10-08-2013, 03:15 PM #1
Are these the Good SeaDoo Exhaust Valves??
I have an 06 4-Tec motor that I'm planning to drop into my GPRXP project Ski and wanted to make sure it didn't have the BAD valves in it.
Here is a pic of the top of the exhaust valve stem
The number is: 75219???
10-08-2013, 03:18 PM #2
10-08-2013, 05:02 PM #3
Number starting with 75 is the later, better ones.
IMO No stock valve is great and would always upgrade when doing a head job.
Ones starting 72 are the early ones.
10-08-2013, 05:05 PM #4
I wouldn't highly mod a ski with stock valves regardless of year
10-08-2013, 07:21 PM #5
Look at the exhaust valves those are the ones prone to corrode and snap... Make sure they start with a 75, the intake ones might start with a 72 but that's fine. I ran my ski for over a hundred hours with out problems, 20 of those hours were at over 15lb boost and over 8800rpms.
10-08-2013, 07:24 PM #6
10-08-2013, 10:18 PM #7
10-08-2013, 11:13 PM #8
Its only a reliability concern on the skis with the sodium filled valves, the later ones seem fine. Heaps of guys seem to be running stock valves no problem.
10-09-2013, 07:53 AM #9
Tocullo is absolutely right. Supertechs are far better, but are you going to trash a newer style valve? Doubt it. They're just fine. Once you start heading over 8700RPMs then it's time to start looking at Ferra or Supertech. Supertech is my option.
10-13-2013, 07:39 PM #10
- Join Date
- Jul 2005
- euxton nr chorley lancashire, england
the 04 05 hollow valves are fine till they corrode thru not winterizing propley
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