EDIT - I wanted to leave this complete build thread untouched to show the slippery slope of the GTR build / restoration process. How sometimes things can go from mild to totally wild when attacking nearly every problem with the "while I'm in there" and "do it right, do it once" philosophies.
Just so you know, this project ends with a completely new 2.75L stroker engine on a BW EFR 8374 turbo...but it's a fun and informative read throughout. AND It's still under construction.
*******************
Greetings from up over?!
While I'm new to the GTR world, I am not new to cars. Actually I had recently sold my MKIV Supra Hardtop TT and went to look at a used R35 GTR that a local guy had for sale. I was SHOCKED to see his shop and found that he had two R32's just collecting dust. I asked some questions and we struck a deal on a Grey 1990 R32 GTR. The car had a slight intermittent rod knock in the higher (4k) rpm range and just coming from a TT inline 6 DOHC engine I figured it wasn't anything I couldn't fix. So I bought it, brought it home, and cleaned it.
So far the car looks to be in EXCELLENT condition with no signs of wreckage or anything. I am amazed that it made it to the US so recently in such good condition. This car will be 25 years old and will then be legal to drive here in the USA in Jan of 2015 so in the meantime I'm giong to address the rod knock issue and build up the car. Expect some pictures and information to follow in this thread.
First night was diagnosis of AC issues. Previous owner had cut the wire to the relay and wired it to a switch to force the AC on. I fixed this wiring properly and ran through the diagnosis on the AC setup. I found that I had issue 25 (sun sensor...typical), ALL of the 3X codes (31, 32, 34, 35, 36), and an out of range sensor for the suction air temp. I fixed the suction air temp with a 2.2k resistor I had and investigated the "mode select actuator". It was stuck fully extended to the DEF position and I helped it return back to the other positions manually. After pulling it apart I found that it had one broken gear tooth at the all the way extended position and I figured it was something I couldn't fix. I found the KUDOS MOTORSPORTS website and ordered the part. While I was on the website I saw that the GT2860 -7 turbos were apparently on sale for cheaper than I can get them stateside so I picked up a new pair of those and a pair of the spitfire coils (I hear they go bad as well). I'm sure they will make for a VERY fun street car.
I also realized that the car's ignition key didn't work with the doors or trunk so I took them apart, found that by switching the tumler parts around that I could use 5 of the 8 and still use the ignition key for the doors so I got them working 100% for $0.
My plans so far are to pull the engine this weekend and start the tear down so I know what I need to repair and to address the crankshaft issue (collar installation) at the machine shop. If all the bores check out good (I'm sure they are the car runs great), then I will order some factory bore size 86mm forged pistons for the engine and likely cheaper conrods (might as well put some manley or eagles for the extra insurance).
I tuned my MR2 turbo road race car (4th season straight sill kicking!), on an APEXi Power FC and hand commander, but I think I would likely go full Haltech PnP this time around as a laptop tune is so much easier to do. I learned the lesson on high boost and ceramic turbines with this car. Actually I learned that boost isn't all there is to high rpms...they eventually just overspin from freeing up the flow of the engine despite keeping boost under a set psi. Yep my ceramic wheel vanished and the car has since received a billet precision 557E turbo (which may be an AWESOME super-responsive turbo for a GTR if anyone would try it sometime?).
Any advice or input will be appreciated greatly. Also I'm thinking of dumping HICAS while I've got the engine out and wanted feedback on how far I can go with this while it's out.
Thank You,
Patrick Harris