I was considering ordering the gsc s1 cams for my almost stock ix mr. Then my buddy who has an sti said don't cams kill your engine. ? is this true. I doubted him but im not really sure. Anyone have any input?

 

dont listen to him...

 

only if it dosent get tuned it will

 

Curious too?

 

Just putting upgraded cams in your engine will not kill it, not properly compensating for the additional lift/duration and the air that it will allow into your combustion chambers could damage your engine. There are several good cams that will idle like stock, provide a noticeable horsepower increase, and not cause any damage. The GSC S1's that you are considering are excellent cams and would only require a retune.

Josh

 

If you're going to do the cams yourself, make sure you read ALL of the 'Cam Installation' stickies at the top of the page first.

 

If your getting cams make sure you do research on what you want your car to run like at the end of your build. Some guys get cams and no spring, retainers then they want to do it later, more work for them. You will need to get it tuned when you put them in cause it can ruin your engine.

Best advise I can give is get the ones YOU want not the ones that guys just give a brand and no reason why they picked it. As for your friend hes right to a point but wrong on choice of cars.

 

Lmao... +1 4 life b1tches

 

diy cam install hard?

 

Not really that hard just make sure you have read all the tips and tricks before you start.

here is a nice video guide:
https://www.evolutionm.net/forums/ne...eply&p=6841755

Here is a nice cam comparison:
https://www.evolutionm.net/forums/ev...-cam-test.html

also keep in mind there have recently been some cam failuers with the Evo 9's from certain manufturers.

https://www.evolutionm.net/forums/ev...m-snapped.html

 

thanks alot, and I want a power increase and a raw off beat idle haha I love that sound. Any recomendations on cams? IM running stock turbo most likly for another year or two so... can I put hks 272's in? I dont know if the diferent sizes have to do with bigger turbos cause that is what I read on the gsc website.

 

For a stock sized turbo, 264's or 272's would be your best bet. 264 woudl give you a nice quick spooling swift kick in the *** of torque for around town hooliganism and the 272's would keep the low end close to stock and push the midrage and high end up a bit.

Now to get the "blat blat" sound you seem to be looking for you need to go for a cam that has more valve overlap. 280 cams tend to be this way because they have the overlap specced into to give heavy power at the top end. THe problem is though, with a stock turbo you won't have enough puff to take advantage of these cams which are more designed for better top end of bigger (GT30 size at least turbos).

And just FYI, the "blat blat" sounds is a byproduct of intake reversion due to valve overlap. This means that the intake and exhaust valves are both open at the same time during the intake stroke. In the process at low engine speeds when the intake flow is slow (idle!) sometimes you get a bit of exhaust flowing back into the intake manifold. This causes the engine to have that lumpy unstable idle. The poor combustion also makes the car car easier to stall at really low revs.

The benefit of valve overlap is that at high rpm the massive flow of intake air has plenty of momentum pushing it through the intake, and during that period of valve overlap, the intake charge actually pushes the burnt gasses out of the cylinder (this is called scavenging). This makes for very nice (read more power) combustion at high engine speeds. Look at the dyno charts for 280 cams. They all sacrifice low end to build up big high end, the 272s are in the middle, and the 264s are build the low end.

 

oh yea also in terms of specific cams, some of the top names these days are Kelford, Cosworth, Forced Performance, GSC, HKS.

Unfortunatley Kelford/Cosworth/GSC have been having some failure issues lately with Evo 9 Mivec cams. So far (crosss fingers) these issues haven't shown up on FP cams or HKS cams, so to be safe, I would recommend either of those... And given you liking for off beat idle, I would lean towards the FP 4R's, the HKS's are a little less aggressive and have a smoother more stock like idle.

One thing to note though, when you go for higher lift cams (anything 272 and above is usually higher lift). You MUST replace your valvetrain with stronger upgraded valve springs and retainers. People try to skimp on these things, but what that will do, is end up floating valves and slamming them against valve seats, breaking things and damaging your head or worse in the long run. Do it right the first time and save money and hassle later. If you are putting in anything 272 and above, upgrade you springs and retainers.

U will also need a good tune to get the benefit of any new cam. Tune is key!

 

Food for thought, the cams issues are only occuring on gsc 2 cams. i haven't seen anything on gsc 1's yet!

 

Dear lord someone please close this thread I was such an idiot when I made this hahaha.