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914World.com _ 914World Garage _ Brake cyl. hone

Posted by: toon1 Nov 11 2005, 09:03 PM

I am replacing the p/r tube seals in a 1.7 and am wondering if it is possible to use a brake cyl. hone to clean up the bores on the head?

Posted by: bd1308 Nov 11 2005, 09:26 PM

if its a early 1.7, youd better hone good....the smaller pushrod tube seals are extinct now. only the larger 1.8,2.0 and late 1.7 seals are available. This requires a switch-over if you have the early ones.

b

Posted by: Mark Henry Nov 11 2005, 09:40 PM

The holes for the pushrods don't line up with the casting for the VC base. You will hit it and break your stones off.

Posted by: bd1308 Nov 11 2005, 09:41 PM

QUOTE (Mark Henry @ Nov 11 2005, 09:40 PM)
The holes for the pushrods don't line up with the casting for the VC base. You will hit it and break your stones off.

i don't understand.....

b

Posted by: Mark Henry Nov 11 2005, 09:47 PM

Go look at your heads...the holes don't just go straight through....thats why the casting (head) has bumps on the bottom, to offset the pushrod tube holes.

Posted by: sean_v8_914 Nov 12 2005, 12:30 AM

yes, a brake hone will work magic on teh pushrod tube sealing surface. use a dingle ball hone. I do this to my case also but it is , of course, a different size ball hone. O-rings like a really nice surface finish. do not hone it dry. use some oil

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Posted by: sean_v8_914 Nov 12 2005, 12:30 AM

they come in all sizes

Posted by: Mark Henry Nov 12 2005, 06:08 AM

I hate ball hones.

I use a flapper wheel that's just a hair too big. Most tool shops have them.

Posted by: Cap'n Krusty Nov 12 2005, 03:50 PM

QUOTE (bd1308 @ Nov 11 2005, 07:26 PM)
if its a early 1.7, youd better hone good....the smaller pushrod tube seals are extinct now. only the larger 1.8,2.0 and late 1.7 seals are available. This requires a switch-over if you have the early ones.

b

The seals are NOT NLA, and come in the 1.7 engine gasket sets. The Cap'n