ok after a hour of searching i give up...
i've got 3 questions,
Will the beta 2 heads swap on the beta 1 block?
95% sure was the best anwser i found
Will the solid adjusters work in the old style
cylinder head instead of swapping the whole head
(might be better with the newer cams)
and last,is there a way to indentify newer cams
from the old ones without measuring them? casting numbers,part number stamped on them?

Thanks,
Denis

 

why ya swapping heads?

Nothing wrong with HLAs.

With SHIMS you now have to get the thims adjusted from time to time.

Might I add sr20det has HLAs? BETA just not gonan REV high if thats your reasoning. oh well, I will wait and see why you wanna swpa heads.

 

You cannot rev the beta high because of our long stroke, and because of the HLA's. Removing the HLA's is only PART of the problem. The long stroke of the motor just does not lend itself to high (7500+) RPM. The motor just cannot handle the stress.

The loads generated by piston/conrod/crank movement are proportional to the RPM of the engine, squared. For example, if engine speed is increased threefold, the interial load will be NINE TIMES as great. The difference between just 6000 and 7200 RPM is 144% MORE LOAD.

You need to have a darn good reason to want to increase the RPM.

Getting back to your original question. I should know the answer to this in about 2-3 weeks, as I have one example of each motor in my garage right now, and the teardowns will begin shortly. I will be able to compare the two and see if they do bolt up. You cannot swap out the valve train without swapping out the head.

 

The idea for the head swap is simple,get one head ported while the stock one is still on the car and do the job on a weekend
Instead of just purshasing a intake cam i could get a sweet deal on a used beta 2 head

for the lifter swap,i just wanted to use the lifters wich are made for the cam,if they have the same bore size and lenght they should fit

any tips on the cam identification?a local rebuilder has a stack of cam,might be easier with some kind of marking to tell them appart

Denis

 

The lift/ramp up should be significantly different on the HLA cams vs the shim cams.

The because of the HLA's inherent *squish* factor, HLA cams must open much farther and faster than the Shim design.

If you look at the specs I posted for the RPW cams, compare the HLA cams to the Shim cams and you should get the idea.

In regards to the marking or stamping on them, I won't know untill I start to rip the motors apart.