WHats the best engine for the mr2?

[gHeTtOAZNbOi206]

yeah what is the best engine for teh MR2 and ho wmuch would it cost. I'm talking bout the 2 gen mr2 i dont like that spider shit.

[bluetwo]

the stock us turbo motor (3sgte) has a lot of potential. there are a lot of people who have built their internals and put on bigger turbos running well over 300hp to the wheels.

if you have an na, a popular engine swap is to the 3rd gen jspec 3sgte/tranny. i'm not certain which, but this engine came with either the ceramic turbine ct26 or the ct20b, which has higher hp potential (about 300rwhp). you'd need to get a rear clip so you have all the wiring included. there are a lot of people over the on mr2 board who have done this swap and have better info.

[94mr2turbo]

My car actually came with the 3rd Gen 3S-GTE (my car was imported from Japan 2 years ago), and I would definetely recommend it over the 1st or 2nd Gen 3S-GTE. The 3rd Gen 3S-GTE is the exact same engine that was found in the ST205 Celica GT4, the only difference is the intercooler (many MR2 owners in Aus have swapped their NA engine for GT4 engines). I think the engine makes more power in the Celica because of the top mounted intercooler. The turbocharger is just a newer version of the CT26, I'm not sure what the difference is (because I blew mine anyway).

The 3rd Gen is also MUCH easier modify, mainly because it uses a MAP sensor rather than the restrictive "flapper" type airflow meter to determine load. Which means less inlet restriction and also allows for non-recirculating BOV's to be used.

As for potential, the 3S-GTE is one of the best 4cylinder engines to modify that's come from Japan, because of its Racing history (rally etc). Most of the Japanese Toyota Supra racing cars use the 3S-GTE rather than the 6 cylinder 2JZ-GTE, which must say a lot about the engine.

bluetwo, what's the difference between the CT20b and the CT20? I've heard of the CT20 from the 1JZ-GTE (Soarer), but not the CT20b.

[bluetwo]

here is a thread on the mr2 board where people discuss it...

ct20: turbo used on toyota trucks in the late 80's
ct20b: updated version used in mid-late 90's on gt4 and mr2 applications (maybe more, like soarer?)...

http://www.board.mr2faq.com/showthre...ct20+and+ct20b

[MR Yasir]

The supra motor used in the JGTC is the 503E. No relation to the 3SGTE other than they are both 4 cylinder and turbo.

I think the best I4 from japan for high hp applications is the mitsu 2 liter turbo in the eclipse, and lancer evo. I mean you get like 270+ hp in stock form in the Evos.

[94mr2turbo]

Originally posted by MR Yasir
The supra motor used in the JGTC is the 503E. No relation to the 3SGTE other than they are both 4 cylinder and turbo.

I think the best I4 from japan for high hp applications is the mitsu 2 liter turbo in the eclipse, and lancer evo. I mean you get like 270+ hp in stock form in the Evos.

The Tom's GT-500 Toyota Supra, driven by Wayne Gardner in the JGTC is powered by a 3S-GTE. It makes 470hp at 6000rpm and 469 ft/lbs of torque at 4500 rpm. If you don't believe me, just go to:

http://www.waynegardner.com/career/f...ub=gtsupra.cfm

The 4G63 (Lancer Evo motor), is also a very good motor for high hp applications, but is not any better than the 3S-GTE or SR20-DET and possibly the EJ20 (WRX engine). Don't think that the 4G63 is better simply because of the Lancer Evo's, the Lancer Evo is based on a rally car, which competes with the likes of the Toyota Corolla (3S-GTE powered), so they are actually quite equal.

[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.

[94mr2turbo]

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.

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.