hey, i had high comp ycp pro3 but broke it. Now i want try pro2 on stock block, the question is what cam degree min. should be for non hit the oem pistons? i dont have tools for measurement

When it ends the set up with 10:1 cr 91 oct, post here the results

 

I'm afraid no one is going to do that. Those camshafts were made specifically for higher compression of at least 11.8:1 and up. No one puts that high of a lift camshaft in a stock block and expect anything to change performance wise. Your best bet is to go back to a stock camshaft until you're ready with a new block to support the Pro2 Camshafts.

 

I met a guy at a meet who had this set up with 209 whp on the dynojet, it ran hard up to 9200 rpm and the valve clearance had it just right without the need for shaved pistons with stock 9,6:1 93 oct,but I can't find him to consult him. Anyway I just made an air compressor for blocked vtec so once I have the results I will post it. I would even have liked to get a b20z to reach 11:1 / 11,2:1 but this low comp was cheap.

 

That's fine. I won't dispute that. you can afford what you can. but don't expect any positive results. the example you showed doesn't take into account any responsiveness or usable powerband.. What you're seeing is one gear.. peak power

 

Yes, I know the importance of the powerband, my old set up worked faster with the pro2 than the pro3, I know 3 other guys who regretted going from pro2 @ pro3 ... I really think that pro3 is for 2.1L stroker - 2.2L, my purpose with this set up is to have a very cheap and powerful swap ... For the powerband I can always delay the vtec, even try b16 intake or an LS lol, it's a matter of testing

 

If you say so.... I'll leave you to it, sir.

 

I bet vtec would hit hard af. Go for it

 

Do you understand how cam lift and duration affect compression?

 

It may be best if you can provide with him some links or other video information or reading material as to how lift and duration on a camshaft function as a correlation with engine RPM and both static & effective compression ratio.

I understand that it might be a tall order to take some time to give him a bit of a "spoon feed", but I'm quite sure that it will help him understand this at length, as opposed to him posting multiple threads of the same topic in multiple forums ;-). (Sorry, I had to.. it was getting pretty bad, and i couldn't just penalize him for being such an "eager beaver". ;-))

if anyone has the ability to give that type of information in a quick and reasonable manner, it's you, my friend. I'm semi- retired.

 

I only asked for p2v clearance for stock block, I did not ask for debate or discussions as suggested by the title of the post changed by an administrator

 

IB should start paying us

I have a broken hand and typing hurts so I figured I'd just drop some crumbs and let him figure it out, but he seems intent on ignoring people that have been doing this for decades so I'll just let him do his thing.

 

I could always just give infraction points instead next time. Pick your poison, sir. That took a lot of time to clean up your multiple posts of the same information. I thought I would take a higher road, with using titles that people could more than likely understand and give more feedback to you as opposed to re-reading the same information attempting to guess the title topic. That way, everyone wins, and no one is penalized. Seem fair?

Hopefully, you'll get an answer that is satisfactory to you, sir.