Camshaft opinions...

[ctrench]

ok so im looking at some cams, but im not sure exactly how to pick the right cam, im getting MS in the mail in the next week or so, and after that i want a cam for the car. i currently have a ported/rebuilt head, and it was decked .010" over so i have a little higher compression and a little better air flow, and after the cam i plan on fabbing up some gsxr itbs, so i want a halfway aggressive cam...

lol, so who has opinions on picking a cam??
im thinking (256/9mm) for both in and ex
or what about 272* duration?

[ctrench]

anyone?

[jux]

As far as aftermarket profiles go, those two are what I see the most frequently.

You could always call the manufacturer and ask. They tend to know what'll work best. Just be prepared to state your goals for the engine.

[Jayson]

HKS cams 256 here ;)

http://www.youtube.com/watch?v=mKMK09Zc3jc

[ctrench]

yeah thats nice, but would the 256* be good for itbs and my ported head?

[maharaj]

I would call Crane Cams. You can tell them your exact setup and what you want the motor to do. You'd be surprised by the price of having them custom grind a cam as opposed to buying a new one off of the shelf. In addition to that you get one that will do exactly what you want.

[ctrench]

so your saying getting one off the shelf would be more expensive?

[Jayson]

Maybe more than you think :)


http://www.youtube.com/watch?v=DcqfYaftL1I

ITB kit
TOMEI 256 CAM

[ctrench]

at first i was like "this video sucks" then at 1:49... shit got real!!!

ok, i want to get my itbs together asap!!!

[Impuls]

Oh gerd. That was sexy.
I want to go with Maruha cams.

[maharaj]

so your saying getting one off the shelf would be more expensive?

Not actually. There is a big misconception that custom cams are more expensive. When it comes down to it the prices are usually pretty close AND with a custom grind you are able to get something specific to your setup.

[ctrench]

hmmmm cool, im thinking of doing a custom ex to in cam swap, by getting the cas gear professionaly welded to the ex cam and just swap that in...

[bokehmon]

^it's been done a million times. it's called the "exhintake", and you cut off the exhaust cam CAS drive... not weld it to... whatever you're thinking of.

[Impuls]

I was sure they just took the ex from the newer motors and put it the in.. no cutting or welding?

[ctrench]

i have a 1.6, cas is on the intake cam, so i would need to put the cas drive onto the exhaust cam, hence why i would be welding... ive done plenty of research

[Impuls]

1.6
Ahh there's your problem!

[ctrench]

lol dont hate!!

[maharaj]

Ahh there's your problem!

:toomuch: I agree!

[Freaky Roadster]

On a 1.6 you could always dump the CAS for a crank trigger set up (+MS)

[bokehmon]

i have a 1.6, cas is on the intake cam, so i would need to put the cas drive onto the exhaust cam, hence why i would be welding... ive done plenty of research

http://3.bp.blogspot.com/-qH1RLECre7w/T5kZKXn2OAI/AAAAAAAAAUQ/L7xaKBMZhWc/s1600/jackie-chan-wtf.png

[mrpham]

The person that did your porting, did they get it onto a flow bench? This would be the best way to see what cam profiles would suit the head best. I also have a 1.6L, extensively ported with oversized valves. My camshaft was chosen by the guy that's porting my head, ended up being 283deg with 9.5mm lift. Depending on how much lift you decide on, you'll need stronger valve springs.


Check my build thread in my sig, also doing ITBs. I am also using the '00 style cam and crank sensors to replace the rear CAS.