did a turbo engine can start and run without the turbo???

[jf240sx]

hello ,

i'm looking to buy a s14 sr20det to put in my s13 ,but the engine is out of the car ,the engine is in the garage and the guys already sell the turbo...so before to buy it i want to know if the run good..

so did a sr20det can start and running without the turbo ??? and meaby can you give me something to chek on the sr20det ton know if the engine are in good condition thanks alot sorry for the bad english!

[johnny5]

im gunna say yea the engine will run, but itll be horrible since its meant to be run with f/i so to get it to run good with out f/i youll need a retune and different internals so your best bet is to buy a turbo for it if you buy the motor

[jf240sx]

yes yes i know that i'm tlaking about start teh engine in the garage to listen it if the run good!!

im gunna say yea the engine will run, but itll be horrible since its meant to be run with f/i so to get it to run good with out f/i youll need a retune and different internals so your best bet is to buy a turbo for it if you buy the motor

[IrenicShogun]

I agree with Johnny5, I mean unless you know someone that will do an ECU job for you on the LOW possibly free, then it'd be really bad, you also risk damage to the engine itself, don't try to run anyone. Changing your compression ratio would work, but that's all ECU again.

[airman86]

Changing your compression ratio would work, but that's all ECU again.

you can change compression ratio with the ECU?

[jmac636]

I agree that you shouldn't run the motor out of the car. If you really won't the engine get the guy to do compression test and a leak down test. Also ask him to guarantee the motor will run without a knock when installed correctly. Other than that maybe remove the valve cover and oil pan to verify the motor is good. Also look inside exhaust ports for carbon build up and oil residue and this will give even more pease when handing over your hard earned cash.

[SullivanRacing06]

thats the problem of buying a used "jdm beat to hell" motor, its always a RISK, the turbo motor has allot lower compression then the normal n/a sr20de, good luck with the swap

[IrenicShogun]

you can change compression ratio with the ECU?

Yes, the pistons and ECU contribute to compression ratio.

[terrible01]

Yes, the pistons and ECU contribute to compression ratio.

your going to have to explain this one to me... roflmao

[carkook]

I agree that you shouldn't run the motor out of the car. If you really won't the engine get the guy to do compression test and a leak down test. Also ask him to guarantee the motor will run without a knock when installed correctly. Other than that maybe remove the valve cover and oil pan to verify the motor is good. Also look inside exhaust ports for carbon build up and oil residue and this will give even more pease when handing over your hard earned cash.

Yes, the pistons and ECU contribute to compression ratio.

Yeah sorry man but there is no ecu tune that is going to change the compression raito.

[IrenicShogun]

Yeah sorry man but there is no ecu tune that is going to change the compression raito.

He's not putting the same turbo back in there, what do you mean? Of course it matters

[carkook]

This is off topic, but the compression raito is how much volume is in the cylinder with the piston at the bottom of its stroke compared to how much volume with the piston at the top of its stroke. Explain how an ecu tune is going to change that.

[the converted]

YES you can start the car up and get it to run without the turbo and it will run just fine. Just make sure that you have the oil and coolant lines plugged up when you go to start it. Also put the MAF on somewhere so it gets a good reading from it.

[IrenicShogun]

This is off topic, but the compression raito is how much volume is in the cylinder with the piston at the bottom of its stroke compared to how much volume with the piston at the top of its stroke. Explain how an ecu tune is going to change that.

What are you talking about? ECU is to piston as piston is to compression ratio, like you said. I know what a CR is.

[ZAKU]

It won't tell you if the sensors are working properly, but something like this http://www.motorcycleproject.c....html would give you an excellent idea of how healthy the rings and valve seals are.

[ZAKU]

What are you talking about? ECU is to piston as piston is to compression ratio, like you said. I know what a CR is.

You're making it sound like you can change the CR by tuning the ECU, which is impossible.

Yes, the ECU is set to run an engine with a set CR and has fuel maps intended for more air from the turbo. But running the engine without the turbo just as a test shouldn't harm it. If anything, I think it may run a little rich.

[carkook]

[QUOTE=ZAKU]

You're making it sound like you can change the CR by tuning the ECU, which is impossible.

QUOTE]

What I was trying to say

[IrenicShogun]

You're making it sound like you can change the CR by tuning the ECU, which is impossible.

QUOTE]

What I was trying to say

I went back and read my post I see what you mean.

[tercel drifter]

alright this is what ur going to have to do, since sr came in n/a and turbo you're going to have to find a n/a ecu, get higher compression pistons and hg, exaust manifold and tada u've got a sr20de

[tercel drifter]

People are getting confused here, YOU CANNOT CHANGE COMPRESSION RATIO WITH UR DAMM ECU. Since my memory is still fresh here is how to find the CR

CR=(.7854*bore^2*stroke)/(chamber volume+hg volume+ piston deck volume)

.7854*diameter^2 is how to calculate area

you can change the a/f with ecu by widening pulses but that's completely different story.

Quick inspection tips, check spark plugs, do a leak down or compression test(personally if your only going to do one i'd do the leakdown because it's a lot more precise) and if it all check's out good ur probably going to get a good motor