JapCarForum Car Manufacturers Lexus/Toyota IS200 / IS300 / SPORTCROSS / Altezza Modifications & Tuning quick question

quick question

quick question

mattlaw
Senior Member
572
31-10-2016, 06:56 AM
#1
next year im looking to turbo my is300, im not looking for massive boost but i want to upgrade my internals just to be on the safe side, does anybody know if its true that that the turbo supras had forged internals or not? as ive come into possession shall we say of a set of con rods and pistons and a crank lol
mattlaw
31-10-2016, 06:56 AM #1

next year im looking to turbo my is300, im not looking for massive boost but i want to upgrade my internals just to be on the safe side, does anybody know if its true that that the turbo supras had forged internals or not? as ive come into possession shall we say of a set of con rods and pistons and a crank lol

Sparkystav
Administrator
14,683
31-10-2016, 07:16 AM
#2
they'll certainly be better internals than the NA version im sure

OutlawJapClub Admin Team
Sparkystav
31-10-2016, 07:16 AM #2

they'll certainly be better internals than the NA version im sure


OutlawJapClub Admin Team

steviewevie
Posting Freak
7,993
01-11-2016, 09:49 AM
#3
I am only guessing but I doubt they're forged, but will be better internals as Stav said. They will be designed for turbo installs, i.e. probably lower compression ratio pistons.

[Image: Sig-enginebay.jpg]
IS200 Turbo project now just about complete ! See my thread here and leave your comments.
Now running standalone Syvecs ECU and no stock ECU !
steviewevie
01-11-2016, 09:49 AM #3

I am only guessing but I doubt they're forged, but will be better internals as Stav said. They will be designed for turbo installs, i.e. probably lower compression ratio pistons.


[Image: Sig-enginebay.jpg]
IS200 Turbo project now just about complete ! See my thread here and leave your comments.
Now running standalone Syvecs ECU and no stock ECU !

russelllinn
Posting Freak
1,034
01-11-2016, 10:12 AM
#4
I don't think there is a lot of difference to be honest, maybe the crown as Steve says, although the GTE block has a thicker head gasket to help with compression ratios. The main difference is that the GTE block has oil squirters to keep things cooler, I have read about people in the US running 600bhp without probs on stock NA internals.
I was/am looking at 400bhp turbo conversion with no internal mods and running on same compression ratio!
russelllinn
01-11-2016, 10:12 AM #4

I don't think there is a lot of difference to be honest, maybe the crown as Steve says, although the GTE block has a thicker head gasket to help with compression ratios. The main difference is that the GTE block has oil squirters to keep things cooler, I have read about people in the US running 600bhp without probs on stock NA internals.
I was/am looking at 400bhp turbo conversion with no internal mods and running on same compression ratio!

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