V8 Supra MK3 1UZ Twin Turbo from Germany - Part II

[cribbj]

Wow John,
that sounds awesome. A +600ccm is crazy! Is it a V12 engine? Darton is a good choice. I like them...
We used sleeves for a Peugot disesel engine. They are cheap... My goal was to build a stronger block, not more displacement.

Yes, it's the V12 from the 550 Maranello, so I guess I'll have to change the name to a 600 Maranello The car is staying naturally aspirated, and its stock rating is only 88 HP/liter, so it's not stressed at all. The new 458 Ferrari has some insane HP/Liter figure around 110 or 115, so it's far more stressed than this '12.

Mine is a heavy GT class car, meant for comfortable, high speed cruising, not a hotrod like the 458.

 

[Speeedy]

Haha...600 Maranello sounds very good!
I wish you all the best for that "Italien (Stroker) Job"
I'm sure, you will love it...

 

[FoPar]

Hope those aren't the first variant of the CP 88.25mm pistons we got had way to much back clearance. But WOW! great build alot of interesting things going on their, I like the gasket idea.

We haven't re-sleeved yet but a friend of ours does, he is pushing 1500-1600hp+ with a 1UZ, we aren't quite there yet.

Keep up the great work.

 

[Speeedy]

Hope those aren't the first variant of the CP 88.25mm pistons we got had way to much back clearance. But WOW! great build alot of interesting things going on their, I like the gasket idea.

We haven't re-sleeved yet but a friend of ours does, he is pushing 1500-1600hp+ with a 1UZ, we aren't quite there yet.

Keep up the great work.

WHAT??? 1500-1600+HP???!!! That is unbelievable! AWESOME! Holy Moly...
Do you know some details of this 1UZ? Stock crank and mains? Or billet and with girdle? 800HP out of 2000ccm isn't that new, but it's a lot stress for the engine. Do you know the boost level of your Buddy?
But I've seen a lot of your videos and pictures and your Capri is very impressive too!!! TOP!

I've bought the CP pistons in 2012, so I think it's the first variant. I didn't know that problem when I ordered the pistons. Hmmm... I don't want to open the engine in the next time... It has only about 4000km on it right now...

 

[Speeedy]

Will post a lot more pictures soon...

 

[stevieg]

What mods did you have to do to fit the ATI 2jz damper/pulley?

 

[Speeedy]

What mods did you have to do to fit the ATI 2jz damper/pulley?

I have build an adapter. I have no pictures of this adapter only. But I have pics of it installed. Have to resize the pics and will post them soon...

 

[FoPar]

WHAT??? 1500-1600+HP???!!! That is unbelievable! AWESOME! Holy Moly...
Do you know some details of this 1UZ? Stock crank and mains? Or billet and with girdle? 800HP out of 2000ccm isn't that new, but it's a lot stress for the engine. Do you know the boost level of your Buddy?
But I've seen a lot of your videos and pictures and your Capri is very impressive too!!! TOP!

I've bought the CP pistons in 2012, so I think it's the first variant. I didn't know that problem when I ordered the pistons. Hmmm... I don't want to open the engine in the next time... It has only about 4000km on it right now...

It's a basic combo just like ours. Stock crank and mains. Was running about 40psi with the turbo's like we have was showing around 1300-1350hp@engine, now has Precision 6766 and is only pumping 30-35psi into it. It's on methanol, he does all the work himself. Has run 7.4@190mph+ in a Toyota Hilux.

If you got 4000km on them then you should be fine.

 

[Speeedy]

It's a basic combo just like ours. Stock crank and mains. Was running about 40psi with the turbo's like we have was showing around 1300-1350hp@engine, now has Precision 6766 and is only pumping 30-35psi into it. It's on methanol, he does all the work himself. Has run 7.4@190mph+ in a Toyota Hilux.

If you got 4000km on them then you should be fine.

That is awsome. The 1UZ is a very good choice and I'm happy to own a boosted one.

 

[Speeedy]

What mods did you have to do to fit the ATI 2jz damper/pulley?

Here are two pictures of the adapter.

If I'm right you need a longer bolt too. From the 2JZ...
There is a groove in this adpater inner hole for the crank tongue . And I installed another tongue in this groove too for the ATI hub... I hope you know what I mean. If not, I could do a little drawing to explain it...

 

[Speeedy]

I told you from my custom intake manifold which performed very bad. I will show you some pics of the fabrication and maybe you have an idea why it's so bad.
I think it's the runner lenght. It's only about 70mm to the surface of the heads...
It's not a peace of art but it was only a test...

Milling the surfaces of the flanges

Custom runners

rolling the hood...

Hood fabrication...

 

[stevieg]

Can you describe what the difference was? Does the JZ crank have a larger or smaller diameter crank end where the pulley goes on? Maybe a picture would help I guess, it looks like you've created a sleeve that enlarges the diameter of the 1uz crank to what the JZ is and created an inner key way in that adapter for the 1uz and the 2jz pulley?

Here are two pictures of the adapter.

If I'm right you need a longer bolt too. From the 2JZ...
There is a groove in this adpater inner hole for the crank tongue . And I installed another tongue in this groove too for the ATI hub... I hope you know what I mean. If not, I could do a little drawing to explain it...

 

[Speeedy]

Inside view

90mm TB

welded...

another view...

another inside view

 

[Speeedy]

Can you describe what the difference was? Does the JZ crank have a larger or smaller diameter crank end where the pulley goes on? Maybe a picture would help I guess, it looks like you've created a sleeve that enlarges the diameter of the 1uz crank to what the JZ is and created an inner key way in that adapter for the 1uz and the 2jz pulley?

The diameter of the crank end is exact the same like the 2JZ. But the 1UZ crank end is too short for the 2JZ ATI hub. So you have to find a way to bring the pulley on the needed position to drive your steering pump, alternator etc. That's why I build this adapter.
I have to think about it again and will do a drawing for you...
If I have to do it again, I would build a complete new (longer) hub instead of the 2JZ hub which comes with the ATI pulley.

 

[Speeedy]

Intake in engine bay...

...with IAC...

...and piping and twin 50mm TIAL BOV...

System is running...

...later with new radiator... and stock intake... That's an actual picture

 

[stevieg]

Can the ATI hub be easily replaced? Ie does it unbolt from the rest? Is it possible to snag a pic of it removed from the damper/pulley?

 

[Speeedy]

Yes, you can easily unbolt it. But it's not easy for me because of the downpipe etc.
Check the net for the 2jz hub for example. ATI part# is 916023

 

[stevechumo]

I like the dome manifold. It's kind of unique.

 

[FoPar]

How was the intake manifold performing bad?

 

[Speeedy]

I take a picture of the two fuel maps, with custom short runner intake and one of the OEM Intake. Target AFR are the same in both maps. As you can see, the custom intake fuel map is very flat and peak VE is at about 6800rpm vs 4800rpm with the OEM intake.
It feels like you drive with no or very low boost, but your gauge shows 20PSI and nothing happen.
The OEM intake is a very different story. Ok, a little too much low end torque, but I think I can get a little bit more at higher revs with more advanced cam timing, like John said.
Maybe I will build another manifold with stock lower manifold and a custom top tank with 90mm throttle body. That's very easy and takes not that much time to build.


OEM intake fuel map

Custom Intake fuel map