Flappers
03-03-2002, 07:25 PM
#1
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Location: Lake Orion, MI. USA
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Flappers
I posted this question in the technical section:
I have 502 x whipples and stainless marine exhaust x CMI switchable tips.
Question is should I have flappers inside the pipe somewhere? They are straight pipes and if I look up them when the tip is open I can see all the way up to the bend by the riser. I am concerned about reversion or when just plain stopping having water ruch up there. What should I do I cannot put flappers on the outside as it would interfere with the tips.
http://www.jlmwholesale.com/tips.jpg
http://www.jlmwholesale.com/engine.jpg
I am wondering if those with 340's and 380's have flappers in your exhaust pipes?
I have 502 x whipples and stainless marine exhaust x CMI switchable tips.
Question is should I have flappers inside the pipe somewhere? They are straight pipes and if I look up them when the tip is open I can see all the way up to the bend by the riser. I am concerned about reversion or when just plain stopping having water ruch up there. What should I do I cannot put flappers on the outside as it would interfere with the tips.
http://www.jlmwholesale.com/tips.jpg
http://www.jlmwholesale.com/engine.jpg
I am wondering if those with 340's and 380's have flappers in your exhaust pipes?
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Ray
Ray
03-04-2002, 08:06 AM
#2
OSO Moderator
Charter Member
Yes I have flappers.
As low as the 340 & 380 sit in the water, I would be SURE to have them installed!!!
As low as the 340 & 380 sit in the water, I would be SURE to have them installed!!!
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BillR
'00 Scarab Sport 302 CC
'02 Cigarette Top Gun TS
'02 PQ 340
'00 PQ 280
'98 Scarab 22
'97 Baja Outlaw 20
'72 Checkmate
'65 Glastron
BillR
'00 Scarab Sport 302 CC
'02 Cigarette Top Gun TS
'02 PQ 340
'00 PQ 280
'98 Scarab 22
'97 Baja Outlaw 20
'72 Checkmate
'65 Glastron
03-04-2002, 11:35 AM
#5
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Posts: n/a
PQ has used CORSA tips, exclusively for years. They have a "fixed" plate just inside the tip. It is tack -welded in 3 spots and approx. 1/4" dia. less than the tip ID for reversion. I removed these on my 260, bought new tips w/rubber salsbury flaps and gained 0. Still probably better than the "Carek" style butterfly damper (no moving parts). My 02
