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2jz NA 300hp

Started by _rb3torana_ , Oct 21 2016 06:02 PM

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23 replies to this topic

#1 _rb3torana_

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Posted 21 October 2016 - 06:02 PM

Hi, I realize this is not a holden engine but it is going in an LX torana so I feel its appropriate. Im just wondering if my goals are achievable. The engine is as follows, 2jz 10:1 compression, mildly ported head ( 240ish cfm ), 253@50 cams, good custom intake plenum and exhaust. A340e auto, 4000rpm stall, 4.86 or 5.13 gears. I figure to run 12's @ 108ish mph in my car ( roughly 2900lbs ) its going to need near 300hp. Seem achievable? Cheers

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#2 Lima31

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Name:Lee
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Posted 21 October 2016 - 11:17 PM

300 fwhp will be $$$ but not impossible.

Why not the turbo route, I reckon the same or less money, plenty of options, and room to improve 400 whp++ for relatively less cost?

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#3 N/A-PWR

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Name:Dave I
Location:Wooroloo, 65km's East of Perth
Car:'1969' LC RAT TORANA
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Posted 21 October 2016 - 11:25 PM

Got the right equipment to have any power you need.

Is said the 2jz is a bolt in 1000hp opportunity.

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#4 _LS1 Taxi_

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Posted 21 October 2016 - 11:28 PM

2900lbs LX including fluids and driver?

How'd you reach this figure?

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#5 _rb3torana_

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Posted 22 October 2016 - 07:21 AM

Yeah actually already been down the turbo/ twincharge 1jz route lol. best it ran was 9.6@141mph. Obviously the car is not teched etc so I have to slow it down anyways. So I thought the car is setup for a JZ to why not an NA 2jz build. I figure the car should weigh around 29-3000lbs as they are supposed to start at 1180kg + driver and probably 100lbs of extra weight. Heres a video of the previous setup for interest sake.

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#6 _Bomber Watson_

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Posted 22 October 2016 - 09:47 PM

That is frOcking sick.

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#7 _Lazarus_

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Posted 12 November 2016 - 06:53 AM

https://www.efihardw...rottle-Body-Kit

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#8 _rb3torana_

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Posted 01 January 2017 - 01:47 PM

I thought I would update on this, got it running and took it to the drags. Ended up running a best of [email protected]. With more converter and tyres it would run 12's easy enough. Lol it does nothing till 5000rpm and the converter only goes to 3500.

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#9 madtoranajzedded

Sir ask alot

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Name:Maz
Location:Southern Tasmania
Car:72 LJ SL SEDAN.
Joined: 30-September 13

Posted 01 January 2017 - 05:08 PM

Keen to see nxt runs coming.im amazed that
In a few other forums they only seem to be
extracting 350 hp out of these beasts,that will
near quite easily hold together with 700 with
Stock internals.

Theres a guy on here with a tad over 400
With a jz head on the trusty hold 6.
it wouldnt be as reliable as the j.but with a
head flowing 240cfm why are these donks not producing more hp na...keen to know

Cheers maz

Edited by madtoranajzedded, 01 January 2017 - 05:09 PM.

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#10 _duggan208_

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Posted 02 January 2017 - 12:20 AM

Its interesting to see one of those engines that does not rely a turbo. Surely it would be more reliable than the old red motor. Have you thought about multi throttle bodies?

regards

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#11 _rb3torana_

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Posted 02 January 2017 - 10:32 AM

Yeah I have though of Individual throttle bodies but for drag racing I really don't think its worth the little extra response. I'd love to know what the fastest NA 2jz powered sedan is. The fastest I can find is in the 13's lol. The heads on these still have got nothing in the likes of bmw etc. So Im guessing thats one of the reasons they dont make more power and the 1:1 rocker ratio ( shim bucket ). Id like to see that 400hp hold 6 in a car and put on the track, even the fastest holden 6 sedan is still only making around 350hp. Going by the weight this thing is making around 280-290hp. Cheers

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#12 _duggan208_

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Posted 02 January 2017 - 11:23 PM

It just goes to show how effective a turbo is. It seems that with out a turbo most 3 litre (200 CID), including the little Holden, engines are good for around 300 to 350 HP NA. Real hot ones around 400 HP, most likely built by a professional engine builder. i know a few circuit Holden 6s around 320 to 350, 9 port head. In Street Machine Dec 2016, Hi-tec engine builders have a Jzed headed red pumping out 450 HP NA. I think the BMW M3 race engines are around that as well. There's always the feared 265 hemi lurking around.

Sounds like you have a good challenge on your hands to get the 2jz to crack 12s. I think there's one around here where i live ,NA, it sounds fantastic like an exotic Euro sports car. it might be a Soarer ,however its spelt, every time i hear it coming i try to see just what it is.

Regards

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#13 _Bomber Watson_

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Posted 03 January 2017 - 07:42 AM

If its a soarass its probably 1j.

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#14 _Lazarus_

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Posted 03 January 2017 - 08:27 AM

Would be fun to take a 2jz-gte, throw away the turbos and see how much nitrous it could take.

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#15 madtoranajzedded

Sir ask alot

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Name:Maz
Location:Southern Tasmania
Car:72 LJ SL SEDAN.
Joined: 30-September 13

Posted 03 January 2017 - 01:20 PM

I like your thinking Mark

To get to the 600-650 figure i wanted would
b like 250-300 shot of nos.

I dont have the faintest what could b thrown
at it..

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#16 _rb3torana_

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Posted 11 January 2017 - 07:30 PM

Well its currently making 285hp ( 13.3 106mph @ 3000lb ). https://www.facebook...74982152764395/

Got a bigger converter on the way:). Cheers

Edited by rb3torana, 11 January 2017 - 07:31 PM.

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#17 warrenm

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Posted 11 January 2017 - 09:43 PM

Running 106mph, there's a 12 in it. :spoton:

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#18 _rb3torana_

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Posted 11 January 2017 - 10:02 PM

Yeah should do considering the converter is going from 3600 to 5500-6000, reving it to 8500 so it kinda needs that much ☺ Cheers

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#19 _duggan208_

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Posted 11 January 2017 - 10:38 PM

I'll bet it sounds exceptionally good.

regards

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#20 warrenm

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Posted 12 January 2017 - 04:43 PM

What's the car 60' times?

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#21 _rb3torana_

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Posted 12 January 2017 - 08:26 PM

2.13 was the best which is just awesome lol. It should go 1.7's with a converter hopefully. I measured my secondary pipe length which are 2.5" and 13" and 17" long then to a x-pipe to twin 2.5 out the back. Im thinking I might lengthen them a bit.