been on here a lot thinking about weather or not to turbo charge my Z... well, I have made the decision that it's going to happen. finally.
so far I have obtained pretty much everything I need other than an ecu and injectors. and it is a far cry to find parts for a Z31 out here in the United Arab Emirates... however, last week I pulled a complete turbo assembly, piping, exhaust manifold, idle control valve, air bypass valve, valve covers, and cross-member from a JDM VG20ET out of a 200Z and other misc. turbo parts. the turbo on the early Z31 is not a T3, but a Garret TB250. looks to be a bit smaller, but not as small as a T25. I'm not quite sure how much boost this little turbo was designed to run, but I can't imagine that is any more than 6 - 7 psi. I hope to have some pictures and maybe even a video posted soon.
the state of my current n/a motor is being rebuilt to address the oil burning issue that had been occurring previously. pistons are fried and rings coming apart on cylinder #4.
I'm fine with the 9:1 compression for a stock turbo setup, however the new pistons and rings going in are oversize (50 mm) so I don't know how much that will affect the compression. hopefully that won't create any issues. of course, I need to get the engine back together and perform the break-in period for the new components. after that is all completed, then I will start the NA2T process. since I am only looking to do a stock turbo configuration, I am thinking about getting a CM 2.5 exhaust pipe from the down pipe to the cat. won't be intercooling at this time, however as the hot summer comes soon, it may be necessary to keep things a bit cooler and safer for the engine.
one thing that I didn't remove from the VG20 was its oil cooler assembly and the oil pan. I think I will have an oil feed nipple welded to the my stock pan. I would hope that the stock oil cooler would aid in helping cool the oil especially for the turbo which unfortunately is not water cooled.
so, good things to come. I'm excited to be getting on with it. will keep posting progress as the build comes along.
Cheers,
Bon
so far I have obtained pretty much everything I need other than an ecu and injectors. and it is a far cry to find parts for a Z31 out here in the United Arab Emirates... however, last week I pulled a complete turbo assembly, piping, exhaust manifold, idle control valve, air bypass valve, valve covers, and cross-member from a JDM VG20ET out of a 200Z and other misc. turbo parts. the turbo on the early Z31 is not a T3, but a Garret TB250. looks to be a bit smaller, but not as small as a T25. I'm not quite sure how much boost this little turbo was designed to run, but I can't imagine that is any more than 6 - 7 psi. I hope to have some pictures and maybe even a video posted soon.
the state of my current n/a motor is being rebuilt to address the oil burning issue that had been occurring previously. pistons are fried and rings coming apart on cylinder #4.
I'm fine with the 9:1 compression for a stock turbo setup, however the new pistons and rings going in are oversize (50 mm) so I don't know how much that will affect the compression. hopefully that won't create any issues. of course, I need to get the engine back together and perform the break-in period for the new components. after that is all completed, then I will start the NA2T process. since I am only looking to do a stock turbo configuration, I am thinking about getting a CM 2.5 exhaust pipe from the down pipe to the cat. won't be intercooling at this time, however as the hot summer comes soon, it may be necessary to keep things a bit cooler and safer for the engine.
one thing that I didn't remove from the VG20 was its oil cooler assembly and the oil pan. I think I will have an oil feed nipple welded to the my stock pan. I would hope that the stock oil cooler would aid in helping cool the oil especially for the turbo which unfortunately is not water cooled.
so, good things to come. I'm excited to be getting on with it. will keep posting progress as the build comes along.
Cheers,
Bon
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