Quote:
Originally posted by MR Yasir
I know that toyota (and other teams) state that the 2 liter motor is a 3S-GTE but it's really not. It's a 503E. This has been argued about numerous times on the MR2 owners board and it was finally proven by a board member who posted a website about it. The two motors are similar, both are 2 liter, both are turboed, both are 4 cylinder, but that's it. The block, pistons, crank, etc. are completely different in both motors. You can buy a 503E from toyota for around $15k-$20k.
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Are you sure that it's just not originally based on a 3S-GTE? Is it possible that the 3S-GTE was developed into the 503E (for racing purposes)?
It's very easy to get confused on the matter, since a few Japanese modified cars (Supras), like the Top Secret one, are installing 3S-GTE's into their Supras and are claiming that it's based on the JGTC car.