1000HP K20 NSX Build-Street Car
I joined NSX Prime some time ago and just lurked as many people do….Eventually after building many different cars over the years and even working for a race shop long ago, I decided I had to have a white NSX…
In 2011 I found the PERFECT car for me, or so I thought. A 1993 White NSX that seemed to be taken care of better than any I could find. It had COMPTECH everything! Looked like it was a shop car: Hi Boost Kit for Comptech Supercharger, comptech headers, comptech final drive, AEM, injectors, Gruppe M Gauge Cluster, Type R wheels, and some other parts in the listing. I bought the car sight unseen from California after speaking with the seller who apparently was an older gentleman who bought it with his son and just didn’t drive it. It ships to me in enclosed transported to not have it chance of any damage. I was so excited to finally get another manual Honda that I can just jump in and rip on! I wanted nothing crazy, just some plain fun as I had many other cars with HP close to the 4 digit (1000HP) mark already.
First day of me getting the car, off to a bad start to say the least. The transporter doesn’t call me and doesn’t drop the car off close to my house but instead car down the road so I wouldn’t see him unload it and onto a grassy field area. I get their and the car is off and paperwork hanging in his hand ready to sign. I go over the car and note tons of little damage, paint marks, scratches, chips, windshield heavy scratches, all kinds of stuff on the report and I was pissed! I mean I just spent $2,000 to ship a car so it doesn’t get messed up, I might as well have just threw it on cheap fly by night guy for a fraction of that $. I sign the receipt and jump in my new NSX and see what its all about. I was pretty excited and careful to learn what I had actually just bought as I’ve never even driven one, just rode in one a couple times.
I drove it to the store a couple times to get groceries and back home, maybe 10 miles. I decide its idling a little rough and the seller doesn’t really know much about cars, and I can’t get his middle age son on the phone. I pull off the intake filter and see some oil coming out and smoke out of the valve cover. I decide to pull the plugs immediately. After climbing on top of the motor and car to pull the coil packs and plugs, I realized this car sucks to work on with all the stuff going on in the back area. Each plug I lay out and examine and they look rich but ok, THEN I pull one out soaked with oil, oh no!!!! I do a compression test and sure enough every cylinder is fine except one of them, my heart was sad but I wasn’t discouraged that much yet.
I then go on nsxprime and start researching my options and if it made sense to build a motor C30a or buy a used one, or something else…I then see STMPO with a K20a powered Track car. Definitely not a street car and in 100 pieces and not even finished really but it was a good idea! At this time I had a Civic with a K20A turbo setup making around 1000HP to the flywheel and was crazy on anything besides the ¼ track because of the limited tire size you can run. I start to talk with Ross at STMPO, we exchanged emails and messages for about 2 weeks and then all of a sudden he is gone from everywhere, email, nsxprime, just poof gone. He gave me some ideas and I decided that even though he never made a car that drove on the road with a windshield, I could do something similar but as a normal car with AIR CONDITION and a radio.
I have a lot of tools and a lift at the house so I decided to pull the drivetrain myself the next day. I have no instructions and I’m having a good old time with a buddy just pulling stuff apart. After a while, I realize this car sucks even more and to pull stuff apart, it’s a ton of parts and more work than I expected. I would never do this again as I’m far too slow at doing mechanic work even though I can get most things done.
Skip a little more down the road, I sell off anything that seems normal in the car and definitely never going back to stock again. I send it out to a local shop in South Florida to make some serious modifications as STMPO never emailed me back let alone a motor mount kit I wanted to buy. There was so much work involved with making this swap work, its not even worth it unless the car is wrecked or broken, I should have just fixed the motor and kept it normal. Too late to go back, must press on.
Many years later it gets fitted with some work form 1 shop, then goes to another shop for more details to get done, it doesn’t get done, then it goes and sits for a long time, then it goes to a shop in Miami where they have many K20 powered race cars going in the 8’s in the ¼ mile. They eventually come through with the missing unicorn pieces I needed! Car leaves there with the drivetrain blazing out about 1000HP to the flywheel and running like a champ.
Now I am with a running car from 2011 to 2016 with maybe 10 miles on the car since I bought it. I send it off to finish the interior with 1 shot, my buddy redoes everything on the inside AMAZINGLY.
I have the car at home and working on finishing the exterior front end conversion and some more suspension work before I drive it too much. I’ll be posting pictures in the coming posts. For now, here are some pictures from the beginning of the project.
Thank you Prime for the inspiration.
Engine Modifications:
K20Z3 Head
Ferrea Dual Valve Springs
Ferrea Valves
Skunk2 Racing Camshafts
Skunk2 Intake Manifold
Skunk2 Throttle Body
Hondata Intake manifold Gasket
K-Tuned Coolant Neck
K-Tuned Coil Pack Cover
K24A2 Block
Darton Iron Ductile Sleeves
Wiseco 89mm Pistons
Pauter Heavy Duty Rods with upgraded bolts
Wiseco .225 Wall Heavy Duty Wristpins
L19 ARP headstuds
Cometic Headgasket 89mm
ACL Race Bearings
Balanced Assembly
S2000 Oil Pump with custom pickup modified for K24
Blueprint Racing Oil Baffle for oil scavenging
Hybrid Racing Chain Tensioner
K20a2 Knock Sensor
ARP Crankshaft main bolts
Competition Clutch Twin Disc Lightweight version
ATI Crank Pulley
K20 5 Speed Transmission
Rebuilt with all new bearings, Synchros, etc.
4.389 Honda Final Drive
LSD
PPG Straight Cut 1[SUP]st[/SUP]-4[SUP]th[/SUP] Synchro Gear Set
Custom Engine and Tranny Mounts
DSS Custom BIG Axles NSX-RSX
Wiring and ECU:
AEM V2 ECU 30-6030
AEM activated Relays and Separate Fuse Box
AEM Wideband Gauge 30-4110
AEM 5-Bar Map Sensor
AEM Intake Temperature Sensor
Autometer Cobalt Fuel Gauge
Rywire Custom Wiring harness using NSX and RSX-S Harnesses
AIM Strada Dash with CAN Cable to AEM
AEM Boost Control Solenoid
Shorai Lightweight Battery -5lb
Turbo Modifications:
Precision Turbo GEN2 PT6870 CEA Ball Bearing Turbo .96 A/R
Tial Wastegate MV-R
Stainless Steel Custom Long tube Exhaust Manifold
4” Short Exhaust dump
Oil Scanvenging pump for low mount turbo
Remote Oil Filer
Remote Oil Cooler
Tial Blow Off Valve
Vaccum Port Manifold with all quick connect lines
3 Port Aluminum Catch Can from Valve Cover
1000HP Garrett Turbo Air to Water Intercooler with custom endtanks
Large Heat exchanger up front for water cooling
Large Water Ice Box with remote drain line in trunk
Bosch Water Ice box Pump
Fuel Modifications:
Stock OEM fuel tank
Intank Walbro Fuel Pump
Fuel Surge tank from intank pump
Bosch twin 044 Fuel pumps activated by AEM
Fuel 1 way Check valves
Weldon Fuel Pressure Gauge
K-Tuned Fuel Rail
Stainless Fuel lines being changed out slowly for lightweight Black E85 lines
E85 Billet Fuel Filter
ID2000 Fuel Injectors
Suspension Modifications:
NSX-R lower front bar
Carbing Rear Upper Aluminum Strut Bar
Titanium Dave Rear Subframe Camber correction bushings
Titanium Dave Rear Rear Toe Links
New Outer tie rods
Urethane Steering Rack bushings
Bronze Steering Rack Australian bushing insert
Dali Racing Sway Bars with urethane bushings
Megan Racing Coilovers
Stoptech 2 piece Big Brake Kit Slotted –Front
Racing Brake 2 piece Big Brake Kit Slotted- Rear with OEM Ebrake
Stainless Steel Brake Lines
Carbon 6 Front Compliance Clamps
Enkei PF-01 17x 8
Enkei PF-01 18x 10.5
Toyo R888 Proxes 205/40/17
Toyo R888 Proxes 285/30/18
Aluminum Wheel Lugs
Interior Modifications:
Skunk2 Shift Knob
Heavy Weight Stainless Shift extenstion
Science of Speed Short Shifter
K-Tuned Custom Shifter Cables
Sparco Quick Steering Wheel disconnect
Carbon Fiber Center Console
Carbon Fiber AIM Dash with LED turn signals
Carbon Fiber “H” horn button
Black With Red Stitching Suede Doors
Black With Red Stitching Suede Dash, and pillars
Black With Red Stitching Suede Headliner
Black With Red Stitching floor pieces
Black With Red Stitching Suede armrest
Buddy Club Seat Rails
Brodway Wide Rear Mirror
Recaro Seats
Pioneer Apple Car Play AVH4100NEX
Door Speakers Alpine Type R 6.5”
Custom Center Console Speakers Pioneer TSD 4”
Rear Camera wired into reverse lights
Alarm with GPS Tracking installed
Mugen Foot Pedals
OEM Black and Red Floor Mats
Cooling Modifications:
Aluminum Racing Radiator
S2CarbonWorks GT Aluminum Radiator Cooling Panel
Honda OEM Thermostat
Future Pending Modifications:
PDF Racing ABS Delete with Tilton Proportioning Valve
DownForce 2002 Conversion
Seibon Carbon Fiber Type R Wing
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I joined NSX Prime some time ago and just lurked as many people do….Eventually after building many different cars over the years and even working for a race shop long ago, I decided I had to have a white NSX…
In 2011 I found the PERFECT car for me, or so I thought. A 1993 White NSX that seemed to be taken care of better than any I could find. It had COMPTECH everything! Looked like it was a shop car: Hi Boost Kit for Comptech Supercharger, comptech headers, comptech final drive, AEM, injectors, Gruppe M Gauge Cluster, Type R wheels, and some other parts in the listing. I bought the car sight unseen from California after speaking with the seller who apparently was an older gentleman who bought it with his son and just didn’t drive it. It ships to me in enclosed transported to not have it chance of any damage. I was so excited to finally get another manual Honda that I can just jump in and rip on! I wanted nothing crazy, just some plain fun as I had many other cars with HP close to the 4 digit (1000HP) mark already.
First day of me getting the car, off to a bad start to say the least. The transporter doesn’t call me and doesn’t drop the car off close to my house but instead car down the road so I wouldn’t see him unload it and onto a grassy field area. I get their and the car is off and paperwork hanging in his hand ready to sign. I go over the car and note tons of little damage, paint marks, scratches, chips, windshield heavy scratches, all kinds of stuff on the report and I was pissed! I mean I just spent $2,000 to ship a car so it doesn’t get messed up, I might as well have just threw it on cheap fly by night guy for a fraction of that $. I sign the receipt and jump in my new NSX and see what its all about. I was pretty excited and careful to learn what I had actually just bought as I’ve never even driven one, just rode in one a couple times.
I drove it to the store a couple times to get groceries and back home, maybe 10 miles. I decide its idling a little rough and the seller doesn’t really know much about cars, and I can’t get his middle age son on the phone. I pull off the intake filter and see some oil coming out and smoke out of the valve cover. I decide to pull the plugs immediately. After climbing on top of the motor and car to pull the coil packs and plugs, I realized this car sucks to work on with all the stuff going on in the back area. Each plug I lay out and examine and they look rich but ok, THEN I pull one out soaked with oil, oh no!!!! I do a compression test and sure enough every cylinder is fine except one of them, my heart was sad but I wasn’t discouraged that much yet.
I then go on nsxprime and start researching my options and if it made sense to build a motor C30a or buy a used one, or something else…I then see STMPO with a K20a powered Track car. Definitely not a street car and in 100 pieces and not even finished really but it was a good idea! At this time I had a Civic with a K20A turbo setup making around 1000HP to the flywheel and was crazy on anything besides the ¼ track because of the limited tire size you can run. I start to talk with Ross at STMPO, we exchanged emails and messages for about 2 weeks and then all of a sudden he is gone from everywhere, email, nsxprime, just poof gone. He gave me some ideas and I decided that even though he never made a car that drove on the road with a windshield, I could do something similar but as a normal car with AIR CONDITION and a radio.
I have a lot of tools and a lift at the house so I decided to pull the drivetrain myself the next day. I have no instructions and I’m having a good old time with a buddy just pulling stuff apart. After a while, I realize this car sucks even more and to pull stuff apart, it’s a ton of parts and more work than I expected. I would never do this again as I’m far too slow at doing mechanic work even though I can get most things done.
Skip a little more down the road, I sell off anything that seems normal in the car and definitely never going back to stock again. I send it out to a local shop in South Florida to make some serious modifications as STMPO never emailed me back let alone a motor mount kit I wanted to buy. There was so much work involved with making this swap work, its not even worth it unless the car is wrecked or broken, I should have just fixed the motor and kept it normal. Too late to go back, must press on.
Many years later it gets fitted with some work form 1 shop, then goes to another shop for more details to get done, it doesn’t get done, then it goes and sits for a long time, then it goes to a shop in Miami where they have many K20 powered race cars going in the 8’s in the ¼ mile. They eventually come through with the missing unicorn pieces I needed! Car leaves there with the drivetrain blazing out about 1000HP to the flywheel and running like a champ.
Now I am with a running car from 2011 to 2016 with maybe 10 miles on the car since I bought it. I send it off to finish the interior with 1 shot, my buddy redoes everything on the inside AMAZINGLY.
I have the car at home and working on finishing the exterior front end conversion and some more suspension work before I drive it too much. I’ll be posting pictures in the coming posts. For now, here are some pictures from the beginning of the project.
Thank you Prime for the inspiration.
Engine Modifications:
K20Z3 Head
Ferrea Dual Valve Springs
Ferrea Valves
Skunk2 Racing Camshafts
Skunk2 Intake Manifold
Skunk2 Throttle Body
Hondata Intake manifold Gasket
K-Tuned Coolant Neck
K-Tuned Coil Pack Cover
K24A2 Block
Darton Iron Ductile Sleeves
Wiseco 89mm Pistons
Pauter Heavy Duty Rods with upgraded bolts
Wiseco .225 Wall Heavy Duty Wristpins
L19 ARP headstuds
Cometic Headgasket 89mm
ACL Race Bearings
Balanced Assembly
S2000 Oil Pump with custom pickup modified for K24
Blueprint Racing Oil Baffle for oil scavenging
Hybrid Racing Chain Tensioner
K20a2 Knock Sensor
ARP Crankshaft main bolts
Competition Clutch Twin Disc Lightweight version
ATI Crank Pulley
K20 5 Speed Transmission
Rebuilt with all new bearings, Synchros, etc.
4.389 Honda Final Drive
LSD
PPG Straight Cut 1[SUP]st[/SUP]-4[SUP]th[/SUP] Synchro Gear Set
Custom Engine and Tranny Mounts
DSS Custom BIG Axles NSX-RSX
Wiring and ECU:
AEM V2 ECU 30-6030
AEM activated Relays and Separate Fuse Box
AEM Wideband Gauge 30-4110
AEM 5-Bar Map Sensor
AEM Intake Temperature Sensor
Autometer Cobalt Fuel Gauge
Rywire Custom Wiring harness using NSX and RSX-S Harnesses
AIM Strada Dash with CAN Cable to AEM
AEM Boost Control Solenoid
Shorai Lightweight Battery -5lb
Turbo Modifications:
Precision Turbo GEN2 PT6870 CEA Ball Bearing Turbo .96 A/R
Tial Wastegate MV-R
Stainless Steel Custom Long tube Exhaust Manifold
4” Short Exhaust dump
Oil Scanvenging pump for low mount turbo
Remote Oil Filer
Remote Oil Cooler
Tial Blow Off Valve
Vaccum Port Manifold with all quick connect lines
3 Port Aluminum Catch Can from Valve Cover
1000HP Garrett Turbo Air to Water Intercooler with custom endtanks
Large Heat exchanger up front for water cooling
Large Water Ice Box with remote drain line in trunk
Bosch Water Ice box Pump
Fuel Modifications:
Stock OEM fuel tank
Intank Walbro Fuel Pump
Fuel Surge tank from intank pump
Bosch twin 044 Fuel pumps activated by AEM
Fuel 1 way Check valves
Weldon Fuel Pressure Gauge
K-Tuned Fuel Rail
Stainless Fuel lines being changed out slowly for lightweight Black E85 lines
E85 Billet Fuel Filter
ID2000 Fuel Injectors
Suspension Modifications:
NSX-R lower front bar
Carbing Rear Upper Aluminum Strut Bar
Titanium Dave Rear Subframe Camber correction bushings
Titanium Dave Rear Rear Toe Links
New Outer tie rods
Urethane Steering Rack bushings
Bronze Steering Rack Australian bushing insert
Dali Racing Sway Bars with urethane bushings
Megan Racing Coilovers
Stoptech 2 piece Big Brake Kit Slotted –Front
Racing Brake 2 piece Big Brake Kit Slotted- Rear with OEM Ebrake
Stainless Steel Brake Lines
Carbon 6 Front Compliance Clamps
Enkei PF-01 17x 8
Enkei PF-01 18x 10.5
Toyo R888 Proxes 205/40/17
Toyo R888 Proxes 285/30/18
Aluminum Wheel Lugs
Interior Modifications:
Skunk2 Shift Knob
Heavy Weight Stainless Shift extenstion
Science of Speed Short Shifter
K-Tuned Custom Shifter Cables
Sparco Quick Steering Wheel disconnect
Carbon Fiber Center Console
Carbon Fiber AIM Dash with LED turn signals
Carbon Fiber “H” horn button
Black With Red Stitching Suede Doors
Black With Red Stitching Suede Dash, and pillars
Black With Red Stitching Suede Headliner
Black With Red Stitching floor pieces
Black With Red Stitching Suede armrest
Buddy Club Seat Rails
Brodway Wide Rear Mirror
Recaro Seats
Pioneer Apple Car Play AVH4100NEX
Door Speakers Alpine Type R 6.5”
Custom Center Console Speakers Pioneer TSD 4”
Rear Camera wired into reverse lights
Alarm with GPS Tracking installed
Mugen Foot Pedals
OEM Black and Red Floor Mats
Cooling Modifications:
Aluminum Racing Radiator
S2CarbonWorks GT Aluminum Radiator Cooling Panel
Honda OEM Thermostat
Future Pending Modifications:
PDF Racing ABS Delete with Tilton Proportioning Valve
DownForce 2002 Conversion
Seibon Carbon Fiber Type R Wing
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