[TooJayZee]

I searched but got the white screen of death.
Im in the market for cams for my JDM engine build. Im wondering, at what point would it benifit me to run HKS 264's over the stock USDM cams ? (I have JDM cams now)

 

[360rwkw]

I changed from the US cams to the HKS 264 cams and gained 50 rwhp.

 

[TooJayZee]

I changed from the US cams to the HKS 264 cams and gained 50 rwhp.

What size turbo and boost level are you running.

Thx

 

[Stu Hagen]

I gained like maybe 15hp, all at the top end. This was with stock twins, and at 20psi. Anyone claiming 50+ most likely are running a single.

 

[360rwkw]

What size turbo and boost level are you running.

Thx

That was with a Greddy T78 and 22 psi boost.

 

[TooJayZee]

Im going single. Havent decided between a 61 or 67. I like the kick in the low end but im not sure I'll be able to plant it anyway.
So im just wondering if the cams would be worth it for 20-22psi on the 67 ?

 

[Stringer Bell]

Stock USDM cams are 256, so 264 is definitely a power upgrade. Gain will depend on boost, turbo size, and supporting mods.

 

[Alex D]

Stock USDM cams are 256, so 264 is definitely a power upgrade. Gain will depend on boost, turbo size, and supporting mods.

If you do not honestly know what the USDM cams are, please don't give out false information. If the factory cams were 256, why would HKS even bother offering 256 cams as a upgrade to the factory. The factory camshafts have a advertised duration of below 240.

 

[Stu Hagen]

http://www.moreboost.org/cams.htm (credit Steve's website for this info)

As you can see the OEM USDM cams are 233/236 and JDM are 224/236.

So ya, these are the facts. The "offset" on the USDM isnt worth doing it this way as an upgrade (264/272), specially on stock twins, or with stock head/IM, IMO

 

[TooJayZee]

http://www.moreboost.org/cams.htm (credit Steve's website for this info)

As you can see the OEM USDM cams are 233/236 and JDM are 224/236.

So ya, these are the facts. The "offset" on the USDM isnt worth doing it this way as an upgrade (264/272), specially on stock twins, or with stock head/IM, IMO

Stu, what do you mean by offset ?

 

[Stringer Bell]

If you do not honestly know what the USDM cams are, please don't give out false information. If the factory cams were 256, why would HKS even bother offering 256 cams as a upgrade to the factory. The factory camshafts have a advertised duration of below 240.

My bad, for some reason I was under the impression that stock cams were 256, guess not.

 

[Alex D]

Stu, what do you mean by offset ?

The duration of the camshaft is what i'm assuming Steve meant.

 

[MissSupra]

61 = Insta-spool technology (invest in good tires) :beer:

 

[Phil NZ]

I think it is well worth going to 264's with any Turbo over a 61mm especially if you have J-spec to start with and they will give you between 40-70hp increase depending on what boost level you are running. More importantly with the J-spec cams you get a noticable flattening off of power at about 6000rpm's with mid sized turbos (from my personal experience anyway i.e T66 ect) where as the 264's keep on pulling and pulling. When reving to 7500rpm with the 264's the car is incomparable power/performance wise to reving to 7000rpm with the OEM J-spec cams. I am sure they will offer even a bigger gain now with the T72. Phil.

 

[drift tt 23]

i got a set of us cams 4 sale if you want...pm me. cheap.

 

[Phil NZ]

This is exactly why many J-spec guys install US-spec cams, cheap option for a little more power and is a good idea if you are not chasing big numbers (500ish) and sticking with OEM ECU and small to mid size turbo ect. .

i got a set of us cams 4 sale if you want...pm me. cheap.

 

[cassio]

to the top, just read this good info.... what is needed to actually equip the JDM head with the USDM cams?

thanks in advance

-ian

 

[MadMaxx]

to the top, just read this good info.... what is needed to actually equip the JDM head with the USDM cams?

thanks in advance

-ian

Nothing special required to install in a JDM motor. Just swap them in.

 

[alwayzspeedin]

so i have a aristo vvt-i motor the only cam i can swap with a usdm is the exhaust side right..because i want to keep the vvt-i

now if this is true do i also need the cam gear or can i just order the cam only ..thanx

 

[360rwkw]

The JDM exhaust cam is virtually identical to the US exhaust cam so no point swopping them.