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Old Jun 5, 2020 | 07:23 PM
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Default Intake manifold attachments

I have several fittings(hose barb, temp sensor) that will not fully seat on the manifold. At least half the threads are still showing. These are 1/2 " npt threads. Should I run a tap or just use more
"muscle"?
For the long haul, is it better to use teflon tape or antisieze or ??

Thanks
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Old Jun 5, 2020 | 08:52 PM
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Originally Posted by Jim71Vette
Should I run a tap or just use more "muscle"?

Neither. Just tighten them enough they won't leak. NPT threads are tapered. The only way to fully seat the fittings is for the taper on the hole to exactly match the taper on the fitting which is not easy to do. But, it is easy to go too far with a tap and prevent the fitting from getting tight at all.

I tend to use teflon based pipe dope but I think you definitely want some type of dope or anti-seize if the fittings and manifold are dissimilar metals. I've used teflon tape on brass fittings with good success.

DC
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Old Jun 6, 2020 | 10:10 AM
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Thanks DC3

The intake is an old Performer 2101. I want to put the temp sensor in the left side water crossover and it needs to seat better to clear the upper hose.
But... now that I did a quick mockup.... I don't think the wire connector will clear the hose.
I think a 90 elbow will work. I just hope water can get to the sensor.



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Old Jun 9, 2020 | 08:09 PM
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While looking for a 90 elbow I also found a 45 elbow. Any thoughts on which one would work better ?

Thanks
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Old Jun 10, 2020 | 03:55 PM
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Snug, not overly tight.
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Old Jun 10, 2020 | 09:55 PM
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Originally Posted by Jim71Vette
Thanks DC3

The intake is an old Performer 2101. I want to put the temp sensor in the left side water crossover and it needs to seat better to clear the upper hose.
But... now that I did a quick mockup.... I don't think the wire connector will clear the hose.
I think a 90 elbow will work. I just hope water can get to the sensor.

Like this? I think I will just buy a different gooseneck. First law of physics.
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Old Jun 11, 2020 | 01:51 PM
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If it's no worse than the picture above, I would slit a piece of old hose and use it as a buffer between the 2.
I think, that I have seen extensions that will raise the water neck up 1/4"+.
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Old Jun 12, 2020 | 12:36 AM
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I would just turn the connector on that temp sensor 90 * so the side of the connector was against the hose...and call it a day. Those parts are going to 'move' together, rather than rub via vibration. The front 'edge' of the connector might cut into the rubber; but the side of it will not.
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Old Jun 12, 2020 | 02:49 AM
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Or, perhaps, something like this?
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Old Jun 15, 2020 | 08:52 PM
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Originally Posted by Big2Bird

Like this? I think I will just buy a different gooseneck. First law of physics.
Mine is worse than this one. The temp sensor seats a little higher and has the "pin" type connector going straight up.
I think a "low profile" elbow will work.... if I can find one.

Thanks
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Old Jul 3, 2020 | 08:53 PM
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Default Forgot the "mock up" pictures




Even if I could fully seat the temp sensor I wouldn't be able to attach the connector.
Ideally, I think, I need to use a water neck that points straight forward or at least gets off the sensor.
But then I would need to find a upper hose that will work without causing any other issues.
I'm trying to find an "elbow" that will fit.
These days it is difficult to drive around looking for parts.
Open to suggestions.

Thanks
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Old Jul 3, 2020 | 10:06 PM
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In this case, I think Id either put the sensor in the head, or get a thermostat housing with a 1/2 npt bung in it.
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Old Jul 3, 2020 | 10:09 PM
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https://www.summitracing.com/parts/m...7/applications
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