Head Build (a whole lot of random info and parts) IN ONE!!!

[tom550]

VALVE SPRINGS:
Pioneer Inc Automotive Products, can be bought from Summit Racing
Intake Part Number: RV-1034-4 *set of 4, so buy qty 2*
Exhaust Part Number: RV-611-4 *set of 4*

And you can just use your stock inner springs with these, or order new Nissan ones.
http://www.summitracing.com/parts/PIO-RV-1034-4/
http://www.summitracing.com/parts/PIO-RV611-4/

I also wanted to add- when purchasing the sohc valve springs you have more options.
I noticed that the Pioneer springs mentioned were on backorder from summit which was acceptable to me. I made some phone calls to Federal mogul and found their application list off their website.
http://www.21cgt.com/FMWebCatalog/frmSpecification.aspx
I found the appropriate part number that looks like a good candidate which sure enough cross references the same to the pioneer spring listed. The springs are off a 1968 ford bronco 4.7l 289ci engine (also found in lots of other 60s fords).

You can now look that up anywhere and get whatever valve springs your heart desires. I opted for some federal mogul sealed power VS672 springs off rockauto for only a buck and a half each. Hope this helps someone else not looking to wait.

used stock inner and outer intake and exhaust valve springs and compared them to the Pioneer Outer Springs with brand new stock inner springs
------------Intake---------Exhaust
Stock:------132 lbs---------100lbs
Upgrade:---160 lbs---------128lbs

I got the specs back from the shop using the Pioneer outer springs with Stock OEM inner springs

Intall Height ( No Shims)

1.930 Intake
1.820 Exhaust

Install height will change and vary depending how much material is machined from the valve seats. But this was my measurements with a 5 angle valve job.

Open and Closed Pressure with factory shims (0.040)

Intake:
105 lbs @ 1.890 Closed
250 lbs @ 1.440 Open

Exhaust:
105 lbs @ 1.780 Closed
260 lbs @ 1.335 Open

My engine builder said after a few heat cycles and breaking in the motor, most springs lose pressure right off the back. So we upgrades the factory shims to 0.060 shims to get back any pressure we may lose once the motor is broken in. The shim change should add about 10 lbs.

https://www.horsepowerparts.com/index.p ... _id=245747

Heres the RV-611-4 can also be had for $1.12 each before shipping

and the intake springs RV-1034-4

https://www.horsepowerparts.com/index.p ... _id=247517

$21.84 before shipping

I guess my 11 second stock block sohc is gonna be cheaper than i thought!

Edit: $28.39 after shipping

http://www.engineproparts.com/downloads ... change.pdf

looks like o and j updated their site cuz i didnt see these yesterday:
http://www.ojperformance.com/Online%20S ... t=0&page=1
http://www.ojperformance.com/Online%20S ... t=0&page=1


inner springs

[13206] SEAT-VALVE SPRING,INNER
http://www.courtesyparts.com/13206-seat ... _3180_3189&

http://www.partswebsite.com/nissancatal ... type=parts






VALVES:

I wanted to contribute for people building:
http://www.sivalves.com/ocforeign_valvessp_nis.html

SI valves makes swirl polished undercut valves for the single.
I just ordered 4 of them today. FYI they list as .5mm OS but that's a print mistake, they are direct drop in without seat modification. They were only 11 bux ea when I ordered.

O and J:
http://www.ojperformance.com/Online%20S ... t=0&page=1
http://www.ojperformance.com/Online%20S ... t=0&page=1





ARP HEAD STUDS:

Ok so I searched SOHC ARP in the search bar and this is a question that is brought up at least 3 times a month, lol. So lets clear up all confusion and vote to sticky this so future SOHC guys can get there answer quick. First off there is no ARP part number in the catalog for a single cam ka. Its an assortment of other studs, nuts and washers. Companies basicly measure call arp and get what they need. Usually sites will have the part number listed like (arp pt # custom)
The part numbers are below for the head studs

ARP KA24E headstud "kit" per Grimsta

Stud: 10 x AM5.100-1LB
Nut: 10 x 300-8344 $4.30
Washer: 10 x 200-8519

****The main studs are exactly the same as any kit for the DOHC****

You can get both main studs and head studs from the guys below

Where to buy
atomicspeedware Link
http://www.atomicspeedware.com/ka24esohc.aspx

O&J Performance Link
http://estore.websitepros.com/1636426/C ... +Fasteners

Phase2Motortrend Link *main stud only*
http://www.phase2motortrend.com/arpmastkitka.html

DOHC KA stud kit works, you just have to back the studs out 2 turns.

O and J
http://www.ojperformance.com/Online%20S ... t=0&page=1
http://www.ojperformance.com/Online%20S ... t=0&page=1





ROCKER ARM:
O and J:
MACHANICAL LIFTER:
http://www.ojperformance.com/Online%20S ... t=0&page=1

NOTE:Mechanical Lifters could take 3 to 6 weeks for delivery.
Must use O&J Performance Mechanical Lifters Camshaft with this product.
REMEMBER:Customer needs to provide a core or a $75.00 core charge will apply.

Nismo:
http://www.nismoparts.com/catalog/?section=324#1193

http://www.partswebsite.com/nissancatal ... type=parts




CAMSHAFT:

89-90 240sx STOCK cam
intake: 240 degrees duration, .409 in valve lift
exhaust: 248 degrees duration, .409 in valve lift

90-97 Hardbody STOCK cam
intake: 232 degrees duration, .382 in valve lift
exhaust: 232 degrees duration, .382 in valve lift

Colt:

PROF.-----------------DURATION--VALVE
I.D. #-----------------@.050------ADV.-------LIFT
-----------INT.-------187°-------240°--------.409
-----------EXH.-------194°-------248°--------.409
STOCK (Car)


C.406.H-----INT.-------195°-------260°-------.418
-----------EXH.-------204°-------268°-------.435
MILD PERFORMANCE-straight drop in
Power band 1500-5500 rpm/ good in auto


C.404.H-----INT.-------205°-------268°-------.435
-----------EXH.-------210°-------272°-------.435
STREET GRIND
Power band is approx. 2200 - 6500 rpm


C.449.H----Prim Int-----199°-------264°-------.428
Tri Flow----Sec Int------187°-------254°-------.428
-----------Exh.--------204°------268°--------.435
NEW TRI-FLOW 1
Hi Torque bottom to midrange
Straight drop in. Power band is approx. 1200-5500 rpm


C.440.H----Prim Int-----218°-------284°-------.458
Tri-Flow---Sec Int-------205°-------268°-------.432
-----------Exh.--------218°-------284°-------.458
NEW TRI-FLOW 2
(Out performs the C.404.H
almost everywhere)
Power band is approx. 2000 - 7000 rpm


C.411.H-----INT.-------237°-------300°-------.500
-----------EXH.-------237°-------300°-------.500
FULL RACE ONLY
Power Band is approx. 4000 - 8000 rpm


C.878.H----INT.--------214°-------280°-------.405
----------EXH.--------214°-------280°-------.405
High Duration
STOCK LIFT (class race rules)


C.879.H-----INT.-------226°-------290°-------.409
-----------EXH.-------226°-------290°-------.409
High Duration
STOCK LIFT (class race rules)


C.878.H-----INT.-------214°-------280°-------.405
C.879.H-----EXH.-------226°-------290°-------.409
High Duration
STOCK LIFT (class race rules)

Our most popular grinds for the 12V SOHC Nissan's is known as the "TRI FLOW".
The principal behind the design is to open the intake valves progressively.
We find opening both valves at the same time causes more bottom end loss than necessary.
By opening one valve first allows the fuel to travel across the chamber at a greater velocity and then helps pull in the second charge.
These profiles also help cut down on overlap and work great in Turbo's and N.O.S.
applications.

O and J:
MECHANICAL LIFTERS:
MECHANICAL LIFTERS Stage 1 (280 Duration 480-485 Lift)
MECHANICAL LIFTERS Stage 2 (290 Lift 490-495 Lift)
MECHANICAL LIFTERS Stage 3 (300 Duration 500-505 Lift)
http://www.ojperformance.com/Online%20S ... t=0&page=1

NOTE:Camshafts could take 3 to 6 weeks for delivery.
Must use O&J Performance Mechanical Lifters with this products.
REMEMBER:Customer needs to provide a core or a $75.00 core charge will apply

HYDRAULIC LIFTERS:
HYDRAULIC LIFTERS Stage 1 (266 Duration 435 Lift)
HYDRAULIC LIFTERS Stage 2 (270 Duration 445 Lift)
http://www.ojperformance.com/Online%20S ... t=0&page=1

NOTE:Camshafts could take 3 to 6 weeks for delivery.
REMEMBER:Customer needs to provide a core or a $75.00 core charge will apply.

Jim Wolf Tech:
S1 BILLET CAM 89-90 240SX 90-97 P/U E256 / I248 .422"
GOOD IDLE EXCELLENT TORQUE CURVE.
http://jimwolftechnology.com/customer_p ... p?PartID=2

Nismo:
These cams are designed for the SOHC 12 valve KA24 engine. The R4 camshaft is a mild range/loopy idle for manual trans cars and the R6 is a milder cam designed to work with automatic trans. The R5 race cam requires the use of race pistons and alternate valve train components. (listed on this page). When installing any new camshaft, new OE rocker arms must be used. OE rocker arm ratio is 1.422:1. Basic cam specs are indicated in ( ).

Hi-Perf cam R6
(int 248/.422 in)
ext 256/.422 in)

Hi-perf cam R4
(int 270/.402 in)

Race Cam
(int 288/.550 in)
(ext 292/.563 in)
http://www.nismoparts.com/catalog/?section=324#1193

4x4parts:
High Performance Cam
int = 248 degrees/.422" lift.
exh= 256 degrees/.422" lift
Provides good idle and excellent torque curve.
Designed to be used with the OEM valve springs and retainers.
Provides 10% increase in HP.
https://www.4x4parts.com/nissan/high-pe ... -3514.html




lots of ka24e d21 parts
http://www.courtesyparts.com/hardbody-t ... _3189.html

anything i missed?

[nis720]

Nice... I'm getting rady to do a spare head I just picked up. Already have the Pioneer springs... just need everything else. Thanks for putting this all together.

[franman]

thank you search button

[Liteemup39496]

please sticky thise and clear out the rest of the crap,

TY for the awesome consolidation Tom550

[franman]

WERD!

[240KA]

you just made life much easier for a lot of people. thanks!

[Liteemup39496]

ima keep bumping this so i ts on front page till someone stickies it

[Nissan_Guy_One]

I agree; STICKY this for all the random question askers. This is very good information; Thank You OP

[Liteemup39496]

TTT please sticky

[sil-coupe]

please sticky