View Full Version : stock internals resistance
ShaunW.
01-16-2013, 09:51 AM
hey, i'm new on the forum. I have a 1998 240sx . I'm actualy looking for a sr20det for my car. I've found a builded sr20 with stock internal except for the cams. It as:
- gt3076r 0.48 A/R
- emusa external wastegate 38mm
- Enjuku stainless headers equal lenght wrapped
- electronic boost controler blitz SBC (set at 15psi)
- z32 maf
- 740cc hks injectors
- cams tomei 256° 11.5 lift
- JWT tuned ecu
- custom intake
- intercooler 3"
I did search but did not found anything. I would like to know if the stock internals will hold up are blow up. Thx alot! :)
Kingtal0n
01-16-2013, 06:34 PM
http://i23.photobucket.com/albums/b378/draglarry/life-expectancy.jpg
this is the best thing i can give you
Croustibat
01-17-2013, 03:17 AM
Kingtal0n strikes again. I really wonder where he gets all those fancy ideas / graphs though.
@op> "emusa something" = dont buy it. emusa is just chinese crap (supposedly they have "quality standards in their USA warehouse", but it looks like every emusa parts i got has not been inspected - or actually has been, and was sold because there was no chance i'd send them back)
Internals dont have a power limit (kind of ... you wont push 1200HP of course), it all goes down to the tune, usage, and rebuild quality. Tight bearing tolerances and a safe mapping will kill your gearbox long before the stock internals give up. I have seen 400++HP SR20 and CA18s with stock internals living a long life, being thrashed on tracks. I also have seen rebuild block with forged pistons and rods die from knock and too high EGTs caused by using a wrong tune...
Loose or used bearings, or anything that is not a custom tune on a dyno, with some big turbo like that one and counterfeit wastegate though ... i would not bet on its life expectancy.
cotbu
01-17-2013, 03:28 AM
Kingtal0n strikes again. I really wonder where he gets all those fancy ideas / graphs though.I agree with
http://www.croustibat.fr/wp-content/themes/bbxdesert/images/logo-croustibat.png
http://i18.photobucket.com/albums/b142/COTBU/life-expectancycopy_zps1c52d3b5.jpg
codyace
01-17-2013, 11:07 PM
Hey guys, the SR marking I agree with...it's the 2JZ limit that I do not.
Turbonicsperformance
01-19-2013, 09:59 PM
very much so. There is a 100% never opened 2jzgte in tampa making 800 whp daily driven. seen tons of 600 hp+ stock 2js also my buddy dane make 630 whp in his s14 2j swapped stock internals studded head
STR8E180
01-19-2013, 10:03 PM
from a sr20 with a standard bottom end the most we have made is 400kw/540hp this was done with E85
at 35psi the standard head bolts will start to stretch causing the cylinder head to lift of the block resulting in a split head gasket
i wouldnt recommend trying to make this sort of power level on 91 octane fuel ( or what ever you guys got over there ) its only safe on E85
codyace
01-20-2013, 01:17 PM
very much so. There is a 100% never opened 2jzgte in tampa making 800 whp daily driven. seen tons of 600 hp+ stock 2js also my buddy dane make 630 whp in his s14 2j swapped stock internals studded head
Agreeing or disagreeing with me?
I guess my point is that I'd move the 'good' line further to the right in regard to safe power level of the 2jZ :D
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