Torque settings for AD1T

[smithjames0]

Hi,

I am trying to find the torque setting for the head bolts on my AD1T engine. Can anyone help?

Regards
James

[MarioNYC]

I have a French - German Service Station manual I am checking for your answer.

[MarioNYC]

And so far I am stumped, can't find torque values even in the service station manual in English for the C models.

[MarioNYC]

Getting closer

https://en.blog.scooter-center.com/tigh ... lambretta/

This should be close enough to what is necessary should nothing else be available.

[kjjohnson]

Torque settings Ape MP models. Don't overtighten or you'll strip threads in the engine casings - Pages 110 & 111 - Ken - https://www.kjjohnson.ca/piaggio/MANUAL ... %20CAR.pdf -

[MarioNYC]

But with those, you have to convert the Kgm to NM or worse yet to ft. lbs.

At least this manual had the numbers, I have been through the service station manuals for the Ape Commercial - Pentaro (has AD1T), the C model, and all model Vespa Service Station Manual 1955 to 1965 models and have seen no such chart.

[MarioNYC]

And the internet is a wonderful place.

Here's an online converter for Kgm (of Kgfm) to nm

https://www.unitconverters.net/moment-o ... -meter.htm

Torque settings Ape MP models. Don't overtighten or you'll strip threads in the engine casings - Pages 110 & 111 - Ken - https://www.kjjohnson.ca/piaggio/MANUAL ... %20CAR.pdf -

[MarioNYC]

I have this for the several Vespa made around the same time

[smithjames0]

Many thanks for the replies.

Ken it looks from you document that the head bolts should be torqued to 1.7 - 2.2 Kgm (dado fissaggio testa ciindro) 16.6NM - 21.5NM

Regards
James

[kjjohnson]

DO NOT use a ratchet gun, use a torque wrench! Ken

[smithjames0]

DO NOT use a ratchet gun, use a torque wrench! Ken

I won't use the 1" socket set either

Thanks for the help

[smithjames0]

Hi,

Could I check that the AD1T does not have a head gasket?

Regards
James

[kjjohnson]

No cylinder head gasket. Gasket only at base of cylinder onto engine casings. Ken

Cast iron cylinder and aluminum cylinder head which expands with heat creates the seal

[smithjames0]

Thanks