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James Tims
TryHard
Vic
TT - Marlew Special

Posts: 282
Reg: 11-2008

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Sunday, August 07, 2011 - 08:27 pm, by:  James Tims (Timzy) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Hi guys,

Just wondering approx how much HP the 1jz can take on stock internals & if letting it rev out to 8000rpm is a really bad thing for these engines or not, I've only had my 1jz for a couple of months so getting to know these engines in and out :-)
Dan McColl
Goo Roo
Victoria (The Nazi State)
Pretty Red Thing and The Black Beast

Posts: 2969
Reg: 07-2005

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Sunday, August 07, 2011 - 10:56 pm, by:  Dan McColl (Hoon) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

How long do you want it to last??

The answer to this is the inverse of how hard you can rev it and how much power it will take.

ie, If you want it to last a long time, then modest rpm's and power levels are the go. If you don't mind changing the engine every week, then go nuts.
Adrian McGuire
TryHard
Queensland
soarer 2.5 turbo

Posts: 487
Reg: 12-2010

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Monday, August 08, 2011 - 07:05 am, by:  Adrian McGuire (Adro) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

thats what a rev limiter is for. hey Dan, how ong to swap an engine out?
Blake Gloyn
DieHard
manawatu
soarer JZZ30 TT

Posts: 673
Reg: 02-2006

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Thursday, August 11, 2011 - 06:36 pm, by:  Blake Gloyn (Blakenz) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Hi James, i think around 400rwkw is a safe maximum number to run on a 'stock internal' engine that is in reasonably good nick. At these power levels though, the tuning has to be spot on. Some guys run them to 8000rpm stock, but i'm much more comfortable at having a redline at say , 7500 rpm. I just think it is asking for trouble to vastly increase horsepower AND then go and increase revs by heaps too. Too many guys thrash a twenty year old motor and then wonder why it has run a bearing.
Adrian McGuire
TryHard
Queensland
soarer 2.5 turbo

Posts: 488
Reg: 12-2010

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Thursday, August 11, 2011 - 06:49 pm, by:  Adrian McGuire (Adro) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

There are heaps of 6-800 hp 1jz's in the states that are running standard internals. It all depends hw far you want to wind the boost up before she goes bang.
James Tims
TryHard
Vic
TT - Marlew Special

Posts: 286
Reg: 11-2008

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Thursday, August 11, 2011 - 07:49 pm, by:  James Tims (Timzy) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Sweet as thanks heaps for the feedback guys! I'm pretty sure mine revs out to 8000rpm but that's only if I keep it in first :-) I think that has something to do with the Blitz Access ECU.
Steven Soknacki
Tinkerer
Ontario
'92 SC400 and '94 GT-T Limited

Posts: 98
Reg: 07-2006

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Saturday, August 13, 2011 - 01:56 am, by:  Steven Soknacki (Sc_coupe) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Yes, it does. I have the Blitz unit as well and it removes the rev limiter. However, I find the power really dies off after redline so why not just shift at 7000 when flogging?
James Tims
TryHard
Vic
TT - Marlew Special

Posts: 288
Reg: 11-2008

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Saturday, August 13, 2011 - 08:02 am, by:  James Tims (Timzy) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

I do this is only when I first got it to see what it was really capable of! Definitely not worth revving past 7000!
Gary Poloskei
DieHard
A.C.T
Soarer JZZ30

Posts: 839
Reg: 01-2008

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Friday, November 04, 2011 - 03:45 pm, by:  Gary Poloskei (Mikrucio) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

it will do 500hp all day everyday.
Jay Asghari
TryHard
Victoria
'94 UZZ31 GTL, '94 TT, '96 UZZ32

Posts: 101
Reg: 01-2010

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Saturday, December 10, 2011 - 08:30 am, by:  Jay Asghari (8pack) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

http://etuner.com.au/smf/index.php/topic,26.0.html

Read this.

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