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The Ultimate KA Valvetrain Thread

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Scoot

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Discussion starter · #1 · (Edited)
So I have come to realize the KA Valvetrain parts aren't very plentiful. So I figured that I'd use my spare time wisely and put together a guide. This thread

will include Cams, Valve Springs, and Valves. I will be divinding the thread into 3 sections.

Also FYI, to my understanding and according to Aftermarket Manf., the stock Valve springs max lift is 9.5mm.

So Let's get started
- SOHC I never forget you guys


Camshaft Section:
DOHC:
Stock Cams -

Manufacturer: Nissan
Duration: 232
Lift: n/a
Type: Intake
MSRP: n/a
P#: n/a


Manufacturer: Nissan
Duration: 248
Lift: n/a
Type: Exhaust
MSRP: n/a
P#: n/a


Performance Cams -

Manufacturer: JWT (www.JimWolfTechnology.com)
Durtaion: 275
Lift: 9.75
Type: Pair
MSRP: $560
P#: A2401-N00S1
Notes: S1 Model


Manufacturer: Crower (www.Crower.com)
Duration: 256
Lift: 9
Type: Pair
MSRP: n/a
P#: 61351-2
Notes: Stage 1


Manufacturer: Crower
Duration: 264
Lift: 9.3
Type: Pair
MSRP: n/a
P#: 61351T-2
Notes: Stage 2


Manufacturer: Crower
Duration: 272
Lift: 10.15
Type: Pair
MSRP: n/a
P#: 613512-2
Notes: Stage 3 N/A


Manufacturer: Crower
Duration: 280
Lift: 10.02
Type: Pair
MSRP: n/a
P#: 613513-2
Notes: Stage 3 FI


Manufacturer: Crower
Duration: 288
Lift: 10.27
Type: Pair
MSRP: n/a
P#: 613514-2
Notes: Stage 3 N/A Race


Manufacturer: PDM (www.PDM-Racing.com)
Duration: I = 272 / E = 278
Lift: 1 = 9.5 / E = 9.75
Type: Pair
MSRP: $620.65
P#: n/a
Notes: C.702.S Stage 2


Manufacturer: PDM
Duration: 272
Lift: 9.5
Type: Pair
MSRP: $620.65
P#: n/a
Notes: C.702.T Stage 2 Turbo


Manufacturer: BC (www.BrianCrower.com)
Duration: 264
Lift: 1 = 9.52
Type: Pair
MSRP: n/a
P#: BC0211
Notes: Stage 2 Street/Strip


Manufacturer: BC
Duration: 272
Lift: 10.19
Type: Pair
MSRP: n/a
P#: BC0212
Notes: Stage 3 Race


Manufacturer: CrowCams (www.CrowCams.com.au)
Duration: n/a
Lift: n/a
MSRP: n/a
P#: 352900
Notes: From Site "KA24DE SOHC" - IDK which one it's talking about










SOHC:
Stock -

Manufacturer: Nissan
Duration: I = 251/ E = 258
Lift: 10.37
MSRP: n/a
P#: n/a


Performance -

Manufacturer: JWT (www.JimWolfTechnology.com)
Duration: I = 248 / E = 256
Lift: 10.55
MSRP: $375
P#: A2409-N00S1
Notes: S1 Model


Manufacturer: PDM (www.PDM-Racing.com)
Duration: I = 260 / E = 268
Lift: I = 10.6 / E = 11.02
MSRP: $193.17 + $250
P#: n/a
Notes: C.406


Manufacturer: PDM
Duration: I = 268 / E = 272
Lift: I = 11.02 / E = 11.17
MSRP: $193.17 + $250
P#: n/a
Notes: C.404.H


Manufacturer: PDM
Duration: I = 268 / E = 272
Lift: I = 11.02 / E = 11.17
MSRP: $264.98 + $250
P#: n/a
Notes: C.404.H-T


Manufacturer: PDM
Duration: I = 300 / E = 300
Lift: 12.65
MSRP: $327.56 + $250
P#: n/a
Notes: C.411.H


Manufacturer: ANTRX (www.ANTRX.com)
Duration: I = 248 / E = 256
Lift: n/a
MSRP: n/a
P#: n/a
Notes: R6


Manufacturer: ANTRX
Duration: I = 288 / E = 292
Lift: n/a
MSRP: n/a
P#: n/a
Notes: R5


Manufacturer: ANTRX
Duration: I = 270 / E = 270
Lift: n/a
MSRP: n/a
P#: n/a
Notes: R4


Manufacturer: CrowCams (www.CrowCams.com.au)
Duration: n/a
Lift: n/a
MSRP: n/a
P#: 352900
Notes: From Site "KA24DE SOHC" - IDK which one it's talking about


Manufacturer: HybridKA (www.HybridKA.com)
Duration: I = 270 / E = 272
Lift: I = 11.07 / E = 11.2
MSRP: $185
P#: n/a
Notes: Stage 1


Manufacturer: HybridKA
Duration: n/a
Lift: n/a
MSRP: n/a
P#: n/a
Notes: Stage 2


Manufacturer: CourtesyPArts (www.CourtesyParts.com)
Duration: 270
Lift: 10.05
MSRP: $300
P#: 13020-00001
Notes: Hi-Performance


Manufacturer: CourtesyPArts
Duration: I = 288 / E = 292
Lift: I = 13.75 / E = 14.07
MSRP: $300
P#: 13020-00003
Notes: Race










Valve Spring Section:
DOHC:
Stock Springs -

Manufacturer: Nissan
Max Lift: 9.5
LBS: n/a
Type: Single
MSRP: n/a
P#: n/a


Performance Springs -

Manufacturer: JWT (www.JimWolfTechnology.com)
Max Lift: n/a
LBS: n/a
Type: Dual
MSRP: n/a
P#: AKA24-DSPRR
Notes: New Version In Development


Manufacturer: Crower (www.Crower.com)
Max Lift: n/a
LBS: n/a
Type: Dual
MSRP: n/a
P#: 68188-16
Notes: n/a


Manufacturer: BC (www.BrianCrower.com)
Max Lift: n/a
LBS: n/a
Type: Dual
MSRP: n/a
P#: BC1010
Notes: No Machine Work Required


Manufacturer: R/D (www.RDValveSpring.com)
Max Lift: 11.25
LBS: n/a
Type: n/a
MSRP: Call
P#: 350-N
Notes: n/a


Manufacturer: Ferrea (www.Ferrea.com)
Max Lift: 12.5
LBS: 254
Type: Dual
MSRP: Call
P#: S10043
Notes: Requires Retainers (E11021) & Seat Locators (SL1064)


Manufacturer: SuperTech (www.SuperTechPErformance.com)
Max Lift: n/a
LBS: n/a
Type: Dual
MSRP: Call
P#: n/a
Notes: n/a










SOHC:
Stock -

Manufacturer: Nissan
Max Lift: n/a
LBS: n/a
Type: Single
MSRP: n/a
P#: n/a


Performance -

Manufacturer:
Max Lift: n/a
LBS: n/a
Type: n/a
MSRP: n/a
P#: n/a
Notes: n/a

In The Proccess of being updated









Valve Section:
DOHC:
Stock Valves -

Manufacturer: Nissan
Size: 36.6mm
SOS: 0mm
Type: Intake
MSRP: n/a
P#: n/a


Manufacturer: Nissan
Size: 31.3mm
SOS: 0mm
Type: Exhaust
MSRP: n/a
P#: n/a


Performance Valves -

Manufacturer: Crower (www.Crower.com)
Size: 37.1mm
SOS: .5mm
Type: Intake
MSRP: n/a
P#: 97458I-8


Manufacturer: Crower
Size: 31.8mm
SOS: .5mm
Type: Exhaust
MSRP: n/a
P#: 97458E-8


Manufacturer: BC (www.BrianCrower.com)
Size: 37.1mm
SOS: .5mm
Type: Intake
MSRP: n/a
P#: BC3210


Manufacturer: BC
Size: 31.8mm
SOS: .5mm
Type: Exhaust
MSRP: n/a
P#: BC3211


Manufacturer: Ferrea (www.Ferrea.com)
Size: 36.6mm
SOS: 0mm
Type: Intake
MSRP: n/a
P#: F1835P


Manufacturer: Ferrea
Size: 31.3mm
SOS: 0mm
Type: Exhaust
MSRP: n/a
P#: F1837P


Manufacturer: Ferrea
Size: 37.6mm
SOS: 1mm
Type: Intake
MSRP: n/a
P#: F1836P


Manufacturer: Ferrea
Size: 32.3mm
SOS: 1mm
Type: Exhaust
MSRP: n/a
P#: F1838P


Manufacturer: SI Valves (www.SIValves.com)
Size: 37.1mm
SOS: .5mm
Type: Intake
MSRP: n/a
P#: 13201-53F00H


Manufacturer: SI Valves
Size: 31.8mm
SOS: .5mm
Type: Exhaust
MSRP: n/a
P#: 13202-53F00H










SOHC:
Stock Valves -

Manufacturer: Nissan
Size: n/a
SOS: 0mm
Type: Intake
MSRP: n/a
P#: n/a


Manufacturer: Nissan
Size: n/a
SOS: 0mm
Type: Exhaust
MSRP: n/a
P#: n/a


Performance Valves -

Manufacturer: SI Valves (www.SIValves.com)
Size: n/a
SOS: .5mm
Type: Intake
MSRP: n/a
P#: 13201-40F00H


Manufacturer: SI Valves
Size: n/a
SOS: .5mm
Type: Exhaust
MSRP: n/a
P#: 13202-40F01H


Updated 9/26

**Also any info on stock specs would be greatly appreciated, also if any other performance valvetrain parts are found, plz share them with us :D **
 
#2 ·
you forgot pdm

C.702.S Stage II Cams - Intake 221 duration @.050” .379 lift; (272 advertised duration), .380 lift; Exhaust 231 duration @ .050" lift, (278 advertised duration), .390 lift.
These cams are VERY streetable, with no injector or computer upgrades required, and pass the strictest emissions with proper tuning.

Price - $620.65 / set




PDM Stage II DOHC Turbo Cams – Now PDM offers a performance Turbo grind for those turboing your KA motor. Excellent profile for turbocharged KA street motor. These cams have higher lifts and durations with smooth idle good mid range, and wild upper end hp to redline. For those that want more from your torquey turbo KA. Good for hybrid T3/T4 turbos with boost levels up to 15-18 psi. Exhaust cams have been optimized and ground to help spool up the turbo faster, and reduce lag.

C.702.T STAGE II DOHC Turbo Cams – Intake 221 duration @.050”, .380 lift Exhaust 221 duration @.050” .380 lift

Price - $620.65 / set



and for the sohcs



PDM Racing and Colt Cams are pleased to announce 4 different versions of the popular KA24E single overhead cam, that is popular in the 1989 and 1990 Nissan 240SX, and many of their hardbody pickup trucks.

Stock Cams: Intake 251 degrees duration, .415 lift; Exhaust 258 degrees duration, .415 lift.

C.406 - mild performance upgrade, that wakes up any stock engine with good emissions results, and good in automatics. {Intake 260 degrees duration, .424 valve lift, Exhaust 268 degrees duration, .441 valve lift.}

$193.17 + $250 core charge
C404.H - Strong performer, with good midrange pull to redline. O.K. with automatics. Our strongest seller with the most smiles! {Intake 268 degrees duration, .441 valve list, Exhaust 272 degrees duration, .447 valve lift.} (note: requires cam towers to be milled .025")

$193.17 + $250 core charge
C.404.HTurbo - Turbo profile for the 12 valve KA. Same strong performance as our naturally aspirated C404 cam, but designed with less overlap to ease with the exhaust valves on a turbo motor. Very good good midrange pull to redline. Intake 268 degrees duration, .441 valve list, Exhaust 272 degrees duration, .447 valve lift.} (note: requires cam towers to be milled .025")

$264.98 + $250 core charge

C.411.H - Full race - not very streetable, and requires stiffer valve springs, computer re-programming and possible injector and fuel pump upgrades. Not a bolt-in cam, and not recommended for street use. {Intake 300 degrees duration, .506 valve lift, Exhaust .300 degrees duration, .506 valve lift. (note: requires cam towers to be milled .060")

$327.56 + $250 core charge
 
#9 ·
I would... I would... Add the valvetrain stuff in here to keep shit simple. Nice posts BTW Scott.
 
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#11 ·
Haha... Just as long as it gets done in due time Scott. In due time...
 
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#18 ·
I do believe that the stock CA valvesprings and retainers are interchangeable with the DOHC heads and are fairly inexpensive. That's wat I'm plannin for my car. My source is from a highly respectable member of another board who is known for KA buildups
 
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Scoot
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