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Jehannum
 
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300ZX buildup. UPDATE! 75PSI ATTAINED YO!

So, after blowing my driver side turbo, and later finding that I'm down 50PSI of compression in cylinder 5, it's time to rebuild, bigger and better. This is going to be my build thread.

My goal is 450HP at 17PSI of boost for the street. Lower than that would be fine, higher than that would be fine, but I'm pretty well set on 17-18PSI of boost, as that's right in the sweet spot of the turbos I bought to replace the baked stockers.

As of today, the motor is outta there, after sunburning the ever-loving shit out of my legs, lots of quality time with an impact wrench, and lots of cursing.

I'll be going over sometime this week to start tearing it down to the longblock to drop off at Edwards Engines for a rebuild (they built the motor for my GTO, and I trust them). I'm hoping at this point that I'll only need new pistons and rings (and, of course, bearings). The rest of the rotating assembly is forged from the factory, and it'll all be inspected at the time of build.

I forgot my camera today, but here's some leading up to today:

Towing her away - had to take the fascia off just to get it up on the trailer, it's too low otherwise (lulz overspray).


Off to somewhere that I don't mind disassembling things (stuff gets stolen when I disassemble it in my driveway)


Driver side intercooler, shortly after puking oil all over the concrete:


Radiator out of the way:


Pretty much everything from the front and sides of the engine removed:


As she sat yesterday:


Reflecting on the pull, I'm never going to let a "little leak" in the power steering get this bad, ever again. The entire passenger side of the bay is covered in Dexron III (what the Nissan uses for power steering fluid). I'll get after it this week with a pressure washer and some degreaser.
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1992 300ZX: Not stock, 433 RWHP
1971 240Z: Toyota front brakes, 123 RWHP
1967 Pontiac GTO: not stock.
Old 04-26-2009, 09:06 PM Jehannum is offline  
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AtomicFire
 
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Old 04-26-2009, 09:10 PM AtomicFire is offline  
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[H]ard|On
tell me i is retarded and i will just potato
 
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Youre a New Mexican, eh?

Well gl with the build, that seems like a lot of power for that motor but I'm not up on the Nissans.
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Old 04-26-2009, 09:39 PM [H]ard|On is offline  
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Jehannum
 
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So, in the continuing saga of tearing the big bastard down...

ZOMG, empty engine bay!


Looks big, even on its own:


PS turbo, still good:


DS turbo, hey there's the problem...


The DS turbo had about 30 degrees of shaft play, and both the compressor and turbine wheels had been bent down and shredded.

As of today on the engine, I've got the DS turbo off, the plenum pulled, the fuel injectors off, the EGR removed, and all the coolant hoses off. I spent a solid half hour of quality time with an impact on the 27mm crank snout bolt, but made no headway. I also need to cut the studs on the PS turbo (and then pull and install new studs...), as the bolts on those are being utterly obstinate, and I can't get in at them with anything more than a pair of vice grips.
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Your powers are useless! I'm wearing my tin foil underwear!

1992 300ZX: Not stock, 433 RWHP
1971 240Z: Toyota front brakes, 123 RWHP
1967 Pontiac GTO: not stock.
Old 05-03-2009, 08:31 PM Jehannum is offline  
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[H]ard|On
tell me i is retarded and i will just potato
 
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All that oil.. I see.
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Old 05-03-2009, 10:16 PM [H]ard|On is offline  
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flshdncr
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i love those wheels.
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Old 05-04-2009, 12:21 AM flshdncr is offline  
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stupid dumbass
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Good luck! My friend owns a Z32 TT, I've seen the engine bay...it makes working on my evo seem like working on a bicycle...
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Old 05-04-2009, 12:29 AM stupid dumbass is offline  
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Grazehell
 
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Quote:
Originally Posted by [H]ard|On View Post
Youre a New Mexican, eh?

Well gl with the build, that seems like a lot of power for that motor but I'm not up on the Nissans.

450hp alot of power for the motor? You are definitely not a Nissan person indeed.
Old 05-04-2009, 06:15 AM Grazehell is offline  
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Lurker
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What did you do with your GT2554's?
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Old 05-04-2009, 12:47 PM Lurker is offline  
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Jehannum
 
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Quote:
Originally Posted by Lurker View Post
What did you do with your GT2554's?

I sold them off.
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1992 300ZX: Not stock, 433 RWHP
1971 240Z: Toyota front brakes, 123 RWHP
1967 Pontiac GTO: not stock.
Old 05-04-2009, 01:04 PM Jehannum is offline  
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Lurker
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Quote:
Originally Posted by Jehannum View Post
I sold them off.



If you plan to sell the GT2560's think of me.
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Old 05-04-2009, 01:57 PM Lurker is offline  
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Tex Arcana
I am a mean disrespectful person hiding anonymously and need an attitude adjustment.
 
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So, isn't this the place where it's so dangerous they won't let tourists out of their hotels after dark?? No wonder your shit gets stolen all the time...

And those are the strangest turbos I've ever seen...
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Old 05-04-2009, 04:30 PM Tex Arcana is offline  
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Jehannum
 
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Quote:
Originally Posted by Tex Arcana View Post
So, isn't this the place where it's so dangerous they won't let tourists out of their hotels after dark?? No wonder your shit gets stolen all the time...

And those are the strangest turbos I've ever seen...

They're little tiny things, with internal wastegates. I intend to get a picture of them next weekend next to the GT28R (GT2560R) turbos that are going in in their stead, which also aren't exactly huge.

My shit gets stolen because I haven't anywhere to work but the driveway.
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Your powers are useless! I'm wearing my tin foil underwear!

1992 300ZX: Not stock, 433 RWHP
1971 240Z: Toyota front brakes, 123 RWHP
1967 Pontiac GTO: not stock.
Old 05-04-2009, 06:24 PM Jehannum is offline  
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colinshark
 
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Nice BBS RS.



edit: they are probably my offset and bolt pattern.

I want them.
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Last edited by colinshark; 05-04-2009 at 07:26 PM..
Old 05-04-2009, 07:13 PM colinshark is offline  
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Jehannum
 
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Now, back to big bastard. This is last weekend's progress, plus two bonus pics.

These pictures make me giggle:




The block is almost totally stripped:






It would be in machine shop jail already, save for this:


Whether as a result of heat or simply an assembler with the strength of an ape, the head bolts are in there really tightly. After about 2 minutes of my full weight on a 5' breaker bar, the allen driver snapped right in half. Good thing it's a Craftsman,

Old vs. New:


Those GT2860R's are a lot bigger than the T22s they're replacing.
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Your powers are useless! I'm wearing my tin foil underwear!

1992 300ZX: Not stock, 433 RWHP
1971 240Z: Toyota front brakes, 123 RWHP
1967 Pontiac GTO: not stock.
Old 05-13-2009, 06:19 AM Jehannum is offline  
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