cam question

[Bullhead]

Exactly my point, it all depends on what he wants to do with the car and how often he wants to fill up.

I agree, and sometimes a little bump in duration and lift can give you what your looking for without a ton of other things you don't really have to have but would like too.

[BLACKCHARM88]

Andy is running one and he says it is very friendly, I believe he has a sssquid chip in there too.

Exactly my point, it all depends on what he wants to do with the car and how often he wants to fill up.

[Bullhead]

I have heard the 272 is one of the best duration cams out there and is still pretty road friendly.

Andy is running one and he says it is very friendly, I believe he has a sssquid chip in there too.

[BLACKCHARM88]

I have heard the 272 is one of the best duration cams out there and is still pretty road friendly.

[Bullhead]

Me and Digger were saying the stock I springs are good stuff. But buy some good one's don't get knock offs. Here are some good I springs http://www.bavauto.com/shop.asp?HC1=...=1989&HCM=325i if you want to go with Cats version more power to yah but I don't think you would need them.

[zesinlijn]

I allready ordered some HD rockers because i didn't trust the old ones anymore and they're not that much more expensive than stock rockers.. so if i'm planning to use the catcams i need to put in stronger valvesprings? the company where i ordered the rockers also sell catcams valvesprings but they are not cheap. if i put in the catcams i'm thinking i also need a chip that raises the Revlimiter to use the topend power? how many hp can i gain with this setup?
If i put the original camshaft back in is it ok to just leave the old springs?

still not sure what i'm going to do..

[Bullhead]

new stock springs are pretty good even for a mild cam. At some point you do need to upgrade

Roger that Digger, I meant "cheap" springs sorry about that.

[digger]

new stock springs are pretty good even for a mild cam. At some point you do need to upgrade

[Bullhead]

If you are willing to give up the low end power for peak power then go for it. But absolutely check clearances. I would also recommend HD rockers. There are a lot of threads about busted rocker arms and cam upgrades.

^ And don't forget good springs, for some reason people spend big $ on a head and put stock springs back on them.

[603Racing]

If you are willing to give up the low end power for peak power then go for it. But absolutely check clearances. I would also recommend HD rockers. There are a lot of threads about busted rocker arms and cam upgrades.

[digger]

The 285/285 is very popular with the UK guys running with stroker 2.7 and 2.8L but I personally I wouldn’t run a 285/285 catcams on a stock bottom B25 id be looking at a schrick 272 as it seems a better tradeoff.

From what I have seen the catcams 285/285 camshafts tend to lose more low end torque than do schrick of similar advertised duration (284/272) but they also seem to make more top end and midrange power than schricks trading bottom end and topend. This might not be so bad for a track car.

[Bullhead]

Here is a good article on checking p t v clearance. http://www.enginelabs.com/engine-tec...lve-clearance/
Here is some plastigage, you can also use it and scoop it up at any decent auto parts store. http://www.autozone.com/autozone/acc...igage/_/N-25xn

[zesinlijn]

The e30 is not my daily driver. Just did a full restoration that took about 8 months and i'm planning to use it as a weekend fun car and taking it to the nurburgring from time to time. So losing a bit off torque down low and some street drive abilty doesn't concern me. I allready have this cam in my possession because i had the chance to pick it up for cheap. But after some searching on the web i'm not sure if im gonna install it.. Read a lot of contrary statements about fitting such a hot cam on a stock engine..

[SkiFree]

Yes, claying is a good method.

I personally wouldn't use that aggressive of a cam, you'd be losing a fair amount of bottom end in favor of a peakier top end (not fun for around town). I'd say a 272 or even a 284/272 would be nice (but in conjunction with a proper chip and new rockers).

There's a lot of pertinent information on this if you use the search function.

[Northern]

Just remember that schrick recommends their uprated valve springs with the 288, so there's some more money to spend to fit this.

By itself, I wouldn't expect much difference with just the cam/springs on an otherwise stock motor.