Cam operated 36mm carb tops......

Deleted account 211025001

Registered user
Joined
Feb 3, 2005
Messages
8
Reaction score
10
I've had several Guzzi's with 36mm carbs but they have all had the plastic top 'mod' to lighten the throttle response.

My current LM is the same. I have to say it has the heaviest throttle of any Guzzi I've owned and despite new Venhil cables and playiong with routing (please note Cookie ;)) I have yet to get something I'm happy with (more investigation required) which has got me thinking.........

Do the plastic tops really make much difference? I much prefer the look of the cam operated tops and if I'm gonna have a heavy throttle anyway what the heck, I may as well source some of these and be done with it :nenau

I have yet to look for any but are they reasonably easy to get hold of, anybody got a pair they want shot of?

Any thoughts?

Andres

PS Oh, and I did once shorten the carbs internal springs - don't think I'll try that one again :eek:
 
i've tried plastic tops that feel lighter than mine, but the standard crank(?) tops i have fitted seem ok too.
the trouble with the plastic tops is getting a really good cable route to them. ideally, they would seem best with the cables outside the tank, which looks daft.
otherwise, i've seen some with steel 90° guides on top of the carbs. that might help?


have you tried lubing the cables? i know you're not supposed to, but i really can't see why not. i often do, with good results.
 
Ha, I know what you mean about the routing looking like it should go outside the tank and I have oiled the cables (like you, I usually do).

Now you come to mention it, I've had those 90' bends on a previous bike and removed them which, IIRC, actualy helped a bit. The LM has them so maybe I'll try removing them and see..........mind you, I guess that'll mean new cables :rolleyes:

I think I'll also try and see if I can find some reasonably priced 'crank' tops and see if there really is much differnce - they defo look so much better :)

Andres
 
they do look the biz, and that's what counts :D

off topic: i guess you're taking your le mans to sids for the airhead w/e?
 
cookie said:
............
off topic: i guess you're taking your le mans to sids for the airhead w/e?
Click to expand...

Are you taking yours?

I've not riden mine since getting my new hip.................but prior to the op it was excrutiating to ride for more than 30 miles or so (from my doubled up metal leg as well as my hip). New tyres being picked up today (BT45s) and MOT a week Saturday so after that will have a 'proper' ride and see how it pans out.

I'd love to go on the LM but if it looks like too much grief then I'll be on the T3 Outfit, so, one way or another I'll be on a Guzzi :)

Andres
 
Outtomunch said:
Are you taking yours?
Click to expand...

good question.

i hadn't planned on even putting it on the road this year, just don't feel the urge, but it might be nice to take it to sid's if the sun's shining.

actually the only bike that will definitely be on the road is my 1200 :o


i say definitely, but it is a 1200.....:D
 
I fitted the lightest weight throttle springs to my Cali', (36mm carbs) made a big difference, much lighter throttle. They do return the throttle from wide open to shut as well, I was warned that they might not.

I also changed the grips, sounds daft but the ones on the bike when I got it, seemed almost like hard plastic. I didn't realize until after I changed them, that they were slippery, so I had to hold the throttle that much tighter, which seemed like it was a heavy throttle.
 
Cut and pasted from Gutsibits.

Le Mans 1, Le Mans 2, Le Mans 3, Cali 3 (PHF36 model), T5 (PHF36), 1100 Sport Carb [useful Moto Guzzi model information]
Throttle Spring Lighter Action
FUA28650 £5.11 INC VAT
£4.26 EX VAT [this is the price you will pay if you are ordering from outside the EU]
click to view full size Light action throttle spring for Dellorto PHF and PHM carbs. Rated at 1.1kg rather than the standard spring's 1.4kg this spring will ease the strain on your right wrist. This is the lightest spring we recommend for Moto Guzzis

Also known as Guzzi ref. 14938650

quantityadd to basket

Dimensions: 20mm x 128mm uncompressed length

More than 5 in stock

28938650 GU28938650 28 93 86 50 2893 8650
 
Ta Elliminator - I know what you mean about the grips and agree, I have the original hexagonal section ones but I'm loath to replace them; I may have to though.......

Andres
 
the le mans, II, III and possibly later originally have "waffle" pattern grips.

sorry, no pics on google, but i find them comfortable and a decent diameter for winching up the throttle slides :)
 
i know it's only a pair of hand grips, but i like that pic :)
 
They look even better on the bike :)

Just fitted them and I have a useable throttle again. The main prob was the inside edge of the old grip rubbing the cable housing. It was only a leetle bit and impossible to see until cutting them off.

It's now as smooth as a smooth thing and no heavier than my T3 - oh, and defo more comfy to hold.

Now then, who's got some proper crank carb tops they want shot of?

Andres
 
i think there should be a plastic washer between the throttle grip and the body to minimise friction.
i've made them out of old oil cans before now :)
 
Nippy Normans supply Touratech, Wunderlich, Desert Fox and many other makes of accessories.
You must log in or register to reply here.

Similar threads

ELIMINATOR
Iridium spark plugs for California 3, 36mm carbs , electronic ignition. Think it;s Di
Replies
8
Views
1,849
Neil W
Neil W
Captain Black
Carb tops on PD.
Replies
2
Views
1,189
cobbster
cobbster


Back
Top Bottom