I Just Acquired A Clements Engine
- Thread starter Badrooster
- Start date
MO Predator Racer
Member
I remeber that you said the intake cam lobe is bigger than the exhaust so it probably needs a bigger pocket than the exhaust.
If this is lift, not duration as stated earlier, should be self explanatory why valve reliefs are different. No need to give up compression, if the valve never reaches that point.
Badrooster
Member
I understand why it may have been done. Was asking if anyone has seen this, and maybe expand on it? I appreciate your input, tho.
CarlsonMotorsports
Site Supporter
I "think" what he is referring to is the big difference in lift between IN & EX.
No, it is not common at all.
We tried something similar maybe 25-30 years ago and it didn't work - just built a bunch of heat.
I may still have the cam in the R&D area (I rarely get rid of anything = bad episode of hoarder.)
For very short tracks, we still build some ohv stuff with 1.3 ratio IN and 1.2 ratio ex to get some of this same effect of lower lift exhaust.
No, it is not common at all.
We tried something similar maybe 25-30 years ago and it didn't work - just built a bunch of heat.
I may still have the cam in the R&D area (I rarely get rid of anything = bad episode of hoarder.)
For very short tracks, we still build some ohv stuff with 1.3 ratio IN and 1.2 ratio ex to get some of this same effect of lower lift exhaust.
Badrooster
Member
THAT's pretty much what I was looking for. Thank you, Brian.
Flatlives
Member
Are you selling the Clements head badrooster?
Badrooster
Member
No, Sir. I'd consider selling the entire Engine.
Badrooster
Member
Yes, there are 2 levels, and I DO know what you are asking. This is something else that I've never seen. It's almost like a built-in Head Gasket. There's even a little ledge under the middle bolt hole on the right, in the Picture.
