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Carbs for my V7.

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Ben. View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Ben. Quote  Post ReplyReply Direct Link To This Post Topic: Carbs for my V7.
    Posted: 18 Mar 2015 at 20:52
I think my EFI is working as it should, but I just don't like it.
I don't like other people working on my motorcycles, so it doesn't usually happen - but this computerised film-flam puts me in the hands of the dealer.
No thanks.
The connection I usually feel between my right hand and the engine is not the same with EFI, which  is another reason for wanting to change.
I can make my own intake stubs if necessary, and do the cabling etc, but I'm not sure if I'll be disrupting any other part of the system by removing the EFI, so I'd be grateful for any advice there.
I used Dell Ortos on my V50 Monza in the Eighties, and they worked fine - is there anything better?
What choke size would be best for bringing the torque down to favour the lower and mid-range? 
Any ideas on air filters?
Are the present silencers suitable for the purpose?
Very grateful for any advice -
Ben.
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Mike H View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Mike H Quote  Post ReplyReply Direct Link To This Post Posted: 19 Mar 2015 at 11:41
Just thought, have you looked into the emissions regulations and possible legal issues?
   
  
See notes at bottom, "it appears in the UK that so long as the owner can prove the age of the engine the MOT tester may well be obliged to test the car to the standard required for the YEAR of the ENGINE and not the YEAR OF REGISTRATION of the VEHICLE itself"
 
I.e. the exhaust emissions limit at MOT time is determined by what it should be for and after the year the vehicle was manufactured, UNLESS you have an older motor with carbs on in the frame instead, AND you have documentation to prove it.
  
Also modifying the V7 motor etc. looks like being a very complicated and expensive job: http://www.guzzitech.com/forums/threads/v7-classic-carb-conversion.7558/
  
That's not even getting into insurance issues yet or what it might mean to DVLA, if anything...  
 
 
 
 
 
"Chicken nuggets don't dance on a Tuesday."
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Ken-Guzzibear View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Ken-Guzzibear Quote  Post ReplyReply Direct Link To This Post Posted: 19 Mar 2015 at 11:50
very expensive and may have issues with insurance ....cheaper option go BUY an older classic bike with Carbs
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GU221 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote GU221 Quote  Post ReplyReply Direct Link To This Post Posted: 19 Mar 2015 at 13:18
Just embrace it Ben. If you can't beat it, etc.....
 
I have the same problem, and vacillate between old bikes and new. I am mechanically incompetent, but have mostly always serviced my bikes myself. I have persevered with Guzzis, because they are simple to understand. I have never had a moments trouble with the EFI and am on my 4th Guzzi with it, and have had 4 carbied models. Wish I could say that I really understood carbies, but I never managed to make a bike run as sweetly as a Guzzi mechanic could make it. Likewise, I feel I know old bikes better, but with time I feel a lot less inclined to tinker. You don't need to worry about how the throttle "feels" because old Guzzi throttles were incredibly heavy, and I don't miss them.
 
K&N pod filters will fit straight on your efi with no mods required.

 
 
Pete Roper growls at me and tells me to get an injected bike after enlisting his help with a botched carb job.
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Ben. View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Ben. Quote  Post ReplyReply Direct Link To This Post Posted: 19 Mar 2015 at 18:10
Ah well ...
Thanks for the comprehensive responses folks, I can see that, as I suspected - it's not as simple as just fitting carbs and chucking bits away. I think I can do a few things to improve the situation somewhat, so I'm going for a better quality twist grip with a lower gearing, and if there's any way to increase the spring tension a bit, I'll give that a go. I find the motor so responsive I'm afraid one day I'll sneeze and fall off the back.

I reckon that I'm used to heavy flywheels, and tend to ride accordingly, so because I'm finding I'm surprised at how the recently acquired DR likes to rev - I think there's probably a case for adapting my riding style to the bikes rather than vice-versa, so I'll see where that gets me.

And talking of flywheels, the Enfield had a good romp in the Trough of Bowland this afternoon - Spring sunshine, lambs and catkins and all that stuff ...
and I'm still too young and thin to ride a Harley.

Ben.
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Mike H View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Mike H Quote  Post ReplyReply Direct Link To This Post Posted: 19 Mar 2015 at 20:15
That's Pete Roper is it?
"Chicken nuggets don't dance on a Tuesday."
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Brian UK View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Brian UK Quote  Post ReplyReply Direct Link To This Post Posted: 19 Mar 2015 at 21:37
I wasn't aware that there were any exhaust emissions test for motorcycles in the MOT. There are for cars.
Brian.

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Mike H View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Mike H Quote  Post ReplyReply Direct Link To This Post Posted: 20 Mar 2015 at 00:39
Not now, but who knows!
"Chicken nuggets don't dance on a Tuesday."
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Brian UK View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Brian UK Quote  Post ReplyReply Direct Link To This Post Posted: 20 Mar 2015 at 09:00
Ben, there is a computer program called GuzziDiag, with which you can check the FI system, and indeed make some alterations if you have the knowledge. It's basically free shareware, all you have to buy are a couple of connecting cables. Might be worth you while considering.
Brian.

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Post Options Post Options   Thanks (0) Thanks(0)   Quote Oldrat Quote  Post ReplyReply Direct Link To This Post Posted: 20 Mar 2015 at 10:12
That's sounds like a great idea.
It's a much cheaper and easier option to start with before embarking on transplant surgery.
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Mike H View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Mike H Quote  Post ReplyReply Direct Link To This Post Posted: 20 Mar 2015 at 12:34
That's a very good plan. Thumbs Up
  
Although the OP's original complaint was the complexity of EFI etc. making it more difficult for the home DIY'er to maintain ~ unfortunately this is true of all modern vehicles ~ but as with guzzidiag etc. the DIY community are fighting back. Big smile
  
There are still some clever guys around who build their own cars etc. and have to deal directly with this kind of electronics, mainly issues like the engine immobiliser, dictates which wires you mustn't cut!


"Chicken nuggets don't dance on a Tuesday."
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Ben. View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Ben. Quote  Post ReplyReply Direct Link To This Post Posted: 21 Mar 2015 at 08:40
Now we're talking! Thanks Brian, that's exactly what I need to escape the clutches of  "consumer farming". I would much rather be totally responsible for the bike's welfare, than occasionally strand it somewhere to be fiddled with by unknown hands. I'm not a good mechanic, but I think one who works for the love of it often does a better job than someone who needs to be paid. What's more, I learn more from my mistakes than from other peoples.
So I'm hugely chuffed, thanks again.

Born in the Forties, I was a subject, and I was ruled.
In the Sixties I became a citizen, and I was governed.
In the Eighties I became a consumer, and I was farmed.
These days I'm just another punter, and I'm f****d.

But no-one's going to mess with my Guzzi....

Ben.

PS. The Enfield's mixture is governed by the tiny spider who lives in the headlamp - I'll leave well alone there.
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