Porpoising Problems, Need help!

[ksako270]

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?

[Mik72e]

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.

[RDH]

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?

the tabs are just 4 bolts....

you should get a manual, it will have all these little things in it...

[WFO]

step the sponsons

[ksako270]

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?

[VOODOO]

Step The Sponsons

[Mik72e]

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

[izz0]

yep step those sponsons and the bounce will go away.

[Autosport]

from another Aussie

STEP THE SPONSONS

[fenn]

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