Go Back  Offshoreonly.com > Technical > General Q & A
length of exaust >

length of exaust

Like Tree1Likes

length of exaust


Old 04-18-2014, 11:48 PM
Thread Starter
Join Date: Mar 2012
Posts: 2
Default length of exaust

how long does the exaust pipes have to be with a 235 at 50 duration camshaft so water doesn't get in the motor chevy
big block
mannytune is offline  
Reply With Quote
Old 04-19-2014, 02:12 AM
Charter Member # 55
Charter Member
Griff's Avatar
Join Date: Oct 2000
Location: Omaha
My Boat: .......32............. ............Active Thunder....
Posts: 16,675

Reversion is more dependent on lob sep and cam overlap. Post all the cam specs.
What matters is how far back the water mixes with the exhaust.
Griff is offline  
Reply With Quote
Old 04-20-2014, 09:24 AM
Platinum Member
Platinum Member
35fountain's Avatar
Join Date: Jul 2009
Location: NY
My Boat: 1992 35' Fountain Signature
Posts: 552

If you dump some water out of the exhaust before it gets to the ss pipes this could help stop reversion. I put a custom made 1/2 "tee on the hose connecting the exhaust manifold with the ss pipe EMI exhaust. You only need a very small amount of water to cool any rubber exhaust hose. My cam is a 236 duration @ .050 No problems here and I have the short ss risers

Last edited by 35fountain; 04-20-2014 at 09:48 AM.
35fountain is offline  
Reply With Quote

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

OSO Sponsor
OSO Advertiser
OSO Advertiser
OSO Advertiser