Exhaust Manifold to "Y" pipe bolt style

[mihulka3]

What replacement bolts can I use to hook up my exhaust maifolds to the "Y" pipe? I was told everything from "spring bolts" to a plain "nut and bolt".
The guy doing my engine said all that was on the manifold was a nut and bolt but several web sites don't jive with this?
We put new head on the 2.9 and he had to cut the bolts of the old head etc.

 

[MichiganLarry]

I got mine at the Ford dealer. $$$$$$

 

[mihulka3]

Ford Ripoff

Can't get them. Will try 92 2.9 bolts tomorrow.

 

[CraigK]

If I had my manifolds off and/or good access to the Y-pipe flange, there is only one way I would go . . .

Drill out the rusted studs. Use a minimum 1/4"or larger (5/16", 3/8") diameter drill bit.
Use the largest possible diameter hardware store stainless steel nuts and bolts with SS lockwashers, and LOTS OF ANTI-SEIZE THREAD COMPOUND (moly type).

You will probably never again have an issue with removing and replacing Y-pipe hardware.

CraigK

 

[CraigK]

mihulka3

You might also want to check out the thread "Y-pipe to Manifold Flange Fix" in the Exhaust section here, and this website >> www.the-hush.com

CraigK
P.S. And move this thread to the Exhaust section?

 

[mihulka3]

Got some for a 92 to use from Ford.

 

[mihulka3]

Is this not part of a 2.9?

How do you move this thread to exhaust?

 

[AllanD]

The factory bolts to hold the Y-pipe to the exhaust manifolds
on ALL 2.9 engines as well as OHV 4.0's are the same.

they are a 12mm X 1.75 bolts

a Bolt 45mm long is about perfect.

the factory bolts were "Truncated root" self-locking bolts
If you get the old bolts (B-O-L-T-S, NOT studs)
out of the manifolds you can replace them with the bellhousing
bolts from a 3.0 engine.

the bolts are more than prone to rusting in place so I still don't
understand why ford was so obsessed with locking them in place...


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