Valve guide machining (rover v8)

hoss · Post by **hoss** » Sat Jun 23, 2007 12:06 pm

Does anyone have the dimensions for bulleting the valves guides?
Also the dimesions of the later oil seal type.

I have early type valve guides an want to machine the tops to fit the later seals.

hoss · Post by **hoss** » Thu Jun 28, 2007 3:49 pm

bump - nobody?

kokkolanpoika · Post by **kokkolanpoika** » Mon Jul 02, 2007 5:19 pm

The dimesions of the later oil seal/guide is 12,5mm.

I have got stage4 bronze valve guides and they are bulleted.
Inlet lenght is 46mm and exchaust is 52mm those are total lenght if you measure at top to top (both are shortened 2mm to suit over 13mm valve lift cam)
And you need lot of porting to suit this typy guides..
But you can use longer guides also.. But i cant say how long? maybe 10mm???

My guides bulleted "area" lenght is inlet 11mm and exchaust 7mm. And i use 7,93mm valve stem diameter..