Intercooler positioning if you're turboing a 2zz

[1979scotte]

Anybody got a good lead on a turbo? I've got a 2zz turbo manifold from turbokits with a T2 flange.

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What does your GUY reckon?

GTX2860R would be my choice most probably but they ain't cheap.

[michaelb]

To be honest, he wanted me to get a tubular manifold and fit a T3 turbo but costs have restricted me to a cast manifold.

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[michaelb]

I don't know why you referred to him like that mate? Bit unnecessary!

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[1979scotte]

To be honest, he wanted me to get a tubular manifold and fit a T3 turbo but costs have restricted me to a cast manifold.

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Cast is BETTER they very rarely crack.
T3 is larger but unnecessary with your power goals.
I was just about to recommend the BW EFR6258 but that's even more expensive.
Go for a Chinese copy off of eBay gt2871 equivalent. They cheap.

[1979scotte]

I don't know why you referred to him like that mate? Bit unnecessary!

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Possibly because I think he knows about 2jz but very little about 2zz or their gearboxes.
You've already done a 2zz swap and been disappointed ( not the first to do that ) I don't want you to get burned.
Sorry.

[michaelb]

Oh I'm not disappointed mate, it's a really nice engine and drives really well. I always had the intention of turboing it. I would be a little worried about the Chinese copies though. I've heard they aren't great quality at all and can easily go bang?

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[michaelb]

Has anyone got any success stories using the Chinese copies?

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[shnazzle]

Has anyone got any success stories using the Chinese copies?

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There was a video on it a while back that I watched. The conclusion basically was that yes they work, until they don't. And then you've spent 2x turbo and possibly fixing damage to your engine, when you could have just spent 1.5x the money on a proper turbo and have a lot less chance of issues.
The 2860R is pretty darn bulletproof.

[michaelb]

It's more like 8x the price to be honest lol but yes, I have looked at that turbo. I'm also looking at this - https://rover.ebay.com/rover/0/0/0?mpre=https%3A%2F%2Fwww.ebay.co.uk%2Fulk%2Fitm%2F263995804676

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[Nvy]

It's more like 8x the price to be honest lol but yes, I have looked at that turbo. I'm also looking at this - https://rover.ebay.com/rover/0/0/0?mpre=https%3A%2F%2Fwww.ebay.co.uk%2Fulk%2Fitm%2F263995804676

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To be honest i think you need quite a lot of reading on all these stuff that you are asking questions on. This is diesel turbo and it needs a lot more psi to flow. There are a lot of turbo builds on the internet that will give you base idea what is going to work and how. Dont mind the us guys that are showing crazy whp numbers, these are not real but the setups are up on google. For intercooler check porsche 911 turbo setup behind the wheel and pick your turbo Chinese or not. Usually holsets are quite popular in big engine builds but are laggier than the ball bearing turbos. If you want to give 500 quids for holset id save some more cash and get garrett 2860. It will be easy to blow your gearbox with either of these...

Bottom line: builds and the engineering is done on real cars just use google. Sure we can chat and so on but your guy who is building petrol engines that were supposed to be diesel ones is not qualified to say this and that for 2zz and cXX boxes.

[michaelb]

I'm considering a Garrett T2560

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[1979scotte]

I'm considering a Garrett T2560

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Not big enough for a 2zz IMHO.
That is then sort of size a 1zz would be happy with.
Think about how much more air a 2zz needs to flow. It makes 50 more bhp from basically the same cubic capacity.
The smallest I would go would be a GT2860RS  around £800 for a genuine one.
I have read old posts that say bigger than that but so few people go 2zz turbo on this forum I'm not sure.

From my own experience trying to do things on the cheap usually ends up costing more

[dan944]

I'm considering a Garrett T2560

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Not big enough for a 2zz IMHO.
That is then sort of size a 1zz would be happy with.
Think about how much more air a 2zz needs to flow. It makes 50 more bhp from basically the same cubic capacity.
The smallest I would go would be a GT2860RS  around £800 for a genuine one.
I have read old posts that say bigger than that but so few people go 2zz turbo on this forum I'm not sure.

From my own experience trying to do things on the cheap usually ends up costing more

I would also say 2860 as minimum. 2554 is rated at max of around 300hp but you don't really any to be running it at the limit all the time for longevity.

[michaelb]

T2560 is rated at 330 though

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[dan944]

T2560 is rated at 330 though

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I know some one who will know the very best turbo to put on a 2zz and that would be Greg.
I just honestly think it may be too small. Purely based on air flow

[1979scotte]

T2560 is rated at 330 though

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Go to the Garrett website.
Look up GT2560.
It's a 270 bhp turbo max in ideal conditions.
Which a mid engine car with a intercooler is not.

Perhaps try looking a turbos that people fit to Honda k20 engines as they are a highly tuned 4 pots.

[shnazzle]

T2560 is rated at 330 though

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I know some one who will know the very best turbo to put on a 2zz and that would be Greg.
I just honestly think it may be too small. Purely based on air flow

Very good point. You need to get in touch with Greg at RRR. He's a 2zz expert

[dan944]

T2560 is rated at 330 though

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I know some one who will know the very best turbo to put on a 2zz and that would be Greg.
I just honestly think it may be too small. Purely based on air flow

Very good point. You need to get in touch with Greg at RRR. He's a 2zz expert

And he's a wizard

[shnazzle]

T2560 is rated at 330 though

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I know some one who will know the very best turbo to put on a 2zz and that would be Greg.
I just honestly think it may be too small. Purely based on air flow

Very good point. You need to get in touch with Greg at RRR. He's a 2zz expert

And he's a wizard

And generally quite a sexy guy  @Greg rrr

[dan944]

T2560 is rated at 330 though

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I know some one who will know the very best turbo to put on a 2zz and that would be Greg.
I just honestly think it may be too small. Purely based on air flow

Very good point. You need to get in touch with Greg at RRR. He's a 2zz expert

And he's a wizard

And generally quite a sexy guy  @Greg rrr

I've noticed a trend of male appreciation posts Patrick. Should Helen be concerned? [emoji23]

[shnazzle]

T2560 is rated at 330 though

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I know some one who will know the very best turbo to put on a 2zz and that would be Greg.
I just honestly think it may be too small. Purely based on air flow

Very good point. You need to get in touch with Greg at RRR. He's a 2zz expert

And he's a wizard

And generally quite a sexy guy  @Greg rrr

I've noticed a trend of male appreciation posts Patrick. Should Helen be concerned? [emoji23]

Haha. It's most certainly not a trend!
A trend is people trying to squeeze crazy power out of an efficiency engine (not 2zz). Me actively making people feel a bit uncomfortable is just laughs all round haha

[michaelb]

Ok, so I've been chatting to Lewis and he has told me that the GT2560 is actually what some people know as the T28 (depending on where you are in the community). He has told me that the GT2560, non high spool turbo will push out 340bhp, whereas the high spool runs out below 300.

This is nothing short of a minefield

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[1979scotte]

Ok, so I've been chatting to Lewis and he has told me that the GT2560 is actually what some people know as the T28 (depending on where you are in the community). He has told me that the GT2560, non high spool turbo will push out 340bhp, whereas the high spool runs out below 300.

This is nothing short of a minefield

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Dan has a gt2554r on his 1zz and made 209 whp god knows how a gt2560 could make that sort of power even on a 2zz.
I only refer to turbos by they're manufacturer designations to avoid the whole T25 T28 confusion.

You need to talk to Seven motorsports or RRR Engineering.

[michaelb]

For an extreme novice like myself, I find this all very confusing and difficult. I'm getting conflicting opinions from all corners. I am heavily reliant on what people are telling me (which I make no excuses for), and really don't know which way to turn. I have spoken to several of these people you referred to and they are very knowledgeable, but keep pointing me to very expensive kit such as £1200 tubular manifolds and £1500 turbo's. I know this can be done more cheaply but not 'on the cheap'. I want some help to try and get a decent amount of power without spending a small fortune.

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[dan944]

For an extreme novice like myself, I find this all very confusing and difficult. I'm getting conflicting opinions from all corners. I am heavily reliant on what people are telling me (which I make no excuses for), and really don't know which way to turn. I have spoken to several of these people you referred to and they are very knowledgeable, but keep pointing me to very expensive kit such as £1200 tubular manifolds and £1500 turbo's. I know this can be done more cheaply but not 'on the cheap'. I want some help to try and get a decent amount of power without spending a small fortune.

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An EFR turbo would be exceptional, but if you're budgeting (like I did) a Garret is undeniably the best option IMO. Going as cheap as a Chinese replica may be fine and last forever, but is that a risk you want to take.
I swore from the start that I'd pay out for a brand new, good quality turbo on the buy right or buy twice basis. And in reality. Once you add delivery and import tax. There wasnt a massive difference in price. Not when you're dealing with the pedigree that comes with the likes of Garrett-Honeywell.

Unless you know someone who has turbo'd a 2zz and can speak to them about it, it's all judgement and estimation.

Personally I think 2zz with gt2860r bolted on and the cooling extras we talked about would be an epic car.
But...it would still be limited by the gearbox to about 250lbft without very sympathetic driving. That's just fact.

Lots and lots to consider mate. You don't have to go to 300hp right now though. Just because the gearbox limits you. It doesn't mean you can't fit everything that will handle your goal power figures and just limit the tuning for now. Until you decide your gearbox plan.