Propane is more than enough for these types of rods. Map gas only burns
a few hundred degrees hotter than propane, unless you use oxygen.
Straight thread should be fine. The purpose of the tapered NPT thread
is form a mechanical seal but since you are going to braze straight
thread should be fine. I sealed a radiator hole in the fins with the
Forney rods no leaks, so a brazing a tapped hole should be more than
adequate.
On 9/16/2019 1:47 PM, Darrell Walker wrote:
> Hi Peter,
>
> Thanks for the reply. Is propane or MAP gas enough heat for those rods?
>
> I forgot to mention, the pipe is 5/8â??. I could drop down to 1/2â??
> (thatâ??s what I was going to do in the copper, then up to 5/8â?? with a
> brass hose barf). But since Iâ??m brazing it, would straight threads be OK?
> Technically, there is a 5/8â?? NPT size defined, but Iâ??ve not found any
> taps or dies in that size.
>
> -Darrell
>
>> On Sep 16, 2019, at 10:32 AM, Peter J. Thomas <pj_thomas@comcast.net> wrote:
>>
>> Drill and tap aluminum, then solder with aluminum solder rods. HD carries
>> Bernzomatic AL3 rods, though I like the Forney Easy-Flo Aluminum Brazing
>> Rod sold at Tractor Supply better.
>>
>> On 9/15/2019 2:00 PM, Darrell Walker via Shop-talk wrote:
>>> Iâ??m adapting a Land Rover intake manifold for use on my TR8. One thing I
>>> need to do is add a connection from the manifold to feed the heater. There
>>> is a place on the manifold that will work perfectly.
>>>
>>> My initial plan was to tap the manifold for a copper fitting. But will
>>> there be an issue with copper threaded into aluminum?
>>>
>>>
>
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