Valve Job Specs needed

[txhokie4life]

Can't find the specs for a 3.4L 99 996 heads.

I need the specs for the valve seat angles and widths? Valve guide clearance would be helpful, also.

I have the valve seat heights from an previous inquiry 1.69-1.70"

thanx,

M

[logray]

Bump! Need this too!

[logray]

Regarding valve guide clearance:

courtesy Macster on rennlist, from a 987 forum in this post about a 9PA:

"...964 valve clearances are 0.0011 inches to 0.0022 inches with a wear limit of 0.0059 inches..."

"...I mentioned the 964 valve clearance numbers and both [Porsche techs] said those numbers are very close to the valve clearances for the new engines, in fact most Porsche engines. There's no magic involved..."

But that still leaves open the 3 (or 5) way angles and widths, no where to be found.

Surely someone has this info.

[logray]

Here are the angles they used for the valve job:

30 - 60 -45

Ex guides were between .0015 and .0025 (except for the 5 that they replaced)

In guides were between .0012 and .002

Stem heights were 1.695" to 1.702"

They also said anyone would be crazy to run guides that are nearing .0059" wear.