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Pro 163 |
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| Application |
Honda K20/K24 (CRV K24A1, Type S K20A2, Type R K20A) |
| Recommended Use |
- Pro All Motor, All Motor Street
- USAC Midget
- High HP open class Road Race
- 2.4L+ Displacement Engines with the intent to achieve 350-400 DynoJet horsepower.
- E85, Methanol, Gasoline
- Not recommended for high boost applications
- If you are competitively racing and you are running one of our competitor's heads, make the switch and let the results do the talking
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| Features and Benefits |
- Slow-cut precision porting by Weld Tech, the people who invented CNC head porting.
- Custom intake valve that dramatically outperforms other off-the-shelf valves.
- Full length bronze manganese guide for valve stability.
- Our intake port has very little turbulence and great velocity when compared to our competitors. You can hear the difference on the bench!
- Unique power producing exhaust port design.
- Need to port match to your Kinsler induction? Simple...just tell Kinsler you have a 4 Piston 163 and they will CNC match your induction to this port entry.
- Our heads are all shipped with installation tips, a sheet of desired clearances for setting up your engine, and a flow chart from your head.
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| Intake Runner Volume |
163cc |
| Intake Valve Size |
37mm |
| Exhaust Valve Size |
30mm |
**Core Required
***Check your piston spec sheet. You need a 1.500" or larger intake valve pocket diameter to run a 37mm valve. Many popular Wiseco and CP pistons come standard with this valve pocket. Call or email for further instruction.
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Pro 163 CNC Cylinder Head
-CNC Ported intake and exhaust ports
-Manganese Bronze Valve Guides (16)
-Oversized Intake Seats (8)
-Racing Valve Job
-Resurface
-NO VALVES |
$1675 |
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Pro 163 CNC Cylinder Head
-CNC Ported intake and exhaust ports
-Manganese Bronze Valve Guides (16)
-Oversized Intake Seats (8)
-Racing Valve Job
-Resurface
-Custom 37mm Intake Valves (8)
-Ferrea 6000 30mm Exhaust Valves (8) |
$1950 |
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Nickel Aluminum Bronze Intake Seat Option
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$150 |
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A3 Beryllium Exhaust Seat Option
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$300 |
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Open Combustion Chamber with CNC up to 90mm bore
Only recommended if you have trouble with piston clearance. Remember this will add volume to the chamber and lower compression.
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$150 |
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| Porting and head package prices assume a disassembled and clean cylinder head. Refer to pricing below if you need your cylinder head disassembled, cleaned, and reassembled |
Disassemble |
$50 |
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| Hot Tank and Soda Blast |
$50 |
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| Assemble |
$50 |
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Ship Heads to:
4 Piston Racing
1298 E. US Hwy 136, Suite B
Pittsboro, IN 46167
Please include any special instructions and contact information. You may also send a check for payment, or it can be taken care of with a credit card or PayPal. |
Lift |
Intake CFM |
Exhaust CFM |
.200 |
180 |
134 |
.300 |
256 |
183 |
.400 |
318 |
216 |
.500 |
354 |
230 |
.550 |
365 |
231 |
.600 |
372 |
233 |
.650 |
375 |
237 |
| Superflow 600 @ 28" |
Jeff Rosario 110mph 1/8, 10.22 1/4 |
381whp E85 street car |
Alex Pagan 10.21 @ 131 Pro 163
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9.4 @ 148 Pro All Motor on Pro 163 Port and 2600cc
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