Keep in mind that two engines with the exact... - Forced Induction Message Board

...same displacement but different compression ratios will *not* have the same combustion chamber volume. The lower compresion ratio engine will have a larger combusion chamber which allows it to hold more air/fuel - - leading to a larger *BANG*, and thus more HP/TQ. This is why I said that the above formula is somewhat simplified. I believe that any turbocharging basics book (including Corky's) should include ECR's in it's primer. Rgds...

- John
'92 850i Twin Turbo

debate: higher compression ratio vs higher boost - papajetta 2005-04-19 20:25:38 (1638 views) (4275 thread views)
- You Guys tear-it-it-up. I am in process of...> - 2xTurbo633, PolariSharkM635, 325iC 2005-06-18 01:04:33 (497 views)
  - Here's a link to the pics for the in processSet-up (url) - 2xTurbo633, PolariSharkM635, 325iC 2005-06-18 01:11:16 (414 views)
- A bit of math to guide you... - John in DC ©⁷⁸ 2005-04-19 23:35:56 (626 views)
  - Really fuzzy math logic going on there. You - John N 2005-04-20 22:12:01 (490 views)
    - Keep in mind that two engines with the exact... - John in DC ©⁷⁸ 2005-04-21 07:52:37 (441 views)
    - Not sure I'm following your logic, John... - John in DC ©⁷⁸ 2005-04-21 07:49:03 (391 views)
      Simple. CR=9.5 or 8.5, boost = 5psi or 7psi - John N 2005-04-21 13:04:23 (534 views)
      Yes, but as I said above.... - John in DC ©⁷⁸ 2005-04-21 23:22:10 (371 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 (288 views)
      Re: thanks for the info john - Aurther 2005-07-01 20:07:26 (226 views)
      Converting compression test CR to static CR... (url) - John in DC ©⁷⁸ 2005-07-04 05:42:39 (315 views)