You must check your clearances on ANY cam install. Anyone that would just "drop in" a set cams with out checking clearances is asking for trouble. I have installed more them my fair share of cams into a 2J and every set I did needed atleast some shimming to obtain the proper clearances. It is not likely that every valve will require a new shim but the likelyhood of having them all spec out is pretty low in my opinion.

As fas as the difference between the two I really do not know, I am in the proccess of installing some BC 272's in my head and I could not obtain proper clearances (not the cams issue). I had to send the head and the cams back down to the shop that I am working with so they can have there machine shop set the clearances since I am not able to get the proper clearance with the currently available shims.

Bob

 

Thanks Bob. I have just never opened up an engine before, and I was hoping for the so-called "drop in" cams so it'll be easier to do. I actually just ordered this Engine repair/rebuild book used in ASE Auto Mechanic classes from Amazon just to learn more about it before doing anything. Being stupid is the last thing on my mind.

As for the BC vs C:

BC cams duration @ .050 is 220*/226, while Crowers are @ 218/218.

HKS 264's sound good, but are almost 40% more expensive...

 

I installed HKS 272's back in the day without having to re-shim anything... Sometimes its hit or miss. But the point is to never assume its "good-to-go".

 

on the account of customer service, bc Ftw. see my sig.

 

OH....

Thanks. BC it is!

 

Wow, I didnt know you had to shim with cams. I dropped 280/272 cams in my Evo like factory. Never heard of this before. Interesting.

 

Brian Crower and Crower is the same family. Brian Crower is just a division of Crower.


EDIT:

First thing that popped up on Google....

http://www.briancrower.com/about.shtml

"Brian Crower grew up at Crower Cams & Equipment Company, where he headed up the Crower Sport Compact division since its inception. With Crower Cams heavily focused on the V8 market, Brian saw an opportunity to truly support the needs of the Sport Compact community. With the support of his family, Brian Crower Inc. was formed to deliver the highest quality internal engine components for a variety of popular engine platforms."

 

Good info. I was always thought it was a little far-fetched to have 2 Crowers in the cam world ha.

 

If you are in the market for cams I would take a look at GC and Titan cams for our cars..

 

I was looking for non-interference cams. Plus with my pte67, I think a 264 is a good match.

 

My HKS 264 cams also didn't require shimming. All clearances checked out within spec.

Steve

 

As always with HKS cams! If you need to re-shim after installing HKS cams, then the cams you removed were also out of spec.

Al

 

I'd suggest finding the toyota manuals, it tells you step by step with pics so you can get an idea on what your going to need to do. Shimming is easy just time consuming.

Oh, don't forget to do valve stem seals since you're doing everything else.

 

I actually have the manuals (in pdf). I have to read it over. I also have that ASE mechanic engine repair book coming in a couple of days!

 

I went with Brian Crower springs and retainers to go with my HKS 264 CAMS.

 

Sorry to hijack here, but if you get springs/retainers done at the same time as cams.. do you have to 'shim'? What exactly is 'shimming'?

 

here is a good pic of a bucket with the shim on it...

diagram showing on top of the bucket shim,and under bucket shim

good write up on how to do it (not on a supra,but you get the idea)

http://zoubiando.com/valveshim.htm

 

From what I was told, Brian is the son who got more into the 'tuner' aspect of the aftermarket world after a falling out with his father. Chris.

 

HKS cams for evo's are drop in and go. Bleeding lifters is a very good idea for the higher lift and duration. About the only time you really need any "shimming" is if you switch to a solid lifter. This being in an evo. Valve springs and ret. are a very good idea also. Oh yes BC cams for evos BLOW, they are about the worst you could put in.

 

Well, if they suck for the Evo, it may more than likely transfer over to the Supras too. Looks like I may as well find some HKS cams just for the peace of mind.

 

^^Don't take what I said about them sucking for evos as fact for the supra. They seem to do well in a supra for whatever reasion. In the years that I have been poking around here I have read that BC's work well in the 2jz. I would guess that it might be from the company having more time with it than the evo engine.
On a related note to not make that jump..HKS parts for evo are good but suck on the subie.

 

This isn't evo forums and you can't relate parts between the two. Supras don't even have lifters.

 

^ what part of it?