head stud nut size

[fizeus]

Hi,
i'm preparing for a valve job and i d like to also check head studs are torqued correctly.

can anyone please tell wich allen size i need?
is there any other specific tool you use to do this job?

Engine is a 1973T

[porschedude996]

I believe It’s a torx head. T50 or T55 on my 1972

[gled49]

It’s a 10mm allen nut.

[porschedude996]

Originally Posted by gled49

It’s a 10mm allen nut.

I believe you are correct.

Huh, I found my torx and my long 10mm allen socket.

It’s been 30 years since I rebuilt my 2.4L.

Trying to recall why I have the big torx.

[Dpmulvan]

Originally Posted by porschedude996

I believe you are correct.

Huh, I found my torx and my long 10mm allen socket.

It’s been 30 years since I rebuilt my 2.4L.

Trying to recall why I have the big torx.

Big torx is probably for your door striker.

[Dpmulvan]

Originally Posted by fizeus

Hi,
i'm preparing for a valve job and i d like to also check head studs are torqued correctly.

can anyone please tell wich allen size i need?
is there any other specific tool you use to do this job?

Engine is a 1973T

I’m assuming you mean valve adjustment? Bent feeler gauge.

[fizeus]

Thank you all for the help.
Just bought a 10 mm Allen socket with different extensions ...

Dpmulvan, yes I mean valve adjustment and I already have a bent feeler gauge (p213b).
I only had to bend it at 90° to be able to slide it between the valve stem and the adjustment screw.

F.

[kimlangley7]

Fizeus:

have you herd of a new technique to adjust the valves on the 911 engine > snapgaps

https://www.youtube.com/watch?v=MsTgFlq_czI

I'm going to use it on my next valve adjustment -

[fizeus]

Yes, I've read a lot o review about this tool and it seems very useful ... but I think I prefer the old method.
I 've done the previous valve adjustment with the help of the famous "Kirk engine valve lash tool" and now I just want to check if gaps are still in specs or not (strangely my engine has developed a clackety-clack sound so I am hoping it's just a valve out of specs more than a worn valve guide)

Let's keep finger crossed

[Dpmulvan]

Originally Posted by fizeus

Yes, I've read a lot o review about this tool and it seems very useful ... but I think I prefer the old method.
I 've done the previous valve adjustment with the help of the famous "Kirk engine valve lash tool" and now I just want to check if gaps are still in specs or not (strangely my engine has developed a clackety-clack sound so I am hoping it's just a valve out of specs more than a worn valve guide)

Let's keep finger crossed

Your clackety clack is probably chain tensioner related.