Pedestal mount rocker help

[9 Deuce GT]

I just finished installing a TFS Stage 1 cam in my '92 Mustang. When I tried to install the FMS roller rockers, I ended up using shims. The problem is, I need to get 2 shim kits to get the right preload. I thought I remember reading that you cam only go to .090 when using shims. So this got me thinking. I tore down the rocker system, and decided to measure the thickness of the shims. I was under the assumption that the 2 different sized shims were .030 and .060 thick. When I measured the shims, the thin ones are .020 and the thick ones are .035. So now I am a little confused. All but one of the intake rockers need one.020 shim, and two .035 shims. The exhaust rockers need one .020 shim and one .035 shim. The biggest amount of shims totals .090. I examined each valve tip for roller wear before I installed the shims, and I tried the marker method after I used the shims. The marks are a little bit toward the intake side, but the wear pattern is tight. slightly under the .080 range. Would this setup with shims be okay, or do I need different length pushrods?

 

[rd]

From memory, I thought the Crane Cams shim kit was like you described it. I bought it, installed some during a chase that turned out to be a vacuum leak, and then I removed them.

If the roller contact is near the center, I would not worry so much. If the piston to valve clearance is good, and there is no obvious mismatch or binding in the rockes, it should work, especially with the roller tips.

 

[9 Deuce GT]

A little help here!

 

[RYC CUKR]

You can also get shim kits through www.summitracing.com. Not gonna really help if you need them right now but they do sell shim kits for pedestal mount heads. They have a ford kit with .30 and .60 shims and a crane kit. Here is the part # for the ford kit FMS-M-6529-A302 it costs like $8.88. Hope this helps