Deck height P1 vs P2?

[Guest]

Im running p2 block/heads and what I'm sure is a p1 exhaust mani. The mani seems too short it takes a bit of leverage to get it on and it stretches the bellow to make it fit. Is there a difference in the deck height that causes that?

[Guest]

Anyone?jdjagjekgnt

[94 Leone]

Why is none of this kind of **** documented? Free bump until useful answer arrives.

[soopersubaru]

 evowrx said:

Im running p2 block/heads and what I'm sure is a p1 exhaust mani. The mani seems too short it takes a bit of leverage to get it on and it stretches the bellow to make it fit. Is there a difference in the deck height that causes that?

No its a miss match of the front crossover pipe and the up pipe. Early up and recent(late 90's) crossover.

Oh oops not up pipe and cross over issue.

Deck height differenes would/should not cause this.

However "stretching" a wee bit to make the crossover pipe fit is not a problem.

Treat it as a pull up cold clearance.

Edited May 28, 2014 by soopersubaru

[Guest]

This is a bit more than a stretch and theyre tight against the studs the flexi stretches for them to work. Never had that issue before with headers they normally slip straight on.

[hijacka]

I've had this issue before using p1 on p1 or 1.5.

I've also had to machine flat all the mating surfaces of the said exh manifold(i did this on my bench sander)Took ages and was very boring job lol! Plus add 2 gaskets to each end of the crossover pipe rather than one each end, heat plus 20 years might have something to do with it, I do think over tightening the crossover pipe bolts plays a roll in warping the flanges as well.

As far as i know all deck heights are the same. all con rods are same length its bore size and crank stroke that makes the different displacement

[Guest]

Yep ive always cleaned them up with sandpaper. I torque my exhaust bolts and each time i have it off i add .5nm. Change them out when i get to +2nm. I was sure stock deck height was the same but cant figure out whey they dont fit. Will just cut the flexi out and extend it one day.