[67MercCat]

Hey guys, I'm putting a T-5 into my buddies Mustang 289 and I'm wondering whats up with this flywheel pressure plate issue. He bought them together, and the 28oz flywheel is smaller to accomodate the small T-5 Bellhousing, but the pressure plate only matches up in three bolt holes all equally spaced from each other. is three bolts enough or do I have to have 3 more machined into the flywheel?

thanks

 

[67MercCat]

is three bolts enough? I dont know much about manual trans'

 

[woodsnake]

If he bought them together, I would think so..Are there stud holes in the flywheel that you think should be getting used?

 

[67MercCat]

yeah theres 12 stud holes and 6 threaded holes, but the pressure plate doesn't align with any of them except those three thread holes

 

[CougarCJ]

Is it a matched set? OEM 1967 flywheel to OEM pressure plate. And you can get a modern flywheel with 28 oz (for vintage engines) that fits the T-5 pressure plate and clutch.

 

[restomodcougar]

Keep turning them till all match up. I have never heard of only 3 meeting up but that would definitely not be enough. Do you have a picture you could post of it?

 

[Bad69cat]

The older 28 oz. flywheel is what you need with a 10" clutch. You can buy a fancy new 28 oz flywheel that will allow you to run the 10.5" clutch, but they run upwards of $300+ dollars Just depends on how built the motor is what you need....http://www.stangnet.com/mustang-forums/threads/28oz-flywheel-for-t5-swap.852142/

 

[kooade]

I've bought these flywheels before http://starperf.com/index.php?p=product&id=196384 It' kinds of strange sometimes the balance weights are tig welded on sometime mig welded sometimes bolted on. I bought the second one down and it had multiple bolt paterns. http://starperf.com/index.php?p=catalog&parent=134982&pg=1. The place is close to me in KC.

 

[67MercCat]

He did buy a aftermarket flywheel because it fits the T-5 Bellhousing no problem and it's smaller than the original 289 flywheel. It just seems like this pressure plate holes don't line up except for in three equally spaced locations. I reckon that isn't enough to hold that pressure plate in place. when i rotate the pressure plate it seems like it want to be in the right position but its off by 1/4 inch. Here's a pic...

 

[kooade]

Something is wrong. There is a mismatch in the parts. It doesn't look like the dowels line up either. I wouldn't trust it.

 

[67MercCat]

Kudos, I don't trust it either. I measured the pressure plate and the clutch and they're 10.5 inch, I think that the flywheel is designed for a 10 inch clutch and pressure plate. Look how close the pressure plate rides the edge of the flywheel. Seems like the starter would chew it up being that close to the teeth.

 

[67MercCat]

Well it appears that there is no 10 inch clutch pressure plate according to Ford, so I guess its just plain old wrong pressure plate. It's a C6Ze stamped flywheel too.

 

[restomodcougar]

Yes it could it be the pressure plate is wrong if the stamping on the flywheel is correct??? Or it also looks like the holes were drilled just off somehow.

 

[kooade]

The 10" clutches were on the early fox mustangs. It could be that you have a 11" pressure plate on a 10.5" flywheel. I would go this route if you can return what you have. http://starperf.com/index.php?p=product&id=196384 Then get a clutch and pressure plate for a 1993 mustang 5.0

 

[67MercCat]

oh crap, well I gotta figure out what to do because my buddy is overseas, I'l ltry and skype him tonight about it. but I want to figure it out first. How do you measure the pressure plate? I thought it was the diameter of the clutch contact area? If thats the way you measure it, 10.5 Pressure plate. I'm going to bring the flywheel to the parts shop and ask him to bring out two different models to determine whats going on.

 

[CougarCJ]

Is this project using the original style clutch linkage or the modern cable clutch?
You have to make sure that the 157 tooth flywheel matches what you are going to use.

 

[67MercCat]

It's actually a hydraulic clutch set up he's using from modern driveline, I'll count the teeth when I get back to the shop in the morning. this is such a pain

 

[Bad69cat]

LOL - your not alone.....A mistmatch no doubt, very easy to do - unfortunately. To bad they can't make it obvious -----like underoos or something! ;>0 PITA

 

[kooade]

At least you caught it before you put it together. I once bought a flex plate that was 28 oz and I did a side by side comparison with the old flex plate before I installed it. The weight on the new one was almost twice the size. I took it back to where I bought it and come to find out it was a 50oz packaged in a 28oz box from the factory. All of their 28 oz flex plates of this brand were boxed wrong It happened to be I was the first to buy one of that batch. There would have been a whole bunch of vibratory sbf's out there. I come to learn that If you think something is wrong your more than likely right when it comes to pieces not fitting.

 

[67MercCat]

yeah your right kooade, I'm going to just bring it to a clutch and drivetrain shop down the street. they should be able to take care of me and help figure out what I got going on. thx guys