|T O P I C R E V I E W
||Posted - Mar 10 2012 : 19:17:59
How do you visually tell if your risers need replacment or is it a water flow test? Same for the manifolds. Thanks.
|6 L A T E S T R E P L I E S (Newest First)
||Posted - Mar 12 2012 : 02:42:06
That reminds me, I want to call Al Prisco and get him over to the boat with his Thermal Imager. THIS sounds like an easy way to tell if the manifolds/risers are working properly.
||Posted - Mar 11 2012 : 12:10:21
They still make the manifolds/risers for the 351 but there is only one style. The kind with the rectangular riser mating surface. People have complained of uneven clamping with that design.
||Posted - Mar 11 2012 : 11:03:34
At the top of the page BoatFix.com should get you started.
||Posted - Mar 11 2012 : 08:28:17
Do they still make an aftermarket manifold and riser for the 1989 OMC 351 engine. If not, surely there has to be some type of retrofit. Any ideas? Thanks.
||Posted - Mar 11 2012 : 01:23:48
Water flow test can tell you a multitude of potential problems.
Best to replace at safe periods according to your type of boating...not when you start blowing steam.
||Posted - Mar 11 2012 : 00:44:39
You can't effectively view them unless they are obviously bad. Best to replace on a schedule. Cleaning them to get more life is a super way to ruin an engine.