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 A7 rollerisation

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Oz1200Guzzi
Don Abbondio
Don Abbondio


Posts : 1773
Join date : 2014-03-13
Age : 62

PostSubject: A7 rollerisation   Wed Aug 24, 2016 10:10 pm

Hi Pete, Gregg

can you tell what kit is needed for:

These are my engine No. : A7 011511 , and chassis No. ZGULPR007AM111388. Is there anyone who can pull this info for me, if possible?

thanks Pete, know you are on holidays but for someone like you it might be quite easy (now ducks for cover and owes another beer or two)

Thanks Gregg a beer I might owe you too - depends who responds quickest!
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beetle
GRiSO
GRiSO


Posts : 3959
Join date : 2013-09-30

PostSubject: Re: A7 rollerisation   Thu Aug 25, 2016 12:23 am

Have you gone and bought yourself an 8V Sport, Tony?


Surprised
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Pete Roper
GRiSO
GRiSO


Posts : 3769
Join date : 2013-05-29
Age : 59

PostSubject: Re: A7 rollerisation   Thu Aug 25, 2016 12:28 am

What bike and year model Tony?
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Oz1200Guzzi
Don Abbondio
Don Abbondio


Posts : 1773
Join date : 2014-03-13
Age : 62

PostSubject: Re: A7 rollerisation   Thu Aug 25, 2016 3:47 pm

2010 Sport with A7 engine, Pete
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Oz1200Guzzi
Don Abbondio
Don Abbondio


Posts : 1773
Join date : 2014-03-13
Age : 62

PostSubject: Re: A7 rollerisation   Thu Aug 25, 2016 3:47 pm

Snot mine but I contact I got in Macedonia - can't get any sense out of his dealer - blinkers i think
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Pete Roper
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Age : 59

PostSubject: Re: A7 rollerisation   Thu Aug 25, 2016 7:11 pm

2010? It'll be a 'C' kit I think. Just ask him if the rocker covers have the 'O'-ring seal around the long plug tube or the thick neoprene gasket that goes between the cover and the rocker carrier/cambox casting.

If it has the early type with the o-ring it'll need a 'C' kit. Later type needs the 'D' kit. Unfortunately none of the Sports ever had the shims installed at the factory so either kit is a 'Heads Off' fitment job.

Pete
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Oz1200Guzzi
Don Abbondio
Don Abbondio


Posts : 1773
Join date : 2014-03-13
Age : 62

PostSubject: Re: A7 rollerisation   Thu Aug 25, 2016 8:10 pm

Awesome, thanks Pete. I'll let him know.
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Barney21
Don Abbondio
Don Abbondio


Posts : 3
Join date : 2016-09-09

PostSubject: Re: A7 rollerisation   Fri Sep 09, 2016 7:17 pm

Now let me preface this by saying there are far more experienced heads on this site than mine.

However I am of an age of BDA and twin cam Fords. I know they were cam operated buckets onto valves.
The similarity in the issue MG is haveing is very similar to the problem we used to have with Fords. And it all came about through the profile of the cam and the radius of the curve on the Camshaft. In Auz. at that time cam grinders could not grind a cam with the correct radius, they were ground in UK. Now the question I ask is the toe of the rocker arm ground to copy the 4v engine or is the 8v a different profile, this could cause the issue.
There has to be some serious " Binding" in the valve train to cause all this damage.
We discovered the problem by assembling the engine with very light springs on the valves and then " Blueing " the rocker arm and cam profile, if the Bluing is wiped off either surface that is the issue.

Just some " Old Fart " technology!
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PostSubject: Re: A7 rollerisation   Today at 5:50 pm

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A7 rollerisation
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