Hi there! I'new to to this forum but not with mazda's stuffs. I own 93 Mx3 with BPT GTX, 96 MX3 KL turbo but I want to show the work on my 323 GT-R.
So, to make an intro, the car is a 93, I bought it in august 2008. It was bone stock. So I started the work 2 weeks later. This car is dedicted to performance, so all mods were to make the car going faster.
The first mod was to build a 3" stainless exaust. The stock exaust was 1"7/8 and this is what was limiting the boost to 9psi. Right after that the boost went to 12 psi by itselt. Bypassing the boost solenoïd added 2psi, so at that point it was to 14psi.
Next step, I installed wideband AFR to read what the stock ECU was doing with the air/fuel mixture. Then I installed manual boost controller and raised the boost to 20psi. I ran the car for the rest of the summer without any problems.
Last winter, the car has been stored, so I pushed the work further. I installed larger FMIC, removed the engine, installed custom clutch and proGT flywheel. I also switched the BP26 head for a rebuilt BP05 one. Of course I swapped the sodiums valves. Then I installed MS with 400kpa MAP sensor fitted and launch control, installed MSD HVC 6 box with HVC coil. I also removed the MAF. I added a monster tach along with digital pyrometer.
For the wheels, I took the mags thaat came with the car and fitted a set of shaved Toyo RA-1 tires. I bought spyns wheel/falken rt615 for daily driving.
This spring, I raissed quickly the boost to 25 psi tuned to 11.5:1 of AFR. I blown the turbo, it was already bypassing oil when I gor the car so it wasn't a surprise that much. I must be a lucky guy cause I onw 3 of those, so I installed a spare one and pushed the limit a little farther and peaked up the boost to 30psi. Result: I melted piston no.4. I'm lucky I was datalogging and passed 28 psi, you need water injection cause the air intake was over 125 degC. Again, I removed the engine and started a rebuilt. Now the block is 0.040" oversized with JE pistons. All seals were already changed but this time I changed stock bearings for race ACL one.
Now the pictures:
The start
The exaust muffler, I'll take more pictures of under the car for the rest of the exaust line.
The interior
The engine bay
The dead piston
New 9:1 0.040" oversize JE piston
The FMIC
The finish
So, to make an intro, the car is a 93, I bought it in august 2008. It was bone stock. So I started the work 2 weeks later. This car is dedicted to performance, so all mods were to make the car going faster.
The first mod was to build a 3" stainless exaust. The stock exaust was 1"7/8 and this is what was limiting the boost to 9psi. Right after that the boost went to 12 psi by itselt. Bypassing the boost solenoïd added 2psi, so at that point it was to 14psi.
Next step, I installed wideband AFR to read what the stock ECU was doing with the air/fuel mixture. Then I installed manual boost controller and raised the boost to 20psi. I ran the car for the rest of the summer without any problems.
Last winter, the car has been stored, so I pushed the work further. I installed larger FMIC, removed the engine, installed custom clutch and proGT flywheel. I also switched the BP26 head for a rebuilt BP05 one. Of course I swapped the sodiums valves. Then I installed MS with 400kpa MAP sensor fitted and launch control, installed MSD HVC 6 box with HVC coil. I also removed the MAF. I added a monster tach along with digital pyrometer.
For the wheels, I took the mags thaat came with the car and fitted a set of shaved Toyo RA-1 tires. I bought spyns wheel/falken rt615 for daily driving.
This spring, I raissed quickly the boost to 25 psi tuned to 11.5:1 of AFR. I blown the turbo, it was already bypassing oil when I gor the car so it wasn't a surprise that much. I must be a lucky guy cause I onw 3 of those, so I installed a spare one and pushed the limit a little farther and peaked up the boost to 30psi. Result: I melted piston no.4. I'm lucky I was datalogging and passed 28 psi, you need water injection cause the air intake was over 125 degC. Again, I removed the engine and started a rebuilt. Now the block is 0.040" oversized with JE pistons. All seals were already changed but this time I changed stock bearings for race ACL one.
Now the pictures:
The start
The exaust muffler, I'll take more pictures of under the car for the rest of the exaust line.
The interior
The engine bay
The dead piston
New 9:1 0.040" oversize JE piston
The FMIC
The finish
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