L28ET is dead! Going GTR!

[Guest Anonymous]

Hi.

 

Ok, just got back from the shop with my '83ZXT. BAD NEWS! #1 has no compression at all and apparently head valves above it are damaged as well. F#$K !!!

 

So, I am looking at nothing else but rebuild!

 

Now, discent rebuld will be ~$4000 or more. For the same $$$ I might as well put GTR motor in it. And, so I think I shall do. I already got TECH II so fuel/ignition managment should not be a big issue. And that is a big chunk! Also, since suspension is done it should handle as well.

 

What do you all think about it?

 

Please, help me with information! I need to know as much about the swap as possible. Who done it, what fits, what does not fit, etc.. ( Motor to trany, mouting points, clearances,....)

 

Best, if you know ANYONE ANYWHERE who had actually done this.

 

PLEASE HELP ME GET THE INFO!

 

Eugene '83ZXT

[jeromio]

What's a GTR motor?

[stony]

Great choice.... 400-500hp with stock tubos and motor.

 

im in the process of getting mine running. gonna run either 720cc or 1000cc injectors. but its gonna be real hard if your not in japan. motors are running in teh 7000-8000 range in teh states. good luck

 

stony

[jeromio]

What's a GTR motor?

[Modern Motorsports Ltd]

quote:

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Originally posted by jeromio:

What's a GTR motor?

---

 

Japanese Skyline GTR, kickass modern day version of the Datsun L series

[jeromio]

Oh, so that's the RB26DETT then?

 

Thanks.

[Guest Anonymous]

I think you'll find that the gtr drivetrain (whether rb25dt or rb26dtt) will cost you well over $4k alone, nevemind all the little things like a driveshaft and whatnot.

 

 

------------------

Morgan

http://z31.com/~morgan/s30

http://carfiche.com

[Guest Anonymous]

And while I'm at it...... the gtr drivetrain is unsuitable for RWD transplant because of the front diff and whatnot. You'll need a RWD trannsmission instead of the gtr AWD tranny. vg engines have same transmission bolt pattern as rb engines, so that's pretty easy. But the diff stuff built into the oil pan is a pita I bet.

[stony]

Since im pretty much done with teh rb-26 install heres some tips.

 

Youll have to make an oil pan or have the one on teh GTR (Aluminum Diff housing) cut and fabed into and oil pan. for teh z teh sump and oil picup have to be reversed which is a pain in teh ass ;>. as for motor mounts teh z31 fairlady z came with an optional rb-20 in it. teh oil pan and right motor mount get you a good starting point for teh mod. teh left mount will have to be made.

 

for transmissions anything but an r-33 GTS-T tranny would be a serious weak link in teh drivetrain. this mission is exactly teh same internals as teh gtr just not 4wd. If you dont have an r-200 lsd or better youll need to upgrade that.

 

Engine management.... SDS best way to go and also teh cheapest unless you have access to teh wireing diagrams for the gtr to figure how to hook up the stock ecu.

 

all in all i think its a really good upgrade. i dont think you could get a turbo L to 400+ HP fro even close to what i have into my car and mine will be a reliable daily driver at that. Bolt on a t-78 and upgrade injector and your looking at 500+ Hp at low booste settings.

 

BUT IF YOUR NOT IN JAPAN OR HAVE ACCESS TO ALL TEH JAPANESE PARTS YOULL NEED I DONT RECOMMEND THIS SWAP. I would say at least 50 % of teh stuff i was able to do really cheap wojld cost an arm and a leg in teh states becaus of teh lack of parts.

 

anywyas if your still interested here is a couple of links to my latest pics. http://albums.photopoint.com/j/View?u=1278065&a=9886019&p=33733466 http://albums.photopoint.com/j/View?u=1278065&a=9886019&p=33733465 http://albums.photopoint.com/j/View?u=1278065&a=9886019&p=33733463 http://albums.photopoint.com/j/View?u=1278065&a=9886019&p=33733462

 

oh yea this is a us spec Z teh motor fits fine ;>

 

stony

[stony]

oh yea dont for get about teh exhaust. twin turbo down pipe was really tricky. fit fine just gtr down pipe dosnt fit and has to be custom made to teh Z

 

stony