SoCal Jet Boats

Tech Talk => Engine Mechanical / Electrical => Topic started by: Kyle700 on August 22, 2011, 04:42:43 PM

Title: Exhaust flappers
Post by: Kyle700 on August 22, 2011, 04:42:43 PM

(Thru hull rubber flapper) Does anyone make their own. What is a good material that can take the heat?

Thanks

Title: Re: Exhaust flappers
Post by: Your Mom on August 22, 2011, 04:51:44 PM

What type of tip... do you need butterfly style?

Title: Re: Exhaust flappers
Post by: Kyle700 on August 22, 2011, 05:03:09 PM

I don't know the technical term of them. It is 3 1/4 dia. on the outside half of the exhaust tip. Looks like "trumpet" style according to one on ebay.

Title: Re: Exhaust flappers
Post by: Your Mom on August 22, 2011, 05:12:03 PM

Can do internal or external flapper...
http://www.cpperformance.com/c-469-replacement-flappers.aspx (http://www.cpperformance.com/c-469-replacement-flappers.aspx)

Title: Re: Exhaust flappers
Post by: ka0tyk on August 22, 2011, 05:44:12 PM

Call rexmar and tell em you need a pair of "390 216"...  $4.50 each.  Done deal.

Title: Re: Exhaust flappers
Post by: GlassCutter on August 22, 2011, 07:36:40 PM

I have gotten my last couple from Tom @ JBP.   Why does the one on the right always wear out first?

Title: Re: Exhaust flappers
Post by: simidan on August 22, 2011, 08:19:07 PM

Quote from: GlassCutter on August 22, 2011, 07:36:40 PM

Why does the one on the right always wear out first?

Ive notied that too. Ive also noticed the head on that side gets a little warmer.

Title: Re: Exhaust flappers
Post by: ka0tyk on August 22, 2011, 10:03:41 PM

Quote from: GlassCutter on August 22, 2011, 07:36:40 PM

I have gotten my last couple from Tom @ JBP.   Why does the one on the right always wear out first?

if its a bbc that exhaust side is closer by a couple inches...