HKS 272 or 264?

Q&A regarding engines, turbos, and intercoolers and power upgrades

HKS 272 or 264?

Postby camry90 » Sat Apr 05, 2008 11:32 am

since i couldn't get my 256, i was woundering if 272 would be an overkill for my 300whp(as close as possible) power goal on 94 pump with a GT28rs with a .86 trim?
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Postby $200GT-4 » Sat Apr 05, 2008 1:33 pm

I dunno, how high does that thing spool? How high until the exhaust housing chokes it out? You should determine what kinda power you want to make (check), decide what turbo will do it (check?), then buy only as much cam as you need to make sufficient use of it. I.E. if your turbo doesn't spool until 5k 272's would be the obvious choice as they'd rev a bit higher. But if that thing's about as snappy as s stocker 264's would likely be a better bet.
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Postby magnum » Sat Apr 05, 2008 3:54 pm

Have you thought about maybe using GSC camshafts like the S1's
Specs for GenII heads:

S1 -- Good for 300-450whp
Intake: 268 Duration 9.7mm Peak lift
Exhaust: 268 Duration 9.7mm Peak lift

Gen 2:
S1

268 9.7mm 225 @ 1 MM CL of 110

268 9.7mm 225 @ 1 MM CL of 112

I have a set coming to me that I may not be able to use.
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Postby Mafix » Sat Apr 05, 2008 3:58 pm

i would go with the smaller. that turbo isn't that big and 300 isn't too hard to do. plus the car will idle with the smaller cams much better than the 272s
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Postby RedCelicaTRD » Sat Apr 05, 2008 7:03 pm

I agree. Go with the smallest ones available.
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Postby DeeCee » Sat Apr 05, 2008 8:43 pm

check the cam test:
http://www.cj-motorsports.com/camtest.htm

I would go for the 264s over the 272s. The 264s are aggressive enough to allow you to meet your power goals while still maintaining a decent level of daily driveability.

Don't forget your adjustable gam gears as well :)
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Postby etantshi » Sat Apr 05, 2008 11:29 pm

Toda makes 256 cams. Gen III 3sge intake cams are 252, I have yet to confirm if they fit or not though.
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Postby camry90 » Sun Apr 06, 2008 12:13 am

etantshi wrote:Toda makes 256 cams. Gen III 3sge intake cams are 252, I have yet to confirm if they fit or not though.

i know but i have to wait 4-8 weeks :cry:

i might buy the 272 that's for sale on the board... cuz it's cheaper. i might check out the new cams, they have very high lift! i like
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Postby Meurz » Sun Apr 06, 2008 1:28 pm

camry90 wrote:i might buy the 272 that's for sale on the board... cuz it's cheaper.

And ending up with an engine you may not like? Strange reason if you ask me! :|
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Postby DeeCee » Mon Apr 07, 2008 1:54 am

did you even bother to read the cam test?

you have already said that you have XX dollars put into this project, so why buy something because its cheaper and convenient? Wouldn't you rather shop around and spend a tad more and get something that is better overall?

tbh, do a 20 thou overboard, run some new pistons, get new big bearings, shot peen the standard 3sgte rods and crank, do some head and manifold work, get new exhaust manifold made up, run a 3" dump no cat to 3" exhaust, run 264s with adjsutable crank pulleys, get new water pump, rebuild oil pump, install decent clutch and install new LW flywheel, balance up the whole lot, run a t06, run 800cc injectors, run an aftermarket ecu and you've got your power with driveability to go with it :)

Your goals aren't that great! No need for stroker, no need to have a hard car to drive around, no need to waste money just because it would be cool

while the engine is out, clean and detail everything as it comes off, brackets, pulleys etc. Clean up your engine bay with some simple green.

no need to send to the chromers, just a wire brush, then some sanding and buffing on a bench grinder with a polishing wheel on it will bring everything up spanky. Cover in a clear poly plastic coating and you're good to go :)

use some nice silicon hoses and/or braided hoses and colour coordinate and you're done. The braided hoses don't even have to be expensive ones, unless you are going to be running high high power!

Then you really deserve to be in your magazine with a clean car and engine bay, putting down power to the ground the intelligent way without overspending and blowing budgets :)
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Postby DeeCee » Mon Apr 07, 2008 2:00 am

oh, and don't forget to get ceramic coating on your manifolds, dumppipes and a coating on the underside of the W2A intercooler if you plan to use it..
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Postby camry90 » Mon Apr 07, 2008 3:03 am

thanks guys for your inputs. i'll have to digest all the things you say. i always wanted to build up a car of my own but this time i bite off more than i can chew in a short period of time with vendors far from me... i'll have to take a break and think this through again :cry:
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Postby Smaay » Wed Jun 11, 2008 4:56 pm

i have staggard cams, 272 intake and 264 exhaust. better for spool and support the high RPMs
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Postby $200GT-4 » Thu Jun 12, 2008 5:46 am

Seriously, 256's is as big as you need. The turbo is gonna be the one making the power, not the cams. The cams just give your engine an operating range that meshes well with where the turbo spools and where it starts choking out.
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Postby timmey » Wed Mar 04, 2009 8:44 am

I hear the st205 (Gen3 3sgte) cams will fit our Gen2 motors. Does anyone have the degree and lift specs on those, and if they do fit?

If I remember correctly, the lift is nearly 9mm, nearing the 256-264 range.

Hopefully someone actually knows what they are talking about. :)

I am considering that as a much cheaper option, although I plan to be doing 400 at the wheel..so maybe it's not enough :shrug: .

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