Valve spring shims ~~~

[BILL WZOREK]

Valve spring shims:
When / where do they go and why ( I think I have the last part )

My Bucket list has many ~ many questions besides going & doing things.

THANKS EVERY ONE ~ ~

[41ford1]

The washers are used to set valve seating pressure. Check some of Ol' Ron's postings. They go between the spring and guide on a flathead or the spring and head on an OHV.

[51 MERC-CT]

They are necessary when using GM valves which are longer to achieve the correct pressure,

[BILL WZOREK]

Ok when you check the spring pressure in the spring tester.
How much compression to get the proper # pressure of the spring?

[cadillacoffin]

Do you guys find that the new isky springs to vary much?

[51 MERC-CT]

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Originally Posted by BILL WZOREK

Ok when you check the spring pressure in the spring tester.
How much compression to get the proper # pressure of the spring?

On my 51' Merc, the specs. are 40#- 43# @ 1.89" (suspect Fords are the same )

[Ronnie]

Here u go
https://www.hastingsmfg.com/ServiceT...ng_inserts.htm

R

[Ol' Ron]

That sounds kinda high. I used one .060" shim on a rotating valve assy to get #55/60 with stock springs and Max#1 cam. Engine has been running now for over 10 years.

[51 MERC-CT]

Originally Posted by Ol' Ron

That sounds kinda high. I used one .060" shim on a rotating valve assy to get #55/60 with stock springs and Max#1 cam. Engine has been running now for over 10 years.

You are correct, I made a mistake and copied the figures for the Lincoln EL engine, For the 51 Merc. it should be 40#-43# @ 1.89"

[BILL WZOREK]

THANKS GUYS !!!

Not building Just a Question that I Now Have a answer to.

I hope every one don't mind answering Questions that may
seem like general knowledge to a lot of you ~~~