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June 2004

Re: 3T-GTE Design flaw?

Sun, 23 January 2005 12:39

KoinTA22 wrote on Sun, 23 January 2005 21:21

Okay I pulled the head off and the gasket had a small "low" section that lead to a water jacket hole so thats hows the water got into the cylinder (Number 4). Although there was also water marks in the intake port of number 4. I don't know if that suggests a crack in the head or if the water could have ran or been pushed into the intake port. The gasket doesn't really explain the water in the oil though, as sealing around the oil galleries was still fine. I dont know if the water could have been pushed past the rings, water doesn't compress so it had to go somewhere when the piston came up and the rod isn't bent.
Also there was evidence of detonation in the fire rings of the head gasket, predominatly on cylinder 1 and 4. (Little dents in the fire rings) And also a score mark on cylinder number 4.
I also discovered that there was no intake airtemp sensor on the engine. I neglected to find this earlier as I just swapped the engine and computer as they were. Having been dyno'd by a reputible tuner I assumed everything was okay and that was why I didn't want to change anything at that point, I even swapped the exhaust from the other car.
Regarding logging from the Microtech, I don't yet have the PC link cable or software. I'm back at work now so only have weekends to work on the car again. So i'm collecting up stuff again so I can take a week or two off in a month or so to try and get the car back on the road again -having presumably wasted a heap of time and money allready. I'm getting the head pressure tested (hot) soon so hopefully it comes back good.

A 1UZ conversion is looking really good right now - the power I want, standard and N/A.

have you chacked for any visible cracks on the head? i have found that predominantly the crack is usually between the valves

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