Head Swap

[MC75Z]

My 77 has the stock round ezhaust port head. It burns oil and leaves a cloud of smoke when I get on it. I have about 160lbs compression and the motor runs strong. I am assuming that the seals on the valves are the cause of the smoking. I have a E88 which has been rebuilt and never used. How would this work on my L28 which I assume has the stock domed pistons ( I've never had the head off ).

Thanks,

Michael

[Arne]

First, do some further checking before you condemn the valve seals. Your oil burning could just as easily be caused by sticky or collapsed oil scraper rings.

There are at least three different versions of the E88 head. Your compression will vary depending on which version you have. All E88 versions have smaller exhaust valves than what you have now, and all but the one that came on the 260Z have smaller intake valves as well.

In short, the E88 may not be the ideal replacement, but will work. But I'd recommend finding out for sure what the issue really is before slapping on a different head.

[=Enigma=]

How would this work on my L28 which I assume has the stock domed pistons ( I've never had the head off ).

I believe you mean "dished" rather than "domed".

Dished = concave

Domed = convex

Or innie and outie if you prefer. LOL

[nwcubsman]

I believe you mean "dished" rather than "domed".

Dished = concave

Domed = convex

Or innie and outie if you prefer. LOL

So is my F54 + P79 called flattie or ? Good one Mr. Nigma!

[Arne]

She need a little augmentation, Bryan?