quote Originally posted by kjelle69: I was thinking.... Can I grind some material off the valvesprings ? A little bit on each side ?

doubt it. the grinding will put heat into the metal, and that may wreck the "spinginess"

Fiero Store technician thinks:
"We machine or shim accordingly to reach 105 on all valves. We do not
usually run pressures around 120. In this case, the spring seat of the
cylinder head should be machined to lower the spring height slightly
(which will also lower the seat pressure).
"

I guess they are right. To be on the safe side.

I added a column describing the actual diff (material to grind away) It is not Much really !



A related question:

I think I need to remove the studs to reach in with the milling machine.

Is there any feracious gremlins within the project to temporarily remove the studs ?

[This message has been edited by kjelle69 (edited 03-05-2008).]

No you could take a very small amount.. you can eyeball and determine ,, there is a safety factor you can work with, but only a very small amount from retainers(caps) or springs

Can i remove the rocker-studs from the head without any special considerations ?
(Need a little more space around the valve spring seats)

yes

No locktite need or heating or anything ? Maybe best to match where they came from anyway.

locktite sounds good.
dont need to match anything. there are no "mated" parts.

Ok, some serious work here.
Detailed measurments will be published tomorrow.

(You guys could fool me to do anything ... :-)

[This message has been edited by kjelle69 (edited 03-08-2008).]

Ok, after milling down the spring seats I have this ISH and pressure situation:

[This message has been edited by kjelle69 (edited 03-09-2008).]

quote Originally posted by kjelle69: (You guys could fool me to do anything ... :-)

yeah - I feel that sometimes too

.

[This message has been edited by ScotMac (edited 06-12-2009).]