I was pretty much watching a couple friends of mine rip apart a GTi-R motor. All I really could do was hold the head studs and main cap studs. The questions they're asking is if you would bore out the motor if you could still see the factory honing, or would you just hone the cylinders. IF you were to bore it how much without needing to resleeve the block. When the this motor is rebuilt who should they contact in order to get gaskets, ARP strength head studs, oil pump, water pump. Would a SR20DE timing chain work on this motor? Are the rods stronger than a regular DET? Thanks for any info you can contribute....Chris

Pulsar GTIR rods are stronger than regular DET rods. These rod should be good for up to 500 WHP. The SR20DE timing chain is the same as the GTIR. Get the VVL oil pump from JWT, you do not need to change the head studs they are a lot stonger than DE or DET studs and they are also bigger. GTIR head studs will be safe up to 26 PSI of boost. Get the gasket from JWT, HKS or Greddy. I think the water pump is the same not 100% sure. The largest you should bore the block without sleeving the motor will be 87mm.

If you need pistons I can get you JE pistons for $620 shipped including pins and rings. The compression ratio will be 8.3-1. That will be the same compression for 86mm ,86.5mm, or 87mm.

Thanks for the info Andreas. After taking this motor apart it became pretty obvious this is a hell of a motor. The other two guys that were there are 3S guys and were impressed with the motor. It really made the decision easier for me to go with the GTi-R motor in my NX. The weirdest thing is that, the motor we ripped apart had crankwalk. The crank would move side to side (ever so slightly) while still in the motor (easily done if you grabbed a counterweight and tugged on it). Have you ever heard of these motors having this problem? I was wondering if you could PM me a price on a GTi-R (no intercooler, comp, or wiring harness), I really don't want to go through SOKO to get one. I think he was over charged at $1900 for a motor with problems. Thanks again

my crank does that to, I thought there was something wrong, but was told not to worry about it by my fathers mechanic. is it supose to do that??

[QUOTE][i]. The weirdest thing is that, the motor we ripped apart had crankwalk. The crank would move side to side (ever so slightly) while still in the motor (easily done if you grabbed a counterweight and tugged on it). Have you ever heard of these motors having this problem?

Yeah heard that dsm motors have this problem in their motors. But from what i here it comes from using performance clutches and engaging the clutch pedal during start up. Has something to do with no oil circulating yet and wearing out thrust bearings, and i guess it can get worse, my friend said the engine he saw on a lift at mitsu dealership had about a inch or two of walk.:D

do you mean moving side to side, or turning easily. mine turns when I go to tighten the flywheel, and clutch. is it suppose to turn??

I was talking about the crank moving laterally (side to side). From what I have seen on a couple Toyota motors I've helped rip apart, this isn't supposed to happen. Motors have thrust bearings on #3 that are supposed to keep the crank from moving laterally. I was just wondering if this was a common problem with the GTi-R's as it is with DSM's that's all.

from what i've heard and seen, "crank walk" should be minimal.
If you've got the engine apart that far, replace all the bearings
and it should disappear. All cranks will have a minimum spec for endplay.

I would just like to mention that crankwalk is only a problem among 2G DSM's, 95-99, as these motors were assembled in Korea with lower quality controls.

90-94 DSM's, with their Japan-assembled motors, do not suffer crankwalk.

Swapping a 1G motor into the 2G DSM is starting to become popular for victims of crankwalk. the 90-92 motors have larger rods anyway that support around 500hp, in 1993 and after they switched to a smaller rod that isn't good for much more than 400hp.

The theories on crankwalk in 2G DSM's are many. IF the reason is that they were assembled in Korea to lower standards then why did Mitsubishi revise thrust bearings in the later years (1997) and that crankwalk has not appeared on 1998-99 years? The 4g63 is a great motor and I'm not knocking them. I was just wondering if this was a known problem with the 54C SR20DET.