See my post from this morning to get my full set up, if you want... but I'm just gonna start from here:

I'm building my d16y8 to almost 11.0:1cr. After talking to someone at Crower I was convinced to go with their Stage II Turbo cam, rather than their Stage II Street/Strip or their Stage III Race applications. He said that because of the shorter duration, my high compression set up would be safer with the turbo cam...

Can anybody corroborate? Please, if you can, explain why I should, or should not, go with the turbo cam over one of the other cams.

Here are the specs for all the cam applications Crower sells for the y8:
http://crower.com/cat/import/honda/cams/d16y.shtml

 

I was having a similar conversation with a guy I work with who builds pro mod engines and does street cars on the side.

His explanation for this if I am correct in my memory was that a longer duration cam on a high static compression motor will actually lower the running compression allowing you to run more timing with pump gas than you could with one with a shorter duration.

The gist of it is that an 11;1 setup as you put it is determined by bore, combustion chamber volume, and piston dish/dome and stroke/so on. Now when you factor running compression, you figure in where the valves will close and the location of the piston at the closing point and that is your running compression or the compression the motor actually sees.

In my humble uneducated backyard do it all myself opinion, you are not going to want a short duration cam with a HC motor. There are a lot of guys on here a lot smarted than me that will probably shed more light on this though.

 

I don't know, maybe I should call Crower again and see if someone else will recommend their Stage II Street/Strip or Stage III Race cam instead.

If anyone has reason to believe I should use the Turbo cam, please speak now.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by CALC!_JUST_du_IT! &raquo;</TD></TR><TR><TD CLASS="quote">See my post from this morning to get my full set up, if you want... but I'm just gonna start from here:

I'm building my d16y8 to almost 11.0:1cr. After talking to someone at Crower I was convinced to go with their Stage II Turbo cam, rather than their Stage II Street/Strip or their Stage III Race applications. He said that because of the shorter duration, my high compression set up would be safer with the turbo cam...

Can anybody corroborate? Please, if you can, explain why I should, or should not, go with the turbo cam over one of the other cams.

Here are the specs for all the cam applications Crower sells for the y8:
http://crower.com/cat/import/honda/cams/d16y.shtml</TD></TR></TABLE> Ask Mike, Rocket, Bambam, Hardt, or Combustion Contraption, etc. except maybe they went and got a life like you suggested and do not have time to answer. I know I do not.

 

Taking things a little personally I see... However, it's not that you don't have the time, it's that you don't have the knowledge. You had time to post that worthless comment, did you not? I'm posting questions that call for technical explanations that will help me make a sustainable all motor build: this is entirely appropriate criteria for this forum. If you can't answer the question, that's fine. I'm just looking for answers that I couldn't get using the search tool.

 

Calc, DonF is just directing you to the people that can go into detail on the questions you asked. He's one of the better knowledgeable people on the forum and its not that he doesnt know anything. I'm a big SOHC fan myself and I look for SOHC posts and try to answer whenever I can. But we all have regular lives and dont live on the forums. I'm jus getting on HT in between painting and working on a renovation on my bathroom. Not all of us can spoon feed information all day long.

I'd like to post in this SOHC thread, but we have our own cams that we sell so it would be a conflict of interest, so i'd rather stay away and not comment on Crower. that's their job to get in the forums to answer you or through the phone.

 

Don is an *******, but he's also far from unknowledgable. These guys like to make you think for yourself. The problem is that they're usually so vague that only people who already have the knowledge know what they're talking about. When they ask questions, it isn't because they don't know it's because they want you to think about it.