Exhaust change

Discussions about AS400, AS450, AS500, AS600, AS650, AS650CE
Site Admin
Beiträge: 32
Registriert: Di Jul 05, 2016 7:35 am
Wohnort: Switzerland

Exhaust change

Beitrag von funkydrgonzo » Mi Jul 06, 2016 9:36 am

How often do you change the exhaust valve kit? Aquascooter says that you should change it once a year.

Beiträge: 16
Registriert: Mi Aug 16, 2017 5:08 am

Re: Exhaust change

Beitrag von Chicago_AS600 » Do Aug 31, 2017 1:36 am

The guy that introduced me to an Aquascooter earlier this summer got his in the mid-90s. He said not to bother changing the exhaust valve saying they leak regardless and just rev the engine out of the water to before shutting down. Before hearing this I had already replace the valve in my eBay find 600. I didn't change the valve on the 450 I revived that has been dormant for 30 years. It works fine with the old valve. I suppose it depends a lot on how it's being used. I'm full throttle most of the time and don't leave it in the water when not using.

Hec In Omaha
Beiträge: 33
Registriert: Do Sep 15, 2016 3:14 am
Wohnort: Beaver Lake, Nebraska USA

Re: Exhaust change

Beitrag von Hec In Omaha » Fr Jul 06, 2018 4:59 pm

I am on my second season after replacing the exhaust valves in 3 of my AS600's. So far so good!

If its not broken, then I can't fix it!

Beiträge: 4
Registriert: Mo Jul 09, 2018 8:15 pm
Wohnort: Virgin Islands

Exhaust change

Beitrag von Michaelnep » So Jul 15, 2018 4:37 am


As you had 1290SD as well. would you say with new exhaust and no butterfly valve the engine behavior is comparable? is your GT now as mental as SD?