N42 Head

[george.bryant]

What motor is the N42 off?

[SteveL]

What motor is the N42 off?

<{POST_SNAPBACK}>

L28 - probably the most common L28 head in Oz.

[george.bryant]

Whats on L20et?

[SteveL]

Whats on L20et?

<{POST_SNAPBACK}>

L-series 2L 6cyl turbo, also fuel injected.

[george.bryant]

yeah i own a l20et and i know that. lol. i was asking what head is on the l20et? cause i have a spare one and i'm trying to identify what i can do to it

[SteveL]

yeah i own a l20et and i know that. lol. i was asking what head is on the l20et? cause i have a spare one and i'm trying to identify what i can do to it

<{POST_SNAPBACK}>

Sorry...didn't have my glasses on when I read that

Never seen one that close, although almost bought a Fairlady Z with one in it once. I read somewhere they had a unique head, something like 'OS' or '05' as the identifier. Don't kow any specs.

[george.bryant]

Could it be a E31 or E88? or a P79/P90/P90a

Edited December 26, 2005 by george.bryant

[george.bryant]

Ok, just went out and had alook at the head. Its a 05L

[Brycey]

the N42 heads are off the F54 L28 block or the N42 L28 block , i just had my N42 head rebuilt

Edited January 8, 2006 by Brycey

[stagefumer11]

CAn it be used on a l20et ? raises the compression to 7.9 i think ?

[Brycey]

CAn it be used on a l20et ? raises the compression to 7.9 i think ?

<{POST_SNAPBACK}>

not entirely sure to tel you the truth, i havnt experimented quite that far yet

but maybe this site will help http://en.wikipedia.org/wiki/Nissan_L_engine

edit: by the way, the N42 head a highly desireable and efficient all-round head for the L28. altho its not the best, as SteveL said they are probably the most popular for price and working order.

also if you want to identify what head is on the L20ET then have a look around the spark plug area where the head meets the block ( from memory) and there should be a imprint of what the head is called. the numbers may be located on the opposite side tho, just have a look around it and im sure you will find what your looking for

Edited January 8, 2006 by Brycey

[george.bryant]

its a 05l head, and stagefumer knows that also.

[discopotato03]

I would tread wearily with large valve heads on L20a's , my references show them as having 78mm bores and 38+33mm valves so 71mm across them . Late L24's use 42+35mm (77 across) in 83mm bore . L28's used 44+35mm (79 across) which is wider than the L20's bore even if they were touching in between .

Cheers A .

[R30kc70UGE]

still should be sweet to use a L28 head on l24 shouldnt it!

[discopotato03]

I'd be laying the L24 head gasket on it just to be sure . You will find with the L4 and 6's helping the exhaust side works well . Unless you intend to use only high revs the 44mm inlets will cost you gas speed and torque . The first (early 81) MR30's got the best head and the large exhaust valves from memory - best chamber design sort of like L16 SSS 219 castings . I would use it over any L6 head . You can change valves but not chambers , welding is not cost effective .

[Blue Dynamite]

you can get them off the TI mr30 skylines i think. they're not too different from the N47heads. only potential wise i think. i atleast know you can get N47 heads off mr30skylines because i did.