So say I wanted a cam for my m20

[Danny]

Schrick 288 or 284?

DD some track duty, running on megasquirt.

What would you say?

[Aptyp]

284 idles better and low end torque stays the same. Had really hard time getting idle right with 280 and 288.


I still have 280 laying around garage, Schrick hasn't made that one in almost 20 years for a good reason.

[Danny]

284 idles better and low end torque stays the same. Had really hard time getting idle right with 280 and 288.


I still have 280 laying around garage, Schrick hasn't made that one in almost 20 years for a good reason.

I think I might go for a 284. Although I love the sound of James' 288.

[der affe]

292 and get ITB's and at least 28lb/hr injectors
be like me. the smog popo will really love you then

[Danny]

Lulzzzzzzzzz

Its gotta LOOK stock.

[der affe]

pretend it is a benz or audi and make an engine cover;)
they will never know.

or tell them it is an S-14 or an S-52. they both have ITB's

[James Crivellone]

Don't run anything over a 284 with stock pistons without an adjustable cam gear, the clearence is way too tight and you will have valve/piston contact depending on how much you have milled the head.

On a perfectly stock motor that has never had the head pulled MAYBE, but I would not risk it. I've seen 3 blown up M20's running a 284/272 with a stock bottom end (including mine)

[Danny]

Damn. M50 is looking better and better.

[Dyno4mance]

Nooo Schrick 288 all the way....revs like a sport bike:giggle::nice::mrgreen:

http://www.youtube.com/watch?v=Y6c368FiheY&feature=related

http://www.youtube.com/watch?v=oCzO_bIs00k

[Knockenwelle]

288 FTW. Sure, you lose a little torque below 2500, but if you're considering a cam, you're gonna drive it like you mean it. My 2.5 with a 288 revs happily to 7400, though I usually shift around 6900. An adjustable cam gear is definitely a requirement, as is VERY careful checking of P to V clearance.

And the sound!!! Gives me chills every time I wind it up.

Technical note: the 288 is a single pattern, with 288 degrees of advertised duration on both lobes, and a 110-deg LSA. The 284 is a dual-pattern, and has 284 deg intake duration, but only 272 deg on the exhaust, with a 110 deg LSA. Though the numbers may suggest otherwise, there is a BIG difference in cam "size" with the 288's longer exhaust duration. Not surprisingly, the 288 has a lot more overlap, and you will notice/hear/have to deal with it at idle. I've had some sorta-car-guy types ask me if I had a small-block in my car. Duuhhhh.....

[nando]

you aren't going to want a 288 with the 8.8:1 cr of a stock M20.

stick with the 284/272. it will idle fine, make plenty of power in the upper RPM range, and you can get away with using it with motronic and a chip. the 288 is quite a bit more aggressive and you're really just wasting most of it's potential on a stock motor.