# Compression ka24de

**URL:** <https://forums.speedlife.net/t/compression-ka24de/114462>\
**Category:** SON240sx Automotive\
**Created:** [April 6, 2008, 6:45pm UTC](https://forums.speedlife.net/t/compression-ka24de/114462 "2008-04-06T18:45:40Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![IRo](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/iro/32/5564_2.png) [@IRo](https://forums.speedlife.net/u/IRo)\
**Post date:** [April 6, 2008, 6:45pm UTC](https://forums.speedlife.net/t/compression-ka24de/114462/1 "2008-04-06T18:45:40Z")

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I went to the second day of the Cayuga track; it was only drag. I had a good time but I was running 16.5 all day, sometimes even higher. It was fairly depressing although expected. My car is pretty much stock, to the engine. So I came home and decided to do a compression test and I was getting 155-160 on all cylinders. I was reading some old posts and people are saying 180 to even 200. I have 91’ ka24de. So is my engine crapped out on me?

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**Author:** ![R33](https://avatars.discourse-cdn.com/v4/letter/r/5f8ce5/32.png) [@R33](https://forums.speedlife.net/u/R33)\
**Post date:** [April 6, 2008, 7:11pm UTC](https://forums.speedlife.net/t/compression-ka24de/114462/2 "2008-04-06T19:11:50Z")

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as long as its consistent across its ok …

16.5 is the average time for a ka … i managed a 16.6

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**Author:** ![IRo](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/iro/32/5564_2.png) [@IRo](https://forums.speedlife.net/u/IRo)\
**Post date:** [April 6, 2008, 8:01pm UTC](https://forums.speedlife.net/t/compression-ka24de/114462/3 "2008-04-06T20:01:22Z")

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So i shouldn’t expect 180’s across?

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**Author:** ![R33](https://avatars.discourse-cdn.com/v4/letter/r/5f8ce5/32.png) [@R33](https://forums.speedlife.net/u/R33)\
**Post date:** [April 7, 2008, 11:41am UTC](https://forums.speedlife.net/t/compression-ka24de/114462/4 "2008-04-07T11:41:24Z")

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not all ka’s will show 180 across … some ive tested have shown 200+ , others lower.

if all cylinders are 155 - 160 , thats ok

if cylinder 1,2,3 are 155 and 4 is 180 then there is something wrong there.

if the compression numbers are Constant within (10 psi i think ?) across 4 cylinders then ur motor is fine.

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**Author:** ![redpotatoes](https://avatars.discourse-cdn.com/v4/letter/r/ecae2f/32.png) [@redpotatoes](https://forums.speedlife.net/u/redpotatoes)\
**Post date:** [April 7, 2008, 11:57am UTC](https://forums.speedlife.net/t/compression-ka24de/114462/5 "2008-04-07T11:57:00Z")

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Compression Pressure kPa (kg/cm2, psi) / RPM  
Standard = 1,236 (12.6, 179) / 300  
Minimum = 1,040 (10.6, 151) / 300  
Difference limit between cylinders = 98 (1.0, 14) / 300

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**Author:** ![IRo](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/iro/32/5564_2.png) [@IRo](https://forums.speedlife.net/u/IRo)\
**Post date:** [April 20, 2008, 4:01pm UTC](https://forums.speedlife.net/t/compression-ka24de/114462/6 "2008-04-20T16:01:07Z")

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so i went to the track again today, did a lil timeing change with the rotor cap, and I got a 15.8, with a .341 reaction time, this time I left all the seats even the spare tire in and got better, timming musta been pritty sucky… im happier… still slow though, i supose 160 psi isnt the end of my life