attach turbo onto N/A s15 sr20de

[AdamR]

Not having oil squirters would not make the oil any hotter.

[GroundPerformance]

Originally Posted by Kingtal0n

Everybody around here thats done this has blown their engine. Always a piston failure.
There is not a single one of these S15 NA engines with a turbocharger that has lasted more than 5k miles.

Just a heads up. I am not saying its going to blow up also, just that most of the time, these turbocharger installs are not done right.
And it needs to be done right.

LOL Just Wow.. Please to some that has done this and has piston failure it's mostly not of mechanical reason but simply not having theyre tuning part covered and if staying stock knowing it's limit. S15 NA-T not lasted more than 5K "please". Tell that to the Sentra guys and theyre FWD SR20 NA-T. While your at it dismiss KA-T as well.

It's even simpler to boost this motors considering DET parts will bolt right on. You can even slap a turbo valve cover and just convert to DET ECU and COP. Guys it's simple.. Take care of the tuning regardless which ECU you use and know your limitation stock or built and you will be fine.

Originally Posted by winter

Have been down this road before. This is info off the top of my head from years ago, sorry if I'm wrong but I think I'm mostly spot on.

Oil Problems
Engine does not have oil squirters, might want to get an oil cooler for your oil.

Oil Squirters does help but its not exactly a problem. If running stock stay below 300whp and it will be fine.

Cam Angle Sensor
You want to get the cam angle sensor from a turbo engine. IIRC you can use S14 CAS with the S15 engine.

Again SR CAS is nice being able to detect all cylinders as suppose to just cyl 1 on distributor setup. It's not a problem either plenty of KA-T guys still running distributor on well over 400whp.

Compression
You also might want to try to lower the compression, but I know you can do 8PSI fine, don't go above that you will regret it. Also, might want to look into deeper oil pan + catch can setup for that...get a good tuner too.

9.5:1 is not exactly that high of a compression just an FYI.. I dont think were talking Autech NA S15 here. This is actually a perfect comp IMO for running moderate boost levels so the motor decent bottom end.

Originally Posted by fliprayzin240sx

You're in okinawa...you'd be better off/cheaper in the long run/safer to swap in a turbo engine in it than slap a damn T25 turbo on it. Plus with the shitty base gas (86 octane since AAFES suck balls), slapping a turbo on an NA car is a very very bad idea.

If damn kei cars are knocking on that gas, a ghetto rigged turbo setup on an NA car will blow that engine faster a kukojo jumping a black guys dick.

Definitely stay NA if 86 is the best gas you can get.. How can it be ghetto rig if most DET parts can actually bolt right in.

Originally Posted by AdamR

Not having oil squirters would not make the oil any hotter.

Agreed.. It's to aid on cooling.

[Kingtal0n]

Originally Posted by GroundPerformance

[COLOR=darkred]LOL Just Wow.. Please to some that has done this and has piston failure it's mostly not of mechanical reason but simply not having theyre tuning part covered and if staying stock knowing it's limit.

So, what you are saying is, they have not done it right, so it blew up.

I am not saying its going to blow up also, just that most of the time, these turbocharger installs are not done right.
And it needs to be done right.

Sounds familiar

[GroundPerformance]

Originally Posted by Kingtal0n

So, what you are saying is, they have not done it right, so it blew up.

Sounds familiar

It's simple you can't dismiss any setup just because they're plenty of people who turbo their NA motors and choose to cut corners. Any setup done right can be just as reliable as long as you stay within limits. SR20DE+T or KA24-T doesn't matter. You should find some KA-T threads post the same thing since your basis is the same anyways.

Originally Posted by Kingtal0n

Everybody around here thats done this has blown their engine. Always a piston failure.
There is not a single one of these S15 NA engines with a turbocharger that has lasted more than 5k miles.

Just a heads up. I am not saying its going to blow up also, just that most of the time, these turbocharger installs are not done right.
And it needs to be done right.

You're like saying something and taking it right back in the same line.. This applies to any motor not just S15 NA.

[Kingtal0n]

Originally Posted by GroundPerformance

It's simple you can't dismiss any setup just because they're plenty of people who turbo their NA motors and choose to cut corners. Any setup done right can be just as reliable as long as you stay within limits. SR20DE+T or KA24-T doesn't matter. You should find some KA-T threads post the same thing since your basis is the same anyways.



You're like saying something and taking it right back in the same line.. This applies to any motor not just S15 NA.

This is what you should have posted to begin with, and yes it applies to everybody and every engine, which is why I said it to begin with: it was a true statement, my ass was covered and nobody could disagree, which is what you tried to do, and failed, which means you did not really read it the first time around;

I like to use truthful statements when I type to the internet, dont you? Makes it easier for people to sort through the bullshit.

Simply put, he's in Okinawa Japan. He can pick up a damn DET turbo for less than $500, and get that swapped in. If you have that option, would you really wanna fuck around with going SR20DE-T? He'd probably spend atleast $100 just trying to find a good T25 turbo, manifold, and elbow. Then he'd still have to fuck around with the oil lines. Once he figure out how he's gonna do that, then he still have to fuck around with getting it tuned.


Besides, if this kid is asking this kind of question...I highly doubt he knows anything about tuning. Only thing that I can see that folks in Japan would fuck with for this setup is a SAFC. Would you really trust a SAFC on a DE-T on shitty 86 base gas? He can buy off base gas and spent $120 on a tank of gas.

This is very good advice, and I will say the same exact thing in a different way:

There are many possibilities to make mistakes for the inexperienced when attempting to turbocharge a non-turbo engine, including but not limited to:
oil lines/restriction/return
gaskets/bolt pattern
OEM limitations are not observed
tuning, including fuel system

Many folks are simply do have the patience, and cannot forestall all of the risks of modifying an internal combustion engine. Even engineers are learning from their mistakes; everybody starts somewhere, and ends up somewhere, but very few people graduate to rocket science physics from hands on mechanic work experience errors- which means comparing the organic structure of the desired fuel being used with the inlet constituents and properties for the combustion process is not thoroughly being sorted. Many of these jobs are plug and pray.

If the op wants a turbocharger on his SR20 engine, I would strongly advise he acquire an engine that comes equipped with a turbocharger from the factory. The cost is not so much greater than what he is faced with now, and the effort will be rewarded with elimination of guess work, except where concerning the quality of the fuel and such variables that cannot directly be accounted for regularly (there is always a risk of bad gas).