Gary Lewis Posted January 3, 2023 Share Posted January 3, 2023 May be getting a "free" rotary table today. 3-Jaw, I'll plasma cut the inner circle, clamp using the inner circle, cut the outer, then clamp to the outer and finish the inner. Aldo's other trick.... On my '86 Flareside with EFI 302, Running rough He diagnosed "EGR voltage out of spec" we installed a new one, still got "EGR out of spec" so we could have spent hours tracing vac leaks and other stuff, but he knew on the new EGR's the "plunger" is not as long as original FORD, so with a little metal epoxy, he built up the plunger, and no more "EGR voltage out of spec":nabble_smiley_good: Ron - That sounds like it should work, but when do you taper it? Or, do you start with material that has a taper? As for the EGR, the epoxy held up to that heat? Link to comment Share on other sites More sharing options...
reamer Posted January 3, 2023 Author Share Posted January 3, 2023 Ron - That sounds like it should work, but when do you taper it? Or, do you start with material that has a taper? As for the EGR, the epoxy held up to that heat? Never had an EGR issue after that. On Prototype I tapered first then cut the diameters. With steel I mat cut dia's first then taper, this way there is less material to machine... Link to comment Share on other sites More sharing options...
Gary Lewis Posted January 3, 2023 Share Posted January 3, 2023 Never had an EGR issue after that. On Prototype I tapered first then cut the diameters. With steel I mat cut dia's first then taper, this way there is less material to machine... I guess the epoxy held. But, speaking of holding, how are you going to hold the shim to cut the taper? Link to comment Share on other sites More sharing options...
James191145 Posted January 4, 2023 Share Posted January 4, 2023 I suppose he could tack it to a heftier piece of material that is already 1.5 degrees and flycut. Link to comment Share on other sites More sharing options...
reamer Posted January 5, 2023 Author Share Posted January 5, 2023 I suppose he could tack it to a heftier piece of material that is already 1.5 degrees and flycut. Magnetic chuck... Link to comment Share on other sites More sharing options...
Gary Lewis Posted January 6, 2023 Share Posted January 6, 2023 Magnetic chuck... I always wished I had one of those. Would have made a lot of things a lot easier. Link to comment Share on other sites More sharing options...
James191145 Posted January 6, 2023 Share Posted January 6, 2023 So you plan on using a surface grinder? I would be weary of machining with a shell mill or flycutter on a mag chuck. Link to comment Share on other sites More sharing options...
reamer Posted January 21, 2023 Author Share Posted January 21, 2023 So you plan on using a surface grinder? I would be weary of machining with a shell mill or flycutter on a mag chuck. Started with 0.250 stock, Used my rotary table the open the ID to correct spec, then cut slots. Face mill at 1.250 degree of table tilt, and finish with 4-point flycutter. Link to comment Share on other sites More sharing options...
Gary Lewis Posted January 21, 2023 Share Posted January 21, 2023 Started with 0.250 stock, Used my rotary table the open the ID to correct spec, then cut slots. Face mill at 1.250 degree of table tilt, and finish with 4-point flycutter. Looks excellent! When are you going to install it? Link to comment Share on other sites More sharing options...
reamer Posted January 21, 2023 Author Share Posted January 21, 2023 Looks excellent! When are you going to install it? Tomorrow I may pull the '73 Bronco out of "hiding" and ensure fit on both RH and LH, with the thickest part up (for Negative camber adjustment) and then thickest part on bottom for Positive camber adjustment. Verifying slot position for all 4 positions. I say four positions because on the '78 and up Bronco and F-150 they have five studs holding the spindle to the knuckle, 4 studs are 3" apart. the top 2 are 3.5" apart,= staggered. So top RH and top LH are not in the same position, and of course bottom RH and LH are not the same either = 4 positions. I want to get the slots to cover all four....1 shim for what ever you need. Link to comment Share on other sites More sharing options...
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