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RX-7 2nd Gen Specific (1986-92) RX-7 1986-92 Discussion including performance modifications and technical support sections.

 
 
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Old 03-05-2011, 10:58 PM   #1
Pete_89T2
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Default Turbo upgrade project is almost done

Hey guys, just thought I'd share the status of my project. Back in early January, I posted a bunch of questions asking for advice when I was still in the planning stage, see reference link.

http://www.rotarycarclub.com/rotary_...ad.php?t=13101

The project is just about done now, the car is running quite well and the only thing left to do is drop in the new Surpa fuel pump, and head up to see Dave at KD/Speed1 this coming Friday to have him fine tune my RTEK on the dyno. So here's a summary of where I'm at and how it has turned out so far....

- Yanked out my engine to get easier access to the turbo and take care of fixing a few other items that are just easier that way (leaky oil pan gasket)

- Shipped the tired stock turbo out to BNR do a stage 1 rebuild & upgrade of my stock S5 turbo, see attached pics. Bryan did a great job of it, and I'm loving the new found boost.

- Sourced a set of 4 Bosch 720cc fuel injectors for pri/sec holes, replacing my stock 550's.

- Sent out my stock ECU for the Rtek7 v2.x upgrade, and did the initial setup.

- Picked up a Koyo N-flow AL radiator to upgrade the cooling.

- Ordered the previously mentioned Supra TT fuel pump, which is supposed to arrive by Tuesday. If I don't have time to drop it in before my tuning date at Dave's Friday, I'll have him do it for me. I hate working with fuel tanks anyway.

- While I was in there, I found that some of my OMP injectors were questionable, per the FSM test, so I replaced them all with new Mazda parts. Also needed new motor mounts, and replaced a bunch of those small & inaccessable coolant hoses.

Ran into a couple of minor pitfalls along the way (what project doesn't ), but nothing too difficult to deal with...

- Needed to trim one lower corner of the stock fan shroud (I still have the stock fan) to get it to fit right. Related to this, the stock air filter cold air snorkel can't be made to fit with the Koyo radiator installed due to interference with the filler neck. I tried trimming the snorkel with the dremel, but I can't get there from here.

- The Bosch FI's were difficult to seal to my primary rails; this was solved by sourcing slightly different size fuel compatible O-rings. I suspect they came with the wrong rings (SAE vs. metric).

- Also "while in there", I noticed my brake MC was leaking and had to replace it. Related to this, the fluid stripped some paint and I repaired the damage with POR-15. Good stuff, see this post for ref. http://www.rotarycarclub.com/rotary_...ad.php?t=13214

I'll let you know how it goes after Dave tunes it Friday.
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