Thread: 04 RXP dropping valves ???
10-06-2009, 08:26 PM #1
- Join Date
- Aug 2009
04 RXP dropping valves ???
Has anyone ever had a problem with valves dropping on the 04 after a higher boost charger has been added ? I have been told the 04 and some 05 had weaker valves.I got this info from I thinks the companies name was Power performace Group.They said I sould replace the head before I install the x-charger.I would like to hear you guys experiences with a 04 with an x-charger.
10-06-2009, 08:34 PM #2
10-06-2009, 08:37 PM #3
Type of supercharger has nothing to do with dropping valves.
The 04-05 exhaust valves are known to be weak and break off. Adding an X charger isn't going to make them break sooner.
There is no reason to replace your head. Just replace the valves with a set of 06 or newer valves or a set of Ferrea valves.
When you do replace your supercharger with an X charger be sure do deliver additional fuel depending on your level of modifications. If near stock when using the stock intercooler you can get by with just adding 42 lb injectors. If you have more extensive mods with an external intercooler you will also need a rising rate fuel pressure regulator.
10-06-2009, 08:51 PM #4
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- Aug 2009
So should I just go for it and put the x-charger,42's and a prop and go for it,or should I pull the head and replace the valves.I really don't want to remove the head.If I have to do that I will probably just keep it stock.The reason they said the 04 dropped valves from the boost increase is from the increase in temp.For what it is worth my ski has 115 hours.
10-06-2009, 09:00 PM #5
corrosion may have something to do with it.
If your timing is right, you can get a 06+ head at a good price then sell your head. Weve looked into it and it ends up being cheaper than changing the valves based on everything you have to buy to do the job.
If you want the performance, the ferrera valves are a proven lightweight valve and Jerry sells them in his store.
10-06-2009, 09:06 PM #6Originally Posted by sylvan
Whatever you decide to do if you put a used 06 or newer head on your ski do yourself a favor and spend a few extra dollars and have a valve job done on it.
10-07-2009, 03:19 AM #7
10-07-2009, 07:15 AM #8
The valve problem in the 04-05 valves is not as big of a percent as we would think. I have owned about 10 04-05 boats and all well over 100 hours and never one problem.
The problem is when the boat is run on the ragged edge and the valves heat up and get week. Also when it is not propperly taken care of and the valves get rust on them and pit. this makes them week.
How many ferrea valves and 06 up valves have you heard break here lately? A few of them! Is it because they are bad or not propper care was taken to inssure there realiabilty?
10-07-2009, 08:20 AM #9
They break for several reasons
04-05 exhaust valves are known to be weak. This is why Sea Doo upgraded them in 06
Valves break because the skis is run lean, the exhaust valves heat up and bind in the guides and snap.
They also break if someone leaves their ski sitting up for long periods and the valve stems rust in the guide and bind.
Combine these two reasons with the weaker 04-05 valves and you run into problems.
Others like Jammer and Water4fire and even myself have never had a problem with the 04-05 valves. I always was careful to monitor my air/fuel ratio and my ski never sat up.
10-07-2009, 08:30 AM #10
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