Yes, but as I said above.... - Forced Induction Message Board

...if you take two engines with identical displacement...

The engine with lower compression ratio will be able to make more HP due to the fact that the combustion chamber is larger.

Once the ECR approaches 18:1, you're no longer in pump gas territory anyways. Follow the link below for a good discussion about this by Jim Conforti.

Hope this helps...

- John
'92 850i Twin Turbo

debate: higher compression ratio vs higher boost - papajetta 2005-04-19 20:25:38 (1641 views) (4295 thread views)
- You Guys tear-it-it-up. I am in process of...> - 2xTurbo633, PolariSharkM635, 325iC 2005-06-18 01:04:33 (499 views)
  - Here's a link to the pics for the in processSet-up (url) - 2xTurbo633, PolariSharkM635, 325iC 2005-06-18 01:11:16 (417 views)
- A bit of math to guide you... - John in DC ©⁷⁸ 2005-04-19 23:35:56 (629 views)
  - Really fuzzy math logic going on there. You - John N 2005-04-20 22:12:01 (491 views)
    - Keep in mind that two engines with the exact... - John in DC ©⁷⁸ 2005-04-21 07:52:37 (443 views)
    - Not sure I'm following your logic, John... - John in DC ©⁷⁸ 2005-04-21 07:49:03 (393 views)
      Simple. CR=9.5 or 8.5, boost = 5psi or 7psi - John N 2005-04-21 13:04:23 (536 views)
      Yes, but as I said above.... - John in DC ©⁷⁸ 2005-04-21 23:22:10 (373 views)
      Sorry. Forgot to include the link.... (nt) (url) - John in DC ©⁷⁸ 2005-04-21 23:36:53 (390 views)
      Another attempt... - John in DC ©⁷⁸ 2005-04-21 23:40:10 (354 views)
      thanks for the info john - papajetta 2005-04-26 21:02:03 (289 views)
      Re: thanks for the info john - Aurther 2005-07-01 20:07:26 (228 views)
      Converting compression test CR to static CR... (url) - John in DC ©⁷⁸ 2005-07-04 05:42:39 (316 views)