Author Topic: The Guzzi Virus Spreads: V50 II  (Read 417 times)

Online DoubleGuzzi

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The Guzzi Virus Spreads: V50 II
« on: June 06, 2025, 05:44:13 PM »
Well I finally grabbed a V50; not the version that I was really looking for (nearly bought a III NATO with ignition issues) and I paid over what I was looking to spend.  :violent1:
It's a bit of a 'bucket' and as usual with bikes, general photos tend to make things look better than reality. The engine paint can't make up its mind whether to hang in there and the frame is bare in quite a few places. The silver is losing the fight against naked alloy, when it comes to the wheels. A large part of the front mudguard paint has departed and the paint has numerous worn areas - mostly left sidepanel.
Forewarned, a carb is not holding onto the fuel and is making pretty colours on the damp driveway. (I gave the bike a reasonably thorough wash before anything else.) I have had it fired up on one cylinder for a short period, though the "choke" enrichment lever wont stay in the start position.
It was sold as a restoration project.

My missus seems bemused that I'm looking to replace the Breva with this. :thewife: Time will tell.

Later in the day, I hauled out the carbs (hope I can squeeze 'em in the same way!). They're kinda grotty. I've got the left carb ready to go back on, having polished up the float needle and seat, along with a polish of the pivot pin and a general clean of the jets etc. I'm half-way doing the right one, which was even more grotty.
Dunno what's going on with the enrichment lever: there's no play in the cables, that I can tell, and the adjusters are backed off to the max. I'll try stripping the body where the lever is and see if I spot anything. I polished the brass plungers for good measure and noted the rubber stoppers seem intact with indents from being seated.
At least these carbs are simpler than the Monster 600 ones, which I stripped down numerous times.

Some soul added in the ubiquitous rubber extension to the leading edge of the rear mudguard. As to when this was done.. The rear of the engine is worse than what the Breva was and dirt, mud, whatever is caked on back there! I just hope that the clutch pivot pin isn't seized like on the Breva!  :shocked:

As is frequently the case. the exhaust header pipes are a mess. Far too may people just don't bother taking care of anything other than the bodywork: the bike is washed down like it's a four wheeler. "Aww, it's only an exhaust/centrestand/wheel hub"

It's got new Dunlop K82 tyres (weird things) and new battery - that's the good news. Being a "Historic" class, there's an exemption for road tax and MOT, so that saves some cost. I may voluntarily take it for an MOT however, for 'peace of mind", depending on how much I need to spend to get the bike roadworthy.


« Last Edit: June 06, 2025, 06:01:29 PM by DoubleGuzzi »
Nearly natural progression.. SS50, Z200, Z250B, Z400J, (H100), GT750, K100, ZR1100, 900 Trident, 955 Sprint ST, (ZR550, M600), 900 ST, (B750), V7III CS, (V50II).

Offline guzzisteve

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Re: The Guzzi Virus Spreads: V50 II
« Reply #1 on: June 06, 2025, 07:04:37 PM »
I had a Red III from 83, traded a Fiat Spider for it w/blown hd gskt & a short block just rebuilt. 2yrs before I had traded my 80 SP for the Spider. My friend wanted my bike real bad & had just did paint & top on Spider. His wife quit riding and I got her 1200mi V50. I sold it for new money. Was very sweet bike, Euro carb set up ran great.

Yours looks normal for V50's
"Pray through Carlo & your bike shall be healed"
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Online DoubleGuzzi

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Re: The Guzzi Virus Spreads: V50 II
« Reply #2 on: June 06, 2025, 08:10:34 PM »
My Z200 (of similar era) had a single front disc brake, operated by cable (just like some modern day cycles)! This V50 front brake feels less powerful, barely stops the wheel and has zero feel. It's like the brake pads are made of wood, even with the benefit of braided lines. Some investigation required, with perhaps a change of pad material; organic GG for feel or sintered for 'grip'.. Hmm. At least the linked brakes seem like they may slow/stop the bike. Not an unheard of situation, from what I've seen on forums. Noticed this evening that the rust was already forming on the discs, after washing it earlier. Yup, it's a Guzzi alright - just how I remembered them, back in the day.   :grin:

I hoisted up the gaiters and the stanchions look good, with no signs of oil - if there's any in them. Was gonna use the dregs of fork oil from doing the V7III to freshen them up. Yay, got a use for the ~200ml that was left in the bottle: does 70ml/leg of fluid really do much in the way of damping? (Semi-rhetorical.)

Nearly natural progression.. SS50, Z200, Z250B, Z400J, (H100), GT750, K100, ZR1100, 900 Trident, 955 Sprint ST, (ZR550, M600), 900 ST, (B750), V7III CS, (V50II).

Online DoubleGuzzi

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Re: The Guzzi Virus Spreads: V50 II
« Reply #3 on: June 08, 2025, 08:39:29 PM »
The saga continues..
The right carb was seriously gunged up, with a totally blocked pilot jet, restricted emulsion tube, and varnish encrusted enrichment tube. No wonder it wasn't firing up on that cylinder. Poked out and cleaned up, the carbs went back in. It took a bit of wiggling & juggling, with some Vaseline on the rubbers (ooer, missus) for good measure. I re-angled the fuel inlets and 'choke' feeds, for less sharp entry points. Now, at least there is some slight play in the choke cables. I had carefully used a file, to level off the plastic choke lever and now it stays open long enough to warm the bike up.
Having drained out the remaining urine coloured fuel, I reconnected the crossover fuel lines, which the PO had already replaced recently. In went a pint or so of petrol and I turned the taps to reserve. Fuel pissed out under the bike - drat! Och well, that'll kill some weeds on the driveway! Hmm, a bit of feeling around seems to have pinpointed the leak to the crossover pipe, somewhere between the metal junction and left carb banjo. I hauled the thing out and after messing about with hose clips etc., directly connected each carb individually to each tap, as a test. No leaks - hurrah!

Couldn't contain the excitement, so cutting down on some minor intermediate steps (check tickover etc.), I suited up and went for a 5 miles rural jaunt in the local countryside. The bike pulled strongly up hill, with no hiccups or flat spots. There's no hunting on a steady throttle and there is at least some urgency to acceleration. No spits or backfires on the overrun and pulls cleanly from ~2000rpm. What a result!
Handling is interesting, though I need to check tyre pressures and the front end feels 'loose' - a later static check didn't show up anything untoward
The front brake, as previously noted, is virtually non-existent though thankfully the linked ones are fine, so I ventured as high as an indicated 65mph, briefly.
I managed to gain some free play in the clutch cable, whilst trundling along. The take up point was about 1/2" from the handlebar!! Zero play - oops, I should've noticed that beforehand. I do hope that the pushrod ain't cooked and the bearing hasn't collapsed.

Back in the driveway, I struggled to pull the bike back to the garage. The linked brake discs were kinda toasty - far too much for that short journey. I went inside to change out of my clobber and let the discs cool down. It turns out that there was zero play in the brake rod to master cylinder; likely causing drag of the pads. Not good. Off with the sidepanel, to adjust the rod length and lo & behold there was no split pin on the clevis - yikes! Needless to say that I shortened the rod for some play and used a small R-clip from my limited stash.

All in all, a fairly successful weekend.  :grin:
« Last Edit: June 09, 2025, 07:04:55 AM by DoubleGuzzi »
Nearly natural progression.. SS50, Z200, Z250B, Z400J, (H100), GT750, K100, ZR1100, 900 Trident, 955 Sprint ST, (ZR550, M600), 900 ST, (B750), V7III CS, (V50II).

Offline Tom

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Re: The Guzzi Virus Spreads: V50 II
« Reply #4 on: June 09, 2025, 05:31:04 PM »
Throwing this in for clarification.   :tongue:  Good read.   :thumb:

gro·dy
[ˈɡrōdē]
adjective
US ENGLISH
informal
grody (adjective) · grodier (comparative adjective) · grodiest (superlative adjective)
very unpleasant; disgusting:
"an old man with grody yellow teeth" · "by itself, buttermilk tastes pretty grody" · "think of those 80s pics of everyone in denim—grody to the max!"
From the Deep Deep South out in left field.  There are no stupid questions.  There are however stupid people asking questions.  🤣, this includes me.  😉

Online DoubleGuzzi

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Re: The Guzzi Virus Spreads: V50 II
« Reply #5 on: June 09, 2025, 06:04:27 PM »
..
US ENGLISH
informal
grody (adjective) · grodier (comparative adjective) · grodiest (superlative adjective)
very unpleasant; disgusting:
..
From Wiktionary
Quote
Clipping of grotesque +‎ -y. Piecewise doublet of grody, the American equivalent. Compare Middle English groti, grooti (“slimy, muddy”), from Old English grotiġ (“earthy, dirty”) (modern dialectal English groaty, Scots grotty), which is equivalent to groat +‎ -y.
Guess which version I was using.  :wink:
Nearly natural progression.. SS50, Z200, Z250B, Z400J, (H100), GT750, K100, ZR1100, 900 Trident, 955 Sprint ST, (ZR550, M600), 900 ST, (B750), V7III CS, (V50II).

Offline Tom

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Re: The Guzzi Virus Spreads: V50 II
« Reply #6 on: June 09, 2025, 06:30:27 PM »

 :thumb:   :grin:
From the Deep Deep South out in left field.  There are no stupid questions.  There are however stupid people asking questions.  🤣, this includes me.  😉

Online DoubleGuzzi

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Re: The Guzzi Virus Spreads: V50 II
« Reply #7 on: June 10, 2025, 01:10:43 PM »
Today was an investigation into the ineffective left front brake..

Off with the tank first. That was fun: some eejit had fitted the rubber strap upside down! I removed the pin to allow more flexibility and managed to get the strap off with the help of a long thin screwdriver. On to braking stuff.

There was zero sign of grease around the master cylinder and the clevis pin was seized onto the actuating arm. Removing the indicators relay on the right side of the frame allows access to the 'blind side'. A few squirts of penetrating fluid and some careful whacks back & forth and the clevis was loose again, eventually. Cleaned up, rubbed down and greased the pin went back in.
The brake cable was nicely free in movement, though I did drip in some 3-in-1 oil and removed some very light rusting from the exposed inner cable.
I discovered the main reason for the gummy feeling of the front brake - the lever was seriously gunged up from grease being put in/onto it without removing any old stuff. 10 minutes later, after cleaning and lubing the action was much better.

The PO had replaced the brake pads fairly recently, though hadn't bothered to clean up the securing pin nor the spring clip pins. The latter are kinda worn with steps in their taper but I'll see if cleaning them up and smoothing them has helped. A wipe around with brake cleaner, of the pins, springs, caliper and pads. meant it was time to reattach the front brake.

A static test shows a marked improvement, so It'll be interesting to see how the next test ride goes. Watch this space.

« Last Edit: June 10, 2025, 01:23:18 PM by DoubleGuzzi »
Nearly natural progression.. SS50, Z200, Z250B, Z400J, (H100), GT750, K100, ZR1100, 900 Trident, 955 Sprint ST, (ZR550, M600), 900 ST, (B750), V7III CS, (V50II).

Online DoubleGuzzi

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Re: The Guzzi Virus Spreads: V50 II
« Reply #8 on: June 11, 2025, 09:51:09 AM »
A wee change from the wall of text but..
I hope a moderator doesn't scold me for the gratuitous semi-naked pics!  :angel:
The sun was out (pretty rare around here) so it was "Taps-Aff"..






I gave the frame a quick scrape of the loose rusty bits and a wipe down, then on with some Hammerite Smooth. This ain't gonna be a show piece bike - at least not in my tenure.

I managed to snap a bolt trying to tighten the loose silencers, so decided it was time for a cup of Joe and a break away (bad pun!), for a short while anyways. Some time later: silencers tightened up with replacement bolts.
« Last Edit: June 11, 2025, 11:27:26 AM by DoubleGuzzi »
Nearly natural progression.. SS50, Z200, Z250B, Z400J, (H100), GT750, K100, ZR1100, 900 Trident, 955 Sprint ST, (ZR550, M600), 900 ST, (B750), V7III CS, (V50II).

Online DoubleGuzzi

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Re: The Guzzi Virus Spreads: V50 II
« Reply #9 on: June 13, 2025, 05:25:37 PM »
Didn't have much choice where I parked for a short while today..



Fortunately we weren't far from home and missus escorted me (with hazard lights on) for a few miles at 30mph. When I turned off the main road, it was apparent that the tyre was totally flat. Missus went home and brought back the car, with various pumps. It wouldn't blow up at all so I trundled back, sitting partially on the petrol tank, at a max. speed of 15mph on the straights.
Jeez, that took me back about 4 decades. I think that the inner tube is shredded.
« Last Edit: June 13, 2025, 05:32:27 PM by DoubleGuzzi »
Nearly natural progression.. SS50, Z200, Z250B, Z400J, (H100), GT750, K100, ZR1100, 900 Trident, 955 Sprint ST, (ZR550, M600), 900 ST, (B750), V7III CS, (V50II).

 

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