Explicit Speed Perf. (ESP) H23A Vtec Crx Turbo Winter Build (Take 2) (Ebay turbo)
This will be my 2nd attempt on toying with Turbo and going to the Darkside. The Goal is to make a kit to please me and my customers looking for a lil extra hp. 6-8 psi and around 300 whp and same crazy torque is the Goal. Skippin 12s and possibly 11s in the 1/4. -John
This will be a slow progression. Goal is to be finished and tuned by the end of winter.
Current NA status:
- JDM H23A Vtec Blue Top Stock Internals!
- JDM H22A M2B4 LSD trans
- 9lb chromoly 1 piece flywheel
- ACT HD clutch kit 6 pad sprung race disc
- Converted OBD1 http://www.Rywire.com p28 crome tuned
- Euro R intake manifold http://www.RoskoRacing.com
- 68mm Performance Products TB
- ESP EF H22A Motor Mount Kit
- ESP EF H22A Traction Bar System
- ESP 4-2-1 H22A Header 2.5" collector
- 3" Cold Air Intake, BPI stack, K&N filter
- 3" Quick Dump Magnaflow Exhaust
- 212 whp 174 trq trap speed is 106 mph 22" MT's


Precsion T3/To4e 50 trim custom internals, large wheel.
Tial WG and Bov
Recent picture with the H23A Vtec Blue Top in...

NA tune:
This will be a slow progression. Goal is to be finished and tuned by the end of winter.
Current NA status:
- JDM H23A Vtec Blue Top Stock Internals!
- JDM H22A M2B4 LSD trans
- 9lb chromoly 1 piece flywheel
- ACT HD clutch kit 6 pad sprung race disc
- Converted OBD1 http://www.Rywire.com p28 crome tuned
- Euro R intake manifold http://www.RoskoRacing.com
- 68mm Performance Products TB
- ESP EF H22A Motor Mount Kit
- ESP EF H22A Traction Bar System
- ESP 4-2-1 H22A Header 2.5" collector
- 3" Cold Air Intake, BPI stack, K&N filter
- 3" Quick Dump Magnaflow Exhaust
- 212 whp 174 trq trap speed is 106 mph 22" MT's
Precsion T3/To4e 50 trim custom internals, large wheel.
Tial WG and Bov
Recent picture with the H23A Vtec Blue Top in...
NA tune:
Last edited by ESP.net; Feb 16, 2009 at 09:19 AM.
Trending Topics
Quick update: All parts are starting to trickle in...
38mm Tial MVS v band 7.2 psi spring
New T3/T04e Precision unit with some secret internals haha big wheel to carry top end even tho still a 50 trim, it's more like a 57-60 with larger wheel. A buddy who rebuilds turbos gave me a custom one.
All manifold parts to make a mini ram (going to sale the log)
Downpipe and Dumptube material,
Intercooler 28x6.5x2.75" overall
Intercooler couplers n T bolt clamps
I will throw up some pictures as I go, next 2-3 weeks should be done making everything.
Fire her up next day or so for last time NA, do compression check and take her apart.

Yes internal WG is going bye bye
38mm Tial MVS v band 7.2 psi spring
New T3/T04e Precision unit with some secret internals haha big wheel to carry top end even tho still a 50 trim, it's more like a 57-60 with larger wheel. A buddy who rebuilds turbos gave me a custom one.

All manifold parts to make a mini ram (going to sale the log)
Downpipe and Dumptube material,
Intercooler 28x6.5x2.75" overall
Intercooler couplers n T bolt clamps
I will throw up some pictures as I go, next 2-3 weeks should be done making everything.
Fire her up next day or so for last time NA, do compression check and take her apart.
Yes internal WG is going bye bye
Last edited by ESP.net; Feb 16, 2009 at 09:31 AM.
Change of plans, did the comrpession test and leak down last week, came out lil low, sore rings. Took it apart. Everything else checked out.
Took a deep breath and bit the big one and decided to rebuild for big boost.
Took a deep breath and bit the big one and decided to rebuild for big boost.
Last edited by ESP.net; Jun 21, 2009 at 01:42 PM.
Update! 6/21
Since my last post... I bit the big one and the car is just about done... just need to make my alternator kit and fire her up for the first time. Will post more detailed pictures and dyno results.
I am shooting for 400+ whp 14-16 psi pump gas... Want something pretty killer for street but not quite over the edge...
2.3L + Turbo =
Build Details:
- JDM H23A Vtec Blue Top
- JDM H22A M2B4 LSD trans
- 9lb chromoly 1 piece flywheel
- ACT HD clutch kit 6 pad sprung race disc
- Converted OBD1 http://www.Rywire.com
- Euro R intake manifold http://www.RoskoRacing.com
- 68mm Performance Products TB
Head:
- PDE Head
- SuperTech Valve Springs and Retainers
- Ferrea 6k Series SS Valves, Ferrea Valve Guides, Ferrea Seals
- Port and Polish Exhaust side
- Type S cams
- MLS 60k Cometic gasket
- ARP Head Studs
Bottom:
- Darton MID sleeves
- JE 9-1 Pistons/Rings STD Size 87mm
Which final compression is about 9.6-1 bein 95mm stroke and H23
- Crower H23 Rods
- H23 Crank
- ACL Bearings
- Honda Water/Oil pump
- Kaizen Speed Balance Shaft Eliminator Kit
- Balanced Assembly
- B20Luda Built
Turbo Kit:
- T3/To4e "Big Wheel" Custom 50 trim .63ar Stage 3 wheel
- Synapse H22 Turbo Manifold
- Custom 2.5" Hot/Cold Aluminum IC piping
- Tial Q Bov
- Tial 38mm MVS Vband WG
- 3" V band downpipe and exhaust
- 880cc Precision injectors
- Godspeed IC Type M 28x6.5x2.75
- -3 oil line supply .060 restrictor
- Small JAZ catch can
Electronics:
- Autometer Electronic gauges
- AEM Wideband
- P28 Ectune and EBC (boost by gear)
- 255 HP walbro, Marshal FPG, B&M FPR

Since my last post... I bit the big one and the car is just about done... just need to make my alternator kit and fire her up for the first time. Will post more detailed pictures and dyno results.
I am shooting for 400+ whp 14-16 psi pump gas... Want something pretty killer for street but not quite over the edge...
2.3L + Turbo =

Build Details:
- JDM H23A Vtec Blue Top
- JDM H22A M2B4 LSD trans
- 9lb chromoly 1 piece flywheel
- ACT HD clutch kit 6 pad sprung race disc
- Converted OBD1 http://www.Rywire.com
- Euro R intake manifold http://www.RoskoRacing.com
- 68mm Performance Products TB
Head:
- PDE Head
- SuperTech Valve Springs and Retainers
- Ferrea 6k Series SS Valves, Ferrea Valve Guides, Ferrea Seals
- Port and Polish Exhaust side
- Type S cams
- MLS 60k Cometic gasket
- ARP Head Studs
Bottom:
- Darton MID sleeves
- JE 9-1 Pistons/Rings STD Size 87mm
Which final compression is about 9.6-1 bein 95mm stroke and H23
- Crower H23 Rods
- H23 Crank
- ACL Bearings
- Honda Water/Oil pump
- Kaizen Speed Balance Shaft Eliminator Kit
- Balanced Assembly
- B20Luda Built
Turbo Kit:
- T3/To4e "Big Wheel" Custom 50 trim .63ar Stage 3 wheel
- Synapse H22 Turbo Manifold
- Custom 2.5" Hot/Cold Aluminum IC piping
- Tial Q Bov
- Tial 38mm MVS Vband WG
- 3" V band downpipe and exhaust
- 880cc Precision injectors
- Godspeed IC Type M 28x6.5x2.75
- -3 oil line supply .060 restrictor
- Small JAZ catch can
Electronics:
- Autometer Electronic gauges
- AEM Wideband
- P28 Ectune and EBC (boost by gear)

- 255 HP walbro, Marshal FPG, B&M FPR
Last edited by ESP.net; Jun 21, 2009 at 02:17 PM.
Update from the other thread:
A couple more pictures to do the car some justice...


She made peak power of 411 hp and 340 trq at 15 psi... 4k rpm 275 ft lb torque. at SpeedFactory in Tacoma, WA www.SpeedFactoryRacing.net James is a great tuner! thanks again!
Never turbo'd before took her down the street for lil drive... half throttle brought a smile to my face
hankookies are just not going to cut it! haha
Next plan is to get her broken in change the fan to a better flowing one... and put the slicks on a take her down the track.
7.2 psi 330 hp 275 trq run and 15 psi run 411 hp 340 trq... engines breathing pretty good and probably begs a bigger turbo. But am happy for now.
A couple more pictures to do the car some justice...
She made peak power of 411 hp and 340 trq at 15 psi... 4k rpm 275 ft lb torque. at SpeedFactory in Tacoma, WA www.SpeedFactoryRacing.net James is a great tuner! thanks again!
Never turbo'd before took her down the street for lil drive... half throttle brought a smile to my face
hankookies are just not going to cut it! hahaNext plan is to get her broken in change the fan to a better flowing one... and put the slicks on a take her down the track.
7.2 psi 330 hp 275 trq run and 15 psi run 411 hp 340 trq... engines breathing pretty good and probably begs a bigger turbo. But am happy for now.
Small un exciting update... Recently purchased a used SC6176e
I am made a smart choice... almost decided to run the SC61 as is, seemed to spin freely and have very little to none shaft play, no leaks... but something was telling me to send it out... I had sent the Precision SC6176e to Precision to get a basic rebuild. Turned out little more then basic... bearing material was found inside and I deceided to add a new comp housing because old one was cut off little short from a welded on intake pipe. So quite a few 100's later I am getting it back should be here tom.
I am also putting on my Thermal R&D exhaust 3". Just need a new downpipe made and possibly a new longer turbo oil supply line, slap on my turbo blanket and downpipe wrap and back in business. Will update with dyno numbers in the next few weeks. -John
I am made a smart choice... almost decided to run the SC61 as is, seemed to spin freely and have very little to none shaft play, no leaks... but something was telling me to send it out... I had sent the Precision SC6176e to Precision to get a basic rebuild. Turned out little more then basic... bearing material was found inside and I deceided to add a new comp housing because old one was cut off little short from a welded on intake pipe. So quite a few 100's later I am getting it back should be here tom.
I am also putting on my Thermal R&D exhaust 3". Just need a new downpipe made and possibly a new longer turbo oil supply line, slap on my turbo blanket and downpipe wrap and back in business. Will update with dyno numbers in the next few weeks. -John
Non exciting update. Car is back up and fired up and finito I will most likely have it on the dyno begining of next month with the SC61
Wow that's a nice CRX. A boosted H23 Vtec is some gangsta shiz. My boy back in the day had a boosted EG Hatch with a H22 in it and was the fastest Honda at the time. He ran like 11's in the 1/4 in 1995. His name might ring a bell, Viet Lam. This thread reminded me of him.
Thought id update this thread!
I had my buddy James at SpeedFactoryRacing.net in Tacoma, WA tune it again. He is a great tuner.
James 10.4 1/4 mile old vitara turbo D record car

Comparison:
Old setup: 411hp 341 ft lbs torque at 15 psi 50 trim and smaller intercooler
New setup: 467hp 373 ft lbs torque at 15 psi SC6176e Precision Turbo and Precision 600hp Intercooler
394hp 280 ft lbs torque at 8-9 psi
Car also has a switch as well flip the switch 1st gear 8-9 psi 2nd gear 13 psi 3rd gear 15 psi 4th gear 15 psi
leave swith off runs on 8-9 psi all time... Ectune
I couldn't boost any higher because of the limits that I was reaching on torque on the dynapack

I had my buddy James at SpeedFactoryRacing.net in Tacoma, WA tune it again. He is a great tuner.
James 10.4 1/4 mile old vitara turbo D record car
Comparison:
Old setup: 411hp 341 ft lbs torque at 15 psi 50 trim and smaller intercooler
New setup: 467hp 373 ft lbs torque at 15 psi SC6176e Precision Turbo and Precision 600hp Intercooler
394hp 280 ft lbs torque at 8-9 psi
Car also has a switch as well flip the switch 1st gear 8-9 psi 2nd gear 13 psi 3rd gear 15 psi 4th gear 15 psi
leave swith off runs on 8-9 psi all time... Ectune

I couldn't boost any higher because of the limits that I was reaching on torque on the dynapack




