L28E to L28et

[pauly_adams]

well i decided after a blown head gasket to bring all the goodies out of the shed and start bolting them on, so to start. i was scrolling through the parts system at work for a head gasket and much to my excitement i also found that i could get a head shim so i orded it thinking it would be much the same as all the others at 0.2mm, it turns out i was wrong it was 1.5mm after it was compressed so after a quick inspection of my internals of the engine it turns out they are all brand new not just second hand, it has new rods bearing and 1.5mm oversized pistons and to top it all of the block has beautiful hone marks in there. so after many hours of wrestling with the engine i got everything bolted on for the first start up much to my amazement i turned the key and it ran first turn of the starter. so the current setup which is not ideal and will be fixed this week coming is as follows,

 

fully rebuilt N42  head that has mild porting

fully rebuilt F54 block with new rods and deep dished 1.5mm oversized pistons

has a L28E dissy set to 5 degrees BTDC

rising rate FPR running 40psi stock and 60psi at boost

standed airflow meter

standed injectors (these will be replaced first thing in the morning with 280cc turbo ones)

turbo manifold is a F54 and a stock 280zx turbo

 

what will be going in over the next 2 weeks

z31 turbo ecu, wiring and distributor

greddy ultimate ecu (piggyback system)

map sensor for the greddy ecu so i dont need a maf sensor

wideband O2

550cc sard injectors brand new top feed

and to top it all off it will be running a Holset hx35w turbo from a cummins truck 

 

here is a small video of its first run

 

cheers pauly

 

[pauly_adams]

sorry about the crappy night pics.

[Scando]

Hi Pauly, you're going to hate me for telling you this now but on 98 fuel the standard naturally aspirated compression of 8.2:1 would be better without the decompression plate.  Even more so once you switch to the bigger turbo so there's not as much restriction on the exhaust side.

 

Have you welded the timing weights in the dizzy?  If so then you should be able to bump up the timing and liven it up a bit.

 

Great to hear it's up and running 

[pauly_adams]

nope i didnt weld the weights as the dissy will be getting removed anyway, the z31 dissy runs the opticle sensor so with the greddy ecu i can control both timing and fuel as well as not needing a AFM and self tuning with the wideband, im not willing to push it just yet not until i get everything on and set up correctly, as for compression its estimated at 8:1 with the combination of the gaskets and the larger cc of the pistons. im not after a masive power, the engine will most likely never get boosted past 14psi , i always run premium 98 in all my cars so fuel is not so much the issue. power that im after is about 350hp at the rear which with the setup going in is more then achiveible.  i may change the head to a P90 but with mild porting the N42 flows realy well, im maily shooting for nice driveability and reliability thats why i have gone a bit overkill with the ecu, injectors and turbo. i will keep you posted with the z31 dizzy and ecu conversion its looking to be quite strait forward with only needing to make a bush up for the dissy.

 

cheers pauly