V50 MONZA rebuild |
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c13pep
Senior Member Joined: 31 Aug 2017 Location: Doncaster Status: Offline Points: 2110 |
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Posted: 28 Jul 2018 at 09:52 |
Started on the boxes of bits that are currently my MONZA project decided to check out the engine which looks to have been bead blasted. The engine was seized so full strip was only solution, however when I tipped the lump forward what appeared to be sand came out of the alternator cavity !!!(2 tablespoons) Further stripping saw one piston with sand on top of it (1 tablespoon)
It appears the engine and gearbox have been sand blasted as a lump by some numpty doing a quick clean up job!!!! What a waste of a fine old engine, hopefully I can recover enough pieces to make it a viable proposition CHRIS |
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you can`t have any fun in a straight line
Monza Honda CB77 project |
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iansoady
Senior Member Joined: 23 Jul 2017 Location: Redditch Status: Offline Points: 2402 |
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Provided it hasn't been turned over it may be OK inside?
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Ian
1952 Norton ES2 1986 Honda XBR500 1958-ish Greeves/Triumph in progress |
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c13pep
Senior Member Joined: 31 Aug 2017 Location: Doncaster Status: Offline Points: 2110 |
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I`m assuming the worst, if someone's dim enough to sand blast a built motor then they`re potentially likely to try and start it, also the gearbox was attached so it got the same treatment It looks as if the bottom end may have survived although the rods are rusty. All will be revealed when I`ve washed all the parts. On a positive note the chassis and bodywork are in quite good nick I`m loath to let a Monza be lost so maybe a keeper regardless of cost CHRIS |
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you can`t have any fun in a straight line
Monza Honda CB77 project |
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Jerry atric
Senior Member Joined: 24 Nov 2014 Location: Wiltshire Status: Offline Points: 3367 |
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Mike H
Senior Member Joined: 21 May 2014 Location: East Anglia Status: Offline Points: 8733 |
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Holy crap |
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"Chicken nuggets don't dance on a Tuesday."
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dan_s
Senior Member Joined: 29 May 2015 Location: Israel Status: Offline Points: 237 |
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This engine is sending you a message:"i'm a wheelbarrow, i have sand in me, you deserve better".
So I'd put in the lovely monza an engine with acceptablepower, like a V65.
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c13pep
Senior Member Joined: 31 Aug 2017 Location: Doncaster Status: Offline Points: 2110 |
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Funnily enough I had the engine in a wheelbarrow when I unloaded it at my end so maybe I should just have added cement I have the basics of the original engine ie. casings a bottom end and the heads look to be salvageable. The jury is still out on the pistons and barrels so all is not lost. I will retain the casings at all costs just to save the original engine numbers however it looks to be a long and patient renovation just to obtain parts. CHRIS |
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you can`t have any fun in a straight line
Monza Honda CB77 project |
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c13pep
Senior Member Joined: 31 Aug 2017 Location: Doncaster Status: Offline Points: 2110 |
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Update on Monza engine strip down it looks like most things are salvageable now that I`ve cleaned out the crap except for at least one cylinder but probably both, so looking into rechroming them if I can find someone reliable. The pistons may be salvageable but its a big `maybe` seeing as the rings had to be chiselled out
CHRIS |
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you can`t have any fun in a straight line
Monza Honda CB77 project |
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Brian UK
Moderator Group Joined: 13 May 2014 Location: Surrey Status: Offline Points: 17641 |
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You sure they are chrome bores? Thought they were Nikasil.
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Brian.
Better 5 minutes late in this world than years early in the next. |
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c13pep
Senior Member Joined: 31 Aug 2017 Location: Doncaster Status: Offline Points: 2110 |
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The chunk that's come off certainly looks like chrome and workshop manual mentions chrome as not being machinable CHRIS |
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you can`t have any fun in a straight line
Monza Honda CB77 project |
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c13pep
Senior Member Joined: 31 Aug 2017 Location: Doncaster Status: Offline Points: 2110 |
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Looking for a company that can replate my Monza cylinders has anyone got any recommendations
CHRIS |
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you can`t have any fun in a straight line
Monza Honda CB77 project |
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dan_s
Senior Member Joined: 29 May 2015 Location: Israel Status: Offline Points: 237 |
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Tried gutsibits or motomecca for new cylinders? There are several firms in England who replate nikasil. |
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c13pep
Senior Member Joined: 31 Aug 2017 Location: Doncaster Status: Offline Points: 2110 |
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Just an update on my Monza restoration I have managed to source an excellent pair of cylinders from Ebay (seller homernmarj) but DVLA have put a spanner in the works. Spoke to DVLA today, the actual person dealing with my case, (now there`s a novelty) very helpful lady, who told me that the reg and the frame number don`t match their records. I now have to send in more photos of the boxes of bits etc. so that they can do more investigating in order to assign me an age related plate.
This restoration is proving a proper challenge, not least on my patience as the frame has no stampings on it apart from Moto Guzzi which is covered up by the Vin plate, so potentially the frame could be a `ringer` or the vin plate is fake. Oh joy CHRIS |
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you can`t have any fun in a straight line
Monza Honda CB77 project |
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Mike H
Senior Member Joined: 21 May 2014 Location: East Anglia Status: Offline Points: 8733 |
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Bum. |
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"Chicken nuggets don't dance on a Tuesday."
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c13pep
Senior Member Joined: 31 Aug 2017 Location: Doncaster Status: Offline Points: 2110 |
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Just finished trawling the web for bike parts and came across a SWISS listing on Ebay selling blank Moto Guzzi vin plates, which for extra money they will engrave
Makes me wonder about my own situation!!!!! CHRIS |
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you can`t have any fun in a straight line
Monza Honda CB77 project |
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