“Flex Your Bottom Mount Setup” Thread

[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).

https://uploads.tapatalk-cdn.com/20180821/dc3d23cf50b75f980b03a065d11b7907.jpg
https://uploads.tapatalk-cdn.com/20180821/3ae1a8a2a739df02aacf60dc4c008d78.jpg
https://uploads.tapatalk-cdn.com/20180821/d0389bd4bfcc9af2865c8ec83b4b5008.jpg
https://uploads.tapatalk-cdn.com/20180821/3c7e3e2fcb8d7171a4f8bb93b327f1bf.jpg
https://uploads.tapatalk-cdn.com/20180821/38ac25be809b72d7e7a522ec258287a5.png
https://uploads.tapatalk-cdn.com/20180821/8da10a2f2dc475f9b81d4a4a4ab9ad16.jpg


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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.

http://i28.photobucket.com/albums/c242/gaert/PICT0063-1.jpg

[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

https://i.imgur.com/XpbiBTD.jpg

[RalliartRsX]

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.



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 (http://zilvia.net/f/showthread.php?t=627928)

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.
http://i15.photobucket.com/albums/a354/RalliartRsX/IMG_2221_zpsbe603aec.jpg

[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]

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 (http://zilvia.net/f/showthread.php?t=627928)

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.
http://i15.photobucket.com/albums/a354/RalliartRsX/IMG_2221_zpsbe603aec.jpg

http://memecrunch.com/image/52ab85ae1605fb1182000021.jpg?w=400


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.

[slider2828]

Wait all you guys live in the same area?

[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

https://imgur.com/p2wLnqr.jpg

https://imgur.com/lax91dj.jpg

[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]

Does a stock SR20 run a scavenge pump? Why would anyone need to run one jumpman?
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:
https://i.imgur.com/npzq1BC.png

Top mount:
https://www.mckinneymotorsports.com/images/products/179a.jpg

[feito]

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

https://i.imgur.com/HoCy5xpl.jpg

[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.

When I was 2.2L SR
What do you have now? I was under the impression that you've had the same motor since forever haha.

So YOU'RE the one who grenade 3rd gear on first drive!!
I am! Haha, I actually stole a bunch of ideas from your thread.

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.
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.

Wait all you guys live in the same area?
SoCal-ish.. I'm actually moving up to the bay area in January

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

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

[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

[FaLKoN240]

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

He lives in Socal

[pacotaco345]

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

He lives in Socal


I got an assignment at Travis AFB, so I’m trying to find a place in Concord [emoji846]



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[slider2828]

I got an assignment at Travis AFB, so I’m trying to find a place in Concord [emoji846]



Sent from my iPhone using Tapatalk

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.

[bardabe]

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.

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

[RalliartRsX]

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

[FaLKoN240]

I got an assignment at Travis AFB, so I’m trying to find a place in Concord [emoji846]



Sent from my iPhone using Tapatalk

You bouta be a local.

[KiDyNomiTe]

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


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

[zach3904]

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.

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]

https://www.facebook.com/photo.php?fbid=2135297739815001&set=p.2135297739815001&type=3&theater&ifg=1is a stock manifold considered bottom mount?

[dev893]

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.

http://i28.photobucket.com/albums/c242/gaert/PICT0063-1.jpg
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.

[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.

[Dboyizmlg]

Was that Juan tuning your car?

[RalliartRsX]

^^^^^^^ Yep

[pacotaco345]

@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.

To be honest I have no idea what kind of difference it makes, I was already balls deep in the motor so I figured I'd throw another couple hundred bucks at it to get rid of the crusty old one..

[p3s7]

To be honest I have no idea what kind of difference it makes, I was already balls deep in the motor so I figured I'd throw another couple hundred bucks at it to get rid of the crusty old one..

I sent you a PM regarding your setup. I'm looking to do something similar with a 7163 though and an OEM manifold.

[RalliartRsX]

Fitting a 7163 on a stock manifold will prove a little more difficult. The compressor housing is a little bigger than the 6758.

[p3s7]

Fitting a 7163 on a stock manifold will prove a little more difficult. The compressor housing is a little bigger than the 6758.

I just sent you a PM as well, lol. I thought all the "B" housings were the same?

[spooled240]

Fitting a 7163 on a stock manifold will prove a little more difficult. The compressor housing is a little bigger than the 6758.I thought they were all the same size externally? Is the 6258's comp housing smaller than the 6758's? Im wondering if tge 6258 will have a better chance clearing the block on a KA than tge 6758, which is apparently too large. Couldnt find any info on borg warners site..

[p3s7]

https://i.imgur.com/Th34iSu.jpg

I made this comparison from BW's web-site of the 7163 vs. 6758.

The dimensions not listed are the actual widths of the compressor/turbine housings. I know RalliartRsX has actually owned both of these so I've asked him to share what the differences are?

I also e-mailed BW/a few other companies about this as all of their posted dimensions are exactly the same for the T-25 housing models. The only difference being the .64 AR (6758) v.s. .85 AR (7163).

Not trying to stray off topic here too much but if anyone could chime in or PM me that would be appreciated.

[derass]

One big difference between those two, is that the 7163 is only(?) turbo in BW's lineup that uses a mixed flow turbine. That's what gives it such a great balance of power and response.

[RalliartRsX]

Sorry folks. I may have misspoken due to not paying enough attention

The 6258 is dimensionally smaller than the 6758/7163. The 7163 shares the same backing plate as the 6758. The only real difference is the MFT wheel and it protruding a few mm more into the compressor housing.

The 6758 and 7163 should be the same in terms of external dimensions.

In my case, the fitment issues associated with using a stock manifold were a bit less than using a modified Tomei or similar. In addition, ease of removal was paramount, and on a S14 chassis with Z32 BMC and associated metal brake lines, using a modified Tomei as I initially had meant it proved difficult to remove the entire assembly without bending, contorting, or potentially damaging an engine bay component. As it stood, with the stock manifold, the assembly was removed in an hour and five minutes start to finish.

Either way, the 6758 will make a ton of power with T28 response on a stock S13 SR20DET.

[p3s7]

I ended up getting a 6758 for a good price and it's going in a RHD s14 so should have a bit more clearance with no brake booster/etc. To worry about. Thanks for the help looking to make 450+ with water/meth injection and a ported/honed OEM manifold/poncams