The 1ZZ Turbo Engine Dream Build

[m1tch]

TCB have come back with a good price for forged rods, might still have to get my pistons from MWR as they bought in huge bulk so the price is much lower.

[1979scotte]

TCB have come back with a good price for forged rods, might still have to get my pistons from MWR as they bought in huge bulk so the price is much lower.

Exactly what I was going to do.
Shame about import duty vat and shipping.

[m1tch]

TCB have come back with a good price for forged rods, might still have to get my pistons from MWR as they bought in huge bulk so the price is much lower.

Exactly what I was going to do.
Shame about import duty vat and shipping.

Indeed, although TCB is seeing what price they can get them for in the UK from Wiesco vs the duty and VAT from the states, might actually be cheaper from the states, loads of 2zz parts, the 1zz seems slightly more unloved.

[1979scotte]

TCB have come back with a good price for forged rods, might still have to get my pistons from MWR as they bought in huge bulk so the price is much lower.

Exactly what I was going to do.
Shame about import duty vat and shipping.

Indeed, although TCB is seeing what price they can get them for in the UK from Wiesco vs the duty and VAT from the states, might actually be cheaper from the states, loads of 2zz parts, the 1zz seems slightly more unloved.

The price TCB got me from Wiseco was more than getting them from MWR. Thats with tax and shipping.

[manos3003]

What price was that Scott if you don't mind sharing?

[m1tch]

Also worth putting forward is to bore out to 82mm which will give you an almost 2 litre engine but would require Darton sleeves and the machine work that is required, I will be keeping the stock bore (or close to) at keep it at 79.5mm hone.

[1979scotte]

Also worth putting forward is to bore out to 82mm which will give you an almost 2 litre engine but would require Darton sleeves and the machine work that is required, I will be keeping the stock bore (or close to) at keep it at 79.5mm hone.

Not sure it's worth sleeving when going FI naturally aspirated for sure.

[Essex2Visuvesi]

Found this on evilbay
 m http://www.ebay.co.uk/itm/132256886038 m

tempting

[m1tch]

Also worth putting forward is to bore out to 82mm which will give you an almost 2 litre engine but would require Darton sleeves and the machine work that is required, I will be keeping the stock bore (or close to) at keep it at 79.5mm hone.

Not sure it's worth sleeving when going FI naturally aspirated for sure.

I didn't think that the OEM bores were strong enough when bored out to 82mm - just going on what MWR is suggesting.

[1979scotte]

Also worth putting forward is to bore out to 82mm which will give you an almost 2 litre engine but would require Darton sleeves and the machine work that is required, I will be keeping the stock bore (or close to) at keep it at 79.5mm hone.

Not sure it's worth sleeving when going FI naturally aspirated for sure.

I didn't think that the OEM bores were strong enough when bored out to 82mm - just going on what MWR is suggesting.

What mean to say is that I am not sure you need the extra displacement when going FI.
With forged internals you can boost the hell out of it anyway so why pay out for an extra 0.2L.

It's like k20 honda engines when they do NA builds they can go all the way to 2.7 but when they do FI builds then generally only go 2.4. The k20 is way stronger than 1zz.

[m1tch]

Not sure it's worth sleeving when going FI naturally aspirated for sure.

I didn't think that the OEM bores were strong enough when bored out to 82mm - just going on what MWR is suggesting.

What mean to say is that I am not sure you need the extra displacement when going FI.
With forged internals you can boost the hell out of it anyway so why pay out for an extra 0.2L.

It's like k20 honda engines when they do NA builds they can go all the way to 2.7 but when they do FI builds then generally only go 2.4. The k20 is way stronger than 1zz.

Ah, that makes more sense, yeah I don't really plan to bore the engine out as it will be FI so will aim for the 79.5mm bore size, I did look into the K swap but wanted to keep it Toyota plus it will make things simpler, interestingly the VW aircooled pistons are 79.5mm as are the GSXR1100 pistons and overbore MX5 1.6 pistons however I doubt the deck height is the same!

[manos3003]

I did look into the K swap but wanted to keep it Toyota plus it will make things simpler

Leave the K swap for a racecar, it requires a lot more than what one actually thinks. It's complicated, needs cutting and re-welding firewalls and the torsional vibrations make it uncomfortable for a daily drive.

I'll be doing one but I don't intend to use that car anywhere else other than tracks.

1ZZ turbo is a good balance for a daily drive once rebuilt properly  s:) s:)

[m1tch]

I did look into the K swap but wanted to keep it Toyota plus it will make things simpler

Leave the K swap for a racecar, it requires a lot more than what one actually thinks. It's complicated, needs cutting and re-welding firewalls and the torsional vibrations make it uncomfortable for a daily drive.

I'll be doing one but I don't intend to use that car anywhere else other than tracks.

1ZZ turbo is a good balance for a daily drive once rebuilt properly  s:) s:)

That is what I figured, aim for my project would be to get extra power reliability, its good to know that you can still run over 200bhp on stock internals - as the saying goes - Cheap, Reliable, Powerful (chose 2).

Will be starting to collect parts probably at the end of the year start of next, need to source a donor engine and box after I have space in the garage.

[manos3003]

I did look into the K swap but wanted to keep it Toyota plus it will make things simpler

Leave the K swap for a racecar, it requires a lot more than what one actually thinks. It's complicated, needs cutting and re-welding firewalls and the torsional vibrations make it uncomfortable for a daily drive.

I'll be doing one but I don't intend to use that car anywhere else other than tracks.

1ZZ turbo is a good balance for a daily drive once rebuilt properly  s:) s:)

That is what I figured, aim for my project would be to get extra power reliability, its good to know that you can still run over 200bhp on stock internals - as the saying goes - Cheap, Reliable, Powerful (chose 2).

Will be starting to collect parts probably at the end of the year start of next, need to source a donor engine and box after I have space in the garage.

You can have my 5speed for free, but there's no Torsen in there

[m1tch]

Leave the K swap for a racecar, it requires a lot more than what one actually thinks. It's complicated, needs cutting and re-welding firewalls and the torsional vibrations make it uncomfortable for a daily drive.

I'll be doing one but I don't intend to use that car anywhere else other than tracks.

1ZZ turbo is a good balance for a daily drive once rebuilt properly  s:) s:)

That is what I figured, aim for my project would be to get extra power reliability, its good to know that you can still run over 200bhp on stock internals - as the saying goes - Cheap, Reliable, Powerful (chose 2).

Will be starting to collect parts probably at the end of the year start of next, need to source a donor engine and box after I have space in the garage.

You can have my 5speed for free, but there's no Torsen in there

Its tempting, however I will be looking to run a C64 gearbox as I would need to drop in the SSC/JUBA 3rd and 4th gears so will be going with a 6 speed box.

[paul.mcgrath]

I would also be interested in the source of forged parts this side of the pond , seems MWR have it all covered ...

But as a question to forging the 1zz , the gearbox restricts us with the torque and there's the oil issue aswell ...... is it really worth forging ??

[1979scotte]

I would also be interested in the source of forged parts this side of the pond , seems MWR have it all covered ...

But as a question to forging the 1zz , the gearbox restricts us with the torque and there's the oil issue aswell ...... is it really worth forging ??

I decided it wasn't worth it for me as I wanted bags of torque so went for a V6 and will be adding a supercharger.
You can strengthen the box with hardened gears or fit an e153 or maybe an s54.
Each to there own.
Tommyzoom has his built NA 1zz which must have cost a packet for 190bhp when a couple of grand on a turbo would have got you more for less.
Sometimes is about being different or the working it all out.
The cheapest way to big power imho is 2zz swap and forced induction but that's not for me.

[paul.mcgrath]

If we can get 250ish BHP on stock internals , I'm struggling to see the upside of forging... If we're restricted by the gearbox and oil problems , its all a personal choice as you say , how many stock 1zz engines could you have to equal a fully built 1zz and still worry about the oil problems.....

I only ask because im in the same position and I just don't know , maybe a swap is the only way .......

[1979scotte]

If we can get 250ish BHP on stock internals , I'm struggling to see the upside of forging... If we're restricted by the gearbox and oil problems , its all a personal choice as you say , how many stock 1zz engines could you have to equal a fully built 1zz and still worry about the oil problems.....

I only ask because I'm in the same position and I just don't know , maybe a swap is the only way .......

Tbh not really sure what oil problems you are worried about.
With revised 06 pistons and twice yearly oil change oil won't be a problem.
There are so many 1zz out there it was a massively popular engine it's only in the 2 with precats that it really becomes a problem.

Gearbox giving up at 250 ft-lb isn't ideal but you could limit boost at peak torque to keep it under control whilst allowing a lot of bhp at the top end.
I had the rods I was going to do it but changed my mind.

Would like to know how stupink is getting on he was making 290bhp on stock internals with gt2871 and piggyback.

[m1tch]

Just thinking again about the 79.5mm vs 82mm vs 82.5mm, I think the pistons are the same price for the aftermarket sizes meaning there isn't an extra cost to go with a slightly larger piston as the block would need to be bored and honed out to any of the sizes.

The extra displacement would help with NA power but a turbo engine off boost is NA - also a turbo engine with lower compression ratio pistons off boost would make less power than an NA engine - perhaps its worth running with 82mm pistons for a slight increase in displacement? MWR does state that you need to sleeve the block for the 82mm and 82.5mm engines but I am sure that the stock sleeves should be ok?

Just a thought.

[lamcote]

You wouldn't need the sleeves for 79.5mm bore but you definitely will for 82 or 82.5mm so that is a significant cost difference.

[1979scotte]

Just thinking again about the 79.5mm vs 82mm vs 82.5mm, I think the pistons are the same price for the aftermarket sizes meaning there isn't an extra cost to go with a slightly larger piston as the block would need to be bored and honed out to any of the sizes.

The extra displacement would help with NA power but a turbo engine off boost is NA - also a turbo engine with lower compression ratio pistons off boost would make less power than an NA engine - perhaps its worth running with 82mm pistons for a slight increase in displacement? MWR does state that you need to sleeve the block for the 82mm and 82.5mm engines but I am sure that the stock sleeves should be ok?

Just a thought.

You'll need darton sleeves for the widest pistons and that's expensive.
If you are worried about performance off boost you could keep stock compression ratio perhaps add water methanol injection.
Some of the latest turbos from Garrett and Borg Warner spool really early and STILL make big power.

[m1tch]

Thanks guys, will be going with 79.5mm pistons it seems, already have an AEM meth injection kit sitting in the garage, will also look into decent boost controllers as I know that my old Apexi AVC-R you could change the solenoid gain by gear, think some standalone ECUs have boost control built in so will check what I have.

[1979scotte]

Det3 and emange ultimate are 2 piggybacks that will do boost control with the appropriate solenoid.

[m1tch]

Det3 and emange ultimate are 2 piggybacks that will do boost control with the appropriate solenoid.

Will probably be going AEM EMS 4 standalone so it should have boost control built it, should also be able to have an output for the meth injection.