Compression test

[Jackson1320]

My ass does stink, no argument there.



I can assure you I do.



I come from a highly technical background, also have been wrenching on cars since I was a teenager.



Again, it varies. Did my first compression test as well as a leakdown test on an engine in the mid 90's when I was 17. This was in an Acura Integra and was done just before we swapped out the engine. We wanted to be sure we could sell the engine as one that ran, rather than a rebuild.


I'm sorry you didn't like the answer I gave, but what I'd said was based on experience. There are a number of posters here (like engineermike) who really know there stuff here but for every one that does, there are a lot who don't.

Same can be said for you, you’ve been given several answers on why there could be so many variables but you immediately shoot them all down because you don’t think it’s correct. “Nobody does a compression test with throttle closed” being a perfect example. It happens all the time. You’ve been told that the outright number doesn’t matter nearly as much as consistency, but you’re still stuck on a outright number. There is no answer to your question since all answers are wrong

I’m not looking to be a Asshole but I asked for information about compression test Numbers. I don’t have any need for you to tell me what a leak down test is good for I already know

Sponsored

 

[CorvZ061]

Did you enjoy riding the little bus to school. I never said that you should do a compression test with the throttle shut. I said it would not change the results much if any. It doesn’t matter what you think about variables because I didn’t ask for variables. I’m asking for numbers that people are getting from a compression test. None of your business what I use the information for. If you don’t want to provide the numbers you have experienced fine. mind your business, shut your mouth and Move on already. Some of the variables mentioned don’t do what you think. I have probably built more coyotes than you have driven. I doubt you could give me one piece for information I don’t already know on the coyote. So hop back on the little bus and be gone

You literally did question why there could be so many variables. But you’ve built so many coyotes everyone else’s opinion doesn’t matter, so why even ask? I’ve never built a coyote, owned several. I have however built well over 50 other engines, everything from small block Ford’s to 711ci Sonny Leanord Big blocks. But yea, the coyote is special, defies all rules that other internal combustion engines follow.

 

[Jackson1320]

You literally did question why there could be so many variables. But you’ve built so many coyotes everyone else’s opinion doesn’t matter, so why even ask? I’ve never built a coyote, owned several. I have however built well over 50 other engines, everything from small block Ford’s to 711ci Sonny Leanord Big blocks. But yea, the coyote is special, defies all rules that other internal combustion engines follow.

I never said everyone else’s opinion doesn’t matter, I welcomed some of the information provided. You have not provided one reason why someone can’t do a compression test on there coyote and share the results. You keep providing reasons why there could be low compression but we are not talking about low compression we are talking about why it might show high compression

 

[Jackson1320]

Here’s a little information I found case anyone’s having the same questions

 

[Elp_jc]

What should be the compression ratio (or the range) of a 2019 Coyote at sea level? Read the 3 pages, and nobody mentioned that. Thanks.

Sponsored