Good post.

 

Gotta love the social norms.
HKS has very good products, along with GSC, Buddy Club, Tomie, Piper, Jun and etc ect.
Just because "everyone" uses them should not make them the best. They aren't. BUT let me say this clearly, because on the internet what comes out usually doesn't get relayed properly, they are good product and produce the results claimed.
my 2 cents

 

The GSC cams are ground from the SAME EXACT blanks as the HKS cams, so there is no merit to any argument that the HKS cams are better by any measure. They are not inferior, but they are not better.

GSC has even used a finer polishing on the lobes of the cams which technically leads to less friction, essentially allowing for a marginal increase in power over the HKS units.

Greg/GSC has offered what can essentially be described as a lifetime warranty on his cams and has even replaced units with nothing more than surface blemishes on them free of charge. Aside from those few issolated incidents, there have been no other problems with the GSC cams.

You can't beat it for the price.

to GSC!

 

Go hks time tested...

 

to produce less power. Go GSC and you'll be thankful that you did.

More power + less money + better customer service = GSC winning combination!

 

[QUOTE=primo8998]

Quote:
Originally Posted by Zeus
timzcat ,

I've been waiting for a "respected individual" in this community to try these out. I think once people realize there is more power in the Revolvers with real tuning, they will catch on. Problem is that many tuners who tried them were confined to the tuning mentality of the HKS cam... you can't do that. It is a different animal compared to what many US tuners are accustomed to.


Precision Dyno gave the short answer, and I don't have time for the long... but suffice to say, you can't stick to an HKS cam flash template and expect to tune these properly. So if Joe Bob Evo owner signs up for an hour time slot with his high lift, shorter duration cams, the tuner is less likely to be able to do the setup justice in that short time frame. Esp. since most tune dates, etc, include setup in your "hour tune". Don't get me wrong, I am friends with companies who do this. I would do the same for 90% of the setups out there. However, when you throw a substantially different tuning variable in there (such as this type of cam, and not just Revolver), you have unreasonable expectations for what you have to work with. In the end, the customer is unsatisfied with a phenomenal product with a mediocre, or incorrect tune...


PS, next time, please read between the lines before you attempt to make someone look like a jackass.

 

I don't want to get sucked into a long debate that turns into namecalling etc like many of the other threads, but there was a big point on the service button. HKS service is near non-existent, however it is basically a non wear item and should not require a warranty claim etc. GSC has some of the best service in the industry if you needed it however. I am not going to continue to take this OT from the HKS vs. GSC any further. That was the thread topic.

 

Let me replace the nouns here with something else so you can see how silly this is...

(Imagine a time somewhere in the 1600's)

Screw democracy (GSC, Tomei, Revolver), a monarchy (HKS) is a time tested system that works.

 

I got GSC and Im loving it...

 

Ok, well I did not intend to spark this issue, but thanks to Timzcat and the other respected posters for the responses. Cams will likely be my next upgrade. I do not install *any* part because it is the accepted norm. I question everything...that is why we have brains.

So...I have been looking at all of these "other" cam choices, and until now could not figure out why they are all listing lower durations than HKS. Coming from a domestic background, I do not care so much for "advertised" duration but instead the @50 number (now some metric equivalent). Thanks to Timzcat, I now see what's happening. I need real objective data on lift and the area under the profile.

Thanks all...now it's back to researching for me

 

To the original poster... sorry, I should not have spouted off in your thread about something you did not ask about. My sincere appologies...

Back on topic:

In reality, you may not notice a huge difference in power between these two. Esp. if your tuner is not really wringing them out for you. However, as TTP Engineering posted, it appears to be very obvious which company is going give you the most support. Sometimes, that in and of itself, is worth more than a few whp on the dyno alone.

 

So what is the final ingrediant to the GSC cams that result in increased power over the HKS cams? ramp rate, overlap...etc In some japanese engine circles, the exhaust side is paid more attention to because of decreased flow rates from the the cyl. head...as is the case with the allmighty (grin) 2jz head. Has GSC taped into this for more power?

 

GSC uses a micro polishing on the cam lobes that is much finer than the polishing used on the HKS cams.

This smoother finish results in less friction theoretically allowing for the increase in power.

All other aspects of the cams, however, are virtually identical to the HKS units.

 

can any wild *** guess gains with the GSC vs HKS..given similar vehicle setup?

 

That's really impossible to determine given the infinite amount of variables to be considered for testing.

Same car?
Same day?
What modifications?
What kind of tuning?
What altitude above sea level?
What kind of fuel?
What kind of dyno?
What kind of load?
Etc.

The performance figures would be very similar, possibly with GSC having a slight edge (a couple HP and TQ points throughout the band) based on other tests done in the past.