ADVrider

Go Back   ADVrider > Bikes > Thumpers
User Name
Password
Register Inmates Photos Site Rules Search Today's Posts Mark Forums Read

Reply
 
Thread Tools Search this Thread Display Modes
Old 02-20-2013, 04:32 AM   #14101
robmoto
Beastly Adventurer
 
robmoto's Avatar
 
Joined: Feb 2009
Location: Australia
Oddometer: 3,800
__________________
I ride alone and not a KTM in sight .
Menace Racing supported by Robmoto Industries
robmoto is offline   Reply With Quote
Old 02-20-2013, 04:33 AM   #14102
robmoto
Beastly Adventurer
 
robmoto's Avatar
 
Joined: Feb 2009
Location: Australia
Oddometer: 3,800
__________________
I ride alone and not a KTM in sight .
Menace Racing supported by Robmoto Industries
robmoto is offline   Reply With Quote
Old 02-20-2013, 04:34 AM   #14103
robmoto
Beastly Adventurer
 
robmoto's Avatar
 
Joined: Feb 2009
Location: Australia
Oddometer: 3,800
__________________
I ride alone and not a KTM in sight .
Menace Racing supported by Robmoto Industries
robmoto is offline   Reply With Quote
Old 02-20-2013, 06:58 AM   #14104
Ladder106
It's a short cut, really
 
Ladder106's Avatar
 
Joined: Jan 2005
Location: Davis, CA
Oddometer: 4,877
Lars,

You certainly have some sort of magic. You've gotten more photos out of Rob in one go than his entire total since he's been on the thread. Well done.

Rob, thanks for the photos.

Refresh my memory on one point. On your Green/Yellow bike you are using the CR carbs from Stefan, correct?

Did you ever try that airbox with the standard CV carbs?

The photos illustrate just how many items Suzuki managed to cram into a very small space.
Ladder106 is offline   Reply With Quote
Old 02-20-2013, 07:22 AM   #14105
Resi
Gnarly Adventurer
 
Resi's Avatar
 
Joined: Jul 2011
Location: Nassau Area
Oddometer: 209
Quote:
Originally Posted by Ladder106 View Post
Lars,

You certainly have some sort of magic.

Resi is offline   Reply With Quote
Old 02-20-2013, 04:38 PM   #14106
robmoto
Beastly Adventurer
 
robmoto's Avatar
 
Joined: Feb 2009
Location: Australia
Oddometer: 3,800
Ray the yellow bike I now am using tm 36 mikuni pumpers.
Before these I used the BST 33,s and no air box at all at that stage the bike was a 750 I lost a little bottom end but gained a bit on the top end as was running a open pro duo and large header pipe the bike went quite well and earnt the name the yella terra .
__________________
I ride alone and not a KTM in sight .
Menace Racing supported by Robmoto Industries

robmoto screwed with this post 02-20-2013 at 04:45 PM
robmoto is offline   Reply With Quote
Old 02-20-2013, 04:58 PM   #14107
robmoto
Beastly Adventurer
 
robmoto's Avatar
 
Joined: Feb 2009
Location: Australia
Oddometer: 3,800
My belief is to keep the volume between the carbs and the air cleaner the same as the volume and bigger than the bore and stroke ,I used a DR 650 foam filter but ended up taking off the filter skin.
This filter must be be similiar to the air intake of a standard paper job to keep the over all vacume the same, more air at the top end revs won,t bother the 33,s Early in the piece HRT ran a 650 filter in a air box with the whole side cut out so I thought I would try that as a starting point thingy.
__________________
I ride alone and not a KTM in sight .
Menace Racing supported by Robmoto Industries
robmoto is offline   Reply With Quote
Old 02-20-2013, 05:05 PM   #14108
robmoto
Beastly Adventurer
 
robmoto's Avatar
 
Joined: Feb 2009
Location: Australia
Oddometer: 3,800
Ray if you at at page 940 one of the pic,s I just posted of the blue bike you will see the air box and filter cage but no paper , I made a foam filter to fit inside works ok and not looking for massave amounts of performance I think it is as good as standard job but at least I don,t have to remove a tank to get it out and clean it very versatile .
__________________
I ride alone and not a KTM in sight .
Menace Racing supported by Robmoto Industries
robmoto is offline   Reply With Quote
Old 02-21-2013, 11:52 AM   #14109
aapo
aapo
 
aapo's Avatar
 
Joined: Aug 2008
Location: Finland
Oddometer: 153
I'll have new valves (all four) top end gasket set and new piston in few weeks. Piston is 2nd oversize (100) with rings from hessler (like other parts too).

Valves will be third set (when counting originals too) in this engine. Shlould i change valve guides (or how they are called) too? Is there a way to check it easily? i need to take it some shop anyway with cylinder, but it woul be good to have all parts ready.

I start to regret i sold the cylinder head from donor 800 engine

Rockers and cam have been changed some 40 - 50 000 kms ago, seemed not new but ok.

-aapo
__________________
-aapo
DR 750S 1989

http://picasaweb.google.com/aapo.saari

aapo screwed with this post 02-21-2013 at 11:53 AM Reason: typo
aapo is offline   Reply With Quote
Old 02-21-2013, 12:09 PM   #14110
jabroka
Gnarly Adventurer
 
jabroka's Avatar
 
Joined: Nov 2008
Location: Buenos Aires, Argentina
Oddometer: 338
great pics Rob!!

a few of mine with new additions.. quick throttle & aluminum skid plate













__________________
1993 suzuki GSXR-R
2007 BMW G650X CHALLENGE
jabroka is offline   Reply With Quote
Old 02-21-2013, 12:35 PM   #14111
spen
on my arse
 
spen's Avatar
 
Joined: Sep 2009
Location: sunny ireland
Oddometer: 333
Just putting up a quick wanted AD i need the two top 19mm nuts that are on the top of the forks (sr41 sr42 ) mine have been badly rounded ,So if you have a scrap set of forks I"ll buy the top nuts from you .Thanks If someone needs another part we could do a swap !! i have some spares

spen screwed with this post 02-21-2013 at 03:40 PM
spen is offline   Reply With Quote
Old 02-21-2013, 09:21 PM   #14112
robmoto
Beastly Adventurer
 
robmoto's Avatar
 
Joined: Feb 2009
Location: Australia
Oddometer: 3,800
Quote:
Originally Posted by aapo View Post
I'll have new valves (all four) top end gasket set and new piston in few weeks. Piston is 2nd oversize (100) with rings from hessler (like other parts too).

Valves will be third set (when counting originals too) in this engine. Shlould i change valve guides (or how they are called) too? Is there a way to check it easily? i need to take it some shop anyway with cylinder, but it woul be good to have all parts ready.

I start to regret i sold the cylinder head from donor 800 engine

Rockers and cam have been changed some 40 - 50 000 kms ago, seemed not new but ok.

-aapo
Just a little tip for you , only use suzuki valve stem seals, the after market ones go hard in no time.
3 sets of valves why , maybe tappet settings could be a little tight, and or runnung a little lean, have a look at the colour of the carbon on the valves may help you determin whats going on.
__________________
I ride alone and not a KTM in sight .
Menace Racing supported by Robmoto Industries
robmoto is offline   Reply With Quote
Old 02-21-2013, 09:26 PM   #14113
robmoto
Beastly Adventurer
 
robmoto's Avatar
 
Joined: Feb 2009
Location: Australia
Oddometer: 3,800
Jabroka , long time no here since the trip to suthh aaafrica, Its good to have a bit of use full bling , I still like that muffler with the colour co/ordination .
__________________
I ride alone and not a KTM in sight .
Menace Racing supported by Robmoto Industries
robmoto is offline   Reply With Quote
Old 02-22-2013, 12:31 AM   #14114
aapo
aapo
 
aapo's Avatar
 
Joined: Aug 2008
Location: Finland
Oddometer: 153
Quote:
Originally Posted by robmoto View Post
Just a little tip for you , only use suzuki valve stem seals, the after market ones go hard in no time.
3 sets of valves why , maybe tappet settings could be a little tight, and or runnung a little lean, have a look at the colour of the carbon on the valves may help you determin whats going on.
I've used only suzuki valve stem seals and orginal mikuni parts in carbs, learned that hard way...

original valves were replaced when there was some 60 000km in clock, also pistone was replaced by first versize 050 then. I rebuild engine bottom at 85 000 km (if rebember rigt) the top end was like new.

No I have damaged cylinder (heavy oil consumption) and damage in valves. And yes, there were some carburetor problems and some serious overheating while offroading... i was riding too lean.

So i think your dianosis is right.

I'm just wondering how long these valve stems last? Seals for those are easy to change but stem itself reguires some professional help.
__________________
-aapo
DR 750S 1989

http://picasaweb.google.com/aapo.saari
aapo is offline   Reply With Quote
Old 02-22-2013, 01:35 AM   #14115
robmoto
Beastly Adventurer
 
robmoto's Avatar
 
Joined: Feb 2009
Location: Australia
Oddometer: 3,800
Appo ,when I bought my orange bike it was in very poor condition but still was rideable the piston would knock something terrible untill it warmed up I am just giving you an Idea how things were when I got it.
Now it looked like to me the head had never been of it, I did replace the exaust valves only and new stem seals on all 4 valves.
My point is this bike is running with no problems because of other work I did to the motor the valve guides have never been replaced and it has done 142k
If you can feel play in the valve there probably stuffed.
__________________
I ride alone and not a KTM in sight .
Menace Racing supported by Robmoto Industries
robmoto is offline   Reply With Quote
Reply

Share

Thread Tools Search this Thread
Search this Thread:

.
Display Modes

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

Forum Jump


Times are GMT -7.   It's 07:52 AM.


Powered by vBulletin® Version 3.8.5
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Copyright ADVrider 2011-2014