i know this is kindo of a lame question but...

when you're testing your compression does it matter if the engine is hot or cold?

thanks.

 

It should be warmed up. Usually you'll crank cold and get some smoke and heavy cologne until it gets warmed up... the stock choke will have have turned off by then ( if you still have one... I don't ). Then turn it off and test your compression. See all the great threads by using the search.

 

compression question

Hey, that rhymes... like Grimes

 

^ dork ^

 

Not lame at all. Cold compression is higher than hot compression.

 

oh nooooooooooooooooo


i was under the impression cold compression was lower than high compression.

.....anyone have a 12a they wanna sell?...............................

 

Carl sorry but i have a mazda tester and just for ***** and giggles i did a cold and then a hot test. I saw around 17 psi more on the hot tests.

 

Well thats what RB, Mazdatrix and Mazda have said. I swear I didnt make that up!

 

oh see i got around 65 or so on all sides of the rotors so i figured it must have been allright.
also it wasn't a mazda tester just a regular one, i'm not sure if that makes a big difference but it's probably less accurate.

thakns.

 

You calling me a whale *****, Nick ? I represent that remark.

 

Cold compression is higher because cold air is denser. The denser the air, the higher the compression will be. You may be getting higher compression readings because a hot engine's internals are warmer, and expanded, and possibly sealing better. All the tolerences on a hot motor will be tighter than a cold motor. Theoretically, a cold engine should have higher compression, though.

 

i really didn't understand that a "dork" is a whale's *****...so i checked google...

... Believe it or not, this is the first time I've ever seen a whale *****: ...
A whale's *****' official name is "Dork". How dorky is that? ...
www.planetdan.net/blog/2004/12/yowza.htm

damn....i will never laugh or make fun of you again......i have been "O3NED"!! sorry dude!!!

nick

 

by the way, by calling you "dude", i AM referring to "a pimple on a horse's ***"

 

You just totally contradicted yourself.

 

next time he should just call you an "oosik"

 

Oosik Ulus
... Our Oosik handled Ulus are made with ancient Walrus Oosik (Male Walrus *****
bone). Most have beautiful dark and or light brown color. ...
http://www.scrimshop.com/shopcart/it...sik_ulus1.html

how the hell do you guys know this stuff? i mean for what reason have you been studying dorks and oosik's?

 

Nah, cause if he calls me that, I'll call him a two word something like bloated lackey and he'd spend all night googling to find out what he is.

 

Well, because... We keep our friends close, but we must have intimate knowledge of our competition