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18 Posts
Hey guys, I've made a post before but it was a couple months ago. I have a 1997 3000GT base, 4 speed auto FWD with the SOHC engine. Are there any SOHC engine heads on here?
I need to pick someone's brain, someone who knows about the engine and car. Specifically, can I just drop a DOHC in it with new wiring harness and ecu? Or do i need a new transmission as well? Will I have to use different engine mounting points, or just different engine mounts?
I also have a current overheating issue. I got the car about 3 months ago, with fresh coolant in it from 3 months prior. Changed the radiator cap, radiator, and coolant, as well as a new thermostat, and even used Royal Purple coolant additive that helps run 25 degrees cooler. I have about a 70/30 coolant to water mix, but i might add some more water. When i floor the car or drive it hard, even at night when its in the 60's or 50's, when i continually floor it, the temp slowly goes up. It used to go up real fast, but the old radiator also had some sort of build up coming out of it, and that fresh coolant that the previous owner had put it was all brown.
With a new radiator, thermostat, radiator cap, and new coolant, could I have a cracked cylinder or blown head gasket? Is that common on these things? Or maybe there is just rust inside the block from when it sat in a field for 4 years? After a whole new cooling system(except hoses and fans, fans still work fine), I shouldn't be heating up anymore.
Thoughts?
I need to pick someone's brain, someone who knows about the engine and car. Specifically, can I just drop a DOHC in it with new wiring harness and ecu? Or do i need a new transmission as well? Will I have to use different engine mounting points, or just different engine mounts?
I also have a current overheating issue. I got the car about 3 months ago, with fresh coolant in it from 3 months prior. Changed the radiator cap, radiator, and coolant, as well as a new thermostat, and even used Royal Purple coolant additive that helps run 25 degrees cooler. I have about a 70/30 coolant to water mix, but i might add some more water. When i floor the car or drive it hard, even at night when its in the 60's or 50's, when i continually floor it, the temp slowly goes up. It used to go up real fast, but the old radiator also had some sort of build up coming out of it, and that fresh coolant that the previous owner had put it was all brown.
With a new radiator, thermostat, radiator cap, and new coolant, could I have a cracked cylinder or blown head gasket? Is that common on these things? Or maybe there is just rust inside the block from when it sat in a field for 4 years? After a whole new cooling system(except hoses and fans, fans still work fine), I shouldn't be heating up anymore.
Thoughts?