L28ET exhaust manifold gasket matching / allowable warp Question (pics)

[hughdogz]

I've been checking out Gabe's thread (and Austin's pics too) about porting the L28ET exhaust manifold: http://forums.hybridz.org/showthread.php?t=133065

 

I have a P90A head and the exhaust ports line up perfectly to an OEM gasket.

 

I want to gasket match this exhaust manifold, but I'm wondering if this warp is normal or not, since it doesn't seem to line up.

 

I suppose I could gasket match port-centered versus gasket / head-centered?

 

I don't know what's going on, I'm hoping it will expand and line up after it reaches operataing temperature. I know there is quite a bit of allowable float on the flange...but this seems a bit excessive to me.

 

What do the experts say?

 

Thanks! -hughdogz

 

 

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