Originally posted by Pole120:
Originally posted by scottd60:
I would recommend going to 100 deg countersink/flathead screws. You will like the results much better...less invasive to the TB shaft and better hold on the thin .062" TB plate 
I've noticed this, and was looking into a 90degree 30%reduced height fastener, but can only locate them in standard thread, no metric.
In addition i was only able to locate standard thread for 100 degree screws.
So in both cases(90 or 100 degree) i'm stuck with what i've got at the moment untill i can locate a supplier for either of the two options, it works well but i am on the lookout for another method.
open the holes up for the next standard thread (10-32) with a #21 drill (.059) and tap...problem solved. The screw head is ~0.040 bigger in diameter then the originals screws but with the 100 deg. flat head it is not a problem. Or...you could stay on the smaller side (8-32) and and drill the holes out for locking helicoils instead. Both will work just fine and are easily obtained at most hardeware suppliers.
-Scott
Scott
2000 Contour SVT #1464
Mustang Dyno: 171.6hp/145.3lb
Dynojet Dyno: 171.1hp/148.9lb
1989 20th Anniversary Turbo T/A "Indy 500 Pace Car"
#1376 of 1550 All Original, 46k with a few mods
2002 F150 SuperCrew
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