Fairlineguy
Club Member
Are the early E31 cylinder heads still disarable for tuning.
As I noticed that an engine /gearbox I have for sale has one fitted.
As I noticed that an engine /gearbox I have for sale has one fitted.
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E31 cylinder head disarability
- Thread starter Fairlineguy
- Start date
SeanDezart
Well-Known Forum User
There is no 'best' head.
http://datsunzgarage.com/heads/
The E31 is an uncommon, desirable head that came on the first 10,00 or so 1970 240's. It's chambers were high-quench designs, however the valves were smaller than the 260 and 280 heads. After 46 years, most of them are long gone. 42cc chambers I believe. It uses an external oil spray bar.
http://datsunzgarage.com/heads/
The E31 is an uncommon, desirable head that came on the first 10,00 or so 1970 240's. It's chambers were high-quench designs, however the valves were smaller than the 260 and 280 heads. After 46 years, most of them are long gone. 42cc chambers I believe. It uses an external oil spray bar.
Mr Ex Jnr
Club Member
SeanDezart
Well-Known Forum User
Know, I no nuffink.
Alphabettispaghetti
Club Member
Depends on its condition. Have you got it off the block to see how/if it's corroded? General condition?
They have soft valve seats so do need a full going over to get them up to spec.
I could be interested as a spare.
SacCyclone
Club Member
I have been collecting these heads for a few years as they are rare and good for a few points in compression. In the next few weeks, I will be taking one to a local engine builder for port and polish as well as larger valves. In addition to a large lift cam, I am hoping this combination will be good for some extra HP.
Will try to start a thread on these heads in the next few weeks or so.
I would hang on to it for now.
Cheers