[MAG58's DOHC L28 Build Log]

Update: I went to Indy yesterday to see what's at the local Pull-a-Part, and found sitting there an M104 Merc Cylinder head. So for 40 bucks, I pulled it and nabbed all the goodies and brought them home to see if it fit. It did ... The bore spacing is DEAD ON and the head bolts are very close, in the small thousandths , which is doable.

 

That said, I took some pics of the head vs a stripped P79 I had just sitting around and threw it on the block to see what it would look like. Right now it's just sitting there, because I couldn't find a stock set of Z head bolts. It would actually bolt up using them, but I'd like to bore for the bigger Merc head bolts since they're massive.

 

...

 

Could you please tell me exactly which version of the M104 head you used please was it the

2.8 L M104.94x or the 3.2 L M104.99x

[L series dimensions - Stroke, Bore, Chamber cc's, etc]

To get a big bore stroker they usually bore the cylinder out somewhat, so to get a 3.0L you bore out to 0.60=1.5mm (2995cc) or upto 0.120=3mm for a 3.1L(3098cc):mrgreen:hope that helps

 

Well that's what my L engine calculator tells me anyhow.

[L6 heads; pics and descriptions]

Anybody heard of a N49 Head?

[NAPS L28 Intake Manifold with twin butterfly TB]

Hi there Nick, Bryan Here, Well my r30 looks alot like yours,hahaha, well it's red and black anyhow and is along way from anywhere at the moment but at least I got another 1 and thats got to be a good thing.

 

Am still tearing it down to repair and rebuild it,it's in a very sad state at the minute lots of rust to fix and the stock motor aint a runner in any stretch of the imagination, so hence the L32et going into it:flamedevi:burnout:

[NAPS L28 Intake Manifold with twin butterfly TB]

HR30 skylines came out with L series engines

DR30 skylines came out with FG series engines

xx31+ skylines came out with RB series engines

 

note that my PNV HR30 came with a L20ET

 

I was 1 of the founding 4 members of Skylinesdownunder & I have had several HR30 Skylines and all of mine have had the L20et or just the L20e

except for a 5 door hatch that I aquired which had a LD28 in it,

The DR30's came out with the FJ20DE and FJ20DET depending on the year and as metioned above the R31 came out with the RB20E an RB30E Mill in them.

 

In saying that I have also owned 2 Z cars also and the 280ZX I Had had the same twin choke throttlebody on it's intake but it wasn't a NAPS manifold as you have pictured above, and the fairlady had the same as the Skyline on it's L20E, which can be changed to 1 if an RB20 with a little modification to the RB20 throttlebody (they open the opposite way)

[Twin-cam L28 & Crossbred matching]

OK, Thanks for the history lesson Alan, It would seem that I have been misinformed in the past, I was only going on the limited knowledge I had and I got that from a Nissan Skyline website here in NZ

[ld 28 for stroker]

Hi there Newby here, So does anybody know anyone who has done this conversion and exactly what is involved in achieving it?

[Twin-cam L28 & Crossbred matching]

Hi, am hoping you might be able to help me, am looking at a Merc twin cam head that was manufactured by Mercedes-Benz to fit their 6 cylinder engine that was designed by the Prince Motor Company for Mercedes back in the late fifties(Nissan L series 6 cylinder engines) I think it was used in the sixties and seventies in the 280SL's and is compatable with the Nissan L series 6 cylinder engines, Has anyone else looked into this variation on a theme.

Can anyone shead a bit of light on this for me.