cylinder head compatiblity

[pauly_adams]

hey i was just wondering what heads are compatable on a L26 block and if a p40 head for a nissan patrol will suite a L26 block

[gav240z]

The most compatible heads would be the following:

E30

E31

E88

 

I think the patrol one you are referring to is a P90 head. The P90 has quite large valves and would more than likely require that the block have valve reliefs inserted into it. Since the L26 block is probably stamped P30 which means it is the same block as the L24.

 

The L26 just had a different stroke.

 

It would be best to use a L28 block with any L28 head, but it is not impossible to modify the block to fit.

[lambs]

P40 L-series head ??, no such thing AFAIC, but if you have any photo's of the head I'd be interested. Patrol L28's used N42 head, or at least the 1/2 dozen or so that I've seen. P90 head was turbo L28 only, but it's possible one was fitted to a Patrol motor in a change-over at some stage.

 

BTW, there was a P40 Nissan engine used in early Patrols. It was a 4L OHV straight 6...sure your not getting confused with that.

 

As far as L26 blocks are concerned, they have the exhaust valve cut-out included at the top of each bore unlike L24 blocks, although they are all identified 'P30".

[pauly_adams]

thanks for the info hears the email the person sent me (hi there its a p40,or p head 4 litre motor they are the same.cheers mark) also just wondering which carbies/carbie would be better a duel barrel daf carbie which was apperently was on eary 240z or the diseased double su,s from a 260z thanks pauly

[pauly_adams]

thanks for the info hears the email the person sent me (hi there its a p40,or p head 4 litre motor they are the same.cheers mark) also just wondering which carbies/carbie would be better a duel barrel daf carbie which was apperently was on eary 240z or the diseased double su,s from a 260z thanks pauly

[lambs]

thanks for the info hears the email the person sent me (hi there its a p40' date='or p head 4 litre motor they are the same.cheers mark) also just wondering which carbies/carbie would be better a duel barrel daf carbie which was apperently was on eary 240z or the diseased double su,s from a 260z thanks pauly[/quote']

 

Well, the P head won't fit an L block, that's for sure (even if it did, try getting the valves to work.......).

 

Weber DAF carb was never used on an L6 engine from the factory, but I suppose someone might have tried in conjunction with a 240K manifold or similar (eg 260C, 240C, etc). Best to use a set of 240Z Hitachi carbs (SU copy) as they will bolt straight on and are a good performance or even standard engine option.

[pauly_adams]

i have atm a daf duel barrel carbie with a n32 manifold on my car it was put on by the people i bought it from and i was shocked to find the original su's where in the boot and also in fairly good nick thats the reason y i asked atm my zd is in the shed working but aint goin nowhere beacause of the lack of funds due to army stuffin me round so till january id say the zd will be in the shed also if possibe does any 1 no anything bout the daf caries thanks pauly

[JBWetzels]

 

Well' date=' the P head won't fit an L block, that's for sure (even if it did, try getting the valves to work.......).

quote']

 

what about the p90 head on the l28et

[thehelix112]

Joe,

 

Lambs is talking about the head from the P-series engine, as distinct from the P-designated head from the L-series engine.

 

Pauly,

 

Don't mean to be rude, but please add some grammar/punctuation. Your posts are a royal PITA to read.

 

Dave

[dazzed]

e30 head too small in combustion camber and intake ports only 30.0 mm motor will ping its nuts off and choke itself to death trying suck air through a pin hole only designed for L24E with dished pistons E31 ok tho nothing wrong with an E88 head either , why do you ask this question in the first place, please reply cheers dazzed

[pauly_adams]

i asked the question due to limited research at the time and i was able to get a E30 head with cam etc for $30. im currently looking for a new E88 head due to the previous owners stipping threds and snapping bolts off in it, i have removed a few of the bolts but there is still striped threds and cam needs atention so i thought i would just get a early E88 head to up the comp and replace my rooted head if you have any other info i should know or any tips etc feel free to pm me or post on the forum

 

cheers pauly