F3 800 12,000 km valve check service - MVAgusta.net
 3Likes
  • 1 Post By esq'z me
  • 1 Post By falcn
  • 1 Post By Moriwaki
 
LinkBack Thread Tools Display Modes
post #1 of 9 (permalink) Old 11-14-2018, 11:29 AM Thread Starter
New Member
 
thealeph's Avatar
 
Join Date: Oct 2018
Location: Johannesburg
Posts: 33
New Site Garage
F3 800 12,000 km valve check service

Just did the 12,000km service on my 2013 F3 800.I ride to work every day so I guess the results should be expected.The Exhaust valves where pretty good but the intakes are tight ! Must be all the dirty air ...

Range in the manual calls for inlets to be between 0.15 & .24 .Cylinder 1 & 3 both have a valve thats right on the limit(.15). I've buttoned her back up for now but dont intend on leaving them that tight.
Has anyone ever attempted to shave down shims with some fine sand paper ? I'm not sure where else I could find shims in this country.

Also the plugs that I pulled out were the Iridium plugs. Do the F3's come stock from the factory with iridium plugs ?

Last edited by thealeph; 11-14-2018 at 12:20 PM.
thealeph is offline  
Sponsored Links
Advertisement
 
post #2 of 9 (permalink) Old 11-15-2018, 06:05 AM
Old Wing Nut
 
esq'z me's Avatar
 
Join Date: Aug 2007
Location: Marietta, GA
Posts: 17,944
Send a message via Skype™ to esq'z me
Can't speak for the standard plugs, although most manufacturers are now using iridium as standard equipment.

I can speak about shims...you can't "shave" them.

The good news is the shims are a size (diameter) found in other more popular brands (think Japanese). I am not sure what size the 3 cylinder bikes use, but a bit of research will reveal all.
thealeph likes this.

I used to be fast....now I just dream about it.
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

'08 910R (Gina), '04 F4 SPR #275 Track Bike (Lola), YSR50 (The Rabbit), '71 CB100 (Lil' Red), '75 RD350C (Orange Bird) restoration project, 2015 Indian Chieftain (Rita) my "low-n-slow", '70 Suzuki F50 (Baby Blue), 2018 Suzuki GSX-S750L8 (Susie Q)
esq'z me is online now  
post #3 of 9 (permalink) Old 11-15-2018, 01:29 PM Thread Starter
New Member
 
thealeph's Avatar
 
Join Date: Oct 2018
Location: Johannesburg
Posts: 33
New Site Garage
I have seen the threads mentioning 7.48mm diameter shims for the F4 but nothing that points towards the F3's having the same size shims.
thealeph is offline  
Sponsored Links
Advertisement
 
post #4 of 9 (permalink) Old 11-15-2018, 02:30 PM
Established Member
 
falcn's Avatar
 
Join Date: Apr 2018
Location: Los Altos Hills, CA
Posts: 167
New Site Garage
I have shaved down many a shim using sandpaper and a flat steel or glass surface. The key is to sand in a figure 8 and spin the shim in your grip every couple of 8s to keep the surface as flat as possible.
Go slow and check often.

We used 200 and 400 grit in the past. Wet with WD40 or oil to suspend the particles.
thealeph likes this.

2010 Brutale 990R - 1994 Elefant 900 - 2006 KTM 450EXC Street Legal
falcn is offline  
post #5 of 9 (permalink) Old 11-15-2018, 04:32 PM
New Member
 
Moriwaki's Avatar
 
Join Date: Jan 2016
Location: Netherlands
Posts: 48
New Site Garage
I have a 2013 F3 800 aswell and did check clearance three times so far.

Shim dimensions:
Diameter = 7.48mm
Thickness = 1.65-2.15mm Do not use shims <1,60mm !! (like stated in manual)

Shims are the same as in Japanese bikes, f.e. CBR600RR
Easy to get in any dealership so 'shaving' them is not my advice...

2013 F3 800 (track only)

The older you get, the faster you was
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Moriwaki is offline  
The Following User Says Thank You to Moriwaki For This Useful Post:
post #6 of 9 (permalink) Old 11-15-2018, 06:09 PM
Established Member
 
falcn's Avatar
 
Join Date: Apr 2018
Location: Los Altos Hills, CA
Posts: 167
New Site Garage
Sometimes you need a size between the sizes available to obtain the desired clearance.

There is nothing wrong with sanding down a shim. Manually sanding is not going to change the hardness of a shim.

You can even do it using a small lathe for more precision if desired. Motorsports mechanics have been grinding and shaving shims a long time.

2010 Brutale 990R - 1994 Elefant 900 - 2006 KTM 450EXC Street Legal
falcn is offline  
post #7 of 9 (permalink) Old 11-16-2018, 04:00 AM Thread Starter
New Member
 
thealeph's Avatar
 
Join Date: Oct 2018
Location: Johannesburg
Posts: 33
New Site Garage
Cheers Moriwaki,

Thanks for confirming the shim diameter!
thealeph is offline  
post #8 of 9 (permalink) Old 11-16-2018, 04:32 PM
New Member
 
Moriwaki's Avatar
 
Join Date: Jan 2016
Location: Netherlands
Posts: 48
New Site Garage
Quote:
Originally Posted by falcn View Post
Sometimes you need a size between the sizes available to obtain the desired clearance.

There is nothing wrong with sanding down a shim. Manually sanding is not going to change the hardness of a shim.

You can even do it using a small lathe for more precision if desired. Motorsports mechanics have been grinding and shaving shims a long time.
If you are between sizes just go for more clearance unless you racing for a living ...

Manually sanding or even a small lathe will not guarantee parallel surfaces on your shim.
If you really mess it up it can give extra lateral forces on the buckets.

A flatbed grinder is the only machine I would trust and used for this (in the past).
esq'z me likes this.

2013 F3 800 (track only)

The older you get, the faster you was
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Moriwaki is offline  
post #9 of 9 (permalink) Old 11-16-2018, 06:50 PM
New Member
 
Join Date: Apr 2016
Location: Arrowtown, New Zealand
Posts: 18
New Site Garage
7.48mm Shim kits are available cheaply, should be plenty on ebay, do not be tempted to sand your shims, the F3 valve train is fragile enough without tempting fate
rodprice is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to use all of the features of the MVAgusta.net site, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome