Offshoreonly.com - 502 compression specs

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Offshoreonly.com (https://www.offshoreonly.com/forums/)

- General Q & A (https://www.offshoreonly.com/forums/general-q-20/)

- - 502 compression specs (https://www.offshoreonly.com/forums/general-q/331114-502-compression-specs.html)

FIXX	09-28-2015 02:48 AM

Quote:

Originally Posted by Baja170 (Post 4359297)

Most of the guys I talk to say leakdown is just as important as compression and when they did your compression check did they oil anything or go back with compressed air to see where the leak was? Just curious, I am no expert but I have a lot of toys I have been dealing with for years.

i have seen similar numbers on every 502 i work on..they need to get hot to get good numbers and the butterfly wide open..

Black Baja

09-28-2015 06:10 AM

Livorsi also had a kit that they used a Procharger. This was back b4 Procharger ever had a marine side.

onesickpantera

09-28-2015 07:26 AM

Quote:

Originally Posted by dp9650 (Post 4359424)

I have photos, I wish I could figure out how to post them. It is a twin setup, two air pipes, one from each blower. Absolutely positive. I have never seen anything like it.

Interesting. You can post the pics on photobucket and link them here.

onesickpantera

09-28-2015 07:26 AM

Quote:

Originally Posted by FIXX (Post 4359460)

i have seen similar numbers on every 502 i work on..they need to get hot to get good numbers and the butterfly wide open..

X2...especially if the boat has been sitting.

dp9650

09-28-2015 07:51 AM

Thank you for the responses, gives me a little more to go on.

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