Valve guide punch

[Allan curtis]

Wanted a valve guide punch to remove the valve guides on my 1946 Austin Ten gs1
Allan Curtis 07752120069 Allan 4846@sky.com

[Austin ollis]

Hi Allan
You wont remove valve guides with a punch you need a better tool than a simple punch, where abouts in the country are you based I am based in Sheffield and could help you out if you were close on

Regards Ollis

[Allan curtis]

Thanks for your reply
I have a service manual that said to drift the guides out with a suitable punch this will be my first time to this procedure.what tool do you suggest I use.I am in South wales
Regards
Allan

[peter_winney]

Newnes says "If new guides are necessary the old ones can be driven out from the top and new ones driven in from the same direction" (Vol 2 - Austin 10 Engine by W T Mead MIMT) It does not say what tool to use but to direct the blows of the hammer some kind of drift would be useful. Perhaps the tommy bar from a box spanner would be the right size.

[phil_taylor]

I have used a stepped steel punch - the bottom part is the valve stem diameter and the top part bigger and use a brass washer on the step to avoid damaging the top edge of the guide. Where they can be obtained I do not know? A good friend gave it to me 45 yrs ago!!

[Allan curtis]

Thanks for your reply I will make some enquires about any local engineering company to have one made.I have never removed valve guides before and am a bit worried about damaging the engine b lock so I will be very careful and rush anything
Regards
Allan

[6350_William_French]

Hi

You may be better off taking the block to a friendly engineering firm and getting them to use a hydraulic press to remove and insert the new guides, its a bit less brutal them using a drift.

from Bill French

[phil_taylor]

I have done this to about 7 engines without any problem - particularly if you put the new guides in the freezer before fitting. The time is taken to make brass washers from old rally plaques (which we have many!) The old guides seem to move quite easily with a reasonable clout. Make sure you do not push the new ones too far or you won't be able to fit the tappets and will have to drive the new ones right through and do it again. Been there!!!
I am no engineer - I learnt by experience and listening to proper mechanics. It is also a matter of judgement whether the guides need doing - I do not renew them on all engines -sometimes only the inlet ones.
Good luck
Phil

[Allan curtis]

Thank for the advice I hope to be able to do the work in the next couple of days
Regards
Allan