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Bad News for my Motor, internal damage :(


240hoke

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This setup would experience detonation on a regular basis. This setup had all stock internals, except for a steel o-rings with a copper head gasket, and ceramic coated stock pistons. The detonation on this setup was so regular that I had broken ten or so spark plugs, and also blew the copper head gasket.

 

The next 10k miles were run much more sanely. I put on a megasquirt, brought the AFRs down from 17:1 under boost to 12.5:1 under boost. Still running same boost. [/url]

 

zguy36, What you put your engine through is down right torture.. : ) I have to believe that the ceramic coatings had some factor in your pistons surviving as well as they did. Great write up!

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From my understanding of what ceramic coatings are for, is to reduce the heat brought into the piston. This in turn can reduce detonation, due to a colder piston head. But when detonation does occur, the extreme pressures and forces are not reduced by having a coated piston. The coatings may reduce the intensity of the detonation. I think for the most part, I am very lucky that I haven't destroyed each and every piston in this engine.

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  • 2 months later...

Well I thought I would post and update on this thread since I got the car back together and running.

 

I am now runnign a new intercooler system and Akycontrol Methonal injection along with ARP rod bolts. I havent done anythign to the motor besides put it together Like i mentioned before.

 

It runs very strong and smooth, right now i am running 26psi and with the methanol had to take a good bit of fuel out of my MAPs to bring it back up to 11:1. Hopefully I am going to get it on the Dyno at Z nationals, if not I guess the timeslips from SEZ will tell the tale.

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Well I thought I would post and update on this thread since I got the car back together and running.

 

I am now runnign a new intercooler system and Akycontrol Methonal injection along with ARP rod bolts. I havent done anythign to the motor besides put it together Like i mentioned before.

 

It runs very strong and smooth, right now i am running 26psi and with the methanol had to take a good bit of fuel out of my MAPs to bring it back up to 11:1. Hopefully I am going to get it on the Dyno at Z nationals, if not I guess the timeslips from SEZ will tell the tale.

 

26psi + methanol!!

Whew, Garrett, look out!!

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Im going to make a good writeup on installing methanol shortly (after SEZ)

 

....

 

 

 

Wouldn’t want to give the competition the “how-to” till after the big event… wink.gif

 

 

Sounds awesome Austin Looking forward to reading the full SEZ report…

 

Good luck guys and have fun…

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