Marty's Z22SE Rebuild

dewismotorsport

Very bad luck with the engines, have you re used the same oil pump that failed in the first one?

dewismotorsport

Very bad luck with the engines, have you re used the same oil pump that failed in the first one?

figo126

real shame ,,,,,,, youll have to invite , vocky ,, evocarlos for a free holiday n get them buiding your engine for you😉😉😉😉

Marty64

dewismotorsport said:
Very bad luck with the engines, have you re used the same oil pump that failed in the first one?

Yes Dewis, same oil pump that i used in first engine.
Why do you say it failed ? it seems to working well. (done few engine rotations with starter and without sparks to prime the pump : i saw the oil on chain normally come).

Marty64

All is refit.
For memory : I let standard engine in place and put Harrop SC 2.9" pulley with a 5.200rpm rev limiter.
I did a power measurement and result is:

I can push rpm limiter to 5400 and more to try if i don't past 250bhp.
But really don't need more right now ! Soo amazing.
What a massive torque ! I understand now why past 2500rpm i think i'm in a catapult !!
Max inlet temp on my trip was 48° C. I though i would find more heat. In normaly condition inlet temp is 33°C for an external 16°C.
Will do more test and a fuel learning.

dewismotorsport

Great result especially to torque, is all that done within the Dutch software?

Marty64

Yes tune with Obdtuner

Marty64

Fuel learning session done.

This week-end i took the car to test SC installation with very bad conditions : 30°C and a spanish mountain trip !

Obtain some good logs:

At 4847rpm i found IAT 49°C (with 30°C ext) and 10.4 psi.
Max IAT this day was 62°C after some full throttle, in normal condition IAT is 32°C, max boost found : 12psi.

Sadly, after this 200km trip my gear shift are now stiff.
I suspect the heat of tullet exhaust wich have destroyed gearbox cables :mad:

vocky

you should add heat sleeving to protect the gear cables

Marty64

Yes @[deleted] : THERMAL VELOCITY SPEED SHIELD SLEEVE 20mm Diam X 1.2m are on the way. 😉
Will apply wrap exhaust on elbow and put some nimbus between exhaust and gear cables.
But one rubber boot is cut, where i can get new ones ?

vocky

depends which CV boot you need, guess it's an inner one ?

http://www.vx220.org.uk/forums/topic/126299-cv-boots/

Marty64

vocky said:
depends which CV boot you need, guess it's an inner one ?

http://www.vx220.org.uk/forums/topic/126299-cv-boots/

Not CV boot, the one on the OEM gearbox cables:

I bought news on elise-shop but they don't have boot on them. Don't know if really need them ?

vocky

I don't believe you can buy them on their own, they certainly do go brittle with old age (n)

Marty64

Thermal heat shield sleeves fit

With exhaust wrap:

And finally some "Nimbus" heat shield:

Hope this will be enough to preserve new elise-shop gearbox cables !

Marty64

Some news about my project:
Last year, i tried a second rebuild and engine blocked again.

I've open it today and found same problem than first blocked engine on cylinder 1 :

All cylinders are keep in a good state.
I don't understand why crank shaft bearing n°1 are in this state. Too much torque on screws ? Wrong bearing ? Low oil pressure ?
Will take a look tomorrow if this is not a bent connecting rod issue.

evocarlos

looks like you may have had a foreign body in the oil way on the crank and its not been able to get out

vocky

certainly something to do with the oilways / oil pressure / foreign bodies in the oil

Marty64

Another pics and answers:

A second conrods bearing is damaged:

Do i need a new crankshaft ?

I found that 2 conrods were not installed in same way, is this bad ?

If you read back my project: when engine were rebuilt, when i tighten conrods screw : i couldn't turn it free without a particular strong force on the crankshaft. When i loosed conrods screws : it turn correctly.
What do you think about wrong bearings conrods size ?
I've used ZZP ECOTEC 2.0L/2.4L ROD BEARINGS
https://zzperformance.com/ecotec/engine/ecotec-2-0l-2-4l-rod-bearings.html

Or too much torque on screws ?
Or oil pump fault, how to check the oil pump ?

vocky

each bearing cap has a number, these must match the number on the conrod.

Also the numbers should be on the same side - unlike your photo !

Marty64

TY Vocky,
And is there a way to fit cap's number relative to the direction of engine rotation ?

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