272 cam in stock engine, advisable?

[cultus]

Hi, was wondering whether anyone has any experience or seen the result of putting a pair of HKS 272 cams into a STOCK gen3 1GGTE? ( with no adjustable pulley )

Initial plan : got a Blitz single turbo manifold and a pair of NA cams that are "adjustable" by shifting the pins. Thinking of maybe using RB20 or SR20 turbo.

But new job is taking up my weekends. So the engine is still stock and the parts are sitting in the store room.

These cams are very very rare in Malaysia. Too hard to resist at a reasonable price.

Any info is greatly appreciated. Thank you

[twentyEight]

Hi, was wondering whether anyone has any experience or seen the result of putting a pair of HKS 272 cams into a STOCK gen3 1GGTE? ( with no adjustable pulley )

Initial plan : got a Blitz single turbo manifold and a pair of NA cams that are "adjustable" by shifting the pins. Thinking of maybe using RB20 or SR20 turbo.

But new job is taking up my weekends. So the engine is still stock and the parts are sitting in the store room.

These cams are very very rare in Malaysia. Too hard to resist at a reasonable price.

Any info is greatly appreciated. Thank you

Do you mean stock internals?

The 1G-GTE internals are quite good, and I'm trying to understand where your hesitation is, because I can't see anything wrong with what your thinking of doing...

[Koffee-Black]

im thinking the valves/retainers will need to be upgraded.

[psychofox]

A 272 degree cam is very big for a Forced induction application - you will be almost unable to run them with a stock computer. Also without adjustable cam gears you will be unable to "dial" the cam to the correct lobe centre positions to get the best out of it. The powerband will be significantly shifted to the upper end of the rev range, and will be very sluggish off boost. I would go down the turbo upgrade path and install the cams later when you want big HP.

[oldcorollas]

272 is a good street NA cam...

it depend show many revs you want to go to, and how much low wend you want to sacrifice..

have a look at other people with turbo motors and 272's and see if that power band is suitable for you.

[cultus]

Thank you for your inputs. I was thinking it might be idling rough as well and will be better if match with a ball bearing turbo that spools faster for some lower end power.

A fuel pressure regulator is in the planning as well. I have gone ahead and bought the cams coz cant live with myself if I pass, they are rare. I had sat in an evo5 with 272 before, idling was rough, boost kicks in around 3500rpm which was nice, he has an SAFC2 on board, no adjustable pulley.

Agree with Oldcorollas that it is a good NA cam.

Here's some pics of the cams:



Above : HKS on the top


Above & Bottom : NA on the right. The cam pulley pin has some free play for the NA cams.

[gianttomato]

I'd grab them if for no other reason than they are rare and a good deal.

I used to run a 276 degree cam on the street in an NA car. The idle was only slightly lumpy. Very subtle.

As for fitting them to your 1GGTE, the main thing you need to establish is whether the standard valve springs are up to the task. I don't know much about 1GGTE internals, but what you need to know is at what amount of lift will the 1GGTE valve spring coil bind? If 8.1mm is the standard amt of lift then you should be OK. If you plan to be running more rpm, you may need stiffer valve springs for better valve control (no float) - again, best to speak to people who have played with them a lot.

Of course, if you are running the standard ECU and turbos, you may not see the full benefit of running such a cam.

[ViPeR_NiPPleX]

you have bought the cams, might asell put em to good use I reccon

although as gianttomaddah has said, if the motor is stock, there isn't much point.

[1jzracing]

all you will need to have LOTS of fun with them is a bigger turbo and I/C

forget the springs they will be perfectly up to the task as at higher lift there is increased compressed force .... thats untill you try to get 9000 rpm. by then you will be needing a lot more than springs to hold it together.

adjustable pullies in my experience are all just a big gimmik of monkey see monkey do.
ive never heard of anyone gaining more that a few Kw with them, I tried some on my 1j we got a 6kw gain .... wooopie!! then sold them went back to stock ones and made an 80kw gain with other basic upgrades .... like cams
i still run std valve springs

[75Ta22LT]

I dunno man, "pay now or pay more later" I think the phrase is....

If you do get new valve springs, make sure they are genuine parts.

I've heard bad stories about dodgy drivetrain components....