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Author Topic: Engines... the Z28NET  (Read 2249 times)

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GmasterT

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Engines... the Z28NET
« on: 15 June 2011, 08:53:49 »

I am looking into engine options for next season as I would love to use my old 3.2 and so far the 1JZ toyota engine is winning.

However, whats the GM 2.8T like and has anyone fitted one into a 'mega? And is it just mapping differences between the NET and NEL?

 :y
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andyc

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Re: Engines... the Z28NET
« Reply #1 on: 15 June 2011, 09:02:14 »

The 28 turbo is FWD only so you would need to find a gearbox that would fit as well as a clutch system.

As far as i can make out you would also need to make a cradle to carry the motor as there are no engine mount points in the block that could be used for RWD mounting.

Once thats done then you need to re-route the turbo and pipe work as the turbo sits above the gearbox on the FWD cars

Andt then you will have the issue of the cooling system as the engine managment as its a Can Bus system

Not saying it can't be done but alot of work and money

Andy
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Marks DTM Calib

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Re: Engines... the Z28NET
« Reply #2 on: 15 June 2011, 09:15:24 »

A big job but not impossible.

This power plant is a GM global V6 and variants of it are available in rear wheel drive units else where (e.g. the US) so gearboxes and mounts etc could be sourced.

You would need to move or change the twin scroll turbo as that sits above the box (twin turbo may be do able).

A concern would be the engine width as its a traditional 60 deg unit so is likely to be wider than the 3.2 54 deg job you have.

Custom engine management system would be required (or a clever lash up of bits to get teh CAN working)
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2woody

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Re: Engines... the Z28NET
« Reply #3 on: 15 June 2011, 09:54:26 »

you should be clear that it's not the same engine - just another V6 that GM do of around the same capacity.

bellhousing pattern could be an issue ?

have you thought about the Saab turbo engine ? crazy horsepower available and it will bolt to the gearbox you already have.
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GmasterT

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Re: Engines... the Z28NET
« Reply #4 on: 15 June 2011, 13:51:18 »

I knew it was a completely different block/engine. I would have ran a different turbo(s) and most likley an EC-1 aftermarket ECU.

Was just a thought, whatever I put in there will require custom work etc as the 3.2 wont give me the abusable power vs reliabilty I need and the 2.8 seems quite a sturdy lump with around 400bhp to be had  :y
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Kevin Wood

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Re: Engines... the Z28NET
« Reply #5 on: 15 June 2011, 15:12:00 »

Quote
Was just a thought, whatever I put in there will require custom work etc as the 3.2 wont give me the abusable power vs reliabilty I need and the 2.8 seems quite a sturdy lump with around 400bhp to be had  :y

Just playing devil's advocate for a minute, but why not?

Would it not be simpler to fix whatever issues you have with a standard fit engine than to spend a lot of time fitting a non-standard engine in the hope that the problems will go away?
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aaronjb

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Re: Engines... the Z28NET
« Reply #6 on: 15 June 2011, 16:08:42 »

Quote
Quote
Was just a thought, whatever I put in there will require custom work etc as the 3.2 wont give me the abusable power vs reliabilty I need and the 2.8 seems quite a sturdy lump with around 400bhp to be had  :y

Just playing devil's advocate for a minute, but why not?

Would it not be simpler to fix whatever issues you have with a standard fit engine than to spend a lot of time fitting a non-standard engine in the hope that the problems will go away?

I'm just guessing he's looking for considerably more than 210bhp for teh dorifto .. ;)
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Kevin Wood

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Re: Engines... the Z28NET
« Reply #7 on: 15 June 2011, 16:26:37 »

Quote
I'm just guessing he's looking for considerably more than 210bhp for teh dorifto .. ;)

Well, I wondered about reliable, abusable power, implying that the power wasn't necessarily the issue, but reliability, which could perhaps be improved.

I'll happily admit that I know nothing about drifting but since, from observation, 90% of the engine power developed seems to be dissipated at the interface between tyre and road I assume that 210 would be adequate... ;)
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aaronjb

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Re: Engines... the Z28NET
« Reply #8 on: 15 June 2011, 16:33:56 »

Quote
Well, I wondered about reliable, abusable power, implying that the power wasn't necessarily the issue, but reliability, which could perhaps be improved.

I'll happily admit that I know nothing about drifting but since, from observation, 90% of the engine power developed seems to be dissipated at the interface between tyre and road I assume that 210 would be adequate... ;)

A valid point.. :)
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GmasterT

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Re: Engines... the Z28NET
« Reply #9 on: 15 June 2011, 17:51:14 »

Entirely agree chaps, you may have noticed that I did some drifts with nigh on standard 2.5 at the weekend and used to adore my old 3.2 for such fun.

However, in competition on a car this size I would require around a 255 rear tyre which the 210bhp just wouldnt be able to hack, especially on the fast 90mph+ entry stuff.

They are fine and Fun on 205's but you need grip so you can chuck it in harder and go faster and thats the case in comps :y

(edit, plus the silly clutch/flywheel and the fact I have already blown one up doesnt bode so well when Im relying on it :))
« Last Edit: 15 June 2011, 17:52:12 by GmasterT »
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Kevin Wood

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Re: Engines... the Z28NET
« Reply #10 on: 15 June 2011, 19:18:08 »

Quote
Entirely agree chaps, you may have noticed that I did some drifts with nigh on standard 2.5 at the weekend and used to adore my old 3.2 for such fun.

However, in competition on a car this size I would require around a 255 rear tyre which the 210bhp just wouldnt be able to hack, especially on the fast 90mph+ entry stuff.

They are fine and Fun on 205's but you need grip so you can chuck it in harder and go faster and thats the case in comps :y

(edit, plus the silly clutch/flywheel and the fact I have already blown one up doesnt bode so well when Im relying on it :))


OK. Points taken. What about the lag you'll get from a turbo engine? Sounds to me like a V8 might be a better plan as it'll be more controllable.

Do you know why the 3.2 failed? Oil starvation? Overheating perhaps? Things that might be resolved with a dry sump or better cooling setup?

IIRC you can fit a solid flywheel and clutch easily enough.

Kevin
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cem_devecioglu

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Re: Engines... the Z28NET
« Reply #11 on: 15 June 2011, 19:48:39 »

Quote
Quote
Entirely agree chaps, you may have noticed that I did some drifts with nigh on standard 2.5 at the weekend and used to adore my old 3.2 for such fun.

However, in competition on a car this size I would require around a 255 rear tyre which the 210bhp just wouldnt be able to hack, especially on the fast 90mph+ entry stuff.

They are fine and Fun on 205's but you need grip so you can chuck it in harder and go faster and thats the case in comps :y

(edit, plus the silly clutch/flywheel and the fact I have already blown one up doesnt bode so well when Im relying on it :))


OK. Points taken. What about the lag you'll get from a turbo engine? Sounds to me like a V8 might be a better plan as it'll be more controllable.

Do you know why the 3.2 failed? Oil starvation? Overheating perhaps? Things that might be resolved with a dry sump or better cooling setup?

IIRC you can fit a solid flywheel and clutch easily enough.

Kevin

definitely.. you will struggle to keep the revs high all the time..
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Omegatoy

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Re: Engines... the Z28NET
« Reply #12 on: 15 June 2011, 19:54:25 »

Hmm IJZ 2GT would be a better choice? twin sequential turbo, with the big power coming in around 3k from the 2nd turbo?
400bhp easily available as they had 330 standard,
and you can pick up an  early Aristo cheaply
we just bought one for 700 taxed and tested, standard fit is sludgepump though, so supra manual box required!! or similar which will take the power, having said that the auto is nigh on indestructible as long as the fluid is kept cool enough, it has been known to cope quite happily with 500bhp :y

aaronjb

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Re: Engines... the Z28NET
« Reply #13 on: 15 June 2011, 19:55:55 »

Quote
Quote
Quote
Entirely agree chaps, you may have noticed that I did some drifts with nigh on standard 2.5 at the weekend and used to adore my old 3.2 for such fun.

However, in competition on a car this size I would require around a 255 rear tyre which the 210bhp just wouldnt be able to hack, especially on the fast 90mph+ entry stuff.

They are fine and Fun on 205's but you need grip so you can chuck it in harder and go faster and thats the case in comps :y

(edit, plus the silly clutch/flywheel and the fact I have already blown one up doesnt bode so well when Im relying on it :))


OK. Points taken. What about the lag you'll get from a turbo engine? Sounds to me like a V8 might be a better plan as it'll be more controllable.

Do you know why the 3.2 failed? Oil starvation? Overheating perhaps? Things that might be resolved with a dry sump or better cooling setup?

IIRC you can fit a solid flywheel and clutch easily enough.

Kevin

definitely.. you will struggle to keep the revs high all the time..

Aren't most of the Japanese drift cars relatively small capacity turbo motors, though (at least most of the ones I've seen) - 200SX, Skylines, Supras etc with CA18DET, RB26DET, 1JZs etc.. they don't seem to have much trouble staying very sideways :)
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GmasterT

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Re: Engines... the Z28NET
« Reply #14 on: 16 June 2011, 17:27:05 »

Quote
Quote
Quote
Quote
Entirely agree chaps, you may have noticed that I did some drifts with nigh on standard 2.5 at the weekend and used to adore my old 3.2 for such fun.

However, in competition on a car this size I would require around a 255 rear tyre which the 210bhp just wouldnt be able to hack, especially on the fast 90mph+ entry stuff.

They are fine and Fun on 205's but you need grip so you can chuck it in harder and go faster and thats the case in comps :y

(edit, plus the silly clutch/flywheel and the fact I have already blown one up doesnt bode so well when Im relying on it :))


OK. Points taken. What about the lag you'll get from a turbo engine? Sounds to me like a V8 might be a better plan as it'll be more controllable.

Do you know why the 3.2 failed? Oil starvation? Overheating perhaps? Things that might be resolved with a dry sump or better cooling setup?

IIRC you can fit a solid flywheel and clutch easily enough.

Kevin

definitely.. you will struggle to keep the revs high all the time..

Aren't most of the Japanese drift cars relatively small capacity turbo motors, though (at least most of the ones I've seen) - 200SX, Skylines, Supras etc with CA18DET, RB26DET, 1JZs etc.. they don't seem to have much trouble staying very sideways :)

Turbo lag isnt so much an issue, you have to keep the revs high anyway. Dont get me wrong, I love the V6 and I'm gagging for another 3.2 (the recent 2.5 I have for fun is still good) but for what I need, it isnt enough.

My old one dies because of me to be fair I let it go too low on the oil for sideways action, knowcked out the bottom end) but to tune a relative unknown that is the 3.2 to a level I require would cost a fortune and most likley end in disaster anyway, its just how it goes!

You don't tend to struggle keeping it in high revs, Im not so much a drift enthusiast, I competed in the best series in the country last year in a low powered skyline and came 6th overall, so I know the ins and outs of it all.

A V8 would be lovely, but the LS is the only one Id be interested in and thats £4k before youve even thought about fitting and mapping.

So the 1JZ was the current option (Toyota 2.5 straight 6 turbo) as it is the best balance between cost, power and reliability (and is better than the nissan equiv). Keeping the standard set up can see around 320 horse with barely any lag, a big single turbo can see anything between that and 600ish if you really want to go mad and it will take it.

I have driven the Driftworks R32 Skyline with one of these engines at 550bhp running 275 track tyres, it was immense, fast, grippy and still responsive, like everything was 2 levels higher!

Even the SR20 (Nissan 2.0 4pot) can have a useable 350-400bhp and stay relaible. Howver, they sound horrid so not an option :D

I was just thinking about the shorter V6 option on something that was already turbod. £1000 can get you 1-400bhp on a turbo car, you may see 30 on an N/A  :)
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