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 GRiSO Head Protectors

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PostSubject: GRiSO Head Protectors   GRiSO Head Protectors Icon_minitime1Fri Jan 23, 2015 2:04 pm

I often contemplate the design of the 8V tappet covers which don't allow fitment of the knuckle duster type head protectors often seen on older 2V pushrod engines.
It seems that most 8V tip overs result in tappet cover abrasions or holes, and even some head fin damage.
Crash bars are ugly and as reported on other forums, some suffer from poor fitment and ineffective crash protection.

My theory;
1. Using a damaged cylinder head as a jig, bolt down a tappet cover as per normal to prevent warping.
2. Weld four pre-drilled and tapped lugs around the out edge of the tappet cover.
3. Repaint it.
4. Laser cut or CNC a pair of cylinder head protectors to suit.

Could be done on an exchange basis by any enterprising ghetto member ..............................................

GRiSO Head Protectors 1975_Moto_Guzzi_Motor_resize

Or even something like this from a Cali 1400
http://i.ebayimg.com/00/s/MjQ0WDQwNg==/z/amQAAMXQI5tRgTzB/$(KGrHqN,!rMFG!IFN3c6BRgTz!tEl!~~60_12.JPG
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sidrat
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PostSubject: Re: GRiSO Head Protectors   GRiSO Head Protectors Icon_minitime1Fri Jan 23, 2015 7:42 pm

Yes i like the idea of the old head protectors for the 8v, does the picture you have uploaded fit them?
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PostSubject: Re: GRiSO Head Protectors   GRiSO Head Protectors Icon_minitime1Fri Jan 23, 2015 7:52 pm

Pic is just an example of the knuckle duster type for a round fin, will not fit the G.
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MalG
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PostSubject: Re: GRiSO Head Protectors   GRiSO Head Protectors Icon_minitime1Thu Jan 28, 2016 9:32 am

This worked well for the older square fins - of course it was straight when new, but you get the idea - no welding involved, just longer bolts.

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kmartin
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PostSubject: Re: GRiSO Head Protectors   GRiSO Head Protectors Icon_minitime1Sun Mar 06, 2016 3:57 am

I think I read about 6 years ago that the 4 valve heads are put together in a manner that makes this kind of guard dangerous. I recall that there is a good chance of inflicting additional damage beyond the cosmetic. Maybe Pete can clarify or call BS on my claim?

Keith
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beetle
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PostSubject: Re: GRiSO Head Protectors   GRiSO Head Protectors Icon_minitime1Sun Mar 06, 2016 7:29 am

If you're talking about a guard that attaches via the valve cover screws, then yes. You could shear the support pillars right off the cam box. Can you say 'expensive'?
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Steak
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PostSubject: Re: GRiSO Head Protectors   GRiSO Head Protectors Icon_minitime1Sun Mar 06, 2016 9:17 am

I think the best bet is just to get an extra pair or two of the valve covers.  Cheapest way to go in the long run.  I just picked up a lightly used RH cover for $10!

Minor rash can be polished out and repainted, which is a great opportunity to get funky and try a different color scheme.

Here's a little VHT Cast Iron Metallic for ya... Thumbs Up

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2012 MOTO GUZZI GRiSO 1200SE

2013 MOTO GUZZI STELVIO 1200NTX - Orange Blossom Special
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