Turbo BS Thread

Makes me think the 2TR crank is more stout, with 5mm less width on the crank journals

 

Makes me wonder if the crank is the "same" dimensions, judging by the diameter similarities. They might have just made the rods narrower?

Could be a whole different crank. We'll hopefully find out in the other thread.

On my 1GR, there was a large gap between the sides of the rod, to piston, where the wrist went through the small end. Allows a lot of play. Sometimes that play will be on the crank end.

 

Is it safe to assume the 2TR isn't as stout, stock, as the 3RZ because it has 5mm narrower rods?

 

Hopefully the machinist can answer your question.

 

Dude should change his handle to tHeMaChInIsT

 

It's hard to say whether its more stout or not. Could be using a different alloy in the rod that is stronger, since its a newer generation. I have not seen anyone go over 300 without swapping rods and pistons yet, so idk for certain

 

I don't know if +5mm will fit

EDIT:
IDK, it may- compare the wear from this 3RZ

 

Hard to see the second one, but it does look to be very close. Only a mic will tell

 

Crankshaft:
3RZ
13411-75020
2TR
13401-75020

 

wonder what the 1 means hmm...

 

right, maybe is same or maybe not
I guess if the stroke is the same, it's lobed the same?

 

That 3RZ part number has been replaced by 13411-75901.

 

Here is a local guy... Time for boost i say

 

Could I be creating a conflict in the wiring if I did the rear o2 sensor mod before and when I wired in the aem fic I also did the rear o2 sim in the harness.

 

I put it under my name haha

 

Well, verdict is crankshafts are definitely different.
3RZ rods could be installed if small end is ground down from 25.81mm to fit between the bumps, which is 21.15mm. The 2TR rods are 20.83 wide, so no loss in strength there.

 

lol awesome

 

Dear God I would not want to grind 5mm off! I would just hard mill it and leave like .05mm on each side to finish grind.

If they're 4340 or 4140 or anything like that shouldn't be too bad to do

 

I said grind, but meant mill. Yeah, 2.44 off each side should do the trick. I'd have to pay a shop to do it, of course... I don't have a mill YET