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-   1st Generation Specific (1979-1985) (https://www.rx7club.com/1st-generation-specific-1979-1985-18/)
-   -   Compression Test (https://www.rx7club.com/1st-generation-specific-1979-1985-18/compression-test-698253/)

onefastrx712a 10-20-07 03:34 PM

Compression Test
 
OK before anyone says anything....I have done a search and didn't come up with a straight answer. SO please can someone tell me what kinda #'s I should have. Now I know that a regular piston engine tester isn't the best thing ....but you should still have a good idea right? And should you do the test when it is warm? Iv'e seen people saying anywhere from 60-120 is good? Is that correct? Now is there going to be any difference between the 12a and 13b? What about a stock motor compared to a ported motor? Please clear this up for me...(and everyone else)
Thanks

Rx-7Doctor 10-20-07 03:44 PM

All of the information except the streetport numbers is in the archive thread.

https://www.rx7club.com/1st-gen-archive-71/engine-compression-test-using-piston-engine-tester-597883/

onefastrx712a 10-20-07 03:54 PM

well son of a bi**ch. Well if that was a snake id be dead
Thanks RX7Doctor

Rx7carl 10-20-07 07:56 PM

Mazda motorsports has the numbers somewhere on their site, IIRC a SP should be like 120 where a non ported is 150. Cranking speed is critical to getting proper numbers.


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