Compression on a 220 gpu

A general, non-powerplant specific, discussion on airboat technology, ie., hulls, rigging, polymer, etc..
Msd78
Southern Airboat Member
Posts: 2
Joined: Thu May 04, 2017 7:08 pm

Compression on a 220 gpu

Postby Msd78 » Fri May 05, 2017 1:24 pm

Does anyone know what the compression should be on a 220 gpu? I know the best thing to do is a leak down. Just trying to get an idea.

CypressHunter
Southern Airboat Member
Posts: 275
Joined: Thu Mar 18, 2010 6:32 pm
Location: Melbourne, FL

Re: Compression on a 220 gpu

Postby CypressHunter » Fri May 05, 2017 11:32 pm

I don't know the exact numbers but if you go under the aircraft forum there are links for the service manuals for GPU's. Depends on what pistons you have
13' 6'' Cotton Mouth 220 GPU 70'' signature series

User avatar
kwanjangnihm
Site Supporter - IV
Site Supporter - IV
Posts: 1439
Joined: Sat Mar 30, 2013 8:23 pm
Location: Bartow FL

Re: Compression on a 220 gpu

Postby kwanjangnihm » Sat May 06, 2017 7:27 am

check this link: viewtopic.php?f=47&t=52577
Bruce wrote:no less than 100lbs on a stock 220

skinny99 wrote: 100# is referring to a cranking cylinder compression test

Msd78 wrote: I know the best thing to do is a leak down
:thumbleft:
" I don't care who you are back in the world, you give away our position one more time, I'll bleed ya, real quiet. Leave ya here. Got that? "

Msd78
Southern Airboat Member
Posts: 2
Joined: Thu May 04, 2017 7:08 pm

Re: Compression on a 220 gpu

Postby Msd78 » Sat May 06, 2017 7:04 pm

Thank you for all the info.


Return to “Airboat Tech”

Who is online

Users browsing this forum: Bing [Bot] and 1 guest