Results 1 to 4 of 4
Thread: Potential Project 1998 GP800
-
06-09-2015, 08:35 PM #1
- Join Date
- Dec 2014
- Posts
- 32
- +1
- 1
Potential Project 1998 GP800
Hi Guy's !
I am considering purchasing a 1998 Gp800 with motor problems. The owner said it has 81 hours and has now loss compression. He pulled the head and this is the pic he sent me.
I am looking for some advice on what may have caused it and if the bottom would still be usable . If its just a top end job the price seems decent at $1000. This includes the ski and trailer. Is this a power valve motor ?
Looking for input.
Love the forum! Thanks
-
06-09-2015, 08:36 PM #2
- Join Date
- Dec 2014
- Posts
- 32
- +1
- 1
The owner said the lower piston is missing material where it appears to be flat.
-
06-09-2015, 09:49 PM #3
- Join Date
- Jun 2014
- Posts
- 47
- +1
- 4
the top piston looks like it's missing some material on the left side by the arrow. also looks like it's a powervalve motor.
-
06-10-2015, 04:38 PM #4
Yes, 800 is a powervalve motor and also not all that common in the GP platform. A very fun ski when running properly. For that kind of money it will need to be mint condition. I would say $800 tops. It's easy to sink $1500 into a proper rebuild of that engine.
Thread Information
Users Browsing this Thread
There are currently 1 users browsing this thread. (0 members and 1 guests)
Similar Threads
-
Project 1998 GP800
By stanleydan in forum Yamaha Projects & Build ThreadsReplies: 0Last Post: 07-08-2015, 04:45 PM -
FS 1998 gp800 gauge
By nick34 in forum Yamaha ClassifiedsReplies: 1Last Post: 01-21-2010, 08:18 PM -
1998 GP800 - Porpoising/Trim Tab Kit??? Which kit
By jchale in forum Yamaha Old School SkisReplies: 38Last Post: 04-24-2009, 02:11 PM -
1998 GP800 Gauge Compatibility
By gomizzou in forum Yamaha How To & FAQsReplies: 3Last Post: 04-09-2008, 08:57 AM -
1998 GP800/GP1200 Carb Rebuild
By DTV in forum Yamaha Old School SkisReplies: 7Last Post: 06-29-2007, 12:32 AM
The best I could do was to get 2 bolts started. Maybe with some machine...
Riva ride plate FX holes not...