Why not the 5SFE?

[TRD-CEO]

Nice read. Short...to the point. Still wanna do something with it, but looks like a swap is in the works.

[Weasy2k]

swap...from what?

[mrturrari]

Originally Posted by 93smgturbo

Lack of aftermarket parts and the inability for the 5sfe to handle boost in stock form. The motor would need a rebuild with stronger internals. And the head and cams flow like crap so you would need cams and some serious work done to the head to get it close the ability of a stock 3s head.

Definitely lack of after market parts caused by a small demade for these motors but the motor itself handles boost just fine and the internals are strong enough to handle gobs of power. Anyone that tells you the internals are weak is dead wrong. Power is not the motor killer, bad tuning is. The biggest things holding back the 5sfe is the stock computer and fuel system. It just isn't adaptable enough for most forms of forced induction. There are some combinations of parts that can be made to work but nothing that is very tunable.

[mrturrari]

Originally Posted by Weasy2k

its everywhere...the 1uz guys mention this problem a lot...the cam starts to wear.

Think of this.

the stock cam is made from hardened and treated metal

rewelding them larger then grinding them to new profile is just a basic metal it will wear away quicker. You can harden each cam if you want..then your paying more for a bit extra life...

This also seems off to me. In a motor the metal parts should never be coming in direct contact with each other because of the oil, hardened steel or not. The only time this might not be true is during cold starts but even then their should be a thin film left over if it hasn't been too long since it was running last. If this were not true the aluminum cam journals would wear out very quickly.

[Mr Deuce]

Originally Posted by BRAUVIC

The pic I have is from the net. I just thought it was one of the cleanest bodykits for the 2 I have seen in a while. Aside from the Veilside and the 2000GT that Toyota makes. I don't even know if this kit is real, it sure looks good. Here, I'll post pics of it.

yes it is computer generated but i beleive they are attemting to design an actual kit based of this model. GRT aerodynamics. they already have another kit out for the mr2 which you might like


as for the 5sfe thing... as stated earlier theres not a good market for it.

Most of us would be willing to spend around 1500 tops on a SC kit...anymore than that and its more cost effective to upgrade to a 3sge/3sgte.

[Weasy2k]

Originally Posted by mrturrari

This also seems off to me. In a motor the metal parts should never be coming in direct contact with each other because of the oil, hardened steel or not. The only time this might not be true is during cold starts but even then their should be a thin film left over if it hasn't been too long since it was running last. If this were not true the aluminum cam journals would wear out very quickly.

The oil prevents resistence...it does not mean there is a 80lb force pushing back up on the cam.

It is words taken directly from people who own and used them...

Thats why toyota has hardening on the cam from the factory. Plus the cam isnt rolling per say as it has to hit the lifter (very minor but it does happen) and impacts are a lot more aggressive then rotating.

Of course there are mixed reviews and im not saying ALL of rewelds would do this. It depends on the shop that makes them.

As for the 5s

The 3s swap cant be done for under 1500 unless your doing it yourself....even then..tranny, engine, axles, hubs, shifter linkage...etc all have to be changed...
Have a shop do it and the cost SKYrockets.

Your kinda dreaming to have a s/c kit go for under 1500....that includes a intercooler and all the proper piping etc...

[Sirc]

Because it wasn't meant to be a performance motor. It has a lot of disadvantages and those who do make it work, do so just to prove a point. It's like twin charging a motor.

That being said, NA is best.

[Mister2.2]

I'm still not so sure on the cam wearing down fast.... a weld should be stronger than the metal to begin with so I don't see why it would not last any longer than a stock cam...

[mikeswickednick]

i dont know if it was said but there really isnt to much room for an roots charger in the 5sfe


and that orange car, is a horrible cgi animation

[Mister2.2]

Horrible, how so?

[Tyler H]

Originally Posted by BRAUVIC

If they can do this to a Honda why not to the Toyota? Anyone?

Because, even Honda's ****tiest engine is designed to rev. The 5sfe is ideally suited to the Camry...it would also make a good inboard boat motor or maybe a tractor. Anything where you want to make torque at one rpm and just stay there.

[TomsMR2]

oh yeah, making torque is a bad thing

i had a 20v mk1. all top end. ill take a 5sfe over that. id rather make power now than have to rev to the moon before anything starts happening.

[Weasy2k]

Originally Posted by Mister2.2

I'm still not so sure on the cam wearing down fast.... a weld should be stronger than the metal to begin with so I don't see why it would not last any longer than a stock cam...

Cast Steel vs Mild Steel...

you can go as far as adding a hardener to the welded cam which will bring you into a longer term durability level but then you just made the cams price rise a whole bunch.

If i had a buy in of 30 people for 5s billets i would invest in the 100 sets i need to get them done...thats the best way to go but finding 30 people...

[SpeedballTrix]

Wow, there are like 500 topics in this thread, lol.

On the origincal topic: You can do that. if you combine the engine bay and the trunk. It's been done before and doing it with an SC like in the pic would be very unique and also very cool... but not even close to the best bang for the buck.
Honestly if you have cash you should have one of the the V6 guys build you a Turbo V6. It'll give you alot more power than stock with a very high potential for reliable power.

On the SC kit that was linked in a previous page that Im too lazy to go back to: That kit is a ripoff and that site was made by a four year old or an idiot.
Apparently not only is there a 1990 MR2 but it was a Spyder!

On the orange CG MR2: That kit is sick, but the wing is hideous.
If someone produced that kit minus the wing I would buy it.

On NA vs FI: Given the exact same motor and an unrestricted budget and talent base the motor with forced induction will win.
However, if you have a specific power goal in mind (such as is often the case in racing series') and you can meet it with N/A than's probably the best path.

On low end torque vs high end power: Torque is for trucks. If you're driving a sports car and you can't be bothered to downshift into the power go get a Camry. If the cars stock gearing is just too wide to take advantage of the powerband than that's an engineering mistake and you should get a different car, replace the diff or tranny, or extend the powerband through tuning.

Yeah, I think im done *****ing now =P

[Mister2.2]

Torque is for trucks? Horsepower sells cars, Torque wins races.

[TomsMR2]

look how much torque supercars have.. look at the HUGE enormous expense thats been put up by these high end companies for R&D to absolutely maximise low end torque.. the new 911 turbo is a great example of sportscar engineering to get the most low end possible on a sporting setup.

saying "torque is for trucks" is rediculous.

[SpeedballTrix]

I guess thats why every successful production based race car in history has had more bore than stroke...

Oh wait... no.

[Weasy2k]

torque for trucks?

Torque gets you moving why have little of it when having a good amount will improve accell times.

[TomsMR2]

yeah 5000rpm idles are fun. racecar building is COMPLETELY different than making a street car.. nice try, but try again.

[SpeedballTrix]

I guess every race builder on the planet must be wrong.
You should go build your torque only racecar and go take out every professional racer in the world. You'll make billions.