pacotaco345

Shoot me if something like this already exists, but I’ve seen a GTX thread, a 2871r thread, I think an EFR thread somewhere, but this is for all that bottom mount, t25, “stock looking” 4 cyl goodness.

Really I just want to brag. Last Sunday My SR made 492 whp on a dynapack at 19 psi with the following mods:

CP 9.5:1 comp
Eagle rods
Tomei 256 poncams
Tomei expreme manifold
Custom 3” exhaust
CX fmic
EFR 6758
ID1050x
Walbro 485 @ 55 psi base fuel pressure
PowerFC D jetro
Oh, and e85

I had to do a handfull of stuff to get the efr to fit bottom-mount, like clearance a part of the block with a die grinder, but aside from that it wasn’t anything too groundbreaking. Also it will easily break 500 if I had a better fuel setup. Onto some pictures! The dyno graph shows wastegate (12 psi), low boost (14 psi), medium boost (17 psi), and high boost (19 psi).









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slider2828

When I dynoed mine on Dynodynamics (similar to mustang)

CP 8.5:1 comp
Eagle rods
HKS 264 Step 1
Stock Intake and Exhaust
Blitz Nurspec
Blitz FMIC
GT2871R .86
Nismo 740cc
Walbro 255 @ 43 psi base fuel pressure
PowerFC D jetro
Cali Piss 91

360 WHP @ 5500..... Nothing spectacular.

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KiDyNomiTe

When I was 2.2L SR
GTX2863
Poncams
ebay manifold modded for EWG, hopefully going to get a better manifold, finding good options is terribly difficult
Tial MVS
19 psi

398/390

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RalliartRsX

So YOU'RE the one who grenade 3rd gear on first drive!! Juan says hi

P.S
I did this install a few years ago. Have since moved on to bigger and better things

How-to/tutorial: Installation of EFR 6258, 6758 and 7163 on SR20DET

Made 300WHP on 12 psi with zero timing added. Essentially a cleaned up base map. Thing was a riot!
6758
Stock manifold
3"
Nismotronic
Decapped 850 side feed
Basic setup.

derass

damn. impressive. 492 whp is probably the highest I've ever seen from 2.0 L bottom mount SR.

425 whp was about the highest I'd seen before. I think your extra 70 whp came from the E85. And maybe some EFR efficiency.

bardabe

haha I seriously thought he missed a gear until he rolled past me and I heard all the crunchy not healthy noises. I'll have some video footage shortly.

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slider2828

Wait all you guys live in the same area?

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zach3904

Textbook low power KA-T setup. Kinda ghetto in spots, but it's been good to me.

T25 (bump to T28 soon)
SR injectors
Z32 MAF
Stock internals
RS Enthalpy OTS tune
CodyAce manifold
PBM mid mount intercooler
PBM cobra DP

jumpman2334

do you guys not have to run scavenge pumps for the oil return on these setups?

RalliartRsX

Does a stock SR20 run a scavenge pump? Why would anyone need to run one jumpman?

xpinoyxmk

Awesome numbers paco!

Aiming for a similar setup but with a ve head. I know its not needed but i got it for cheap and it should be more reliable.

jumpman2334

i have no idea, I don't own a 240 or a SR; that is why I am asking. Ive always figured that you would be fine due to the oil constantly pushing it out of the CHRA and as long as its not below the pan, gravity should take over.

HOWEVER, I have seen plenty of guys run scavenge pumps on bottom mount setups that were still above the pan; some even going as far to say it was an 'absolute must'. I think they were playing it safe. just curious.

derass

A Nissan bottom mount turbo setup doesn't put the turbo under the engine or anything.

The turbo is still half-way up the engine, and the oil drains into the block above the oil pan. So gravity just does it's thing.

Bottom mount:


Top mount:

feito

fwiw, I ran this setup on one of my mr2's for a few months without any smoking or oil issues. As you can see, that was really low. The drain fitting on the turbo was just above the oil pan.
Tried looking for a better picture but it seems photobucket has stoled all of our pictures for ransom...

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pacotaco345

Wow haha this thread actually got some traffic.. I think it's awesome to see everybody's setups floating around here, and I think its exciting that just 5-10 years ago you had to go top mount to make big power with a relatively small displacement 4 cyl. Injectors, engine management, turbos, coatings, fuels, tuning, etc have all leapfrogged so quickly recently I wanted to see what kind of power a motor would make using an old recipe with modern components.

What do you have now? I was under the impression that you've had the same motor since forever haha.

I am! Haha, I actually stole a bunch of ideas from your thread.

Thanks! Yeah I'm sure a huge amount came from the E85. My last setup was an s15 turbo on 18 psi tuned on 91, and while it (320 wheel) was quick, its a night and day difference between that setup and my current one.

SoCal-ish.. I'm actually moving up to the bay area in January

If it works! I've always loved well set-up KA-Ts, but ever since going SR I haven't been able to convince myself to go back.

No scavenge pump here, I'm sure on a massive turbo that requires an insane amount of oil feed it might be needed, but with only a -3 or -4 feed there's not too much volume to get backed up. My oil drain is weeping a little bit though.

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slider2828

cool pacotaco! do you know if you east bay or peninsula? Its expensive AF up here... Come by for a beer and check out my build... when you got time

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FaLKoN240

He lives in Socal

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pacotaco345

I got an assignment at Travis AFB, so I’m trying to find a place in Concord



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slider2828

Oh you in the AF.... I had a few friends out there at the base.... Vacaville isn't bad its pretty nice actually.... Dude you are like 40 minutes from Thunderhill. Its one of the premier tracks for drift and time attack.

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bardabe

He's currently 5 minutes from willow springs if he stops at all the lights and stop signs.

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RalliartRsX

^^ Yeah, that's too far......

FaLKoN240

You bouta be a local.

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KiDyNomiTe

Just a regular 2.0 S14 motor for the time being. It makes 380/370 (I think).

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zach3904

4 years strong! If/when this motor lets go, an SR will definitely be on the list. Grats on those numbers. That's insane for a bottom mount haha.

dev893

is a stock manifold considered bottom mount?

dev893

sounds like a decen set up, may of overlooked it how much boost?

slider2828

Was running 17PSI.... needed it for more track duty so didn't want to run it 21 PSI which is closer to its sweet spot....

Then blew the motor cause of a coolant leak under the intake manifold..... Now went freddy to clean that up.

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slider2828

@paco, do the ATI dampers make that big of a difference? When should you add it?

Been debating for a long time.

Thanks for your insight.

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Dboyizmlg

Was that Juan tuning your car?

RalliartRsX

^^^^^^^ Yep