Author Topic: This should get all the scaredy cats wetting themselves! (Read 10401 times)

Chuck in Indiana · « **Reply #1 on:** November 11, 2018, 05:37:50 PM »

Woopsie..

LowRyter · « **Reply #2 on:** November 11, 2018, 05:40:23 PM »

Markcarovilli · « **Reply #3 on:** November 11, 2018, 05:57:47 PM »

Ouch...

Wildguzzi.com · « **Reply #3 on:** November 11, 2018, 05:57:47 PM »

guzzi4me · « **Reply #4 on:** November 11, 2018, 06:20:59 PM »

I don't think that will buff out........

Strada · « **Reply #5 on:** November 11, 2018, 06:23:14 PM »

Quote from: pete roper on November 11, 2018, 05:32:45 PM

Is there a narrative that accompanies this? :)

guzzinka · « **Reply #6 on:** November 11, 2018, 06:25:52 PM »

Quote from: Strada on November 11, 2018, 06:23:14 PM

Is there a narrative that accompanies this? :)

Yeah, "BANG!!!!"

DC950 · « **Reply #7 on:** November 11, 2018, 06:29:44 PM »

that's what happens when you don't use the exact same type of oil that I like.

Daniel Kalal · « **Reply #8 on:** November 11, 2018, 06:35:13 PM »

stelario, Pete?

guzzisteve · « **Reply #9 on:** November 11, 2018, 06:47:00 PM »

From an owner after setting his valves, no skewer needed.

John A · « **Reply #10 on:** November 11, 2018, 06:53:26 PM »

Some fellers are just hard on equipment , (suspenders snapping )

Guzzi Gal · « **Reply #11 on:** November 11, 2018, 06:54:11 PM »

Ouch is right!

Bulldog9 · « **Reply #12 on:** November 11, 2018, 06:56:40 PM »

Well, thats one way to make a Guzzi 'thumper'

lucian · « **Reply #13 on:** November 11, 2018, 07:32:51 PM »

Damb, What be the cause of dat?

Bill Owens · « **Reply #14 on:** November 11, 2018, 07:43:58 PM »

Pete, we must know!

ohiorider · « **Reply #15 on:** November 11, 2018, 07:44:38 PM »

Scared? nah .... not me! I love riding a bike that can implode like this..... gives me something to talk about.

stubbie · « **Reply #16 on:** November 11, 2018, 07:57:48 PM »

A broken valve stem?

John Ulrich · « **Reply #17 on:** November 11, 2018, 08:01:56 PM »

A missed shift during an Italian tuneup.

V7Record · « **Reply #18 on:** November 11, 2018, 08:21:44 PM »

That's sub-optimal...

pete roper · « **Reply #19 on:** November 11, 2018, 08:22:13 PM »

Yes, it dumped it's cam timing due to being assembled, I think at the factory, with one of the holes in the finger plate over the cam locating pin.the pin worked it's way out.

In normal service most of the force needed to spin the cam is imparted by friction between the face of the sprocket and the cam but given time and enough heat cycles and once the pin isn't doing its job the sprocket will start to creep.

Before it went 'Bang' he'd checked the valves and the exhausts were tight. That should of been the red flag but he missed it. Thenon his last trip it must suddenly of slipped badly and biffed the exhaust valves hard enough to bend both and snap the head off one.

Anyone got a spare motor hangin around?

Pete

pete roper · « **Reply #20 on:** November 11, 2018, 08:34:10 PM »

Actually, amazingly, the bore on that cylinder is fine! Not a mark on it. The head is scrap obviously but I've found a spare second handy off one of my wrecks and will find the closest weight piston I can out of the multiple barrel sets I have and use that in his bore. New rings, couple of valves and a head service, handful of gaskets and stuff and he'll be mobile again. Bottom end feels fine.

I think I might just check the clinger plate location on the other side as well eh?

Pete

PS. When the silly pricks redesigned the barrel for the larger reservoir for the chain tensioner they made it so big you can't lift the barrel! Then the Loctite the studs in with 'F@#& off I'm never coming out!' Green Loctite!

. Luckily we have an even more 'F@#& off' stud extractor with teeth like a Great White shark! That and a metre long breaker bar made short work of the factory's attempt to make me drop the engine!

oldbike54 · « **Reply #21 on:** November 11, 2018, 09:42:44 PM »

How is the conrod on that side ?

Dusty

pete roper · « **Reply #22 on:** November 11, 2018, 09:55:36 PM »

Rod is fine! Bearings also feel fine. I've checked it as best I can without removing it and it looks good. (shrug?) Go figure.

Pete

Paul Brooking · « **Reply #23 on:** November 11, 2018, 10:12:19 PM »

There is a current Topic on "Leathers or Textiles".

Maybe the owner/rider of that bike may want to comment on the benefits of "Scotch Guarding" and how it can preserve your Leather or Textile pants during emergencies?

pete roper · « **Reply #24 on:** November 11, 2018, 11:17:48 PM »

Quote from: Paul Brooking on November 11, 2018, 10:12:19 PM

There is a current Topic on "Leathers or Textiles".

Maybe the owner/rider of that bike may want to comment on the benefits of "Scotch Guarding" and how it can preserve your Leather or Textile pants during emergencies?

No need, it wasn't a crisis. He stopped and then rode it onto the hard shoulder. The damage would of occurred in the first hundred or so revolutions. After that it was just a 600 single.

Pete

jacksonracingcomau · « **Reply #25 on:** November 12, 2018, 01:25:20 AM »

re checking rod for straight. I was sus on larios that both had popped. Bolted 2 gudgeon pins together while join in bush spinning to keep true. Tells the story, maybe not nth but one rod flagged up, ended up using the other crank and rods. Use case mouth to measure clearance, up down and twist. this one twisted !

Tom H · « **Reply #26 on:** November 12, 2018, 01:35:07 AM »

Pete, check the big end rod bearing. Had a similar thing happen and the bearing had a nice dent. If not for the dent, it looked fine.

Tom

pete roper · « **Reply #27 on:** November 12, 2018, 03:30:50 AM »

Guys, believe it or not I actually know most, if not all, of the shortcuts you can do to avoid a total strip down.

I'm acutely aware of the fact that a the sort of top end damage caused by in incident like this can cause problems lower down, usually with big end bearing damage rather than rod and believe me 8V rods are, err? 'Robust'.

Can I get him out of this mess cheaply? I really don't know. But using my skills and experience I'll try or go down fighting. I've already told him I can give no guarantees but the alternative is essentially a new motor......

His choice, not mine. I'll happily shovel it into the back of a Ute if he wants. My feeling though is that that would be a waste.

Pete

StanHaw · « **Reply #28 on:** November 12, 2018, 03:42:00 AM »

Quote from: pete roper on November 12, 2018, 03:30:50 AM

Guys, believe it or not I actually use best testosterone boosters and know most, if not all, of the shortcuts you can do to avoid a total strip down.

I'm acutely aware of the fact that a the sort of top end damage caused by in incident like this can cause problems lower down, usually with big end bearing damage rather than rod and believe me 8V rods are, err? 'Robust'.

Can I get him out of this mess cheaply? I really don't know. But using my skills and experience I'll try or go down fighting. I've already told him I can give no guarantees but the alternative is essentially a new motor......

His choice, not mine. I'll happily shovel it into the back of a Ute if he wants. My feeling though is that that would be a waste.

Pete

That's most certainly a waste. Did you try talking him out of it?

pete roper · « **Reply #29 on:** November 12, 2018, 04:00:01 AM »

Initially I gave him a worst case scenario. Then I gave him a scenario using second hand parts from outside sources, (This was before I'd pulled the cylinder, a task in itself!) then I realised I could get him out of it cheaper, but not without risk.

This was all communicated in full, along with all the 'All care, no responsibility' caveats that come with taking the cheap path.

I also said that if he wanted I'd give him $2k for the wreck and explained I had lots of slow moving CARC stuff, (Like everything apart from engines!) so I was hardly likely to make a sudden killing but I ADVISED him that I thought the odds of me getting it running by the cheapest route were very good.

I then threw it back in his lap.

Before I'd had the chance to tell him that his barrel was good and I'd got a serviceable head he called me back to say go ahead with the expensive, (And far more profitable to me!) option. I was able at that point to say I had what I thought was a better, cheaper, option.

Perhaps I did that because I'm a real snake with a hidden agenda.

.................

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Author Topic: This should get all the scaredy cats wetting themselves! (Read 10401 times)

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