Resolved Help! Compression for the 420a

[D'seclipse]

Whats the compression for the 420a? 200 across all 4 cylinders? Thanks for the help.

 

[EvuLFleA]

9.6:1 so yeah somewhere like 200-215.

 

[abstraction]

anything abover 180 is considered decent..

 

[EvuLFleA]

Originally posted by abstraction
abover

, that is an awesome word.

Above or over. Compromise and make abover

 

[RACER-X]

damn, that reminds me.. i need to check mine too.

 

[madracer247@aol]

how and where di you check your compression on your car I was wondering I have asked and they want to charge me like 90.00 ok guys thanks

 

[D'seclipse]

You can go to an auto parts and purchase a compression guage for like 15-30 bucks depends on what you want. Then you have to pull a plug and disconnect the coil....i think...might check with someone else.

 

[abstraction]

Originally posted by EvuLFleA


, that is an awesome word.

Above or over. Compromise and make abover

haha.... man, i didn't even notice that.... it was actually a typo... but i think i'm gonna start using that word now

 

[TalonESi]

Originally posted by D'seclipse
You can go to an auto parts and purchase a compression guage for like 15-30 bucks depends on what you want. Then you have to pull a plug and disconnect the coil....i think...might check with someone else.

If you disconnect the coil, then how is the engine suppose to start?

 

[stickman]

Originally posted by TalonESi
If you disconnect the coil, then how is the engine suppose to start?

It's not.You're just checking the compression,you don't want the engine to start

 

[EvuLFleA]

Crank it

 

[1TuffRS]

well when we did a compression check on my car mine was 220-220-225-220 or was it 225-225-230-225, I cant remember but we got these numbers with a leaky tester.

 

[EvuLFleA]

Yes, but you have a factory freak so you don't count.

 

[madracer247@aol]

so do you think my uncles shop will know what will I need or maybe he could just do it for me ok guys thanks ???

 

[98RedGs]

Compression shouldnt be that hard but i have thought about getting the compression tool to check it myself but i dont know if i will be doing it right...

 

[abstraction]

heh, don't worry about it.. the tool is pretty cheap and it's not too hard to do.... there's not much you can screw up with... just make sure your plugs and injectors aren't going to fire when you crank it... that can make a mess

 

[stickman]

Originally posted by madracer247@aol
how and where di you check your compression on your car I was wondering I have asked and they want to charge me like 90.00 ok guys thanks

look here:
http://www.2gnt.com/www/corbin/comp.html

 

[TalonESi]

Nice link, thx.

 

[vtecdiet]

yo,
sorry to break the 2g mojo here but i have a 1g and my compression all of the sudden dipped hard into the 60s on #1 cylinder with a steady fall goin through the rest any of u geniuses know what this is maybe a head gasket or i need a valve job any input would be awesome, ps i just recently had new head installed guy claimed he threw on new gasket and 12 new valves so i dont know if he #@%#@%#@%#@%ed up or what tell me what u think.

 

[TalonESi]

It could be the ring...

 

[1TuffRS]

yeah, if it isnt the head gasket it may be your piston ring lands. I know there are a couple of tests that you can do to determine which one it actually is. I just cant think of what they are at this current time.

Well if I have a freak you should to talk to one of the NT guys in my club, my car is barely faster than his and all he has is an UDP short ram, and GST muffler, since im running 15.4's im thinking he should be around 15.5-6