Pure Street 5120

10-20-2003, 11:28 AM	#5
92ufogt Registered Member Join Date: May 2003 Location: Ohio Posts: 19	andy669, what transmission do you run. TREMEC? couirous because i thought that the tremecs have internal stops for the shifters. i am a little stupid when it comes to these trannys. i have a tko and adjusted the stops for the shifter all the way out. plus just bought a set of 275/60/15 nittos and think they are too big. should i go with the 275/50? __________________ 02 GT Stock 92 GT Carbed 351

10-20-2003, 12:18 PM	#6
andy669 Registered Member Join Date: Jan 2001 Location: Moline Il Posts: 901	Mines a TKO. I have never been to a class or taught the right way to work on these trannys so Im certainly not an expert. I'm not aware of anything in the trans that could be considered a stop like the shifters have. I'm sure when the shift rods get to a certain point they wont move any further, but that may be after the fork bends or you've over extended the slider. If youre doing alot of powershifting I would recommend setting the stops on the shifter just as the instructions say. Then check it periodically cause as the shift pads wear down you will need a little more travel to get the same slider engagement. If youre not powershifting, dont worry about it. My problem was, the shifter was hitting the stop before the 3-4 slider was engaging fully in to third. It would go in fine driving around the pits, but on the track it would grind every time. Another problem I had was hitting fourth. After realizing that the back of my elbow was sore and bruised I figured out it was hittting the armrest when pulling fourth. Since I have taken it out I havnent missed fourth once. My elbow feels a whole lot better too. Andy __________________ 88 coupe 91 LX NMRA Pure Street 5120

10-23-2003, 06:27 AM	#7
88workcar Registered Member Join Date: Oct 1999 Location: Pierre Part, La. U.S.A. Posts: 1,850	I went run the 26" last night. 11.882 @ 111.59, 1.57 60 ft, nos 12.28 @ 109, 1.59 60ft, motor But this was lifting to shift, the tranny is gone. __________________ 88workcar 1988 Mustang LX 342. 417rwhp @ 6800. 28 X 10 ET Drag, 4.30s, 10.69 @ 126.43 1.42 60ft. 11.13 @ 127.7 on BFGs 1.72 60ft Rice Hater # 42 To be old and wise, You must first be young and stupid I'm somewhere in tthe middle.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
tires i can fit to 15 x 10 welds ?	5000cc	Windsor Power	3	05-08-2005 09:10 PM
Questions about tires...	Her99GT	Blue Oval Lounge	6	04-13-2005 04:01 PM
No more tires	GTJules99	Corner Carvers Delight	7	03-01-2003 05:13 PM
New Tires	Venomouscobra	Modular Madness	4	06-12-2002 07:28 PM
28" tall tires on 87-91GT's.......	Rick 91GT	Windsor Power	4	01-29-2001 12:24 PM