Thread: Ferrea valve upgrade
11-18-2010, 06:59 PM #1
Ferrea valve upgrade
Can I use Ferrea valves with Riva retainers and standard springs?? The workhop told me there was a 10 pound seat pressure drop when using this combination.
I am not looking for high RPM, maybe 8400 one day. Just doing this for reliabilty while I have the head off.
Any info would greatly appreciated
11-18-2010, 09:27 PM #2
- Join Date
- Dec 2006
- Crest Hill, IL
You're good to go...
I use Ferrea valves, slightly used 06 stock springs, and Les Cooke retainers...Thats a decent combo good to 8800ish, but me staying stock ECU...
11-18-2010, 09:52 PM #3
11-19-2010, 12:41 AM #4
11-19-2010, 06:31 AM #5
I have to disagree on this one,it's like playing with fire running at those high rpm's without the light weight valves.
Read the thread:http://www.greenhulk.net/forums/show...ight=rotax+ecu
11-19-2010, 08:02 AM #6
11-19-2010, 09:57 AM #7
The skis that I know that are doing this have not had any issues at all that im aware of and they have 50 hours or more on these setups. Not saying it's ideal but just that it appears to be working well.
11-19-2010, 01:31 PM #8
Is this on flat water?
In heavy chop this might give problems,i was thinking of running rotax 8800 ecu,with only the Riva valvetrain upgrade,but after reading a lot i just dont want to take the risk.
Now i have the rotax 8600 ecu,i was thinking of upgrading,but i dont want to pull the head off.
But i believe that some are running without any issues.
But then again,some had troubles also.
11-19-2010, 02:06 PM #9
Yes, flat water but also chop at times.
11-19-2010, 02:42 PM #10
- Join Date
- Oct 2010
I would have to agree with the others on this Ocman. 9200+ rpm on stock valves and Riva valve train upgrade is begging for trouble. It is not a matter of "if" but "when" will it blow up.
Users Browsing this Thread
There are currently 1 users browsing this thread. (0 members and 1 guests)
By bigdeez in forum 4-Tec PerformanceReplies: 1Last Post: 03-18-2008, 07:15 AM
By MONKEY in forum 4-Tec PerformanceReplies: 11Last Post: 01-03-2008, 09:18 AM
By hydrojunkie in forum 4-Tec PerformanceReplies: 13Last Post: 08-03-2007, 10:35 AM
By edvazquez in forum Sea Doo Open DiscussionReplies: 3Last Post: 07-17-2007, 09:36 PM
By watermedic in forum 4-Tec PerformanceReplies: 1Last Post: 03-18-2007, 02:15 AM