68C

Chuck, that is a thing of beauty. I miss the odd flight in 'unserviceable' aircraft since I retired as a CAA Licenced Engineer. Looking at that makes me wonder if I should actually PAY to go up sometime although I preferred being paid.

A hero, old and still smoking and no gloves!

Back to your original post and looking at a standard V11 wiring diagram and the Silent-Hektic PDF instructions. The T wiring is the common positive feed to the coils. The Silent-Hektic green wire goes to the left coil negative terminal, the black wire goes to the right coil negative terminal. I assume the Silent-Hektic coils will have the positive and negative marked. Or are you using the original Guzzi coils?

Try this, https://www.ebay.co.uk/itm/Moto-Guzzi-V11-Exhaust-Cross-Over/253316003673?hash=item3afacf7759:g:ZcsAAOSwUYNaNVXw

Search 'Moto Guzzi Exhaust cross over' on Ebay.co.uk

I am talking about the IAW15M ECUs.

Had to go back and look, did not notice that banner before. Still one can expect an ignition systems seller to be shocking. 'The European Union is the future' 'The Nationalists are the past' In our house my wife is rabidly pro Brexit. I felt neither side put up a good arguement so why change? Our 17 year old son thinks we should stay in and suggests his generation will rejoin once the old folk have died off!

Sorry cannot help but thanks for introducing me to Silent Hektic. I did the usual internet trawl. https://www.silent-hektik.de In German, internet translation OK. They even have a complete fuel injection kit for carb Guzzis! http://www.motoguzzisales.co.uk/Silent%20Hektik.htm In English, good write up and PDF fitting instructions, although these could do with proof reading by a native English speaker.

Looking at the various V11 wiring diagrams prompts me to ask a couple of questions. 1. Earlier V11s have ECU pin 15 connected to a 'warning lamp'. This pin is not connected on later non-lamda bikes. What was the function of this light, can it be fitted to later bikes? 2. ECU pin 17 is permanently connected to the battery. Is there a continual, albeit small, current drain. Would adding an under seat switch prolong battery charge for longer term storage?

Rainwater drain from around the filler cap? Try blowing up it and see where it comes out. (with a football pump)

I feel queasy.

Up 'til it snaps then back off half a turn.

At the time my brother was a twenty year old Royal Engineer attached to 42 Commando in Malta, he did the whole Green Beret thing in Plymouth. (As an aside, he tells me he was instructed to tell any American who asked what the RM shoulder badges meant that he was to reply "Real Marine" and to stand his ground). It seems getting drunk and riding too fast at the local airstrip did not go together too well, the side cases suffered when the footrests dug into them. He had them welded up over there but now corrosion is opening up the old welds. We think we will build what we can and then rethink, we are both retired now so funds not huge.

I said his Duke 750GT is in bits. Sadly my Commando not much better, now undergoing the 'Great British Winter Rebuild' that normally lasts at least ten winters. Trouble is when a bike breaks I tend to get something else but don't sell the old bike so end up with a shed full of bikes in bits. Not so much a collecter as a hoarder. Still those future barn finds have to hide somewhere.

Thanks for the rapid response all. Did not realise the rarity of these earlier Dukes. I think I will have to sit down with my bro and talk it over. Engine is in bits in a box for at least the last 25 years, he kept the bike running until then on a shoestring so expect major work needed. No notes taken so shimming data lost. Perhaps the damaged cases are the least of it. I recall he dropped it a few times and the footrests damaged the cases, they were welded up to stop leaks but not pretty. Still there cannot be many one owner bikes like that around so he may be better advised to sell as a basket case. Thanks again.

Not a Guzzi but an old cousin. It all started in 1972 when I was in the army in Germany, I bought a new 750 Commando tax free and bragged to my brother also in the army in Malta. He wrote back with a photo of his new 1972 Ducati 750GT he had just picked up in Italy, also tax free! 45 years later, after his divorce, remarry, house moves etc he phones up asking about his Ducati engine he left with me for safe keeping in 1995. OK I still have the motor but note both L and R main primary and timing covers are damaged. I would like to suprise him by rebuilding the motor. Hardly any round case 750 parts on Ebay. Any ideas where I might get them?

And step 3, I guess 1250°C is hot to the touch.

Pretty much the same in the UK. The local Ironmongers/Hardware shop don't sell anything really useful now, just decorating stuff and cheap basic tools. No more selection of nuts and bolts, metal stock or even proper paint stripper. The trouble is nobody mends anything any more.

You would have thought a V Twin motor with its uneven exhaust pulses would work better with no crossover, just down pipes into seperate silencers. The 1969 Triumph T120 Thruxton system had larger diameter down pipes which reduced in diameter about halfway down, cannot recall if it had a crossover - probably one very close to the exhaust ports of course that had even pulses.

We should encourage this, think of the amount of running gear that would appear on Ebay.

Came across this the other day, may be of interest especially as their IAW15M ECU map is designed to improve low to midrange when using K&N pod filters. http://shop.trikingsportscars.co.uk/product/ecu-re-map-iaw15m/

I do hope these are American and not English suspenders you are twanging, or do you have a party going on over there?

Don't forget your ten gallon hat only holds a little over eight gallons in the UK. UK gallon 4.546 litres x 5 = 22.73 litres. US gallon 3.785 litres x 6 = 22.71 litres. This accounts for some wildly different mileage figures, best to say 'miles per US gallon' etc. As I wander off topic I thought I would share todays UK Unleaded Fuel price, now at $6 per US gallon. E5 (5% ethanol) Unleaded Petrol £1.20 per litre. £1.00 = $1.32 $1.32 x 3.785 = $4.996 Which oddly is about what we pay per UK gall in Pounds.

Thank you, truly great to follow this thread.

Thanks for the advice, unfortunately it did not help. Finally got it working. I deleted all Guzzidiag files then reloaded the Guzzidiag v47 zip file and extracted it. On starting Guzzidiag I was presented with a small pop-up window requesting language to be set, then another requesting v11 model and the Comm port! Somehow I must have missed that on my original (last month) reinstallation. It seems you cannot change language or port again once fully installed. EDIT I now see at the top of the screen 'File' which lets down an option for 'settings' where I can now select the Comm port. For some reason that was not visible before. So yes you can alter settings.