74 Compression Test v.2

[74L82]

I have attached the second compression test results which roughly double the numbers from the first test I had done on the 74 L82 I'm considering buying (thats what I get for having a friend do the first one). Any helpful advice on the results are appreciated...thanks

 

[Billybeau1]

Is my computer going wacky or do I not see anything in the attachment?

 

[brusso]

Only get big gray box.

 

[Billybeau1]

According to the manual, compression should be about 150 psi with a maximum variance between cylinders of 20 psi. On a healthy engine compression should build up quickly (about four strokes.

 

[74L82]

Is my computer going wacky or do I not see anything in the attachment?

my mistake...here's the numbers:
#1 160
#2 155
#3 160
#4 155
#5 165
#6 160
#7 160
#8 155
thanks

 

[Billybeau1]

my mistake...here's the numbers:
#1 160
#2 155
#3 160
#4 155
#5 165
#6 160
#7 160
#8 155
thanks

Looking good. The books says unusualy high numbers can be caused by carbon deposits on the combustion chambers.

 

[wishuwerehere82]

Those are great numbers! Nothing wrong there.

 

[brusso]

:d :d :d :d

 

[74L82]

thanks for the feedback everyone...seller has agreed on a price and i should be cruisin' and wavin' very soon after a 3 year vetteless drought..

 

[Billybeau1]

Good luck. Post some pics when you get a chance.

 

[74L82]

Good luck. Post some pics when you get a chance.

here ya go...

the new one (deal pending)

my old one - 75 L82 4spd (93-02)

guess i've got an orange fetish...

 

[74bigblock]

Nice to have another '74 around! Those comp #'s look great!


-Dave

 

[Billybeau1]

Orangch you glad you got another vette

 

[brusso]

Orangch you glad you got another vette

I love it!