grinding into 2nd only when shifting fast

Ethan79 · September 11th, 2009, 07:56 PM

hey this is my first post but i need some help.. i have a 1998 GT 5spd. the tranny is the t5 i belive. when i shift from 1st to second quickly it grinds real bad, but only when i shift fast. my guess was the synchronizers...any ideas? thanks

FluffyTheRhino · September 11th, 2009, 08:03 PM

Perhaps you aren't giving yourself enough time to shift before disengaging.

Ethan79 · September 11th, 2009, 08:09 PM

i went down the street, got up to speed then engaged the clutch and quickly went from 1st to 2nd several times back and forth, still grinds with clutch pedal fully pressed in.

Doc8224 · September 11th, 2009, 09:46 PM

synchros

AMmuslGT · September 11th, 2009, 10:02 PM

its unicorns jumping and poking holes in your exhaust and shitting in your filters

dragrace4fun · September 28th, 2009, 12:23 AM

Originally Posted by Doc8224

synchros

+1 to that...most likely cause that I've seen.

v8muscle · September 28th, 2009, 01:29 AM

my 1990 does the exact same thing let me know if it was your synchros.

ReverendDexter · September 28th, 2009, 01:35 AM

It's a T45, and mine does it, too. It did it before a rebuild, it still does it after a rebuild.

I chalk it up to "they just do that". Maybe I'm being too complacent, though.

You do have an aftermarket shifter, though, right? If not, you need one.

cliffyk · September 29th, 2009, 09:40 PM

I just posted this today on another board, in response to a questions as to what transmissions were recently used---thought it might be of interest here:

From the Red Book:

Fitment:

'94 to '95 used the Borg-Warner produced T-5;
'96 to '98 used the Borg-Warner produced T-45
'99 to '01-1/2 used the Tremec produced T-45;
'01-1/2 to '04 used the Tremec 3650;

Input Torque Ratings:

the BW T-5 is rated for 300 lbft (I have seen 310 in some sources);
the BW T-45 is rated for 320 lbft;
the Tremec T-45 is rated for 325 lbft;
the Tremec 3650 is rated for 360 lbft;

Ouput torque ratings would be the input torque limit times the selected gear ratio.

The OEM T-56 used in the Cobras is rated for 450 lbft input torque.

Cobra GT · October 7th, 2009, 04:10 AM

synchros

rider4life350 · October 13th, 2009, 10:50 PM

mine does that to but not too bad yet, let me know if you find out its the synchros.

zigbigadoru · October 13th, 2009, 11:42 PM

mines does that now and as soon as the engine comes out, so is the tranny. promotion rebuild with carbon synchros. YEA!!!!

Ethan79 · October 14th, 2009, 08:35 PM

haha i dont know what im gonna do.. i think i have a bad pressure plate.. so we will see how bad it gets and i guess im on the look out for cheap t-5's or t-45's

and i dont have a short throw shifter. but i do have the tri-ax handle with the hurst pistol grip handle... maybe a short throw would help??

flatlinerford · October 14th, 2009, 08:53 PM

i gotta trans if ur intrested

Ethan79 · October 14th, 2009, 09:19 PM

where are you located? and how many miles?

flatlinerford · October 14th, 2009, 10:52 PM

i used to be in hamtpton ,va but deployed the tranny has about 15-20k on it all highway i used to drive back and forth from va to sc on weekends its located at my dads house in south carolina.

Ethan79 · October 15th, 2009, 05:47 PM

alright. i may be intested later on . but i thin kits fine for a while. i will let you know

'97'Cobra · October 16th, 2009, 11:54 AM

Originally Posted by flatlinerford

i used to be in hamtpton ,va but deployed the tranny has about 15-20k on it all highway i used to drive back and forth from va to sc on weekends its located at my dads house in south carolina.

im actually in hampton right now, how much are you wanting for the tranny?

ReverendDexter · October 16th, 2009, 02:54 PM

Originally Posted by Ethan79

and i dont have a short throw shifter. but i do have the tri-ax handle with the hurst pistol grip handle... maybe a short throw would help??

The handle alone is gonna hurt more than it helps, but I honestly don't think a short-throw would help this particular situation anyway. If it's a T45, it just needs to have the shifter replaced with one that has positive stops, or you risk bending a shift fork.

The only other thing I could suggest other than a bad syncho is if you still have the factory auto-adjusting clutch quadrant. That thing's a piece of trash, can get to a point where pedal-to-the-floor doesn't have the clutch totally disengaged, and really needs to be replaced with an aluminum quadrant with a firewall adjuster. I suggest the one that Maximum Motorsports sells (you can get the whole kit with the quadrant, adjuster, and new cable for $120 or so), though I'm sure others are good also.

ModMustang97GT · October 16th, 2009, 03:13 PM

There are also issues with the clutch cable. If you don't have a quadrant adjuster and such, you can't fix it. Your clutch pedal is adjustable from the factory, but they get kind of stripped and don't work very well. The adjustable clutch quadrant and firewall adjuster help. I know that I had a similar thing, but my clutch cable was also stretched which didn't help.

September 11th, 2009, 07:56 PM	#1
Ethan79 Newbie 1998 Mustang GT too slow Join Date: Sep 2009 Location: Ashburn, VA Posts: 26	grinding into 2nd only when shifting fast hey this is my first post but i need some help.. i have a 1998 GT 5spd. the tranny is the t5 i belive. when i shift from 1st to second quickly it grinds real bad, but only when i shift fast. my guess was the synchronizers...any ideas? thanks

September 11th, 2009, 09:46 PM	#4
Doc8224 N/A 4v Guru 2003 Mach 1 Join Date: Oct 2007 Location: Ft. Hood,TX Posts: 3,256	synchros __________________ U.S. Army Aviation Apache's Lead The Way

September 11th, 2009, 10:02 PM	#5
AMmuslGT Baby Punchin' Champ 2008 Mustang GT I have a toy Pony. He takes Big shits Join Date: Apr 2008 Location: Gilbert, Az Near phoenix Posts: 1,723	its unicorns jumping and poking holes in your exhaust and shitting in your filters __________________ Mods In garage

September 28th, 2009, 01:35 AM	#8
ReverendDexter Devil's Advocate '98 Cobra/'90 GT 'vert Join Date: Jan 2007 Location: Santa Rosa, CA Posts: 3,836	It's a T45, and mine does it, too. It did it before a rebuild, it still does it after a rebuild. I chalk it up to "they just do that". Maybe I'm being too complacent, though. You do have an aftermarket shifter, though, right? If not, you need one. __________________ War is Peace \|\| Freedom is Slavery \|\| Ignorance is Strength Founder of the DMC

September 29th, 2009, 09:40 PM	#9
cliffyk Enthusiast Join Date: Feb 2007 Location: Saint Augustine, FL Posts: 621	I just posted this today on another board, in response to a questions as to what transmissions were recently used---thought it might be of interest here: From the Red Book: Fitment: '94 to '95 used the Borg-Warner produced T-5; '96 to '98 used the Borg-Warner produced T-45 '99 to '01-1/2 used the Tremec produced T-45; '01-1/2 to '04 used the Tremec 3650; Input Torque Ratings: the BW T-5 is rated for 300 lbft (I have seen 310 in some sources); the BW T-45 is rated for 320 lbft; the Tremec T-45 is rated for 325 lbft; the Tremec 3650 is rated for 360 lbft; Ouput torque ratings would be the input torque limit times the selected gear ratio. The OEM T-56 used in the Cobras is rated for 450 lbft input torque. __________________ -cliff knight- My Mustang GT 2003 GT, UPR X, Magnaflow, 180° stat, PP 70mm TB & plenum, Sniper Commando tuned 3.73s, 262 rwHP/305 ft.lb. Multi-fuel: burns gas and rubber...

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September 11th, 2009, 08:09 PM	#3
Ethan79 Newbie 1998 Mustang GT too slow Join Date: Sep 2009 Location: Ashburn, VA Posts: 26	i went down the street, got up to speed then engaged the clutch and quickly went from 1st to 2nd several times back and forth, still grinds with clutch pedal fully pressed in.

September 28th, 2009, 01:29 AM	#7
v8muscle Regular 1990 gt Join Date: Jul 2009 Location: va Posts: 89	my 1990 does the exact same thing let me know if it was your synchros.

October 7th, 2009, 04:10 AM	#10
Cobra GT Regular 1997 Cobra Join Date: Dec 2008 Location: New Orleans, La. Posts: 108	synchros __________________ 96 GT (sold) 97 Cobra 93 Ranger

October 13th, 2009, 10:50 PM	#11
rider4life350 Regular 2000 Mustang Gt 14.02 Join Date: May 2009 Location: Bath Pa Posts: 165	mine does that to but not too bad yet, let me know if you find out its the synchros. __________________ 2000 GT, Godspeed Omega Wheels, Mac CAI, Mac Prochamber, Bassani Catback, 4.10's, MM Full length sub frame connectors, Pro 5.0 shifter, SCT SF3.

October 13th, 2009, 11:42 PM	#12
zigbigadoru Enthusiast 1997 Mustang GT Join Date: Feb 2008 Location: lansing, MI Posts: 897	mines does that now and as soon as the engine comes out, so is the tranny. promotion rebuild with carbon synchros. YEA!!!! __________________ quote from the gathering storm: how do you fight someone who is smarter than yourself? the answer is simple. you make her think that you are sitting across the table from her, ready to play her game. then you punch her in the face as hard as you can

October 14th, 2009, 08:35 PM	#13
Ethan79 Newbie 1998 Mustang GT too slow Join Date: Sep 2009 Location: Ashburn, VA Posts: 26	haha i dont know what im gonna do.. i think i have a bad pressure plate.. so we will see how bad it gets and i guess im on the look out for cheap t-5's or t-45's and i dont have a short throw shifter. but i do have the tri-ax handle with the hurst pistol grip handle... maybe a short throw would help??

October 14th, 2009, 08:53 PM	#14
flatlinerford Regular Join Date: Jul 2009 Location: cola,sc/hampton,va/kuwait. Posts: 189	i gotta trans if ur intrested __________________ buy/sale/trade n e thing...

October 14th, 2009, 09:19 PM	#15
Ethan79 Newbie 1998 Mustang GT too slow Join Date: Sep 2009 Location: Ashburn, VA Posts: 26	where are you located? and how many miles?

October 14th, 2009, 10:52 PM	#16
flatlinerford Regular Join Date: Jul 2009 Location: cola,sc/hampton,va/kuwait. Posts: 189	i used to be in hamtpton ,va but deployed the tranny has about 15-20k on it all highway i used to drive back and forth from va to sc on weekends its located at my dads house in south carolina. __________________ buy/sale/trade n e thing...

October 15th, 2009, 05:47 PM	#17
Ethan79 Newbie 1998 Mustang GT too slow Join Date: Sep 2009 Location: Ashburn, VA Posts: 26	alright. i may be intested later on . but i thin kits fine for a while. i will let you know

October 16th, 2009, 03:13 PM	#20
ModMustang97GT Hardcore Enthusiast 1997 Mustang GT Faster than an s4 Join Date: Aug 2007 Location: Seattle, WA Posts: 1,315	There are also issues with the clutch cable. If you don't have a quadrant adjuster and such, you can't fix it. Your clutch pedal is adjustable from the factory, but they get kind of stripped and don't work very well. The adjustable clutch quadrant and firewall adjuster help. I know that I had a similar thing, but my clutch cable was also stretched which didn't help. __________________ Aztec Gold 97GT. MM CC Plates, Panhard Bar, SFC's & Tower Brace Eibach Sway Bars H&R Race Springs/Bilstein Shocks MAC CAI, LT's, Catted H and Pro-Dumps KB Boost-a-Spark PI Swap Spun Main Bearing... Author of The Official Suspension Guide

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