mr2 Engine swap recommendations

[Airthrow]

Hey guys, I forgot about this thread, I really appreciate the responses. I think I would keep it within the MR2 family as someone recommended. How much would that cost?

[Bill Strong]

to do a 3sgte properly would cost is the range of $5000, maybe less. Carl Crawford at www.speed-source.net was charging $5000, that included the labour and the 1/2 clip. He does an awesome job as well.
Go to www.mr2oc.com, register and do some reading and searching. All of your answers are there.
In fact you will see that the trend is getting away from the 3sgte and moving to the late model 24 valve V6 engines. Paul Woods has both a V6 MK1 and a 3sgte(gen3) MK1.5, and says the V6 is much faster and much more enjoyable to drive. So much so that he sold the MK1.5.
Also the Ultimate Street Car Championship was just won by a V6 powered MR2 owned by Brad Bedell http://bedellracing.home.comcast.net/uscc.html
You can see my sticker below the side vent

[Airthrow]

Thanks a lot Bill, I really respect your work.

[TEXSRT4]

turbo the supercharged motor!!! thats where its at. as long as you can get a standalone computer to control everything, thats the way to do it. the supercharger effectivly increases the size of the engine. that allows you to run a larger turbo than normal (which means more power) plus lag is minimal because you are running on the supercharger! the turbo also spools quicker, due to more air flowing into and therefore out of the combustion chamber, AND the s/c creates a large vacumme force which spools the turbo quicker. and once the turbo spools, it stuffs air into the supercharger, negating the parasitic loss of the s/c (if it doesnt need as much force to compress the air, it wont bog the motor)

the only hard part of this set up is the tuning. but if you have a stand alone engine management system and access to a dyno, it wont be that killer.

[Renesis]

turbo the supercharged motor!!! thats where its at. as long as you can get a standalone computer to control everything, thats the way to do it. the supercharger effectivly increases the size of the engine. that allows you to run a larger turbo than normal (which means more power) plus lag is minimal because you are running on the supercharger! the turbo also spools quicker, due to more air flowing into and therefore out of the combustion chamber, AND the s/c creates a large vacumme force which spools the turbo quicker. and once the turbo spools, it stuffs air into the supercharger, negating the parasitic loss of the s/c (if it doesnt need as much force to compress the air, it wont bog the motor)

the only hard part of this set up is the tuning. but if you have a stand alone engine management system and access to a dyno, it wont be that killer.

wow

you're thinking of compound turbocharging, where two hairdryers are placed inline instead of parallel. if you try doing that you're going to get something around 50psi of boost (8 x 8 - 14.7norm)

thats too much boost buddy

[TEXSRT4]

ahh, but the issue here is you cant compoud the boost. all boost is is a measurement of resistance. you have to think CFM or amount of air flow. PSI-FI motorsports makes a setup for the minicooper type s. stock s/c puts in 10psi, plus 9psi on a turbo. total boost is 22psi. the supercharger doesnt double the amount of boost, it just increases air flow. the turbo ends up moving more air. picture it, not as a multiplier of boost levels, but a multiplier of engine displacement

[Renesis]

ahh, but the issue here is you cant compoud the boost. all boost is is a measurement of resistance.

i dont really understand what you're trying to say, but maybe thats just the texasness. but i think you're somehow confused with sequential forced induction. its never done sequentially with a supercharger, but it is with turbo's. i've never heard of mixing the two.

-boost is a measure of pressure after the point 14.7psi by the way

[TEXSRT4]

its been done on everything from MR2's to mustangs, infact PSI-FI has kits for the supercharged cobalt/saturn ion redline, and the minicooper type s.

there is also a srt4 twincharge system on the drawing board too

[TEXSRT4]

oh and there was a type R integra that is running around with this setup too!

[TEXSRT4]

it has been done more than once. like i said, i can buy a kit right now for the mini cooper or the ion redline.

you can only measure boost by the resistance it causes. its a difference between pressure and volume. boost is pressure, cfm is volume. volume is whats important.

the supercharger spins at a set rate compared to the motor. its connected mechanically to the crankshaft (pulleys and belts), so it can only spin so fast at a set engine rpm. if it is sucking air directly out of the atmosphere, it pressurises it to say 10psi. its making 10 lbs of boost. well if its not sucking air out of the atmosphere but out of a pressurised tube (tube presurised by turbo at say 15psi) it can only move it into the engine. it doenst compound the boost (10psi x 15psi) instead the turbo pressurised it to 15psi and the supercharger only adds to it a little bit more, do to the spinning blades (10psi - however this is due more to efficiency of supercharger and motor) so you get a total of 25psi into the motor.

and just because you havent seen it done doesnt mean that its not done. its expensive to setup, but it is done. infact sportcompact car in one of their USSC competition ran an MR2 with both. its very effective once you get it working.

i know the sequential turbo setup, i have built more than one supra. no, this is a totally new idea, and only a few people understand (if people dont understand they are hesitant to try it) or run it.

[TEXSRT4]

here is information right off of the HKS website: http://www.hksusa.com/FAQ/?id=1596

here is the superstreet magazine article about the car: http://www.superstreetonline.com/fea...618/index.html

if anyone is too lazy to read all of that, heres the important stuff:

These days, it seems as though turbocharged Integras are about as common as bad reality-based TV shows. This Integra's S2000-inspired starter button lights the wick on a 1.8L motor that's supercharged and turbocharged. Jon Kuroyama of HKS borrowed from the company's now defunct twin-charger MR-2 product to inspire the engine development of this Meguiar's Integra project. Using a small, pulley-driven, roots-type compressor that's pumping about 4.5 pounds of boost, the blower minimizes lag and improves the engine's low-speed response.


Meanwhile, on the exhaust end, an HKS 2835 turbo is tucked under a stainless steel exhaust manifold, delivering about 16 pounds of intercooled boost to the supercharger. So, we're toying with about 20 pounds of boost on what's still a stone stock Type R B18C motor with 11:1 static compression.

[xero]

the stuff yall are sayin on here is crazy. you have no idea how much i wish i could afford all this. though being only 17 thats gonna be kinda hard for me to accomplish. i love my lil MKII, my friends are constantly tallin me that i know to much about my car and that i need to find a life. id love to give it the power it deserves but i guess i cant really give it everythin ya know.

yall got any ideas for somethin i could put together for about 2k - 2.5k?
id love to hear them, as well as any other wisdom yall would like to impart on me.

and just as a forward, i apologize for my ignorance, i am only 17 and have just recently gotten into tunnin my tuner

[LandQuail]

Didn't read all the thread, but I read enough to know we need a Honda Type-R engine in there a' la Sun International Elise. That's the ticket.

[P4g4nite]

its been done on everything from MR2's to mustangs, infact PSI-FI has kits for the supercharged cobalt/saturn ion redline, and the minicooper type s.

Most (almost every) twin charge systems have the S/c on a clutch that uncouples it as it leaves the low rpm comfort zone. If you are speaking of a S/c feeding a turbo thats a rare setup.
At high rpm a S/c heats air up a lot and turbos aren't designed for that kind of abuse.

i know the sequential turbo setup, i have built more than one supra. no, this is a totally new idea, and only a few people understand (if people dont understand they are hesitant to try it) or run it.

It isn't a totally new idea, S/cs and turbos have been around for decades and every combination has been thoroughly experimented with.
A S/c(common roots type moreso) makes air very hot, a S/c fed by turbo would transport you to the wonderful land of detonationville.

And no a "stand alone engine management system" won't magically solve all your problems.

[amoral]

I'm also kinda new with things, (just got my MR-2 a couple days ago.) Has anyone ever toyed with the idea of throwing either the '00 Celica 1.8. It can spin up pretty fast with minimal work. High RPM power with low RPM economy is useful. Or perhaps the Scion tC's 2.4? Both get more naturally aspirated power than the 3S-GTE without a turbo. Throw on the boost and your ready for power. And they are smaller than a Camry or Solara V-6 so the installation may be easier.