Originally Posted by
Ron Earp
Hey Chris,
Thanks, let me find out. Mike Mackaman had some info about that on the site somewhere. I'll PM him and see if he knows.
Oh, wait, duh.
The 260Z has the larger exhaust value. The 240Z had a 1.65" intake and 1.3" exhaust. This valve size stayed the same till the 260Z when they went to a 1.38" exhaust ( same as the 280). So, if the exhaust valve measures 1.38" then it is, more than likely, a 74 E88 head and legit for a 260Z.
I'll try to check tonight. We have literally dozens of heads, but most are either from 240z's my uncle dismantled through the years, or from 280z's that came in a lot of parts someone gave him years ago. There is one E-88 head that came on a 260z motor a friend gave us, but as old as it is there is no guarantee it's the original head from that motor. I'll check the exhaust valve width and get back to you as soon as I can.
Chris Carey
Central Florida Region
ITS/Vintage Datsun 240Z
Favorite tool to remove undercoating---- A curb!
"Understeer is when you hit the wall with the front of the car and oversteer is when you hit the wall with the rear of the car.
Horsepower is how fast you hit the wall, torque is how far you take the wall with you."
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