Can u build a turbo for SR20De? (non-turbo engine)

[jonathans15]

i currently drive a s13 with sr20de non-turbo engin. which is the infinite G20's engine. i am just wondering can u add a turbo on to the engin? wat's the cost? will it be faster than the sr20det? Thanks :confused:

[NemeGuero]

No. the DE isn't built for turbo. Takes more money than just buying a DET.

will not be faster.

try searching next time

[MadScientist]

Put your flame suit on now!!

First off the SR20DE has a different block that is not drilled for oil supply to the turbo or squirters to the pistons. $$ Machine shop.
The only thing good on the SR20DE is it has a larger Throtle body than the Turbo model.

Get SR20DET unless you want to run N/A!!
That doesn't mean go find a G20-T engine eather... it doesn't work.

Peace
Drew

[Wei240]

many places that sells sr20det rwd also sells fwd versions,
ante up

[jonathans15]

thanks guys, so u cant add a turbo no matter what?? even u custom make one it wont fit??
maybe i should get a sr20det than.....=.=

[cdlong]

you can add a turbo to an SR20DE just like you can with a KA. you could even use stock take off parts like manifolds and turbos, which you could get for pretty cheap.

given the same mods, a DE-(T) will be faster/more powerful than a DET, that is, up to the point where the DE explodes because it can't handle the extra power.

if your power goals are low (sub 300hp) you should be able to use a DE. and if you do it right, you could get some pretty good results. the major difference between the two is the compression ratio. if you keep the boost low enough to avoid detonation, you will have better off boost response and more power than the same mods on a DET.

[steve shadows]

There is so much misinformation in this thread form ka-t people all be it lol.

Your motor is probably an s14 silvia Q motor (ie sr20de). not a g20 motor although the internals are
similar to a sentra sr20de motor.

the DE Block is missing a couple things that make it suitable for this.

SEARCH I wrote like 7 things that make it different in a nother thread about this exact topic.

With a little more money invested (still probably less than the going rate of a front clip for SR or good ka-t setup) you can make this happen. You will just be missing out on the oil squirters for the pistons.

if you planning on 24 hr le mans i say go det, if not this is a decent option, stop shooting him down, but original poster needs to search. i need to leave gtg.

search for it ill be back later.

[Rittmeister]

Folks have been turboing the FWD USDM DE engines for years, with excellent results.

If you have an S13, you don't have a G20 engine. They're functionally identical but you can't swap them between FWD and RWD cars.

-you can use take-off OEM Nissan parts (for FWD, Bluebird and GTI-R stuff). In the case of the RWD engine you'd need the manifold, turbo, O2 housing/downpipe, and you'd need to make custom lines for the turbo but that's not too hard. Injectors and ECU and you're good to go.
-Drilling the block is easy. FWD guys do it all the time. You pull both oil pans, drill the hole, tap it, and you're done. Stick everything back together and drive off.
-Yes, the compression on the DE is a little higher than the DET - 9.5:1 vs. 8.5:1. This doesn't limit your boost much and in fact spools a given turbo a bit quicker. There are guys making in excess of 400 horsepower on stock bottom end USDM DE engines. The block is the same, and in many cases the crank/rods/pistons are too.
-The only thing you're truly missing is the oil squirters.

Despite what a lot of people here are saying, yes, you can turbo your engine, and it'll cost less than buying a DET if you want a mild build (T25 or T28, horsepower equivalent to a stock DET). If you want big turbo etc all bets are off.

[delphis]

I have the same engine in my car and had the same idea about bolting up just your standar det parts but then realized that if I wanted the car for Daily driving that it wouldn't be nearly as reliable and probably lead to a lot more problems down the road.

The sr20de does have the spots you have to drill to add in the oil lines but once again if you do not have the know how it will cost you a lot to have a machine shop do it for you. Other variences are the fact that the det has coil packs as to out single with with distributor.

the other thing mentioned previously is the comp ratio I beleive ours is 9.5:1 as the det has a lower comp, which in turn will give you better boost and faster response than a stock det running the same psi but definately increases the chance for detonation and also with out the oil squiters I would think your block wouldn't last all that long. hope this helps I have had these guys answer these same questions about 2 weeks ago. I have decided to piece together a det and build it from the ground up with better pistons conrods and improve everything from the block up so when the motor is done it will be a champ and I will be able to push a large amount of boost with a clear mind and not have to worry about the reliability of the motor.

[jonathans15]

THANKS GUYS these informations r very helpful!!:kiss: :keke:
i will do it one daY!! and show u guys it works! i trust my car and i believe if u manage the turbo right, it will less longer~

[gonzoes14k]

woow. I will answer this thread because i have done it. Yes you can turbo a de,no problems at all by doing so although the compression on a de is 9.5.1 which really makes no difference i had no issues at 12lbs in my b14 what so ever ,as stated some things are different

-block need to be drilled
-oil line needs to be attatched (jgs kit)
-waterlines ran. (optional)

thanks pretty much the hard part.

To give you an idea of the parts you will need i used

gti-r man and j-pipe (fwd stuff) but a stock de-t manis what you ll want
gti-r t28 turbo

other than what was mentioned its a pretty basic setup, sr injectors(370cc)
and maf. IC and 240 downpipe and youll be boosted. I didnt list smaller things but I would suggest goin to the sr20forum.com for a more detailed list of turboing the de. i am a member there and reality sucks is the name, pm if your interested in this. I can be of assistance.

[jonathans15]

Cool! I will check it out shortly,
when i do it, u better answer alll my questions! :bowrofl:

j/k

[gonzoes14k]

The sr20de does have the spots you have to drill to add in the oil lines but once again if you do not have the know how it will cost you a lot to have a machine shop do it for you.





Sorry to say, but your wrong, oil supply from the de can be taken from the oil pressure switch on the other side of the block by way of a T fitting and restricted with a oil restrictor. Only hole that is drilled and tapped is the one for the return, about a 10 minute job, Ive also seen people drill and bung the oil pan aswell. jgs sells this kit for around 70.00.

[Taniguchi_Is_#1]

i will do it one daY!! and show u guys it works! ~


it DOES work. i know of a guy that has one. just put in the work, any engine is turbo-able.

[delphis]

Sorry to say, but your wrong, oil supply from the de can be taken from the oil pressure switch on the other side of the block by way of a T fitting and restricted with a oil restrictor. Only hole that is drilled and tapped is the one for the return, about a 10 minute job, Ive also seen people drill and bung the oil pan aswell. jgs sells this kit for around 70.00.

I don't know which de you have worked with but the rwd one that I have has to spots for it there are to circles at the rear of the block (I think) and I am assuming those are for the turbo oil lines because they are just not punched out for the NA setup. I could be wrong though but I know the de from the sentra and de from the rwd de from the jdm version of the engine are not identical.

[gonzoes14k]

I don't know which de you have worked with but the rwd one that I have has to spots for it there are to circles at the rear of the block (I think) and I am assuming those are for the turbo oil lines because they are just not punched out for the NA setup. I could be wrong though but I know the de from the sentra and de from the rwd de from the jdm version of the engine are not identical.


correct they are different, just not in that way, i can name a few things, dizzy location, manifold placement, oilpan differences fuel rail differences. a whole lot of things are different. But yes those are for factory oil lines, so instead of going through the hassel of taking your block apart to get the shavings out after you drill those oil lines its just a pain in the ass, thats why oil supply is taken from the oil pressure sending unit. If im not mistaken its under the intake mani on the rwd de.

[s13gold]

ur gonna get burned.....

[Wei240]

all this time i thought he had a g20, hence g20 sr20de engine,...

why the hell did you put in a sr20de into a s13 and then wanting to boost it... did you get free parts and free labor? even still, ka>sr, lol

[delphis]

correct they are different, just not in that way, i can name a few things, dizzy location, manifold placement, oilpan differences fuel rail differences. a whole lot of things are different. But yes those are for factory oil lines, so instead of going through the hassel of taking your block apart to get the shavings out after you drill those oil lines its just a pain in the ass, thats why oil supply is taken from the oil pressure sending unit. If im not mistaken its under the intake mani on the rwd de.

ya I mean that would be to factory spec and personally that is the only way I would go. A lot of kids do it wrong the first time then have to go back and do it again. also if he were to drill out the factory oil spots on the block upgrade the pistons while he is in there and not have to worry about detonation at higher psi levels. but you know that is just my over worried ass thinking things through.

[gonzoes14k]

ya I mean that would be to factory spec and personally that is the only way I would go. A lot of kids do it wrong the first time then have to go back and do it again. also if he were to drill out the factory oil spots on the block upgrade the pistons while he is in there and not have to worry about detonation at higher psi levels. but you know that is just my over worried ass thinking things through.


im not goin to tell you how to do your build, but i can see that your over worried about this, but if these are your concerns than i would suggest doin your homework on this before mis-informing others or doing this setup. im not trying to be a dick i just want people to know what and how this is done without the hassel of worrying over things that dont matter. and if your worried about high boost detonation, or what not, it has been done 22lbs daily on the de with no problems at all with the correct tune. keep it safe and keep thos afr's at a acceptable level and youll be fine. to each his own, check out the site i mentioned through for more info on this .

[NemeGuero]

There is so much misinformation in this thread form ka-t people all be it lol.

Your motor is probably an s14 silvia Q motor (ie sr20de). not a g20 motor although the internals are
similar to a sentra sr20de motor.

the DE Block is missing a couple things that make it suitable for this.

SEARCH I wrote like 7 things that make it different in a nother thread about this exact topic.

With a little more money invested (still probably less than the going rate of a front clip for SR or good ka-t setup) you can make this happen. You will just be missing out on the oil squirters for the pistons.

if you planning on 24 hr le mans i say go det, if not this is a decent option, stop shooting him down, but original poster needs to search. i need to leave gtg.

search for it ill be back later.

jesus christ you're dense.

get over yourself dude.. haha


Point is, original poster CAN'T do it for cheaper if he's asking this question. I spread no mis-information.

and if he can't handle being shot down, he shouldn't have posted.

You're just trying to spoon feed him 'cuz it boosts your ego. ;)

Can you say.. "Called out"? and up front too, no discretion.

[delphis]

so what if I took a det block and bolted it up to my non turbo head? also where are the oil squiters located in the head or the block?

[steve shadows]

jesus christ you're dense.

get over yourself dude.. haha


Point is, original poster CAN'T do it for cheaper if he's asking this question. I spread no mis-information.

and if he can't handle being shot down, he shouldn't have posted.

You're just trying to spoon feed him 'cuz it boosts your ego. ;)

Can you say.. "Called out"? and up front too, no discretion.


Right, well your supposed to be the mechanical engineering student :ughd:

Um...

You can do it for cheaper, its dead true...and if your questioning his competancy in personally doing it for cheaper

well thats not the point of the thread for the community although it might be for him ;)

I found motorsets for DE's in the 850 dollar range around here...

Bolt on turbo, tap for oil lines and go ( + a couple other minor safe guards all typical for det as well).

If I was tyring to spoon feed him I would have listed every little thing but I told him to search...Evan

Just be nice to it and take care of it. 400 hp no problem.

If he needs more detail on tuning it properly Ill be happy to answer that.

thanks for taking a chance to be civil and tuning it into a way to try to scapegoat me for "______" I don't know.

ha ha ha...

[Dr.Baby]

we've done this before. with a 3071r. made over 400hp with a good tune the motor has lasted for OVER a full year of drift demo's and serious abuse.

1. oil return - pull off the upper and lower oil pan. drill and tap into it just where the DET is drilled and tapped. its super thick there and the upper pan is the same execpt that one spot.

2. oil feed - honda turbo style, using a line off a sandwhich plate on the oil filter.

3. coolant feed - S14SR turbo neck. make a custom AN line. easy.

4. coolant return - i think theres a plug in the block thats stock. take it out.



GET A GOOD TUNE THE MOTOR WILL NOT LAST WITHOUT A GOOD TUNE.

[yayo_blanco_chuki]

Like others have said above, this gets done all the time by FWD SR20 owners. Before I got my S13 I was one. Was and still am an SR20forum.com member, which is where you need to go to learn the ins and outs of turbo'ing the DE motor. It gets done with much success, and since the DE and DET are so similar, it can be done with ease as well. With the 9.5:1 c/r, I would go with at least a T28 if you are wanting to stay with an OEM manifold. But, I would reccomend going with a bigger sized turbo. I say bigger turbo in order to compensate for the extra heat that is going to be generated with the 9.5:1 c/r. I noticed with my SE-R that had a JDM DE and T25 Bluebird setup that the power died off at around 5K RPMS. The difference in the c/r of the DET and DE motors is not made by a change of the pistons, the pistons are the same in both variations. The compression change is made by the shape of the combustion chambers of the two different heads. The DE is more square shaped, to raise the c/r for NA duty, while the DET motors have a rounded combustion chamber shape, to lower the c/r. Having a good ECU tune is what is going to hold it all together more than anything else.