Blew the head gasket last night

[maldo]

Like the subject says, my head gasket is toast. Not sure what else I damaged but should know by the end of the weekend. The car ran ok at the track except for the slipping clutch which cost me over 1 second from my calculations. B6T w/ 2.25" exhaust, 12psi, S-AFC, MSD ignition and PRM intake only was capable of 16.446et, pretty poor by my standards. My new clutch should be arriving in the next week or so. I am taking the head off tonight to see what kind of damage there is. I need to degrease the entire engine bay since the gasket blew on the outside section of the #1 cylinder- firing oil all over the place. Think I will do a good port and polish while I am at it.

[maldo]

I yanked the head off tonight to see how bad the head gasket was blown on my motor. The head gasket seemed pretty good, everything looked fine until I put a little more light on the motor. The piston in #1 cylinder was missing a small section off of it. At first I thought that it collided with a valve (same area as the valves close in on) but obviously it must have ran a little lean. The tuning I did on the S-AFC at 10psi must have been dead on and the jump to 12-13psi was too much. So I have to change some of my plans for the car. I am going to port and polish the head, intake and exhaust manifolds, probably do a valve job at the same time. My ACT clutch should be arriving in the next week or so, hopefully I will have my RR-FPR and new exhaust on then too.<P>Does anyone have an extra set of stock pistons or just one piston would do? Does anyone have a set of miata pistons? My other option is to get the Wiseco pistons that FM is selling ($525 is a little over my budget though). Would it be cheaper to just get a miata short block? If anybody has a piston or a set, let me know.<P>Chris Malden

[torpedan]

Ewwwww nasty personally i would look into the short block, would prolly save you some time. Espically pending what type of damage was done, did you burn a hole threw it or was it detonation? If it was detonation what happend to the lil metal bits... =]

[maldo]

I had a brain wave last night. The motor that I took out and replaced with the B6T in my MX3 uses the same sized pistons that the GTX and Miata use. The pistons are from a '92 B6e SOHC motor, 9:1 CR, if I use new rings, would these work? My other option would be to swap in the entire block from the B6e and bolt the B6T head to it, opinions on this?<P>Thanks for all the offers for pistons and blocks, I will keep them in mind with this rebuild.<P>Chris Malden<P>ps - it was detonation, I imagine the metal bits are in my oil pan but I haven't made it that far.