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Limits of Built Sr20DET - Hardtuned.net

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Limits of Built Sr20DET 

17 replies to this topic

#1 Nathan Mazzeo

  • Joined:19-May 13

Posted 19 May 2013 - 08:14 PM

Hi All, I've just picked up a 95model series1 aussie 200sx. Previous owner has done all the work for me and wanted a "safe" tune. It has a full forged and built SR20 bottom end, heads ported polished with cams and springs running a gt28 on 17psi and apexi power fc. the dyno sheet says I have close to 300kw in 4th gear. Just wanting to know what are the limits with out blowing things up? hw much boost I can run and is this normal figures out of a built sr20. I should add it has a 300zx gear box for strength. I need to be prepared for the new HSV coming out with 430KW haha not a holden fan

#2 greens14

  • Joined:28-July 08
  • Location:Australia VIC

Posted 19 May 2013 - 08:43 PM

Nice pick up bro.
Those numbers don't really add up though.
A T28 will not make anywere near 300kw.
Are you sure it's not 300HP? Which equates to around 220kw which is around the max a factory t28 will make.
Even a Disco 2860rs is getting close to its max depending on the rear housing.

Edited by greens14, 19 May 2013 - 08:47 PM.


#3 blingcommander

  • Joined:05-October 06
  • Location:Japan
  • Car:Scooty-Puff Jr.

Posted 19 May 2013 - 09:30 PM

define full forged.

as above with the power.

#4 Bloke

  • Joined:21-February 04
  • Location:Australia NSW

Posted 19 May 2013 - 09:45 PM

Keep adding boost til it pings, then back it off a touch.

#5 brent47

  • Joined:29-January 04
  • Location:Australia SA
  • Car:jdm 15

Posted 19 May 2013 - 09:55 PM

Any proof for the engines contents supplied with sale.??
If there's any GT28 framed turbo hanging off the side i highly doubt the sheet matches to whats on the car at the moment.

#6 STR8E180

  • Joined:30-April 03
  • Location:Australia NSW
  • Car:GTR R34 V-SPEC

Posted 19 May 2013 - 10:00 PM

Big question is
What parts are used and who put it together
Not all rebuilds are the same With experience comes knowledge

#7 R32GTRS

  • Joined:24-August 09
  • Location:Australia SA
  • Car:RB25 R32gtst

Posted 20 May 2013 - 09:47 AM

lol nothing suss
with this stuff basically treat it like any other engine, unless you're going to pull it down to check it, you really have no idea about it whats in it or build quality, kents talk alot of shit.

Edited by R32GTRS, 20 May 2013 - 09:53 AM.


#8 bumblebee

  • Joined:26-March 09
  • Location:Australia QLD
  • Car:200sx s1

Posted 20 May 2013 - 12:21 PM

Be careful some people talk crap to make a sale sound better. only way is like r32gtrs said is pull it down to see what it has. A mate got burned like that he got this car that the owner said it had full forged internals after cranking up the power it blew up on the dyno revealing it was full of stock internals.

#9 Dose Pipe Sutututu

  • Joined:19-January 05
  • Location:Australia NSW
  • Car:Boat Sutututuutu

Posted 20 May 2013 - 12:56 PM

Full forged, I assume forged crank too?
or just forged pistons and stock crank?

People always say "oh mah gord bro, my motor izz fully forged"

#10 tolkaNo

  • Joined:25-August 09
  • Location:Australia SA
  • Car:Nissan 180SX

Posted 20 May 2013 - 01:13 PM

close to 300kw at 17 psi safe tune on "gt28" turbo? ok

what the hell is gt28? could mean anything

#11 Nathan Mazzeo

  • Joined:19-May 13

Posted 20 May 2013 - 01:35 PM

Thanks everyone for comments. I'm going to brisbane tuning for it to be checked out and tuned. I do have tax invoice for all engine work which was carried out by CMR at capalaba. I will post on how it all goes. Thanks again guys!

#12 Traditional

  • Joined:14-May 12
  • Location:Australia QLD
  • Car:S15 Spec-S JDM

Posted 20 May 2013 - 02:21 PM

Tried giving CMR a call? They might have information if you provide the block number (maybe not but there's a chance)

#13 wrx_my00

  • Joined:07-June 07
  • Location:Australia NSW
  • Car:S14

Posted 20 May 2013 - 02:21 PM

Yeah ill be interested to see the results. Im just putting an s14 together with a new motor would be happy to see 240Kw

#14 Stilvia

  • Joined:29-May 08
  • Location:Australia SA
  • Car:S13

Posted 20 May 2013 - 05:26 PM

I've seen quite a few 2871s get close to the 300kw mark

#15 brent47

  • Joined:29-January 04
  • Location:Australia SA
  • Car:jdm 15

Posted 20 May 2013 - 05:51 PM

With a .86 housing, E85 or other high performance fueling and a slightly happy dyno it is certainly in its range, but not comfortably or not as I know off actually hitting 300

#16 Bloke

  • Joined:21-February 04
  • Location:Australia NSW

Posted 20 May 2013 - 06:12 PM

Plenty of stock-internal'd SRs have hit the 300kwatw mark over the years, but certainly not with any T2-based turbo.

#17 brent47

  • Joined:29-January 04
  • Location:Australia SA
  • Car:jdm 15

Posted 20 May 2013 - 06:23 PM

Yep agreed, i just cant see it with with anything other than a 30" +

#18 - Donny -

  • Joined:01-November 04
  • Location:Australia VIC
  • Car:S13,S14.5,S15,VYss

Posted 24 May 2013 - 12:08 AM

View PostJohnnilicte, on 20 May 2013 - 12:56 PM, said:

Full forged, I assume forged crank too?
or just forged pistons and stock crank?

People always say "oh mah gord bro, my motor izz fully forged"

stock crank is forged, most aftermarket cranks are billet some are forged.
when people say fully forged it means it has forged pistons and rods as thats about the only parts in the sr that are forged, everything else is casted, billet or drawn.

t28 wont hit 300kw, only happy dyno and a laggy set up with e85 will get close to 300kw with a t28, would be a piece of shit to drive, i dare say figures are in correct or the turbo is larger than expected.





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