GroundPerformance - SR20 Spec-RS Build

[GroundPerformance]

Just wanted to share this S14 SR+T project put together for a fellow Zilvian and friend "JDM671 (http://zilvia.net/f/members/jdm671.html)". You guys are prolly wondering WTF is "SPEC-RS" it's basicly just a NA SR Turbo conversion build. The NA SR motor is from an S15 Spec-S since we are adding a turbo to it figure the RS would be a good name for it. Anyways this build is close to its completion. This build is currently just aiming for 300whp till its fully broken in.

Some basic info on the setup;
- OE Rebuilt S15 SR20DE Motor
- S14 Chassis
- Engine block tapped for Oil return
- STI 555cc Side feed injectors
- GSP 18G Turbocharger
- Z32 "N62" MAF Sensor
- Stock SR Turbo Manifold
- XTD Stage 3 Clutch
- Walbro 255lph Pump
- 10.x:1 Compression
- E85 Fuel


Engine Management / Tuning;
- Wired to run Tuned S13 KA ECU
- S14 Engine Harness "matched"
- TunerCode firmware


SOME PICs.....

Picture of the Motor before teardown.

https://fbcdn-sphotos-a.akamaihd.net/hphotos-ak-ash4/228841_2305658006941_1413997181_32690298_4957495_n .jpg

Valve Cover Cleanup work..
https://fbcdn-sphotos-a.akamaihd.net/hphotos-ak-ash4/300110_2317959034459_1413997181_32706137_7025099_n .jpg

https://fbcdn-sphotos-a.akamaihd.net/hphotos-ak-ash4/300359_2317961714526_1413997181_32706140_8093721_n .jpg

https://fbcdn-sphotos-a.akamaihd.net/hphotos-ak-ash4/296369_2317965034609_1413997181_32706142_3631064_n .jpg


Some trick for you NA SR guys.. Save your SR20DE wireset as you can later take it apart and re-assembly using the KA wires. G20 wireset which is commonly advised as replaced are typically short in lenght. Ordering OE replacement are more expensive and take longer time. S14 SR20DE distributor also used the same rotor and cap as the S14 KA24DE.

https://fbcdn-sphotos-a.akamaihd.net/hphotos-ak-ash4/293944_2317974954857_1413997181_32706144_1101324_n .jpg

Picked up OE Nissan Full gasket kit for S14/S15 Motor.
https://fbcdn-sphotos-a.akamaihd.net/hphotos-ak-ash4/321030_2343907123145_1413997181_32740242_5501425_n .jpg

Teardown pics...............

https://fbcdn-sphotos-a.akamaihd.net/hphotos-ak-ash4/316050_2519538193812_1413997181_32897013_155087686 5_n.jpg

https://fbcdn-sphotos-a.akamaihd.net/hphotos-ak-ash4/307608_2519546314015_1413997181_32897050_126065205 0_n.jpg

https://fbcdn-sphotos-a.akamaihd.net/hphotos-ak-ash4/304002_2519546874029_1413997181_32897053_192661881 _n.jpg

https://fbcdn-sphotos-a.akamaihd.net/hphotos-ak-snc7/302516_2519548074059_1413997181_32897059_213932353 5_n.jpg

https://fbcdn-sphotos-a.akamaihd.net/hphotos-ak-snc7/293509_2519545593997_1413997181_32897047_141762812 8_n.jpg


Cylinder Head back from the machine shop. CLeaned, Decked and replaced Valve guides and seals.
https://fbcdn-sphotos-a.akamaihd.net/hphotos-ak-ash4/317548_2519542873929_1413997181_32897034_106998232 7_n.jpg

https://fbcdn-sphotos-a.akamaihd.net/hphotos-ak-ash4/303253_2519543433943_1413997181_32897037_870882980 _n.jpg

Pic of the GSP 18g Turbocharger.
https://fbcdn-sphotos-a.akamaihd.net/hphotos-ak-ash4/303815_2519548754076_1413997181_32897062_781202096 _n.jpg

Engine block turn for machine work..
https://fbcdn-sphotos-a.akamaihd.net/hphotos-ak-snc7/320647_2530729553589_1413997181_32908244_805566465 _n.jpg

https://fbcdn-sphotos-a.akamaihd.net/hphotos-ak-snc7/311984_2530729753594_1413997181_32908245_112236506 1_n.jpg

Cleaned up the remaining internal parts while waiting for the block..
https://fbcdn-sphotos-a.akamaihd.net/hphotos-ak-ash4/311894_2530730953624_1413997181_32908252_122010692 0_n.jpg

[GroundPerformance]

Block came back from the machine shop and ready for re-assembly..
https://fbcdn-sphotos-a.akamaihd.net/hphotos-ak-ash4/298993_2539093202675_1413997181_32913300_157075994 2_n.jpg

https://fbcdn-sphotos-a.akamaihd.net/hphotos-ak-ash4/293647_2539092962669_1413997181_32913299_731083010 _n.jpg

[va240dude]

Looking good man!

[matts13vert]

Sweet!! Now for sure this motor will run like a champ with your love! Too bad the poor previous ka-t never had a chance.. :(

[ManoNegra]

any particular reasoning for going this route as opposed to sourcing a turbo S15 SR besides the higher compression?

[GroundPerformance]

Looking good man!

THanks!

Sweet!! Now for sure this motor will run like a champ with your love! Too bad the poor previous ka-t never had a chance.. :(

Should be good... Yup! We should really know the places that you deal with specially engine rebuild work. Also lesson learned ID marked your parts even engine.. Comes in handy in the future! :cops:

any particular reasoning for going this route as opposed to sourcing a turbo S15 SR besides the higher compression?

It's not so much the Hi-Comp as the main reason it was just something that was retained since E85 is much more available now. If not for E85 this pistons would have been swapped in favor of the dished DET pistons. Main reason is simply Cost and Different.

[Imarvin240]

are you doing anything to make the engine stronger while its apart? arp?

[yoni_nismo]

allot of progress since i seen that motor last, Jessie should have a reliable setup once your done its in the proper hands lol

[GroundPerformance]

are you doing anything to make the engine stronger while its apart? arp?

None.. All OE Nissan Spec.

[[email protected]]

you should at least put ARP rod bolts jonathan! stock rods can take an ass kickin'

[tricky_ab]

^^ I agree

That being said, a lot of work as been completed so far, and it's looking good...

[RB Me]

you have it apart build it a little bit.

[GroundPerformance]

Just an update.. This project is practically complete and put about 1k break in miles and now just awaiting dyno tuning to clean up everything else. There has been a few changes made to the motor since initial motor re-assembly showed i need to go oversize pistons. Piston ring gap while still within spec range was a bit to wide for my liking and hate to have ton of blowby. Opted to oversize the cyl to .5 and used oversize pistons from the G20t SR20 pistons. This slighlty lowered the compression but still favorable for turbo.

Re-Assembly..
https://fbcdn-sphotos-a.akamaihd.net/hphotos-ak-ash4/378659_2588245351448_1413997181_32956973_113981860 1_n.jpg

https://fbcdn-sphotos-a.akamaihd.net/hphotos-ak-snc7/376902_2588246791484_1413997181_32956974_138100886 0_n.jpg

https://fbcdn-sphotos-a.akamaihd.net/hphotos-ak-ash4/380045_2658664191875_1413997181_32994704_202937559 7_n.jpg

https://fbcdn-sphotos-a.akamaihd.net/hphotos-ak-ash4/381815_2658666271927_1413997181_32994705_199216379 4_n.jpg


Motorset ready for install..
https://fbcdn-sphotos-a.akamaihd.net/hphotos-ak-ash4/387147_2658673352104_1413997181_32994706_404916376 _n.jpg

[GroundPerformance]

Motor installed... Dyno tuning pics and results next.

https://fbcdn-sphotos-a.akamaihd.net/hphotos-ak-ash4/397084_2935094982472_1413997181_33110256_33526234_ n.jpg

[Ben10]

all that time and money spent and you didnt even clean up the outside of the block, or make the engine look nice in general... thats painful to see.

btw was there a fire in the bay at some point? Why are the fender wells so bubbly?

[UNITEDMASTER]

^^^ Looks like hammer dents on wheel well..

To the OP when you mentioned cost,whats the going rate for the 15 long block.

[GroundPerformance]

all that time and money spent and you didnt even clean up the outside of the block, or make the engine look nice in general... thats painful to see.

btw was there a fire in the bay at some point? Why are the fender wells so bubbly?

Wasn't the priority to put on her make up since she was needed get her ass back to work "daily driven" . We just made sure she didnt have any leaks somewhere to worry about. We were just happy she rides really well and totally clean inside. Besides she likes it painful that way!

As for the the dents.. She is a track whore at times so she's been banged plenty of times already.

^^^ Looks like hammer dents on wheel well..

To the OP when you mentioned cost,whats the going rate for the 15 long block.

I actually find plenty of deals on NA SR motorset. You can pickup RWD NA SR motorset at times for less than 700 complete good condition. I picked up mine for less but it needed worked done to it.