Lancia Motor Club

Model Technical and Interest => Aprilia, Ardennes and Ardea => Topic started by: welleyes on 12 November, 2011, 03:44:04 PM



Title: Aprilia tappet clearances
Post by: welleyes on 12 November, 2011, 03:44:04 PM
Can anyone give us the cold tappet clearances for an Aprilia engine?

Stuart Tallack pp Andrew Tallack


Title: Re: Aprilia tappet clearances
Post by: ben on 12 November, 2011, 05:22:23 PM
Ten thou' (which is quarter of a turn on the adjusting screws from zero as they have a 1mm pitch thread)


Title: Re: Aprilia tappet clearances
Post by: GG on 12 November, 2011, 06:32:49 PM
take a look here:

http://gallery.me.com/geoffreyg#100345&view=grid&bgcolor=black&sel=1


Title: Re: Aprilia tappet clearances
Post by: welleyes on 12 November, 2011, 09:00:27 PM
The "Bible" actually says 10 thou hot.

Stuart Tallack pp Andy Tallack


Title: Re: Aprilia tappet clearances
Post by: ben on 12 November, 2011, 10:16:39 PM
I hesitate to contradict the "Bible" but the factory data in the table cited by GG doesn't seem to say anything about the engine being hot.
I have always set mine at 10thou cold. Maybe they don't change much!


Title: Re: Aprilia tappet clearances
Post by: welleyes on 12 November, 2011, 10:56:23 PM
Thank you. Just what we wanted to know.
For "Bible" read English translation of the Italian manual. I presume it was issued with a new car as it is in English (translated by Italians?) and refers to tables and diagrams in the Italian language manual.


Title: Re: Aprilia tappet clearances
Post by: Sliding Pillar on 13 November, 2011, 02:09:08 PM
I always did mine HOT!


Title: Re: Aprilia tappet clearances
Post by: lancialulu on 14 November, 2011, 11:32:42 AM
Just rifling through my Aprilia files I have a data sheet that states HOT 10 thou.

I now know what to do when I start my first full Aprilia service. I assume this is every 5000 miles??

Tim