guzziriders.org - moto guzzi forum Homepage
Forum Home Forum Home > Technical > Big Block Tonti
  New Posts New Posts RSS Feed - VHB30 slide wear level
  FAQ FAQ  Forum Search   Events   Register Register  Login Login

VHB30 slide wear level

 Post Reply Post Reply
Author
Message
FlyingTiger View Drop Down
Falcone
Falcone


Joined: 22 Sep 2018
Location: BRISTOL
Status: Offline
Points: 81
Post Options Post Options   Thanks (0) Thanks(0)   Quote FlyingTiger Quote  Post ReplyReply Direct Link To This Post Topic: VHB30 slide wear level
    Posted: 08 Jan 2019 at 12:30
Gents,
 
After stripping and cleaning mine, I noticed the square slides are quite a rattle fit.  With the exception of a bike I used to race which had a square slide and was a perfect fit I have only ever had good fitting round slides or injection on bikes (or were my Blackbirds square??? Dunno...anyway), I realise the proof is in the riding as to whether they are acceptable on a personal basis, but are they normally a bit of a rattle fit anyway?
 
What are the typical symptom of slides that are too worn please?
 
Mine seemed to run nicely before the strip with the odd pop on warm up but having been hardly used for 16 years thats not surprising.
 
All feedback gratefully received!
 
Regards
 
Mark
Mark Serj
Back to Top
Glawster View Drop Down
Senior Member
Senior Member


Joined: 14 Sep 2015
Location: Cheltenham
Status: Offline
Points: 429
Post Options Post Options   Thanks (0) Thanks(0)   Quote Glawster Quote  Post ReplyReply Direct Link To This Post Posted: 08 Jan 2019 at 20:17
Mark
Are the slides loose with the tops and springs in place?  The reason I ask is that the springs on VHBs push the flat slide "backwards" against the body of the carb and seem to take up the slack so to speak.  If you need your VHBs cleaning and refurbishing I've got another recommendation for you.  Ian Soames of Coln Blast Cleaning is a top guy with a unit in Gloucester.  He's just done my V7 Sport VHBs.  Vapour Blasted, ultrasonic clean and rebuild with new seals etc £70 per carb.
Cheers, Derek

https://colnblastcleaning.co.uk/

DSC_0865 by Derek Wardell, on Flickr
1979 Guzzi T3 California
1973 Guzzi V7 Sport
1955 Guzzi Falcone Sport
2015 Triumph Tiger 800
Back to Top
Chris A View Drop Down
Falcone
Falcone


Joined: 15 Dec 2018
Location: France
Status: Offline
Points: 17
Post Options Post Options   Thanks (0) Thanks(0)   Quote Chris A Quote  Post ReplyReply Direct Link To This Post Posted: 08 Jan 2019 at 21:38
For me it would be when the carbs became difficult to balance or if they go out quickly.
Back to Top
FlyingTiger View Drop Down
Falcone
Falcone


Joined: 22 Sep 2018
Location: BRISTOL
Status: Offline
Points: 81
Post Options Post Options   Thanks (0) Thanks(0)   Quote FlyingTiger Quote  Post ReplyReply Direct Link To This Post Posted: 09 Jan 2019 at 07:10
Hi guys,
 
Thanks for the replies.  I gauged them without the springs / tops in place.  It was just an observation in that I have never hAD A CARB WITH SUCH A RATTLE FIT, YET THERE IS VERY LITTLE VISIBLE SIGN OF WEAR.  I AM SURE THEY WILL APPEAR BETTER WITH THE SPRING IN PLACE THOUGH.  I WILL SEE HOW I GET ON WITH THE ENGINE SET UP ON COMPLETION OF THE BUILD.  I HAVE ULTRASONICALLY CLEANED THEM AND SPRUCED THE EXTERIORS AND REPLACED SEALS / O RINGS ETC SO HOPE ALL WILL BE ok.  Aaah just noticed caps lock is on....oh well its all written word anyway!
 
GOOD CONTACT IN GLOS, THANK YOU
 
BEST REGARDS
 
MARK
Mark Serj
Back to Top
Mike H View Drop Down
Senior Member
Senior Member
Avatar

Joined: 21 May 2014
Location: East Anglia
Status: Offline
Points: 5998
Post Options Post Options   Thanks (0) Thanks(0)   Quote Mike H Quote  Post ReplyReply Direct Link To This Post Posted: 09 Jan 2019 at 17:16
I've worked on several VHB 30's, including brand new ones,  as far as I could see all the slides are deliberately a bit on the loose side; as already said the return spring is angled so that it pushes the slide forwards against the output (engine) side of the carb body; also, intake suction will keep it up against there too. All I ever did with mine is put a smear of grease on the face to limit wear. A couple of old slides had a couple of scratch marks on them but still worked OK.

HTH







Edited by Mike H - 09 Jan 2019 at 17:25
"Chicken nuggets don't dance on a Tuesday."
Back to Top
Ken-Guzzibear View Drop Down
Moderator Group
Moderator Group
Avatar

Joined: 13 May 2014
Location: Sileby Leics
Status: Offline
Points: 5309
Post Options Post Options   Thanks (0) Thanks(0)   Quote Ken-Guzzibear Quote  Post ReplyReply Direct Link To This Post Posted: 09 Jan 2019 at 20:09
Parts for these are now hard to get took mine off to be used if ever it is in a show or sold but for practical every day use the round 30 mm with the triangle shaped pump are way better all parts and jets available Eurocarbs are brilliant the round ones make the bike accelerate a fair bit better too
The Older i Get, The Better I Was
Back to Top
FlyingTiger View Drop Down
Falcone
Falcone


Joined: 22 Sep 2018
Location: BRISTOL
Status: Offline
Points: 81
Post Options Post Options   Thanks (0) Thanks(0)   Quote FlyingTiger Quote  Post ReplyReply Direct Link To This Post Posted: 10 Jan 2019 at 07:20
Food for future thought - thanks chaps
Mark Serj
Back to Top
 Post Reply Post Reply
  Share Topic   

Forum Jump Forum Permissions View Drop Down

Forum Software by Web Wiz Forums® version 12.00
Copyright ©2001-2018 Web Wiz Ltd.

This page was generated in 0.063 seconds.