MR2 or JDM GT4??? - 6G Celicas Forums

MR2 or JDM GT4???, both have a 3sgte...

Jan 23, 2004 - 12:25 AM
pbgcelica View Member Profile Enthusiast Joined Oct 21, '03 From Upstate New York Currently Offline Reputation: 0 (0%)	Aight, I have been reading a little, but between college and work, I haven't had enough time to read everything, so I don't know if this is a repost... BUT I was wondering if a 3sgte from a USDM mr2 (if a 3sgte motor available in it) is the same thing as a 3sgte from a JDM celica gt4... my thinking is that a 3sgte is a 3sgte is a 3sgte, but with the mr2 being a mid-engine it could change the engine around. OH and I am talking about a 3 gen. 3sgte from a 94 on gt4... Thanks for the help

Replies (1 - 19)

Jan 23, 2004 - 12:48 AM
OOBE View Member Profile Enthusiast Joined Aug 30, '02 From San Juan, PR Currently Offline Reputation: 4 (100%)	You answered your own questions! But the 3rd gen 3SGTE is totally different...and sexy...and juicy...and OK...I SHUT UP! -------------------- Past - 7A-FTE: Will never forget you Present - 3rd Gen 3S-GTE: Swap in progress QUOTE (SinisterSinner @ Dec 19, 2009 - 10:52 AM) I dont want to even think of turbos, they blow up way too often...

Jan 23, 2004 - 12:56 AM
snadman View Member Profile Enthusiast Joined Oct 1, '02 From Minnesota, USA Currently Offline Reputation: 0 (0%)	He's right. It basically all depends on the power! -------------------- 95 Toyota Celica GT Dead for now --> Soon to have a 3S-GTE 02 WRX --> This is for speed - Borla Exhaust - TurboXS BOV - Custom CAI 02 Civic EX - MB Quart Reference 5.25" Components - Rockford MTX 8" Subs in the doors - Alpine Type S Rear Fills - 2x Alpine SWR-1042D Subs in a custom fiberglass box - Alpine F345 Amp for the front doors - Alpine M605 on each Type R - Phoenix Gold wiring - Alpine CDA-9855 Head Unit - Alpine Amp link - 2x Rockford Fosgate 1 Farad Caps - The best Viper 791 alarm install ever

Jan 23, 2004 - 4:40 AM
kuya1284 View Member Profile Enthusiast Joined Nov 15, '02 From Corona & Vallejo, CA Currently Offline Reputation: 0 (0%)	For starters... there were no USDM MR2's that came with a 3rd gen out of the factory... There are quite a number of differences b/w the setup of the MR2 3s with that of the GT4. The motor itself is practically the same... but certain things are different...

Jan 23, 2004 - 10:15 AM
BigEdge169 View Member Profile Enthusiast Joined Nov 18, '02 From Texas Currently Offline Reputation: 0 (0%)	also, swaps have been made from both cars, so they are both feasable, it all just depends on your resources I guess

Jan 23, 2004 - 11:57 AM
boosted_K2 View Member Profile Enthusiast Joined Aug 30, '02 From Michigan Currently Offline Reputation: 0 (0%)	both motors will work, however there are differences. the USDM mr2 always came with the 2nd gen 3sgte. however this motor is still different than the USDM Alltrac Celica's 3sgte. the JDM MR2 3sgte motor (making 245BHP) still has differences from the jdm GT-4 motor. -------------------- Believer, you'll leave her, in leaving them all No but I don't buy it Like anything you do, as anyone you are Cause I'm... Ten Speed, of God's Blood & Burial

Jan 23, 2004 - 12:04 PM

boosted_K2

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this is directly pulled off the newbie forum on the MR2 owners club messageboard. these are the differences between the USDM gen2 MR2 motor, and the gen3 MR2 motor. THIS HAS NOTHING TO DO WITH ANY GT-4 MOTORS.

QUOTE

FYI: Gen III Differences
- MAP sensor instead of AFM
- Bosch D-Jetronic (Gen III) vs. L-Jetronic (relatively primitive) engine management
- CT20b turbo replaces CT26
- Boost raised from 10psi to 13psi
- Fuel cut raised from 12 psi to 18 psi
- Different ECU
- 4 wire O2 sensor
- Shim under bucket valve shims
- slightly more aggressive cams
- Revised internals (pistons, con-rods etc.)
- Revised cylinder head cooling passages/water jackets
- Revised intake manifold (8 'independent long ports' reduced to 4)
- intake manifold inlet air temperature sensor added. i.e. after turbo and intercooler.
- Revised gearbox with close ratio gearing
- lower compression ratio
- stainless steel head gasket
- factory 540cc injectors replace 430cc injectors
- revised fuel rail with bigger bore and relocated pressure regulator
- TVIS eliminated
- EGR eliminated
- LSD in 80% of them
- throttle body increased from 55mm to 60mm
- inlet valve lift increased from 8.2 to 8.7
- intake manifold inlet air temperature sensor added
- Less restrictive exhaust elbow
- Aluminum oil pan
- more rigid alloy sump and additional oil baffles
- Factory Catch can
- Better Oil Cooler and relocated oil filter (bottom)
- 4 Channel ABS coupled with Traction Control available
- No. 1 compression ring described as 'stainless steel' instead of just 'steel'. Oil ring is described as 'stainless steel' instead of 'a combination of steel and stainless steel'.

--------------------

Believer, you'll leave her, in leaving them all
No but I don't buy it
Like anything you do, as anyone you are
Cause I'm...
Ten Speed, of God's Blood & Burial

Jan 23, 2004 - 12:45 PM
BigEdge169 View Member Profile Enthusiast Joined Nov 18, '02 From Texas Currently Offline Reputation: 0 (0%)	you'll also find that it will be much easier to find parts for the MR2 version because it is USDM, so parts will be more readily availalbe and most likely cheaper over here

Jan 23, 2004 - 12:53 PM
kuya1284 View Member Profile Enthusiast Joined Nov 15, '02 From Corona & Vallejo, CA Currently Offline Reputation: 0 (0%)	Please keep in mind that it won't necessarily be that difficult to get parts for a gen 3 motor. Some parts from the gen 2 motor can be used... others can be found from other cars. For example, the thermostat for a gen 3 is the exact same thing as the one they use in a Landcruiser... And to be honest... how often will you have to replace parts like that?

Jan 23, 2004 - 4:22 PM
jayi12-15psi View Member Profile Enthusiast Joined Jan 9, '03 From St. Louis Currently Offline Reputation: 0 (0%)	ummm, ct20b, ahhh <---- drool -------------------- [img]http://photos-081.facebook.com/n6/081/n15913038_30266081_3342.jpg[/img]

Jan 23, 2004 - 4:34 PM
boosted_K2 View Member Profile Enthusiast Joined Aug 30, '02 From Michigan Currently Offline Reputation: 0 (0%)	id personally rather get a TD-06 kit than a CT-20b, both are very sweet though. -------------------- Believer, you'll leave her, in leaving them all No but I don't buy it Like anything you do, as anyone you are Cause I'm... Ten Speed, of God's Blood & Burial

Jan 23, 2004 - 4:42 PM
Supersprynt View Member Profile Enthusiast Joined Feb 10, '03 From Connecticut Currently Offline Reputation: 11 (100%)	I didnt know stock boost on an MR2T was 10psi, its 8.5 stock on the alltrac's so what are the stock MR2T's pushing? (USDM) -------------------- My Flickr My eBay _Perpetual Aperture_

Jan 23, 2004 - 4:48 PM
boosted_K2 View Member Profile Enthusiast Joined Aug 30, '02 From Michigan Currently Offline Reputation: 0 (0%)	stock MR2 ranges from 8.6-10.0 PSI under normal conditions. ive also heard lots of people with just filter and exhaust mods, hit the fuel cut from boost creep... -------------------- Believer, you'll leave her, in leaving them all No but I don't buy it Like anything you do, as anyone you are Cause I'm... Ten Speed, of God's Blood & Burial

Jan 25, 2004 - 3:26 AM

jgreening

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QUOTE (kuya1284 @ Jan 23, 2004 - 5:53 PM)

Please keep in mind that it won't necessarily be that difficult to get parts for a gen 3 motor. Some parts from the gen 2 motor can be used... others can be found from other cars.

For example, the thermostat for a gen 3 is the exact same thing as the one they use in a Landcruiser...

And to be honest... how often will you have to replace parts like that?

My question is what about the parts that are replaced often? e.g. belts, hoses, oil filter, etc....If I go with a gen 3 swap, will I have to import these things? If so, are they readily available and how long does it take? Also, assuming that I went with a gen 2, would I have the same problems if I went with a jdm rather than usdm?

--------------------

QUOTE(lagos @ Jul 10, 2006 - 1:55 PM) [snapback]454118[/snapback]

i know your trying to do the right thing for your motor, but this is one of those times where you should just trust the guys who have had their swaps for a while and have done a ton of research into this.

Jan 25, 2004 - 3:33 AM
Supersprynt View Member Profile Enthusiast Joined Feb 10, '03 From Connecticut Currently Offline Reputation: 11 (100%)	keep inmind that the US had the 2nd Gen Alltrac, so if you get a 2nd Gen 3sgte, parts are all availabe in the US. If you get an ST205 3sgte then I do believe your going to have to look else where for parts. -------------------- My Flickr My eBay _Perpetual Aperture_

Jan 25, 2004 - 4:57 AM

kuya1284

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QUOTE (jgreening @ Jan 25, 2004 - 1:26 AM)

QUOTE (kuya1284 @ Jan 23, 2004 - 5:53 PM)

Please keep in mind that it won't necessarily be that difficult to get parts for a gen 3 motor. Some parts from the gen 2 motor can be used... others can be found from other cars.

For example, the thermostat for a gen 3 is the exact same thing as the one they use in a Landcruiser...

And to be honest... how often will you have to replace parts like that?

My question is what about the parts that are replaced often? e.g. belts, hoses, oil filter, etc....If I go with a gen 3 swap, will I have to import these things? If so, are they readily available and how long does it take? Also, assuming that I went with a gen 2, would I have the same problems if I went with a jdm rather than usdm?

Oil filter.. same

Timing belt... off by one tooth, but can still be used. ToyotaWorld can get the gen 3 belt tho.

Hoses... not even an issue...

Jan 25, 2004 - 4:01 PM
Doge View Member Profile Enthusiast Joined Dec 2, '02 From Portland, Oregon Currently Offline Reputation: 0 (0%)	If you get a 2ng gen, ALL parts will be available in the US. A very big deciding factor for me on which gen to get. Its just alot less hassel and you will always know that you can get a part without searching the world twice over.

Jan 27, 2004 - 12:38 AM
XXX_Mina View Member Profile Enthusiast Joined Jan 8, '03 From Miami, FL Currently Offline Reputation: 0 (0%)	i have mr2 engine and tranny in my baby.... look at sig, and/or profile... fits pretty well. works pretty, well. stock boost is 10psi, turned it up to 18, then overboosted and cracked a piston

Jan 27, 2004 - 1:06 AM
boosted_K2 View Member Profile Enthusiast Joined Aug 30, '02 From Michigan Currently Offline Reputation: 0 (0%)	... whatd you have your FCD set at?? rule of thumb on the MR2 boards is not to push it past 14-15PSI with a 17PSI fuel cut untill doing some upgrades to the motor... theres other ways to make big HP on those motors rather than just cranking up the boost. -------------------- Believer, you'll leave her, in leaving them all No but I don't buy it Like anything you do, as anyone you are Cause I'm... Ten Speed, of God's Blood & Burial

Jan 27, 2004 - 2:44 AM

kuya1284

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QUOTE (boosted_K2 @ Jan 26, 2004 - 11:06 PM)

... whatd you have your FCD set at?? rule of thumb on the MR2 boards is not to push it past 14-15PSI with a 17PSI fuel cut untill doing some upgrades to the motor... theres other ways to make big HP on those motors rather than just cranking up the boost.

I think that if he was running water injection, he would've been alright... but 18 constantly is a lot! I agree... 14 to 15 is all the motor can handle with the crappy piss water gas we have here in the states... with a stock 3S...

This post has been edited by kuya1284: Jan 27, 2004 - 2:45 AM

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