Gary's Track Day/Fast Road Weekend Car 1zz Turbo.. Now Built 2zz Turbo with E153

[Nvy]

I wish I had you skills... Getting the engine out seems quite hard to me. I will have to do it at some point to get the engine build going.

[Gaz2405]

Knock the door this morning.

UPS, piston rings from Monkey Wrench Racing.

It's incredible how they get stuff from the US to your door step quicker than post UK sellers!

[Gaz2405]

So got an hour or so on the car today.

I've found the problem......


Ring gaps are huge, way out of tolerance.

I was either drunk or had a bad set of feeler gauges


I've ordered another set of gauges to double check, but in 99% sure this was the issue.

That and that stage 2 cams need to idle a little higher.

I have got another low mileage head if its way just incase, which I may send off for a set of big valves putting in and have some head work done to it.

But a slight feeling of relief as it looks like I've found the issue.

[shnazzle]

10-14mmHg lost because of some wide ring gaps.
I'd never have come up with that. Had no idea it could make that much difference. Wouldn't the compression have been off?

[Nvy]

So got an hour or so on the car today.

I've found the problem......


Ring gaps are huge, way out of tolerance.

I was either drunk or had a bad set of feeler gauges


I've ordered another set of gauges to double check, but in 99% sure this was the issue.

That and that stage 2 cams need to idle a little higher.

I have got another low mileage head if its way just incase, which I may send off for a set of big valves putting in and have some head work done to it.

But a slight feeling of relief as it looks like I've found the issue.

Didnt know you can fit bigger valves, can you shed some light on it?

[Gaz2405]

So got an hour or so on the car today.

I've found the problem......


Ring gaps are huge, way out of tolerance.

I was either drunk or had a bad set of feeler gauges


I've ordered another set of gauges to double check, but in 99% sure this was the issue.

That and that stage 2 cams need to idle a little higher.

I have got another low mileage head if its way just incase, which I may send off for a set of big valves putting in and have some head work done to it.

But a slight feeling of relief as it looks like I've found the issue.

Didnt know you can fit bigger valves, can you shed some light on it?

I'd assumed you would be able to, the exhaust valve looks like it coils go bigger.

The head can be flowed and ported though.

[Gaz2405]

10-14mmHg lost because of some wide ring gaps.
I'd never have come up with that. Had no idea it could make that much difference. Wouldn't the compression have been off?

Also you've not seen how much they're out by......insert facepalm emoji.

[thetyrant]

Personally I doubt its the ring gap but hope you get it sorted.

What gap did you have ?

[Gaz2405]

Personally I doubt its the ring gap but hope you get it sorted.

What gap did you have ?

Like way over 1mm! (No idea what went on!)

The car was dead until it started seeing some boost.

Like I've said on Instagram, of it's not the ring gap it's at least putting the engine back together and double checking everything again.

[Gaz2405]

Back on the operating table again!

Sump has just been through the dishwasher for a clean up

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[thetyrant]

Hopefully once all back together all is good, i watched a video few years ago experimenting with ring gaps it was really interesting, can't remember all the details but basics of it where even opening the gaps right up made very little difference to power and how it ran, main thing is not to have them too small as that soon destroys engine.

Keep up the good work 😀

[Gaz2405]

Pistons back in, after a couple of hours researching I went with 0.019" (0.48mm) top ring and 0.022"(0.55mm) bottom ring.

[shnazzle]

This showed up in my email just now haha

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[Call the midlife!]

I'll freely admit, I take them out of the packet and stick them straight on the piston and in the hole 🤓

[Gaz2405]

This showed up in my email just now haha

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🤣 I was subscribed to their tuning packages for a while, mainly the ECU tuning side. Some good stuff.

[Gaz2405]

I'll freely admit, I take them out of the packet and stick them straight on the piston and in the hole 🤓

😅 Full send!

[Gaz2405]

No major bits since over the last couple of days.

Redid the field lines, fully braided, and installed a new 340l fuel pump and an return line.

Also fitted by 1:1 rushing rate fuel pressure regulator.

I've alsi reinstalled the id1050x injectors looks like there's enough room to run them without the loom extensions they were on before.

Before I get the engine bolted in first thing I'll do is test the fuel pressure for any leaks at the rail and test fire the injectors.

Engine wise I've gone over the head, removed throttle body and cleaned the IACV.

There were a couple of small silicone hoses that I missed swapping over so got them swapped over.

The sump is all cleaned up and the threads all cleaned out and bolts cleaned back up ready for installation once the sealant shows up this week.

Hopefully the head gasket will arrive this week with the new arp bolts, so we can get the tuning back together.

[Gaz2405]

New ARP head studs arrived today.

So on with the head,in with the cams, timing chain on and timed up, timing chain cover on, water pump, alternator, idler, tensioner, AC pump.

Inlet manifold on, throttle body and all piped up.

Cam cover to go on and were ready to go back in!

[Call the midlife!]

Don't forget to put a big reminder on it to connect the cam sensor while you can 🤓

[Gaz2405]

Don't forget to put a big reminder on it to connect the cam sensor while you can 🤓

Already done it 🤦‍♂️🤣

[Mark A]

What was the boost delivery like with the Holset
HX32. I've been watching your posts with interest. I was going to try a HE221W but was interested to hear how you get on with yours before diving in.

I'm planning to fit Mahle pistons but was looking at CR of 10.1

[Gaz2405]

Little bit of prep the last couple of days ready for the engine going back in at the weekend.

Engine off the stand, gearbox attached.

Also went through some of my old rusty nuts and bolts and cleaned them up in brick acid, then a quick oil quench.

Garage all cleared out and tidy ready to roll the car in on Saturday morning.

[Gaz2405]

And the fecker's back in!

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Still some little bits to do before a start up, but not much.

A good mornings work!

[Call the midlife!]

Nice work! Is that u bend vacuum hose on the block kinked at the bend or just a trick of the photo?

[Gaz2405]

Nice work! Is that u bend vacuum hose on the block kinked at the bend or just a trick of the photo?

Good Spot, ran out of Bungs for the vacuum block, so it's two outlets looped together to act as a two bungs.