[steelheep]

I bought a motor on this forum and the guy told me it was an 87 T1. That is the same motor that I have but the flywheel is a 8 bolt on the old motor. The new motor has a 6 bolt. The block is stamped 85 on the new one. So I got a 6 bolt flywheel and it doesn't match up. What's the deal? This may be a stupid question but I'll ask anyway. Is there a difference on turbo and non turbo flywheels, and if this isn't a turbo motor can I make it one? Thanks

 

[tryingbe]

The block is not a 87.

DDG- Turbo shortblock

81-85 2.2 Carb & TBI 92 mm stroke 6-bolt PN 5214737 Cast
84-85 2.2 Turbo 92 mm stroke 6-bolt PN 4105498 Cast
86-94 2.2 TI & N.A. 92 mm stroke 8-bolt PN 4343407 Cast
87-90 2.2 Turbo II 92 mm stroke 8-bolt PN 4323815 Forged
87-94 2.5 TBI 104 mm stroke 8-bolt PN 4323405 Cast
89-93 2.5 Turbo 104 mm stroke 8-bolt PN Cast

 

[puppet]

There is a bolt offset on the crank ... for both 6 and 8 bolt crank/FW. Rotate the flywheel on the crank to find lineage upski ... hobbin'

 

[steelheep]

This may be a stupid question but I'll ask anyway. Is there a difference on turbo and non turbo flywheels, and if this isn't a turbo motor can I make it one? Thanks

 

[puppet]

Yes there is a difference. The turbo flywheel will be 15mm larger diameter. (215 vs 230mm)
You can swap in a turbo FW for a TBI one.

On making it a turbo engine ... if it's now really TBI you'll be looking at a piston change and possibly connecting rods. '85 connecting rods are pretty strong .... if it's a '86 TBI build you'll be looking to swap in the better rods. (Need to check part numbers here for what you have). Need to have the block drilled for turbo oil return.

Optionally, having the block tapped for the larger head bolts <---- if you're going to run some big boost you'd do this.

.... or, sell what you've got and buy a later model turbo short block.

 

[steelheep]

Well the block has holes for the oil return. Does that mean they need to be drilled larger?

 

[puppet]

No ... means that the engine is a turbo block at least.

 

[steelheep]

Well that's good so now I have to figure what year. Like I said it does have a 6 bolt flywheel. But the one that I sent out for doesn't fit.

 

[steelheep]

So now what the **** do I do?

 

[steelheep]

Is there a flywheel difference if it was for an intercooled motor?

 

[tryingbe]

Get your money back.

 

[impuresoul2k3]

The only bolt pattern difference is between 85 & 86

 

[steelheep]

What's the difference on the 85 & 86?

 

[jim34]

85 has a 3 bolt torque convertor with 6 bolt crank

 

[Screamin4banger]

So now what the **** do I do?

Puppet told you there was an offset to the holes. Did you take this into account yet? Put the engine to TDC on the compression stroke and hold the flywheel with the timing mark UP (12 o'clock). see if it doesn't line up now.

good luck.

 

[steelheep]

It's beginning to look like I'll have a new motor and an 88 Pacifica for sale.

 

[kermit]

There are two different flywheel bolt patterns. 6 and 8 bolt. Either you can't count or can't see. Stupid question, where did you get that flywheel from...are you sure that it's a 2.2/2.5 flywheel.

 

[Turbo Charger]

Get your money back.

I'd consider it a gift if I got a stronger early T1 rods over the cheap lightweight rods in the 87 T1.