Recent Posts

1

General Discussion / Re: is this a lemans 1 head? im a bit stumped

« Last post by Turin on Today at 08:16:17 PM »

Without the valves and a caliper it's hard to check. the 6mm intake bolts holes indicate lemans heads,

Here are some comparison shots I took

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General Discussion / Re: Fitting a 35mm muffler to a 32mm pipe

« Last post by moto on Today at 07:54:56 PM »

Looking good just in time for Stagecoach trail ride tomorrow.

Looking forward to that next year. The bike won't be registered until Spring.

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General Discussion / Re: sacred screw and alternate throttle bodies

« Last post by Kiwi_Roy on Today at 07:50:17 PM »

I got excellent results with this mercury filled dual tube setup.
https://youtube.com/shorts/um5MnfzZXUg?si=AAYVrZUE2ETnD3Bj
As you can see, it does not pulse at all and great for setting the balance at high/ low speed.

Its pretty hard to figure out what you are doing there.
I think mercury should be banned, I once worked on the site of an old chlorate plant where they lost several tons of the stuff into the ground, they ended up taking train loads of the dirt to a hazardous waste disposal site in Alberta
I built an on-line mercury analyzer for a plant treating the groundwater pumped from multiple wells on the site, kept me busy for a year or more.

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General Discussion / Re: 2026 Piaggio and Guzzi models

« Last post by flong on Today at 07:49:00 PM »

Huzo:

What you have done to your 85TT is what I want.  What are the mods you have done?

Frank

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General Discussion / Re: Fitting a 35mm muffler to a 32mm pipe

« Last post by Tkelly on Today at 06:04:50 PM »

Looking good just in time for Stagecoach trail ride tomorrow.

6

General Discussion / Re: V7 850, Evap Canisterectomy thread...

« Last post by YellowDuck on Today at 05:54:08 PM »

Ya that diagram Dr Enzo posted doesn't even have a purge valve.  Not the same at all as the modern V7s, including my 2023. 

I really can't fathom why someone with the exact same model year bike as mine doesn't have the same fueling issue as i had before removing the EVAP.  It's a mystery. But I agree that if there is no problem to solve, leave it alone.  Keeping raw fuel vapors out of the atmosphere is a good thing, so long as the cost of that is not having your bike run like shit. And MG did a great job hiding the cannister - it's not an eyesore like it was on my 2006 air cooled Duc.

Incidentally, a lot of people refer to the little plastic check valve in the tank vent line as a "tip over valve".  But i think it's real function is to ensure that when the purge valve is open, there isn't intake vacuum created all the way back through to the tank.

I've had my EVAP off the bike almost all season and have never smelled even the tiniest wiff of fuel in my garage.  So im not sure that's much of a concern.  YMMV.

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General Discussion / Re: sacred screw and alternate throttle bodies

« Last post by Kaladin on Today at 05:43:22 PM »

I got excellent results with this mercury filled dual tube setup.
https://youtube.com/shorts/um5MnfzZXUg?si=AAYVrZUE2ETnD3Bj
As you can see, it does not pulse at all and great for setting the balance at high/ low speed.

It's been a long time since I saw that much mercury in one place.

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General Discussion / Re: is this a lemans 1 head? im a bit stumped

« Last post by PeteS on Today at 05:23:38 PM »

its bare, no valves.  what else can I measure like it is?

The diameter of the valve seats. Should be slightly over 44 and 37 mm.

Pete

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Bike Builds, Rebuilds And Restorations Only / Re: 1974 Eldo Police Rebuild...Having Fun!

« Last post by Antietam Classic Cycle on Today at 05:12:46 PM »

Thanks Charlie. With regard to the front wheel spacer, here's what I did. I purchased the recommended spacer from McMaster-Carr suggested by This Old Tractor and had my buddy cut it down to the correct length posted by Gregory. I got it home and went to install it and, because I'm a Guzzi noob, it appeared too long so we cut it down until we could get the newly purchased snap ring to fit. So it sounds like you're telling me the original spec would be good, remove that snap ring and go with that. I bet that's why my axle hole on the right side was partially covered when it was tightened down......that would make sense as it was drawn too far to the nut side when tightened. With all the things I'm finding mechanically incorrect with this bike I assumed some one left out the snap ring, since they left out the spacer.
Any alternative tool source for the clutch hub nut? That's a real bite paying $60 for a tool you won't use often.

The dimension (76 mm long) on This Old Tractor is correct. As I wrote previously, one bearing will be fully inserted and secured with a circlip and the other will be flush, or nearly so, with the outer edge of the bearing carrier.

You can make your own clutch hub nut tool - an old socket of the appropriate diameter and an angle grinder or even a hacksaw. Or modify a tool purchased on Amazon to work as shown here:
https://www.thisoldtractor.com/moto_guzzi_loopframe_clutch_hub_securing_nut_tool_14912600.html#option_2

Here's information on the bolt size needed to use the clutch hub as an alignment and compressing tool.
https://www.thisoldtractor.com/moto_guzzi_loopframe_clutch_plate_spline_alignment-_centering-_and_pressure_plate_compression_tool_-_using_a_clutch_hub_and_a_bolt_-30906500-.html
Here's a photo of the spacer Les Price made:

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General Discussion / Re: is this a lemans 1 head? im a bit stumped

« Last post by amamet on Today at 05:10:34 PM »

its bare, no valves.  what else can I measure like it is?