crower stage 2 turbo cam on n/a

[kit88]

Hi guys,

I have a d15b7/y8 mini me ,
I got a crower stage 2 turbo cam from a friend.
Can I use this without problems on my engine???

[nation of kong]

what exactly do you mean by problems? if you throw it in you'll probably want to upgrade your valve springs and retainers (I know Crower recommends its) and then get it tuned. But the question would be why would you run a Turbo cam on an NA car? If your going turbo eventually just wait till then to install it.

[kit88]

I mean problems with the idle or timing,

[88cr-rex]

I don't think it matters because all of crower's are intake bias . . . which doesn't make a whole lot of sense given the intake side is much better than the exhaust when stock.

[kit88]

I don't think it matters because all of crower's are intake bias . . . which doesn't make a whole lot of sense given the intake side is much better than the exhaust when stock.

I don´t understand

[dragman99]

with extra compression from your mini me, you may run into some detonation issues if you run a lot of timing. the overlap on a turbo cam isn't like an n/a cam.

[88cr-rex]

It appears that crower grinds their cams with more intake duration than exhaust. I am still not sure exactly why anyone would do this as it is a generally new idea in the history of racing (became popular in the 80s). As technology created better heads, the idea was that since the exhaust is hotter and therefore is going to move faster (higher pressure), it doesn't need as much time as the intake does because it is only being drawn into the chamber.

However, when looking at a honda head (and sorry I haven't personally inspected a vtec head, just pictures from the internet) the intake is very well cast from the factory, much more so than the exhaust. Which is why I have a hard time believing the intake needs more duration than the exhaust. Now when ported, the intake has little gain (I only picked up ~28 cfm at max lift, roughly .500") but the exhaust picks up a lot given the throat is so small (a6/b2 possibly other non-vtec heads) and there is a lip around the seat in the chamber.

I personally think intake bias is hype (never seen one work better than a properly spec'd dual-pattern favoring the exhaust) but with forced induction all you have to do is turn up the boost. :D

So do what you want, like I said the cams aren't going to make any significant difference unless the valve timing events are very different.

[kit88]

It appears that crower grinds their cams with more intake duration than exhaust. I am still not sure exactly why anyone would do this as it is a generally new idea in the history of racing (became popular in the 80s). As technology created better heads, the idea was that since the exhaust is hotter and therefore is going to move faster (higher pressure), it doesn't need as much time as the intake does because it is only being drawn into the chamber.

However, when looking at a honda head (and sorry I haven't personally inspected a vtec head, just pictures from the internet) the intake is very well cast from the factory, much more so than the exhaust. Which is why I have a hard time believing the intake needs more duration than the exhaust. Now when ported, the intake has little gain (I only picked up ~28 cfm at max lift, roughly .500") but the exhaust picks up a lot given the throat is so small (a6/b2 possibly other non-vtec heads) and there is a lip around the seat in the chamber.

I personally think intake bias is hype (never seen one work better than a properly spec'd dual-pattern favoring the exhaust) but with forced induction all you have to do is turn up the boost. :D

So do what you want, like I said the cams aren't going to make any significant difference unless the valve timing events are very different.


Then, I can use this cam without problems rigth ??

Sorry for the question again but I´m new on this.

My idea is to get some extra hp´s with the cam, but without affecting driveability, or having to get a new tunning

[dragman99]

Then, I can use this cam without problems rigth ??

Sorry for the question again but I´m new on this.

My idea is to get some extra hp´s with the cam, but without affecting driveability, or having to get a new tunning

you'll need tuning.

[kit88]

Thanks guys