Boosted Y8 pushing coolant?

[acrheam]

I have a Ek hatch, with a built y8 boosted on 17lbs. I thought I blew a head gasket because one day I was driving and all of a sudden thick white clouds everywhere. It's tuned to run Premium. I kind of think I accidentally put Unleaded in it but I'm not 100% sure. Motor has forged Pistons, eagle rods, comp cam springs and retainers, arp head studs.


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[HeX]

All standard gas is unleaded, so you must mean something else. Please clarify.

 

[acrheam]

It's tuned for Premium


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[nd4sped]

So its tuned to run on 93 octane but you think you put 87 in it. Do you not have a wideband? What AFR's are you getting across the powerband?

 

[mc360]

Guaranteed if it's tuned for 91/93 and you put 87 in you blew the gasket, you have to run premium because of the extra timing . When I reinstalled my turbo on my y8 I forgot to fill with 91 and did the same thing you did and blew my gasket.

 

[Jailbird]

Guaranteed if it's tuned for 91/93 and you put 87 in you blew the gasket, you have to run premium because of the extra timing . When I reinstalled my turbo on my y8 I forgot to fill with 91 and did the same thing you did and blew my gasket.

Noooooooooooo!!!!!!!!!!!!!