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 Flat Tappets and Roller Tappets

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alanlemansiv
Don Abbondio
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PostSubject: Flat Tappets and Roller Tappets   Wed Jan 31, 2018 9:23 pm

Hi there GRiSO Guru's,

Can someone tell me if I remove the rocker cover from a 8V motor can I tell if the motor has been rollerised (especially on the earlier models) just by looking at it.
A picture says a thousand words if someone could show pictures of a rollerised motor and a flat tappet motor with the rocker cover removed, I would much appreciate it.


Many Thanks
Alan
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beetle
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PostSubject: Re: Flat Tappets and Roller Tappets   Wed Jan 31, 2018 9:44 pm

Easy.

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Pete Roper
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PostSubject: Re: Flat Tappets and Roller Tappets   Wed Jan 31, 2018 9:47 pm

Thanks Mark. Very Happy
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alanlemansiv
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PostSubject: Re: Flat Tappets and Roller Tappets   Wed Jan 31, 2018 10:35 pm

Hi Mark/Beetle,

Thanks for that a picture truly says a thousand words.

Regards
Alan
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sidrat
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PostSubject: Re: Flat Tappets and Roller Tappets   Thu Feb 01, 2018 5:10 am

So Alan, which ones do you have?
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alanlemansiv
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PostSubject: Re: Flat Tappets and Roller Tappets   Thu Feb 01, 2018 10:23 pm

Hi Sidrat have a Mk 4 Lemans, am thinking of a Sport, GRiSO or Norge 8v, one day after kitchen renos, the other half must be comfortable riding on the back.

Regards Alan
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Pete Roper
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PostSubject: Re: Flat Tappets and Roller Tappets   Thu Feb 01, 2018 10:27 pm

Strike the GRiSO then, it's a dreadful pillion bike. The Sport 1200 is a far happier thing for two-up. Do be aware though that NO 1200 Sport 8V's were built with rollers, they are all flat tappet bikes unless they have been rollerised regardless of the year on the VIN plate.

Pete
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alanlemansiv
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PostSubject: Re: Flat Tappets and Roller Tappets   Sat Apr 14, 2018 3:29 am

Hi Pete,
What year/month did Moto Guzzi make the Norge 8V with the rollerised engine, or did they leave the engines with flat tappets thru the model run till the end. Your thoughts on this is much appreciated.

Alan
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Pete Roper
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PostSubject: Re: Flat Tappets and Roller Tappets   Sat Apr 14, 2018 5:46 am

Linky.

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A few replies down. Bear in mind that the factory’s figures can best be described as ‘Rubbery’. Only way to know for sure with a 2012 is to look. Any 2013 on should be fine.

Pete
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Grisonut
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PostSubject: Re: Flat Tappets and Roller Tappets   Sat Apr 14, 2018 11:26 am

Hey Pete...
Are you aware of any 2013 with flatties?
I swear I saw on some other boards that someone had a 13 with non rollers...like a couple of them fell through the cracks.
Probably a BS story but Luigi and Grappa could make this happen. Very Happy
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Pete Roper
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PostSubject: Re: Flat Tappets and Roller Tappets   Sat Apr 14, 2018 12:52 pm

Given the change over point is *Officially* in the first half of 2012 I’d be very surprised if there were any 2013 plated flat tappet bikes in any of the major ‘Western’ markets. Whether in other places bikes might be described by year of sale rather than manufacture I know not but if they are then of course all bets are off.

I have never seen, nor heard, of a 2013 plated flattie.

Pete
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Grisonut
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PostSubject: Re: Flat Tappets and Roller Tappets   Sat Apr 14, 2018 11:36 pm

That's what I figured but it can be confusing at times with the timing of plating and all...
My bike is titled a 2017 but we now know that Guzzi stopped production of the CARC bikes in mid 2016.
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Pete Roper
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PostSubject: Re: Flat Tappets and Roller Tappets   Sun Apr 15, 2018 12:46 am

With hindsight they may still be dribbling a few GRiSO’s out! They are still being sold here as 2017’s but as far as I know all other CARC bikes are definitely dead.
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