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Location:
sunny coast, qld
Registered:
October 2002
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has anybody rebuilt a 1jz?
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Mon, 31 May 2004 03:42
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hello all,
if worst comes to worst I may have a big problem and require a rebuild. I did a search and all I got was the 1.5jz stuff. I am not really interested in doing that as 1. 2jz blocks aren't very easy to come by and 2. they are not very cheap.
If it is a problem in the bottome end, do you think it would be better to buy new bits and rebuild it or buy second hand motor and put the 2 together to make 1 good motor, or just drop in another motor.
My motor is pretty stock except some things have been changed like no PS and the alternator has been relocated and no clutch fan.
If it is not the bottom end problem then it is most likely a head problem in which case, I would probably just get the head done and new bits put in.
what do you think?
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Location:
sunny coast, qld
Registered:
October 2002
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Re: has anybody rebuilt a 1jz?
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Mon, 31 May 2004 10:09
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nobody? 
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Location:
Brisbane
Registered:
October 2002
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Re: has anybody rebuilt a 1jz?
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Mon, 31 May 2004 10:21
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have u actually found out the problem, was it in the front end or is it a big end
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Location:
sunny coast, qld
Registered:
October 2002
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Re: has anybody rebuilt a 1jz?
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Mon, 31 May 2004 11:11
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haven't done the leak down test yet as I need a compressor. If it is the head then I will get it ported and new bits and if it is the block then I am seriously contemplating turning the car into a drag car as that is all it is good for anyhow. These damn street legal rules are just a hinderance  However, if that was the case it would be a very long upgrade path as I am on a tight budget. hmmm?
I shouldn't have got those twin pipes and boost controller
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Location:
sunny coast, qld
Registered:
October 2002
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Re: has anybody rebuilt a 1jz?
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Mon, 31 May 2004 11:12
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oh yeah, don't think it is the big end as it was screaching like hell and then stopped all of a sudden. Checked the oil and there are no bits of bearings in there. Thinking maybe bent rod or dead valve spring. Will find out soon I guess.
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Location:
sunny coast, qld
Registered:
October 2002
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Re: has anybody rebuilt a 1jz?
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Thu, 03 June 2004 02:53
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OK so can I assume that nobody has ever rebuilt a 1jz-gte? I know these engines are supposed to be pretty strong but some people have had to have broken some?
Mine has a problem and I am only making about 330ish HP?
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Location:
Sydney
Registered:
May 2002
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Re: has anybody rebuilt a 1jz?
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Thu, 03 June 2004 03:15
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I've been following these engines for some 6 years and owned 3 in the last 4 years and I've only heard of 1 single 1JZ being rebuilt in WA and fitted in VIC and the details were very sketchy.
The main reason is cost - a good bare 1JZ engine can be had for under $800 - a full rebuild gasket kit on it's own is over $500 without any parts, machining or labour - the maths dictate it's easier/cheaper to replace the engine than rebuild it ; at least until demand exceeds supply...
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Location:
sunny coast, qld
Registered:
October 2002
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Re: has anybody rebuilt a 1jz?
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Thu, 03 June 2004 03:22
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hmm, well if that is the case then I may end up going the 1.5JZ route after all. I knew that not many people would have blown the internals but I thought that somebody may have wanted to get a "freshly" rebuilt engine rather than chancing another import engine. That was my line of thinking anyway
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Location:
Sydney
Registered:
March 2003
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Location:
Brisbane
Registered:
October 2002
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Re: has anybody rebuilt a 1jz?
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Thu, 03 June 2004 08:21
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i can hook u up with cheap parts chris, and maybe cheap labour on getting the head done
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Location:
On your mum!
Registered:
May 2002
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Re: has anybody rebuilt a 1jz?
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Thu, 03 June 2004 08:31
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Chris - I belive that Jamie of JT Autogas in Cardiff NSW may have built his one - not entirely sure though
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Club Member
Location:
sydney
Registered:
May 2002
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Re: has anybody rebuilt a 1jz?
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Thu, 03 June 2004 08:39
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rebuilding any engine is all pretty much the same deal, is there something specific your trying to find out??
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Location:
nz
Registered:
June 2004
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Re: has anybody rebuilt a 1jz?
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Thu, 03 June 2004 10:43
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Yes i have and what it cost me try and find another engine it will be a lot cheaper.
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Location:
I wanna go Hawaiiiiii.......
Registered:
November 2003
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Re: has anybody rebuilt a 1jz?
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Thu, 03 June 2004 11:43
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No, I can confirm that the JT Racing 1j has never been opened.
I can also confirm it has more HP than anyone has a right to...
it is making in excess of 500rwhp@25 psi.
Jamie is about to start a rebuild though, the usual gear, but mechanical fuel pumps, twin gt40's, 1800cc injectors and Alcohol fuel.
I dare you to doubt him, hehe
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Location:
Brisbane
Registered:
October 2002
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Re: has anybody rebuilt a 1jz?
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Thu, 03 June 2004 11:49
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| Special Ed wrote on Thu, 03 June 2004 21:43 |
I can also confirm it has more HP than anyone has a right to...
it is making in excess of 500rwhp@25 psi.
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ouch, the subzero skyline makes 900RWHP with stock internals
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I supported Toymods
Location:
I renounced punctuation
Registered:
May 2002
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Re: has anybody rebuilt a 1jz?
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Thu, 03 June 2004 11:50
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I am rebuilding a 2JZGE. Longer forged rods, higher compression forged pistons, balanced, ported head, big cams, shim under bucket conversion, blah, blah, blah....But you know, it's NA and that's what you have to do to get power.
But your cheapest bet is to just buy a bare engine sans turbos and swap everything over. You should be able to find one for less than $1000.
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Location:
I wanna go Hawaiiiiii.......
Registered:
November 2003
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Re: has anybody rebuilt a 1jz?
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Thu, 03 June 2004 12:06
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| Mr DOHC wrote on Thu, 03 June 2004 21:49 |
ouch, the subzero skyline makes 900RWHP with stock internals
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is this the r33 gts-t ?
900rwhp from a stock internals rb25 ? you gotta be kidding !
FWIW - the JT ute has dyno charts for 460rwhp @ 19psi and optimax. Now been road tuned at 25 psi ( no traction on dyno).
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Location:
sunny coast, qld
Registered:
October 2002
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Re: has anybody rebuilt a 1jz?
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Thu, 03 June 2004 12:56
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sorry to get everyone excited but it looks like I don't need a rebuild after all
But I am sure this info. will be of great use to many people when they use the search button
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Location:
Brisbane
Registered:
October 2002
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Re: has anybody rebuilt a 1jz?
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Fri, 04 June 2004 08:15
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| Special Ed wrote on Thu, 03 June 2004 22:06 |
| Mr DOHC wrote on Thu, 03 June 2004 21:49 |
ouch, the subzero skyline makes 900RWHP with stock internals
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is this the r33 gts-t ?
900rwhp from a stock internals rb25 ? you gotta be kidding !
FWIW - the JT ute has dyno charts for 460rwhp @ 19psi and optimax. Now been road tuned at 25 psi ( no traction on dyno).
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dear god i'm a fuck wit  , i meant the subzero SUPRA, JZA80, i was reading a thread on a skyline on another forum as the same time 
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Location:
sunny coast, qld
Registered:
October 2002
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Re: has anybody rebuilt a 1jz?
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Fri, 04 June 2004 20:04
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On www.supraforums.com.au it said that supra made 780rwhp? I thought it was 880 actually. Anyway, we know it is a lot
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