Probably need headers
#1
Registered
Thread Starter
Join Date: Jul 2004
Posts: 10
Likes: 0
Received 0 Likes
on
0 Posts
Probably need headers
Guys, I would appreciate your expert feedback. 2001 Scarab twin 502 EFIs stock. Port motor was running rough and spitting fuel out the exhaust and after inspection revealed a bent valve, subsequent valve job is under way.
My mechanic says the stock exhaust manifolds on these motors tend to cause slight reversion and have ruined many motors with only few hours like mine which have only 135 hours. Headers are advised.
Your input and any connections to low cost or used headers available would be greatly appreciated. Also could this have been caused at the wash rack by having the to much water pressure from the flush hose?
Thanks,
Mike
My mechanic says the stock exhaust manifolds on these motors tend to cause slight reversion and have ruined many motors with only few hours like mine which have only 135 hours. Headers are advised.
Your input and any connections to low cost or used headers available would be greatly appreciated. Also could this have been caused at the wash rack by having the to much water pressure from the flush hose?
Thanks,
Mike
Last edited by strikeforce; 03-14-2007 at 04:32 PM.
#2
Registered
Join Date: Jan 2006
Posts: 88
Likes: 0
Received 0 Likes
on
0 Posts
Your mechanic is most likely correct. Not that the exhaust is prone to reversion, but usually caused by a leaking gasket between the manifold and riser or if your using in salt water they corrode internally. This can also be caused by improper winterizing. Pocket of water freezes and cracks internally.
(not related to excess water pressure from the hose)
(not related to excess water pressure from the hose)
#5
Registered
Join Date: Feb 2005
Location: oceanport nj
Posts: 1,626
Likes: 0
Received 0 Likes
on
0 Posts
I'm no merc tech but my bud says to change those riser gaskets at minimum every other season. Does that make sense, pull the risers , inspect the manifolds , replace the gaskets as part of routine maintenence like servicing your drives?
Last edited by hunster; 03-20-2007 at 05:16 AM.