284 cam too much for a 2.5L M20?

[2mAn]

I have the opportunity to pick up a freshly reground 284 cam for a good price and am wondering if this, along with 19# injectors and a reflash is too much cam for an otherwise stock M20? Eventually I want to build it into a 10:1 2.8L and I know at that point it will be great, but that might be a little ways down the road.

[E30arsen]

I think it will be too big. Because I've heard from people that anything Over 274 is overkill. But you should be fine running it for now. Just be carful because I've read some people having issues of valve hitting pistons with a 288 cam. Not sure if you might have the same issue with a 284.


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[digger]

If s good price get it and keep it for a rainy day

[ForcedFirebird]

It will work, but it will be lazy in the lower RPM's.

[apostate]

With regrinds it is always a lottery, you don't know actually what you get.
Unless you can measure it up (or have someone do it for you) you are shooting in the dark.

[ForcedFirebird]

With regrinds it is always a lottery, you don't know actually what you get.
Unless you can measure it up (or have someone do it for you) you are shooting in the dark.

Every cam I have sent in for a regrind came back with a cam card. I haven't seen any BMW re-sellers provide this info for some reason, though.

[2mAn]

The place seems legit

http://schneidercams.com/

Full disclosure. Im buying a 304 cam that will go to them to get reground

[apostate]

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[ForcedFirebird]

Not worth it for a couple of bucks less.
Even if it comes with a cam card, you would have to trust it without any other proof. I wouldn't.
Get the real Schrick 284 instead.

So because the cam is ground, then measured, you don't trust the measurements? What's the logic?

[digger]

If it's s no name regrind then probably would need to be very very cheap to consider

[digger]

So because the cam is ground, then measured, you don't trust the measurements? What's the logic?

In all fairness I dont trust camcards unless it comes from schrick but their grinds are not modern. I dont think most companies put the cam in a head and measure the output for quality validation . Most of them don't seem to know the transfer function to get from cam to valve is profile dependant due to variable tocker ratio

[ForcedFirebird]

In all fairness I dont trust camcards unless it comes from schrick but their grinds are not modern. I dont think most companies put the cam in a head and measure the output for quality validation . Most of them don't seem to know the transfer function to get from cam to valve is profile dependant due to variable tocker ratio

Moot point when they give lobe lift, lobe separation, duration at .005"/.050"/.020", open/close at BTDC/BTDC, LSA. Only thing missing is installed angle (ICL) which is really up to the installer (even conventional domestics have ump-teen rocker ratios).

Doesn't take much to verify with a degree wheel, v-blocks, and dial indicator in the end.

I agree, though, cam grinders will just do as close to what you ask as they can based on the core, then re-treat them. I have sent identical stock cams in and got back two different grinds due to wear (hydraulic flat tappet pushrod cams).

[apostate]

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[2mAn]

so if its not a Shrick cam, its not worth it? haha

[apostate]

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