Topic: turbo charged

[wadeky]

I know the turbo motors have 7.5 to 1 compression . My question is can you turbo charge a 22r with the stock 9.0 to 1 , and it not blow head gaskets every time you drive it . Also would you have to run a intercooler to keep from overheating the engine . If any one has done this or could enlighten me on this issue please reply.Reason for asking is i found a turbo truck with a bad motor that i can get the turbo and computer out of for cheap or even free .

[kneedownnate]

The stock turbos aren't really worth running.  If you want to be able to pull any real potential out of a turbo setup though, you'd definately wanna have lower compression.

[wadeky [OP]]

thanks but you would think more compression = more power till the head gasket blows.

[BigMike]

It's not always the head gasket that will fail, and if it is sealed properly, it won't be the head gasket that fails.

Your #1 concern will be Detonation and #2 concern will be the physical limitations of the engine itself.

Detonation. Just because you run boost on a high compression engine does not mean certain failure. The trouble though is that when you compress air into an already smaller area (higher compression), now that air is going to be very hot when it is compressed. And since we can only get 91 or 92oct gasoline at the pump, eventually you are going to reach the point where the fuel is not able to exist under those high temperatures without self igniting (reaching its natural flash point). That is when you will get preignition and multiple flame fronts in your cylinders, which will reak havoc on the piston dome, the cylinder dome, and add unequal pressure to the cylinder walls and the piston during expansion.

Physical Limitations. The connecting rods are only able to undergo compressive forces until plastic deformation sets in. Once they plastically deform (break), it's bye-bye engine. You simply can not run 30 PSI on a stock 7.5:1 22R-TE Engine. The rods (amongst other components) are not strong enough to withstand those forces, just like you can not run 20 PSI on a stock 9:1 22R(-E) engine.
I do not know what the actual limitation is for the 22R(-E) engine with boost as I have never tried it. But I wouldn't be surprised if even 13 or 14 PSI would be enough to break a connecting rod.

But lets not forget, in order to get a 9:1 engine up to 13 or 14 PSI without detonation with a stock ECU and such, we will need some gas much slower burning then 92 oct, or we will need to really cool down that intake charge.

Which is what you have mentioned about doing with an Intercooler. So yes, it is possible to have a very efficient intercooling device (even as efficient as a Water/Alcohol Mist System), but you will still for ever be limited by the physical character of the engine itself, which is not even designed for boost.

Now, putting all this tech mumble-jumble aside, in the real world, I have no doubt that you can run a C20 Turbo on a 22R(-E) bottom end at stock boost, which is *just* ~6.5 PSI and be just fine. Just remember that you will need a good intercooler and will absolutely be required to run premium and nothing but premium fuel everywhere you go.

If you were to transfer the whole stock EFI and Turbo over to your engine, then expect to see about a 20-25% increase in power and a much wider and more useable torque band. It would definitely be worth the upgrade, but I would not practically recommend using much more then about 6 PSI.

Keep us updated with this, I would love to see pictures and progress reports!

Cya
BigMike

[wadeky [OP]]

Thanks mike i will let everyone know what i come up with.

[Skinny_Pedal]

just going to add a minoote amount to what mike said. when i was putting my lc engine into my 85, the original plan was to run the stock toyota turbo setup. my engine is at 9.5:1 compression and lc said that as long as i didn't run over 7psi and ran high octane i should not have a problem. granted i never did it, i say give her a try just keep the psi down

[CrazyYota]

do you guys know if you can run a supra turbo c26 on a rebuilt 22RE engine? dont need performance just so my moms  pickup to run 

[BigMike]

Boost is boost. It doesn't matter what you use to develop your boost, but in your case, just keep it limited to around 5-7 psi or so using boost controllers.

The CT26 (Turbo Mk2 MR2, Turbo Celica Altrac, Single Turbo Supra) is an Excellent choice because it can be found in many wrecking yards and Toyota solved the back pressure issue when they developed this slightly-larger turbo.

BigMike

[davidt]

a little more info on ct 26 swaps in this post towards the bottom...
http://board.marlincrawler.com/index.php?topic=21684.msg245001#new

[CrazyYota]

a little more info on ct 26 swaps in this post towards the bottom...
http://board.marlincrawler.com/index.php?topic=21684.msg245001#new

Boost is boost. It doesn't matter what you use to develop your boost, but in your case, just keep it limited to around 5-7 psi or so using boost controllers.

The CT26 (Turbo Mk2 MR2, Turbo Celica Altrac, Single Turbo Supra) is an Excellent choice because it can be found in many wrecking yards and Toyota solved the back pressure issue when they developed this slightly-larger turbo.

BigMike

Thanks for the info guys!! were can i get a boost controller?

[toyo487]

I work with a guy who owns a performance shop and he will do turbos on 22RE's and get about 9 pounds of boost out of them.  Granted he really knows what he is doing.  He just offered to turbo mine with a turbo off of a supra, he would build a custom header, intercooler and intake.   He told me I could probably run about 9 pounds of boost.  He said he would do it for me for 1000 dollars, too bad I have a baby on the way and can't do it, but any one from the Portland Vancouver WA area let me know  and I will hook you up for about the same deal maybe 1200  at most.

[CrazyYota]

I work with a guy who owns a performance shop and he will do turbos on 22RE's and get about 9 pounds of boost out of them.  Granted he really knows what he is doing.  He just offered to turbo mine with a turbo off of a supra, he would build a custom header, intercooler and intake.   He told me I could probably run about 9 pounds of boost.  He said he would do it for me for 1000 dollars, too bad I have a baby on the way and can't do it, but any one from the Portland Vancouver WA area let me know  and I will hook you up for about the same deal maybe 1200  at most.

That would be sweet but dont have that much money to spend on the truck!

[unclejpl4x4]

I have a ?  i know the supra turbos are oil and water cooled  are the 22rets the same set up ?

also if your gona put a turbo on the 22re i would put ARP head bolts in and a nice head gasket  just for piece of mind .

[davidt]

the ct20 and the ct26 are both water and oil cooled