Ashyukun

iTrader: (3)

When I rebuilt my '88 Vert's engine, I had to replace a number of hard parts due to the damage that caused the rebuilt- somehow a large flanged bolt got ingested by the engine and destroyed a rotor and housing and damaged the center iron. I ended up with a S5 center iron instead of an S4, since it was what was handy and I figured it meant being able to eliminate the EGV block-off plate.

However, now that the engine is together and on the car, I CAN NOT get the ACV to seal against the LIM- I get a fairly strong exhaust leak at the bottom of it. I'm concerned that if I tighten the nuts any further that I'm going to break one of the studs (can someone remind me what the official torque spec is for those again too?).

Before I go the next step and just get a block-off plate from Banzai Racing and ditch the ACV entirely (Kentucky has no emissions to worry about), I wanted to check and make sure that the problem wasn't some incompatibility that I wasn't aware of between the S5 center iron and the rest of the S4 setup. Thanks!

RotaryEvolution

iTrader: (30)

uh your issue isn't the ACV... it is the big rectangular hole that now resides below the center of the S4 lower intake manifold.

remove the LIM and get a piece of "U" shaped aluminum trim that is about the same size as the slot, trim it to length and hammer that sucker in there, reassemble, done.

the S4 n/a irons had a round freeze plug pressed in at the same location.

Ashyukun

iTrader: (3)

Ah, so it IS due to the S5 iron. I'll have to take the LIM off over the weekend and see what I can do about plugging it up like you said.

Thanks!

RotaryRocket88

iTrader: (7)

Some pictures showing the port air path differences on S4 and S5 LIMs: http://homepage.mac.com/carldavis/intake/mod.html.

gameova

iTrader: (17)

wow i didn't know that great info guys!!!