T5

johnwb · 10-13-2006, 07:17 PM

Is it possible to upgrade a 4cyl T5 to withstand the same torque as a 93 5 liter T5 ,wich I believe is around 310lb/ft,If anyone has done this what parts do I need.

vristang · 10-13-2006, 08:23 PM

I think the only reason for the lower power rating is that the 4cyl version uses bigger gears (more multiplication).
From what I understand it is the different ratios that makes the difference.
I have never seen any confirmation that the materials used were any different.

I would run the 4 cyl trans til it dies. In the mean time start building a custom t5 with the exact ratios you want.

jason

1979bruiser · 10-15-2006, 07:31 AM

i have had friends that have gone through a trans every other month and eventually started using the 4 cyl trans and some times got longer times of use out of them.

mustangII460 · 10-16-2006, 06:23 PM

Eventually the 4 banger trans will kill your rear engine bearing.

The pilot shaft on the 4 cyl T5 is longer and smaller dia. There is a pilot shaft bearing that will take up the slack on dia, but not lenght. Machining the lenght is needed.

So in short, It will push into your crankshaft and rattle around if the above in not done.

Will it work, yeah, would I use one? No way. One good launch will shatter it.

A good used V8 T5 or even a new one is alot less than a engine rebuild.

My $.02

johnwb · 10-16-2006, 07:08 PM

Thanks,for the info,ill start looking for a 5 liter tranny.

vristang · 10-17-2006, 12:28 AM

Quote:

Originally Posted by mustangII460

Eventually the 4 banger trans will kill your rear engine bearing.

The pilot shaft on the 4 cyl T5 is longer and smaller dia. There is a pilot shaft bearing that will take up the slack on dia, but not lenght. Machining the lenght is needed.

So in short, It will push into your crankshaft and rattle around if the above in not done.

Will it work, yeah, would I use one? No way. One good launch will shatter it.

A good used V8 T5 or even a new one is alot less than a engine rebuild.

My $.02

The input shaft bearing can be found in the correct size.
There are several applications that are listed in the forums from time to time.
Basically measure the ID of the crank, then measure the OD of the 4 cyl T5.
Take those 2 measurements to a parts store, and they should be able to find the right bearing for you.

Yes the 4cyl unit is still slightly weaker, but it will hold up for a while if you don't beat the living crap out of it on a daily basis.

If funds are tight, the 4cyl t5 can work well. It just isn't likely to work forever.

jason

10-13-2006, 07:17 PM	#1
johnwb 88lx work in progress Join Date: Jul 2005 Location: canada Posts: 62	T5 Is it possible to upgrade a 4cyl T5 to withstand the same torque as a 93 5 liter T5 ,wich I believe is around 310lb/ft,If anyone has done this what parts do I need. __________________ 88lx,4cly body,90 5.0l,e cam,summit headers,holley 650 double,edelbrock performer rpm intake,crane valve springs,e7tes lots of machining,5 speed,3.73s,exhaust flotech,with 2.5"exhaust

10-13-2006, 08:23 PM	#2
vristang Registered Member Join Date: Feb 2006 Posts: 50	Re: T5 I think the only reason for the lower power rating is that the 4cyl version uses bigger gears (more multiplication). From what I understand it is the different ratios that makes the difference. I have never seen any confirmation that the materials used were any different. I would run the 4 cyl trans til it dies. In the mean time start building a custom t5 with the exact ratios you want. jason __________________ Check out my new Mustang website! - Including: TwEECer, EEC-IV, C&L, 351w Fox Swaps, PCV Oil Control, and more. 1990 GT - 408w - 17mpg TwEECer RT 1.30A10 - X3Z - A9L strat. / EA Forged Bottom End / Gapless Rings / CR 8.85:1 / Custom Cam / Ported Trick Flow Heads / Box Upr / Lightning Lwr 17x9 Cobras / Front 255s / Rear 275s / 5 Lug Cobra Disc Conversion / Auburn Ltd. Slip / 3.27 / 31 spline axles / Panhard Rod / Upr&Lwr Control Arms 1987 Red LX - 2.3L - Planning 2.3t Converison

10-15-2006, 07:31 AM	#3
1979bruiser Registered Member Join Date: Aug 2006 Location: budds creek md Posts: 100	Re: T5 i have had friends that have gone through a trans every other month and eventually started using the 4 cyl trans and some times got longer times of use out of them.

10-16-2006, 06:23 PM	#4
mustangII460 Factoy Five Roadster Join Date: May 2000 Location: Sevier Co,Tennessee Posts: 1,681	Re: T5 Eventually the 4 banger trans will kill your rear engine bearing. The pilot shaft on the 4 cyl T5 is longer and smaller dia. There is a pilot shaft bearing that will take up the slack on dia, but not lenght. Machining the lenght is needed. So in short, It will push into your crankshaft and rattle around if the above in not done. Will it work, yeah, would I use one? No way. One good launch will shatter it. A good used V8 T5 or even a new one is alot less than a engine rebuild. My $.02 __________________ Frank

10-16-2006, 07:08 PM	#5
johnwb 88lx work in progress Join Date: Jul 2005 Location: canada Posts: 62	Re: T5 Thanks,for the info,ill start looking for a 5 liter tranny. __________________ 88lx,4cly body,90 5.0l,e cam,summit headers,holley 650 double,edelbrock performer rpm intake,crane valve springs,e7tes lots of machining,5 speed,3.73s,exhaust flotech,with 2.5"exhaust