pete roper

This goose is a prime example of why I’m so very glad I’m not in the trade any more. Yes, the tune and the change in exhaust didn’t cause a casting to fail. How could they? But, at the same time he proves himself to know absolutely nothing about engines, tuning, or modern engine management systems and then is upset when the manufacturer of the machine denies warranty! Did he not consider such a possibility before embarking on any changes? Does he believe that he should be able to do anything, unsuitable or otherwise, to his machine and if it all falls in a screaming heap somebody else should pick up the pieces? What a bloody Galah! And the pouty, spoilt little boy reaction after it’s fixed! “I don’t like it any more. I’m going to get another toy, I don’t even want to ride it again! Wah! Wah!” F*ck these people! They are one of the main reasons we can’t have nice things! Look, if I’d sold it and it snapped a casting like that it would obviously be a casting fault. I can’t see how it could be anything else. I would have explained it was just bad luck, (It’s not like they can x-ray every casting for faults!) and slapped a warranty claim in for the rocker carrier, gaskets and anything else needed, perhaps a pushrod? There would have been no need for Piaggio to know about any changes because they would be irrelevant to a failure like this. If I was a dealer and had another model on the floor I probably would have cannibalised the entire rocker assembly off it and got old mate back on the road in an afternoon. Swapping the rocker gear off a smallblock is scarcely brain surgery, you could do it in 3/4’s of an hour max. You don’t even have to take the bloody petrol tank off FFS! Perhaps the reason it all became such a drama was because he’s a pathetic, snivelling, self important ignoramus and cut up rough at the shop? I dunno? It all seemed like a full-on whine-a-thon to me….. But what would I know……..

My comment about them not crashing well wasn’t so much a criticism as a simple statement of fact. They don’t! Thing is they aren’t designed to be crashed so in terms of their performance and ability as a motorbike it’s an irrelevance. If I was a few years younger I’d be seriously looking for a V11 now but I’m old and unhealthy and don’t have much money for fripperies and toys any more since I retired and with my current stable of bikes I certainly can’t justify another one! The biggest issue with the Spineframe series to me is that they were designed and built at a time when the factory was very cash strapped and therefore some of the design features, (The outrigger bearing in the bevelbox casing is a good example.) are a bit ‘Poverty Pack’ and poorly thought out. Other parts though like the four shaft gearbox are a delight! I wish that had been carried over into the CARC series as a good one is a real joy to use! Look, they are what they are. The only way to know if you want to buy one is to ride one. So what are you waiting for?

Is this the same? http://www.eaglescreens.com.au/wp-content/uploads/2011/09/M17Pricess.jpg

Do Eagle Screens do one? I think it’s the same screen used on the Balabio and Titanium amount others. Eagle may have a mould or whatever. Can you post up a pic? I can enquire after the weekend if you wish?

Oh it rains. Generally though the Canberra region is one of the driest areas on the driest inhabited continent on earth! Most of our rain comes in spring and autumn, although this autumn has so far been very dry. Both summer and winter tend to get dominated by large high pressure systems that sit over the continent and winter especially is characterised by incredibly clear, still, days with bright sunshine and few clouds. As soon as the sun drops below the horizon temperatures plummet and overnight temps of -5*C are common, we can get down to -8 occasionally! As soon as the sun comes up again though temperatures climb rapidly and by 10.00AM it will be well above freezing and by early afternoon it can be in the mid to high teens. Sure, when we do get winter storms from the south west it can be utterly miserable but really it’s quite a pleasant climate and we have year round riding and no salt on the roads. What’s not to like? Some of the best riding roads in the country are also only an hour or two away.

Wot he sed

Yup, it’s just mayonnaise. Especially in cooler, damper climates as the engine heat cycles between runnng and not as it cools the water in the gas inside the crankcase, of which there will be a fair bit as water is one of the main y-products of combustion and there is always some blow by past the rings, will condense out on the inside of the cases. As the rocker covers always tend to run cool and are at the top of the motor this is where a lot of the water ends up. It combines with the oil droplets as it condenses and voila! The disgusting looking but essentially harmless mayonnaise. The answer to preventing it is getting the oil hotter. Once the oil temperature and internal temperature of the engine gets above about 90*C the the water will sublime out of the oil and off the internals of the engine and will over time be expelled through the breather system and rebreathed through the combustion chambers and expelled in the exhaust. No big block Guzzi begins to get even remotely warm enough to do this in winter unless you are doing motorway speeds for over twenty miles at least. Something I’d think it would be unlikely you’d be doing on the IOM, especially in winter! At least the V11’s have the advantage of having a thermostat in the oil cooler circuit which will help bump up the oil temperature a bit in cool weather. The 8V engines have a separate cooling circuit independent of the lubrication circuit and it directs the oil through the cooler unregulated. This means that any time the ambient temperature is under about 20-23*C it is damn near impossible to get the oil temp above 100*C which is where you want it unless you thrash the bastard mercilessly everywhere in 4th gear @ 6,000+RPM! Some of us owners have fitted external thermostats to our bikes, others, like me, who can’t be arsed, just tape off the cooler in the cooler months! Finding that nasty crap in the rocker covers is disconcerting the first time you see it and it is preferable that it not be there but it is what it is. Some oils are more prone to forming mayonnaise as well. Castrol has always been worse than many others and it’s one of the reasons I try to avoid it, but a damn good thrashing from time to time is the best medicine! Also, if you are riding in the wet at all make sure you put some sort of ‘Spray flap’ in the triangle of the swingarm cantilever or you’ll find your gearbox full of water as the stupid breather is right in line with the rear tyre. Mornin Phil!

No worries, thanks.

If the Tekno brackets are available I would love them. I’ll happily buy the bags as well but only really want the mounting kit. I have Teckno bags but in their travels my brackets went AWOL. A set is a bit of a holy grail for me. Yeah, I’m in Oz but we can sort out shipping. thanks. Pete

This is the second or third time I’ve heard of camchain/tensioner related failures on an MGX 21. First one I heard about belonged to the bloke who runs Wildguzzi. It I believe actually snapped a camchain somehow trashing one side of the motor. It was rebuilt and from memory did something very similar again shortly after. The story really frustrated me because ALL of the second generation Hi-Cam motors are essentiallt identical as far as the bits that spin and go up and down are concerned. The cooling system is plumbed very differently in the small port 1400 motors but the lubrication system, which includes both the cam chain tensioner feeds, the under piston cooling sprays and the cam, tappet and cam bearing feeds is all identical to the 1200’s and the MGS is the same, identical, to the other 1400’s which are all much of a muchness. Once the flat tappet fiasco was sorted out the motor was pretty much bulletproof. I’ve seen a few dropped valves but that is usually due to the valve timing being incorrect after rollerisation or lack of oil changes but other than that most problems are oil leaks and oil pressure and phase sensor failures. What made these MGX’s fail really frustrates me because nobody seemed willing to dig into it! Shops just seemed to shrug and either replace the motor or just push the bike into a corner and forget about it. Something like that would have driven me batty! Fixing it is the least of the problem if you don’t know why it failed in the first place! There is no point in just rebuilding something after it has blown up like that unless you work out why because, oddly enough, if you don’t, the chances are it will just do it again! I’d have had at it like a dog at a bone but alas I never had the chance. My best guess, and it really is a guess, is that there is some fault in the machining of the oil galleries in the crankcase in the rear wall of the timing chest. Unlike earlier motors the front main is a pressed in steel sleeve with a tri metal coating, it’s not designed to be replaced. I’m sure this system was adopted for cheapness of manufacture but the upshot is that oil delivery around that bearing to supply both it and the under piston sprays, the cam chain tensioner feeds and the front cam bearings and rocker/cambox feeds is done through a fairly complex system of drillings and machinings in the crankcase itself. The ‘Guess’ I’m making is that somehow or by something that main delivery gallery is somehow blocked or partially occluded preventing the tensioner plunger from priming properly and maybe starving the front cam bearing of oil and causing a potential cam seizure in the cambox. Sadly I’ll never get the chance to follow up on this hypothesis and nobody else is likely to want to so it will, no doubt, remain as one of those eternal mysteries that blacken the company’s name from time to time. As it is I was never a fan of the ‘Small Port’ motor anyway. Too smooth and it seemed to have moved away from the bare bones ‘Engineering Purity’ I see in the Big Port 1200’s. That’s just my own bias though. That and the fact I think the 1400’s are huge, under suspended, overweight, tubs of shite of course!

I’m a big fan of the Centy, but I’m me……..

It helps if we know left or right?

On the bottom end there is always the risk of oil pick-up exposure on the ‘Broad Sump’ engines but it really simply depends on whether you’re willing to risk there being damage. If you grab the rods from underneath and try and move them on the journal, as long as they don’t noticeably move or make squelchy noises they are probably OK. If you want to make sure simply drop the rod caps off, push the pistons and rods up the bore enough to see the top shell and make sure. Now ‘Best Practice’ is to never re-use rod bolts unless they are ones designed to be torqued to stretch. The reality though is that many, many Guzzi owners regularly and repeatedly re-use rod bolts with no issues so if it were my engine? That’s what I would do. It’s not a race engine. It doesn’t need to be treated like one. If the shells show signs of wear? Flick a new set into it. You can give the crankpin a ‘Poor man’s linnish’ with some wet and dry as well if you think it needs it. If it is scored or pitted though it’ll need regrinding and the rods closing and grinding.

Sorry, I haven’t been following this topic. I’ll have a scan through.