T-5 flywheel question (did some digging but still have a ?)

[Chuck W]

OK, I've done the searching, found the articles and read them, but I have just one question on the T-5 swap behind an 83 200ci (BB200?) using the 5.0l bell.

BB200

The BB200 contains 2/3rds of a V8 block pattern. This engine came originally with a C5 automatic transmission. To install a manual tranny behind this motor, you must use a SBF bell housing, flywheel and clutch setup. The flywheel must be the 157T V8 flywheel, re-balanced from a 28 or 50oz imbalance to a zero imbalance. Also, because this block still has the 200 crank, the flywheel mounting pattern must be redrilled for the 6-cyl crank. I'd suggest drilling the new holes before having the flywheel balanced.

How far off are we talking here? Do I fill the holes and redrill? Offset and drill new between the old? The rest I get, but since I don't have both flywheels sitting here in front of me, I can't see what needs to be done.

I'm going to be using a 4 cyl T-5, so I'll need to go back and dig up that part number, or I suppose I could just make something to hold the 4 cyl bearing myself and press that into the crank.

Thanks!

 

[XFlow_Fairlane]

hey chuck glad to see you make it over here from turboford!! THE GUY to tal to is AL as he is the bellhousing expert here.

 

[Funky Cricket]

hell glad to see you from foxtbirdcougarforums.com

 

[Chuck W]

Hey guys.



Anyone have any helpful info on this?

 

[MustangSix]

The bolt circle diameter on the crank is smaller. You'll have to redrill between the flywheel holes to match the 200 crank.

The one thing that makes it tricky (but not impossible) is that the holes are not evenly spaced. Ford laid them out so that they will only engage the crank one way. You could do this by hand.

The other alternative would be to elongate the new flywheel holes with a grinder. Since the flywheel is centered on the crank pilot hub, you could also carefully do this by hand, removing only as much material as was necessary.

All of this is invalid, of course, if you are building some sort of 300hp turbo monster....

 

[Chuck W]

Mustang 6-
Perfect! Thanks. That tells me what I need to know.
For right now a 300hp monster is not in the plans for the I-6. I'm just tryng to get rid of that damnable automatic for the time being.

So it sounds like:

1. Add two holes to the bell to fit the block
2. Adapt a pilot bearing (using 4 cyl trans)
3. Modify holes in flywheel, and rebalance to 0.

And I'm set.

Thanks!

 

[Anonymous]

1) The bolt circle diameter on the crank is smaller. You'll have to redrill between the flywheel holes to match the 200 crank.

2) All of this is invalid, of course, if you are building some sort of 300hp turbo monster....

1) I have heard of some trying to elongate the holes, but do a V 8 and a 200 6 have the same staggered bolt pattern (just larger and smaller diameters) or is the stagger pattern different?

2) I AM planning to build an all-out, alloy headed fire breathing turbocharged 300+ horsepower monster.

So you are saying I shouldn't re-drill and re-balance a 302 flywheel for use on a 200 6?

 

[Chuck W]

If you are going the monster route, you should either have a custom flywheel done (157T V8 with a 200 bolt pattern). Something you might do is full the existing holes and then redrill...this fills back in the voids you'd be leaving if you offset and redrilled.

I guess if the staggers are the same, you may be able to elongate the holes radially and not add extra holes in between them.

 

[MustangSix]

2) I AM planning to build an all-out, alloy headed fire breathing turbocharged 300+ horsepower monster.

If you're building an all out motor, you should contact one of the billet flywheel makers and have the crank holes drilled for your app. Either that or have the crank drilled and tapped for a SBF/250 bolt pattern.

 

[Anonymous]

Either that or have the crank drilled and tapped for a SBF/250 bolt pattern.

I didn't think there was enough room for that? Never thought about it.....

 

[MustangSix]

I'm not sure either, but it might be an option.

Actually, if there was space, you could drill some extra bolt holes in the crank, adding three to six more bolts. I-6's are notorious for harmonics that loosen and break flywheel bolts. Maybe the extra clamping would help.