[QUOTE="Ginge"] How does that work then?[/QUOTE] It doesn't. IME.
You could always make your own for doing pairs. http://www.airheads.org/index.php?Technical Tips+$4 Carburetor Synchronizer
I've made my own example per those plans and it works beautifully on a twin- but the endless switching around of vacuum hoses on a four would be a major inconvenience, without some sort of quick-switching manifold type thingy.
Changing the petrol helped.. Then balancing it really helped (Ta for the loan of your gauges Loz), just one of the carbs was really out, but it was a bit of a bugger to get it all sorted. Seems to be running lovely now, and would comfortably pull way past 120, whereas before it was grumbling at about 105..
The Older Gentleman says... I have a set of Morgan Carbtune 11 4 rod gauges. They are about as good as I'll ever need.
It was opening, but that one carb was just quite a bit out of sync compared to the others.. All the spark plugs came out the same shade of brown-ish, so it doesn't look like a severe fueling problem or anything to worry about now. I think had I left it ignored it'd have suffered, but it only seems to have gone off song recently anyhow.. And now it's fixed..
I've found that unbalanced carbs can effect the engine across the entire rev and load range. There are two aspects to balancing the carbs one is the tickover balance the other is the synchronisation of the slides. The Guzzi is, I appreciate, slightly different to most multi carb machines as it has two cables. It is possible to have the slides opening at different rates and holding different positions which really unsettles the engine. I find I balance mine about every 1000 miles. This has an impact on the performance; probably not 15mph but enough to be noticed (5-7 mph IME) particularly in engine response. The idle balance you mentioned is governed by the slides' position at rest and the mixture screws. These can be spot on but the slide balance shot to bits and vice versa. I assume Ginge's bike's carbs are linked by a rod? These are not as prone to change as cable operated carbs but change they can. This would have a noticeable effect on top end.
Hmm that may have a bearing too, the bike certainly felt better and accererated as soon as the throttle was opened afterwards. I don't care anyhow, it now feels right, and that's all that matters to me really. Bring on the twisty alpine roads.
Ooerr, missus. That sounds like an unfortunate combination of circumstances, sweller. I think Simes' point is a good one, as is his question. Having said that, I left the oil change a bit late on the RF, due to the weather being cold/dark/wet - and let the level get a bit low, too. After a quick run, when stuck in traffic, a tap tap taptap tapping noise came from the top end which increased with revs ... An oil and filter change sorted that, thankfully.
Ran very low but there was still oil there. I've fixed the light; its only taken me 6 years to get round to it. Mainly because I have a fairly low opinion of oil lights. Damage is done when they come up. It goes out straight away and doesn't come on at idle (both hot and cold). It also takes 4-5 seconds for it re-light when the engine is shut down. The sender is some Fiat car one that had the right thread and connector, I assumed it would come in at about 8-10psi as most do. I'll find the intermotor number and see if it can be cross referenced. The oil gauge idea appeals; especially a permanent one. I have an old Smiths gauge I can hook up to allow temporary testing and check running pressures but I'd have to make some metric-imperial thread converter. Anyone got an oil pressure gauge that wouldn't look amiss on the Guzzi, 60psi (4.2 bar), smallish and with a black bezel that they'd like to sell/give to me?
Indeed. I used to think oil *level* lights were odd because they assumed complete faith in the engine and zero faith in the owner. But that is exactly why engines self-destruct through lack of oil, these days.
Oddly it doesn't knock; clatter or make any other oil starved damage noises; there wasn't any shiny debris in the old oil or in the sump; the oil didn't smell 'bad'; neither is there any heat damage around the big ends; it just squeaks. Like mice. I'm not even sure where its coming from but if I go really fast they get frightened and I can't hear their pathetic mousey whimpering.
No it had the full change, both oil and filter. To change the filter on a round barrel Guzzi it's a sump off job. Cleaned the pick up gauze and oil ways as well. As I'd had a problem I was very particular about cleaning and checking. No shiney debris in either the oil or sump, no obvious heat damage to crank; bearings (that I could see without dismantling) or cylinders and pistons. The drained oil didn't smell 'bad'. Still can't fathom the squeaking; its probably something I've disturbed cleaning out the breather expansion box and its now rubbing against something else. I may check that the rockers aren't running dry; I doubt they are but I'll check anyway. Whatever it is, its pissing me off.
It was somewhere around Barstow, on the edge of the desert, when the The vibration on a Guzzi will probably give the oil sender pipe a really bad time, but you can get braided ones which might be better, although I'd still be leary of breakage at the union end. Otoh, you can get an electric sender and gauge, pricier though, and the senders are a bit bulky. -- Dave GS 850 x2 / SE 6a SbS#6 DIAABTCOD#16 APOSTLE#6 FUB#3 FUB KotL OSOS#12? UKRMMA#19 COSOC#10
That's what I've got. Dead handy on the Blackbird, they are. Never tried them on the Wing, yet. I presume you can do twins with them? -- | ___ Salad Dodger |/ \ _/_____\_ GL1500SEV/CBR1100XXX/KH500A8/TS250C |_\_____/_| ..66257../..15856.../..3157./.19406 (>|_|_|<) TPPFATUICG#7 DIAABTCOD#9 YTC#4 PM#5 |__|_|__| BOTAFOT #70 BOTAFOF #09 two#11 WG* \ |^| / IbW#0 & KotIbW# BotTOS#6 GP#4 \|^|/ ANORAK#17 '^' RBR-Visited:35 Pts: 705 Miles:2429
Ta. <scribbles note in "to do" book> -- | ___ Salad Dodger |/ \ _/_____\_ GL1500SEV/CBR1100XXX/KH500A8/TS250C |_\_____/_| ..66257../..15856.../..3157./.19406 (>|_|_|<) TPPFATUICG#7 DIAABTCOD#9 YTC#4 PM#5 |__|_|__| BOTAFOT #70 BOTAFOF #09 two#11 WG* \ |^| / IbW#0 & KotIbW# BotTOS#6 GP#4 \|^|/ ANORAK#17 '^' RBR-Visited:35 Pts: 705 Miles:2429
----------------------- [ [ [ [ [ [ [ [ [ [ [ ------------------------ Approximately. Or about half the thickness of the Wing's workshop manual. -- | ___ Salad Dodger |/ \ _/_____\_ GL1500SEV/CBR1100XXX/KH500A8/TS250C |_\_____/_| ..66257../..15856.../..3157./.19406 (>|_|_|<) TPPFATUICG#7 DIAABTCOD#9 YTC#4 PM#5 |__|_|__| BOTAFOT #70 BOTAFOF #09 two#11 WG* \ |^| / IbW#0 & KotIbW# BotTOS#6 GP#4 \|^|/ ANORAK#17 '^' RBR-Visited:35 Pts: 705 Miles:2429
