57 270hp no heater plumbing question
I own several alum 2X4 653 intakes. A couple display a sleeve adapter 3/4 inch O.D. pipe thread , into the manifold with a 5/8 sqr hd pipe plug. Would one expect to see this config for a no heater car or would just a 3/4 pipe plug screwed into the manifold ( omitting the sleeve) be more appropriate?-Regards/Joel Miller 620
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Re: 57 270hp no heater plumbing question
Joel -
I can't document it anywhere, but I wouldn't expect to see an adapter sleeve to accept a smaller diameter plug; it's unlikely that Chevrolet would release two parts as standard equipment (sleeve and plug) when one (the larger plug) would do the job. -
Re: 57 270hp no heater plumbing question
My logic totally agrees with John's ------- removing this sleeve to install a 3/4 inch pipe plug is getting feisty. Have tigged the 5/8 plug into the sleeve so to have the 5/8 plug to get hold of to remove the entire thing but nothing is budging. Have heated both steel plugs welded together and hit manifold with liquid nitrogen while hot. No joy. Seems the sleeve must be about bonded with the manifolf. Guess next move will be to drill out the whole apparatus in small steps until thin enough to roll steel threads out of the alum manifold with a small pick.-----------Other ideas welcome--------Regards/Joel Miler----------The 3/4 OD to 5/8 ID iadapter sleeve is actuall there to accomodate a 5/8 threaded nipple for heater hoseComment
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Re: 57 270hp no heater plumbing question
I would think you'd want to heat the manifold and cool the plug to expand the hole and shrink the plug.Comment
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Re: 57 270hp no heater plumbing question
Joel
I have several if you need one...( never really checked for any sleeves ( one has the carb center sections machined out? )
JoeComment
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