gelos
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Posts posted by gelos
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Just so, I think the same. I´ve machined 0,7mm from cylinder head down face, the squish area is flat, not bevelled, CR rise about 11:1. And now is time to rebuild to double spark ignition.
Before
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The squish is 1,8mm, almost optimal value.
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K-Line guide sleeve, I've never seen this, it looks well and easy.
My old guides kept very tight in head, wear was on inner diameter especially on exhaust side.
My new intake guides are now 3mm shorter in port and conical form for better air flowing.
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I think valve to piston clearance with thinner gasket is okay providing stock cam. My measurement find about 6,2 mm intake, 6,6 mm exhaust side free play, valve lift on TDC is about 3,5 mm, it will run good.
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Hey does anyone know if its normal for the heads to show discoloration like that? Valve guides worn? Im replacing the valve stem seals , just wondering if thats normal though ..
My engine - heads were the same looks,exhaust valves and stems worn explicit to replace, any seals and gaskets, another parts keep in. IMO all V11 have not valve stem seals. You can use head gasket from Breva 1.serie Nr.GU03022055 is 0,80mm thinner, compr.ratio goes to 10:1.
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Hi Neil,
are you sure it is rebound cartridge on your photo? My fork has 3 holes on compression side catridge, rebound has none.
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The setting fault at your bike was in the better side, big twins likes fuel. I predikate your fuel consumption will go down.
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Hi, It is very interesting report. Do you know what oil type you had before repair/rebuild? I thought that specification on 10W oil from the Guzzi workshop manual is not very regular. I feel the bike run especially at cold temperature as much overdamped. But I use Putoline HPX 10W fork oil, according to 40/100°C viskozity equals Motul 15W. I think its time to change my oil.
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Hi, from what side is damper unit on your photos? LH/ C compression or RH/ R rebound?
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What type is your fork, 40mm (to MY02) or 43mm (from MY03) leg diameter? I think for V11 Sport -MY02 with shorter arms is applicable a Showa piece from Aprilia RSV 1000 99-03, brake calipers mount point and triple clamp diameter is the same. Substantial is length of your fork.
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I think with so much mods will your engine never run good with stock map. From my experience make the under engine exhaust much good volumteric efficiency in mid-range rpm. You have let start TunerPro and create your own version, switch off oxygen sensor and add fuel duty up to 4000-4500 rpm. If you want, I have my own custom map for Ballabio with QD under engine exhaust/stock airbox made for my friend.
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There is still a comparison opened original vs Titanium cans with Stucchi crossover.
Power and torque almost identical, maybe 1 PS more for my built.
But the Titanium weight is famous, 4,8 kg versus 10 kg / pair.
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Here is a comparison from 2014- single spark plugs, std compression, std crossover pipes :
- light blue - standart cans
- dark blue - open cans
The sound is very decent, just a little noisier than the original, I was expecting a bigger difference, next time I chose a little larger diameter pipes.
As you see performance increases in all RPM.
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So it looks original design V11 exhaust as reflex damper pricip.
I rebuilt the inner part to absorption type damper, perforated tube D 50 mm, housing lenght 30 mm shorter,from the outside it looks as original, its good for our traffic police.
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Twin spark head, is important only if you plan more compresion ratio.
I forgot, my flywheel is about 500 gramm lighter, I think is more possible, I am too careful.
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Here shown photos my green hopper.
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It's make me very happy modify my V11 to be faster. Open airbox without lid, open exhaust mufflers, milled twin spark heads with stock piston, Stucchi cross-over and many work on personaly ECU remapping via TunerPro + GuzziDiag/Reader/Writer.
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My 2002 V11 LeMans with twin spark heads + 10,8:1 compression + ECU 15M via TunerPro modified and only for dyno test three exhaust variants:
1.Dark green - original crossover + opened standart cans
2.Red - Mistral crossover + Guzzi titanium racing cans
3.Light green - Stucchi crossover + opened standart cans
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First make download a bin file from bad ECU with IAW15 Reader, save it and send to Meinolf or me, is interesting to see what problem has this software.
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After re-flash stay the CO adjust value the same one as before.
Its possible you need a new CO adjusting with another map.
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Send me your email adress via PM, i have it.
Gelos
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Very good photos, thanks.
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I tested today the Fiat dual plug coil on single spark V11. First cable goes into engine, second cable on simple test arrangement. The spark jump easy 20 mm distance. I think the coil must work solid into real engine running.
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Hi Ernst, your message about coils is bad surprise for me. My project is CR about 10,5 by redesign heads. Which coils do you recommend? What do you mean about japanese dual coils from Suzuki DL 650, primary 1-3 Ohm, secondary with caps 25-40 kOhm?
sp838-its kind of you, oil input goes into new place, but plug bore angle and position have not many option, it is my first attempt.
V11 Rebuild and customisation
in 24/7 V11
Posted
And after rebuild