Author Topic: Timing Chain Tensioner CARC 2 Valves  (Read 699 times)

Online skippy

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Timing Chain Tensioner CARC 2 Valves
« on: February 03, 2021, 04:24:18 PM »
I am with Huzo on the need for better timing control on the 2 valve big block motors. I certainly would like to go with a set of gears but alas no one seems to make such a critter specifically for the big blocks after the late 90's.
So the next best thing is some sort of an improvement on that tiny little pawl the factory installed on our motors. I admire Huzo for fitting a Valtech on his motor and all of the effort it required.
Have any of you given one of these a try?
 https://www.mgcycle.com/index.php?main_page=product_info&products_id=2386

Looks like the cats meow.

Skippy
06 1100 Breva
20 V85TT

Offline lucian

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Re: Timing Chain Tensioner CARC 2 Valves
« Reply #1 on: February 03, 2021, 04:41:34 PM »
That's the one you want. basically the same as the Valtec with a different mounting arrangement.  :thumb:

Online Antietam Classic Cycle

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Re: Timing Chain Tensioner CARC 2 Valves
« Reply #2 on: February 03, 2021, 05:11:30 PM »
Joe Caruso could most likely make a set of gears for you.
https://woodburymotomedia.com/moto-guzzi-timing-gears-by-joe-caruso/
Charlie
http://www.AntietamClassicCycle.com
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Online Huzo

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Re: Timing Chain Tensioner CARC 2 Valves
« Reply #3 on: February 03, 2021, 06:05:35 PM »
Joe Caruso could most likely make a set of gears for you.
https://woodburymotomedia.com/moto-guzzi-timing-gears-by-joe-caruso/
I’ve been talking to him today and he is currently dormant, but he is “gearing up” to recommence as soon as COVID restrictions allow.
My set for the Norge are on the books.

Wildgoose Chase Moto Guzzi

Re: Timing Chain Tensioner CARC 2 Valves
« Reply #3 on: February 03, 2021, 06:05:35 PM »

Online skippy

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Re: Timing Chain Tensioner CARC 2 Valves
« Reply #4 on: February 08, 2021, 11:40:09 AM »
I’ve been talking to him today and he is currently dormant, but he is “gearing up” to recommence as soon as COVID restrictions allow.
My set for the Norge are on the books.

Looks like Huzo will get the first set of gears Down Under and I will have the next set out here in Colorado.

I have been in communication with Joe over the last few days trying to figure out which of the four cam gears I have on my bike. Based on engine number it looks like the same one Huzo (and all subsequent 2 valve motors) has.

I will open up my timing chest here in the near future just to double check.

I know this is the pricy way to go but what the heck.

Skippy
06 1100 Breva
20 V85TT

Online Huzo

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Re: Timing Chain Tensioner CARC 2 Valves
« Reply #5 on: February 08, 2021, 12:57:15 PM »
I am going into mine today, to check that the work I did has stood up to the last 10,000 k.
I’ll photograph everything in there. I was moved to install the better tensioner as much for the noise reduction as
anything else.
https://youtu.be/C3wsYLPEoYA
« Last Edit: February 08, 2021, 12:59:34 PM by Huzo »

Online Huzo

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Re: Timing Chain Tensioner CARC 2 Valves
« Reply #6 on: February 08, 2021, 01:12:16 PM »
Looks like Huzo will get the first set of gears Down Under and I will have the next set out here in Colorado.

I have been in communication with Joe over the last few days trying to figure out which of the four cam gears I have on my bike. Based on engine number it looks like the same one Huzo (and all subsequent 2 valve motors) has.

I will open up my timing chest here in the near future just to double check.

I know this is the pricy way to go but what the heck.

Skippy
I take the forks out of mine every 20,000 k to empty and flush them. It is just so much more accessible with the front end off and it is almost due now..
So “hold my hand Nurse, I’m going in for a look..”

Online Huzo

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Re: Timing Chain Tensioner CARC 2 Valves
« Reply #7 on: February 08, 2021, 05:39:11 PM »
Well it took 2 hrs to get this far..





This modification has around 10,000 k and has shown itself to be an ok thing to do.
Absolutely no deterioration of the mechanicals and not really very hard in retrospect.
BTW..
The timing is not out, it’s just stopped at this point.
« Last Edit: February 08, 2021, 05:41:35 PM by Huzo »

Offline lucian

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Re: Timing Chain Tensioner CARC 2 Valves
« Reply #8 on: February 08, 2021, 06:20:05 PM »
Nice work, two hours  :thumb:  Feel better now about stuffing one of those blades in my 850.  As much as a gear set is a sexy alternative, I think  I can live with the chain and I actually like the mechanical noises , as long as they are supposed to be there.  Curious how the blade face wears in.Have you had a look?  I envision three grooves from the chain link plates.

Online Huzo

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Re: Timing Chain Tensioner CARC 2 Valves
« Reply #9 on: February 08, 2021, 07:30:16 PM »
Nice work, two hours  :thumb:  Feel better now about stuffing one of those blades in my 850.  As much as a gear set is a sexy alternative, I think  I can live with the chain and I actually like the mechanical noises , as long as they are supposed to be there.  Curious how the blade face wears in.Have you had a look?  I envision three grooves from the chain link plates.
I was going to check that as a priority, but it involves removing the blade or hyper flexing it for the examination.
I felt it was a bridge too far.

Online Huzo

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Re: Timing Chain Tensioner CARC 2 Valves
« Reply #10 on: February 10, 2021, 06:13:58 AM »
I noticed a strange thing..
If you look at the spring in this shot



You’ll notice that the bottom coil is able to touch the casing and indeed there was a small mark where it may have been.
I took the blade out and reversed the spring to give more clearance.



Offline lucian

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Re: Timing Chain Tensioner CARC 2 Valves
« Reply #11 on: February 10, 2021, 08:56:19 AM »
So, any discernible wear on the blade?  :popcorn:

Online Huzo

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Re: Timing Chain Tensioner CARC 2 Valves
« Reply #12 on: February 10, 2021, 09:42:14 AM »
So, any discernible wear on the blade?  :popcorn:
No mate.
Light witness marking, but virtually none.

Online PJPR01

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Re: Timing Chain Tensioner CARC 2 Valves
« Reply #13 on: February 10, 2021, 10:07:01 PM »
Huzo...how did you know that this was an issue to be addressed?  Was it by sound or feel or something else that suggested the tensioner needed replacing?

Wondering if I need to bookmark this and add it to my future 100K mileage check at some point in the far future.
Paul R
2015 Red/Black Griso
2008 Silver Norge
2002 V11 Scura

Online Huzo

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Re: Timing Chain Tensioner CARC 2 Valves
« Reply #14 on: February 11, 2021, 02:15:28 AM »
Huzo...how did you know that this was an issue to be addressed?  Was it by sound or feel or something else that suggested the tensioner needed replacing?

Wondering if I need to bookmark this and add it to my future 100K mileage check at some point in the far future.
There was a persistent cacophony of sound in the lower timing chest area that I did not know how to pinpoint.
Also I had opened the chest to install a new chain pre emptively at 180,000 k.
It was then that I discovered the feebleness of the standard tensioner and when I found that it was only the casting lump in my way, I rang Pete and he said there was nothing preventing it’s removal and subsequent installation of the Valtek.
Bang...!

Online PJPR01

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Re: Timing Chain Tensioner CARC 2 Valves
« Reply #15 on: February 11, 2021, 09:11:41 AM »
Time to break out the stethoscope then...good to know!
Paul R
2015 Red/Black Griso
2008 Silver Norge
2002 V11 Scura

 

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