# Paging Adam - Do you have a bore scope? pic inside isnt good. **URL:** \ **Category:** Shift518 Automotive\ **Created:** [November 26, 2009, 11:21am UTC](https://forums.speedlife.net/t/paging-adam-do-you-have-a-bore-scope-pic-inside-isnt-good/248638 "2009-11-26T11:21:32Z")\ **Posts on this page:** 10\ **Page:** 2
**Author:** ![TurboTravis](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/turbotravis/32/6406_2.png) [@TurboTravis](https://forums.speedlife.net/u/TurboTravis)\ **Post date:** [November 28, 2009, 4:03am UTC](https://forums.speedlife.net/t/paging-adam-do-you-have-a-bore-scope-pic-inside-isnt-good/248638/21 "2009-11-28T04:03:11Z")
> [@How much header wrap for my header???](https://forums.speedlife.net/t/how-much-header-wrap-for-my-header/26417/7): > > 8.5:1 healthy, should be 170-175psi. > > im shooting for a solid 200psi cylinder pressure on my next build. no 8.5:1 garbage again. A lot of that is decided in the cam dude, but I am sure you know that. Mostly stated that as a lot of people don’t know the difference between dynamic and static compression. ---
**Author:** ![Mk4\_30R\_Ban](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/mk4_30r_ban/32/6347_2.png) [@Mk4\_30R\_Ban](https://forums.speedlife.net/u/Mk4_30R_Ban)\ **Post date:** [November 28, 2009, 8:47pm UTC](https://forums.speedlife.net/t/paging-adam-do-you-have-a-bore-scope-pic-inside-isnt-good/248638/22 "2009-11-28T20:47:29Z")
> [@TurboTravis"](#): > > A lot of that is decided in the cam dude, but I am sure you know that. Mostly stated that as a lot of people don’t know the difference between dynamic and static compression. d00d, hes got stock cams. my 8.5:1 bottom end, stock cams when it was fresh, was 175 +/- 5 in all 4, the ring gaps were on the tighter side, dont know how loose his engine is or what but 170-175 maybe 180 is normal… my stock 9.5:1 was 195-200psi ---
**Author:** ![1320-20V](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/1320-20v/32/6474_2.png) [@1320-20V](https://forums.speedlife.net/u/1320-20V)\ **Post date:** [November 28, 2009, 9:43pm UTC](https://forums.speedlife.net/t/paging-adam-do-you-have-a-bore-scope-pic-inside-isnt-good/248638/23 "2009-11-28T21:43:22Z")
here is a fun calculator for dynamic. Just something to play with. Clearly this will not be accurate at all rpm and boost combination’s but its useful for cranking compression numbers. [http://www.wallaceracing.com/dynamic-cr.php](http://www.wallaceracing.com/dynamic-cr.php) ---
**Author:** ![KrazyKid](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/krazykid/32/6371_2.png) [@KrazyKid](https://forums.speedlife.net/u/KrazyKid)\ **Post date:** [November 29, 2009, 7:17am UTC](https://forums.speedlife.net/t/paging-adam-do-you-have-a-bore-scope-pic-inside-isnt-good/248638/24 "2009-11-29T07:17:57Z")
> [@Mk4 30R"](#): > > d00d, hes got stock cams. my 8.5:1 bottom end, stock cams when it was fresh, was 175 +/- 5 in all 4, the ring gaps were on the tighter side, dont know how loose his engine is or what but 170-175 maybe 180 is normal… my stock 9.5:1 was 195-200psi Hopefully not for long… :lol ---
**Author:** ![Fn\_Skanks](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/fn_skanks/32/6308_2.png) [@Fn\_Skanks](https://forums.speedlife.net/u/Fn_Skanks)\ **Post date:** [December 1, 2009, 11:44am UTC](https://forums.speedlife.net/t/paging-adam-do-you-have-a-bore-scope-pic-inside-isnt-good/248638/25 "2009-12-01T11:44:07Z")
only cam gear i have laying around is a stock 16v one off a 9A ---
**Author:** ![KrazyKid](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/krazykid/32/6371_2.png) [@KrazyKid](https://forums.speedlife.net/u/KrazyKid)\ **Post date:** [December 1, 2009, 12:06pm UTC](https://forums.speedlife.net/t/paging-adam-do-you-have-a-bore-scope-pic-inside-isnt-good/248638/26 "2009-12-01T12:06:16Z")
FN, thanks anyways. I picked up a new one from the stealership. shit runs like a champ. ---
**Author:** ![Fn\_Skanks](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/fn_skanks/32/6308_2.png) [@Fn\_Skanks](https://forums.speedlife.net/u/Fn_Skanks)\ **Post date:** [December 1, 2009, 12:15pm UTC](https://forums.speedlife.net/t/paging-adam-do-you-have-a-bore-scope-pic-inside-isnt-good/248638/27 "2009-12-01T12:15:17Z")
no problem. glad to see the thing isn’t toast! ---
**Author:** ![TurboTravis](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/turbotravis/32/6406_2.png) [@TurboTravis](https://forums.speedlife.net/u/TurboTravis)\ **Post date:** [December 1, 2009, 3:05pm UTC](https://forums.speedlife.net/t/paging-adam-do-you-have-a-bore-scope-pic-inside-isnt-good/248638/28 "2009-12-01T15:05:49Z")
> [@Mk4 30R"](#): > > d00d, hes got stock cams. my 8.5:1 bottom end, stock cams when it was fresh, was 175 +/- 5 in all 4, the ring gaps were on the tighter side, dont know how loose his engine is or what but 170-175 maybe 180 is normal… my stock 9.5:1 was 195-200psi The point is, is that you can’t always directly relate the compression ratio of the engine to the cranking compression. Choose your cam(s), compression ratio, and the cranking compression ends up being whatever it is. ---
**Author:** ![Mk4\_30R\_Ban](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/mk4_30r_ban/32/6347_2.png) [@Mk4\_30R\_Ban](https://forums.speedlife.net/u/Mk4_30R_Ban)\ **Post date:** [December 1, 2009, 3:44pm UTC](https://forums.speedlife.net/t/paging-adam-do-you-have-a-bore-scope-pic-inside-isnt-good/248638/29 "2009-12-01T15:44:50Z")
> [@wtb dd $0-5000](https://forums.speedlife.net/t/wtb-dd-0-5000/26545/5): > > The point is, is that you can’t always directly relate the compression ratio of the engine to the cranking compression. Choose your cam(s), compression ratio, and the cranking compression ends up being whatever it is. well, unlike you i know the setup he has(had the same bottom end, same STOCK camshafts), and i know what the range it should be in to be considered healthy still. and please no reference to a supra you used to have that had hks whatever cams and makes 160psi. dont care travis. reallllllly dont. ---
**Author:** ![TurboTravis](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/turbotravis/32/6406_2.png) [@TurboTravis](https://forums.speedlife.net/u/TurboTravis)\ **Post date:** [December 1, 2009, 4:03pm UTC](https://forums.speedlife.net/t/paging-adam-do-you-have-a-bore-scope-pic-inside-isnt-good/248638/30 "2009-12-01T16:03:03Z")
> [@Idea for a new swap](https://forums.speedlife.net/t/idea-for-a-new-swap/26564/8): > > well, unlike you i know the setup he has(had the same bottom end, same STOCK camshafts), and i know what the range it should be in to be considered healthy still. and please no reference to a supra you used to have that had hks whatever cams and makes 160psi. dont care travis. reallllllly dont. I’m just curious why you would shoot for a certain cranking pressure. Is the 200 number that you threw out there just something that you expect to see, or is it a goal? [Previous page](https://forums.speedlife.net/t/paging-adam-do-you-have-a-bore-scope-pic-inside-isnt-good/248638.md?page=1)