Griso Suspension settings thread!

[dgreenwood]

New Griso owner here. Last week I bought a brand new '07 from Moto International; trading in my '04 Stone. Thanks to Todd, I was able to get my Stone suspension set up pretty well by installing YSS shocks and adjusting sag, front and back. I have no experience with rebound or compression adjustments on the front since Preload was all that was adjustable (using spacers). I was able to dial in rebound damping in the rear with the YSS shocks.

I've read the suspension topics here and learned that the stock settings are likely pretty bad and that the first step is sag. My problem is that I want to ride this weekend and won't have the ability to adjust for proper sag before that (I don't have anyone to help or the ability to lift the wheels off the ground for measurement). I definitely plan to do this right when I have time, I'm just trying to figure out if there is anything I can do to make this weekend more enjoyable without going through the full and proper measurements.

I found some rebound and compression settings on this site. Is it advisable for me to adjust to these without doing sag first, with the understanding that I'll start over from scratch and do it right eventually? Or am I better off riding stock until I have the ability to do it right?

My stats:
I'm about 200lbs fully geared
I've adjusted my tire pressure from 33/36 to 36/40 after reading that the service manual recommendations are likely low.

These are the settings I found here and am contemplating using before I leave this weekend:
Front
compression: 1/4 T (stock: 1 T)
rebound: 2 1/4 T (stock: 1.5 T)
preload: 5th mark (stock: 4th)

Rear
compression: 1/4 T (stock: 1.5 T)
rebound: 40 clicks (stock: 17)

Any thoughts you can offer that may improve my weekend would be greatly appreciated.

Edit: Clarified that I have experience with adjusting rebound damping in the back but not front.

[GuzziHero]

I'm happy with the settings suggested by GuzziJon, the ones you have there.

I never truly adjusted my sag, never got 2 people at once in order to set it, but tbh I LOVE the bike as is.

I would also drop the forks 10mm through the yokes, I am recommending this to everyone who wants a sharper turning bike.

At some stage, some of us Midlands (UK) Griso owners need to get together for a sag setting party!

[GuzziMoto]

Setting the sag is important as it determines ride height. Adjusting the dampening without setting sag won't hurt anything, but it may not help as much as it could without setting sag correctly. Also, what works best with proper sag may be too soft on compression without proper sag.
Stock my Griso had way too much compression dampening front and rear and sagged too much.. I don't understand why people add more.... But if it works for you then great. Mine was way too stiff and I softened it up and added preload for a smoother ride.
What ever you do, keep track of the changes you make and have at it.

[Ad B]

Please put your suspension settings of your Griso AND your personal weight in this topic.
Or better, the aprox. average weight you put on your Griso most of the time. (1 person or 2... or 2 person + lugage)
For other Guzzi types, please make in it in your "own chapter"... (or copy...)
Not to many comments or recomandations please, just numbers.
Everbody can learn from our settings (or try to...)

STANDARD SETTINGS:
Front:
hight: 4 stripes above top plate (without orange cup).
sag: ?? mm (springtension, preload 4 -5 rings)
compression: 1 turn
rebound: 1.5 turn

Rear:
sag: ?? mm, spring lenght 161 mm
compression: 1.5 turn
rebound: 17 clicks

My settings, on recommendations by Mile Pajic, a very experienced motorbikeracer (from 125cc till endurance).
Standard components.

Front:
hight: 4 stripes above top plate (without orange cup).
sag: 35 mm (springtension, preload 5.5 ring)
compression: 1 turn
rebound: 1.25 turn

Rear:
sag: 37 mm
compression: 0.25 turn
rebound: 42 clicks

my weight is 72 kg (158.7 lb)
Most of time solo use

Ad B

[GT-Rx]

Topic combined and pinned to the top. For "heavier" Griso owners, also see; http://forum.guzzitech.com/forum/163/2610.html

[hugzy]

Which screw is the compression screw and which the rebound on the front forks and which on the rear shock ?
never really known for sure ?

[GT-Rx]

hugzy
Have a look in the owners hand book it is clearly outlined there including pictures.
If you haven't got one download one on the Downloads tab above.

[gulveal]

Here's my current settings:

Front:

Protusion: 6 rings;
Preload: 4 rings;
Compression: 1.5 turns out;
Rebound: 0 turns out.

Rear:

Preload +4.5 turns from stock;
Compression: 2.5 turns out;
Rebound: 10 click out.

My Weight: 100Kg (220lb).
Solo use.

Regards,
David

[gvw]

Marzocchi RAC USD 43dia -Use and Maintenance Instruction Manual

Griso_Marzocchi_RAC_USD43dia2010.zip

Marzocchi Forks Manual Griso

(1.79 MiB) Downloaded 413 times

(compressed with 7-zip)

Section 5 has the adjustment instructions.

Adjusted my compression and rebound to the 110kg person settings - Double.D. Was surprised how easy it was - should have done it a while ago. Most noticeable was how much it smoothed out the ride - well worth it. Will have a go at sag this weekend when I can find a few more hands.

The rear shock is a Boge/Sachs unit (??) but in a quick search, did not find the user manual, anyone else have any better google skills? Looks to come from Sachs Automotive Italia S.p.A. but did not find the right model.

[hugzy]

hugzy
Have a look in the owners hand book it is clearly outlined there including pictures.
If you haven't got one download one on the Downloads tab above.

Hi Mark, My owners manual only shows the rear shock and it tells you how the front fork comp' and rebound should be set but not which screw is what but I'll download the manual on here and have a look. Cheers.