Help!! machine shop botched fire ring job

Help!! machine shop botched fire ring job

10-28-2009, 04:35 AM

#1 (permalink)

LVJUNIOR

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Join Date: Jun 2008 Location: las vegas, nevada Posts: 215

Help!! machine shop botched fire ring job

I blew my brand new head gasket. I just got finished measuring the fire ring grooves the machine shop cut in my head. I pulled out the instructions that came with the fire ring gasket set that I gave to the machine shop. The spec called for 4.508" O.D. +/- 0.001" the closest they got was 4.529" and the farthest they were off was 4.599". Are you kidding me? with a tolerance of one thousandths they were off almost a full tenth. The fire ring is only .105" thick. The groves are supposed to be .120" wide and they varied from 0.115" to 0.126"

Now to see if I can find a way to salvage my brand new ported head. Given that I dont have any consistency in grove size and vary from 4.529" to 4.599" what can I do to make this head usable.

__________________
98 12v 2500 CC 4x4, DD2 inj, #10 plate, georend converter, ported fire ringed head W/ 60# V.S., PDR cam, II 62/14, Detroit locker rear, Detroit trutrack front, 4" exh, 4" lift, 35" BFG mudders, lukes link, DSS steering brace, ATS exh. manifold, Road armor bumper, ViAir compressor, PosiLok, 4w discs

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