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Thread: Porpoising Problems, Need help!
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05-27-2008, 04:00 PM #1
- Join Date
- Mar 2008
- Location
- troy michigan
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- 60
Porpoising Problems, Need help!
I just took my 2001 GP1200R out for the first time this season. since last year, i got an aftermarket intake grate, 13/19 solas impeller, performance pump cone, and a RIVA ride plate. Speed results were more than expected as i hit 68-70mph a few times on a stock engine. The only problem was the terrible porpoising even at 40mph. How can i fix this for somewhat cheap. I hear that shimming the trim tabs work. My ski had never porpoised before i put all of these mods on. HOw do i remove the trim tabs to shim them?
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05-27-2008, 04:03 PM #2
What Sponson you running.
If your running the OEM step them that will fix your problems and if that doesn t then i would add washer under the Trim Tabs.
Stepped Sponons is the way to go.
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05-27-2008, 04:11 PM #3
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05-27-2008, 05:39 PM #4
step the sponsons
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05-27-2008, 06:50 PM #5
- Join Date
- Mar 2008
- Location
- troy michigan
- Posts
- 60
i have the stock sponsons set all the way up. they arent modded yet. Will stepping them really fix my problems? when i remove the trim tabs, do i use a wedge or somethin to break free the silicone?
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05-27-2008, 08:45 PM #6
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05-27-2008, 10:55 PM #7
You answered you own problem leave the tabs alone for now Step them sponsons
Do a search for stepping sponson the best mod youy can do on a GPR
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05-27-2008, 11:27 PM #8
- Join Date
- Oct 2006
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- 3,710
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yep step those sponsons and the bounce will go away.
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05-28-2008, 06:30 AM #9
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05-28-2008, 12:03 PM #10
def step the sponsons, its easy. front hole up and back hole down. drill out the center hole so its in the middle and leave the trim tabs alone
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