Turbo Leak?
07-02-2017, 02:37 PM
#21
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Aren't NPT fittings in good working order supposed to be self sealing? That said, so much of this stuff is black magic and everyone has their own take on it. I haven't had any leaks on the fittings that I can see yet, so I'm not considering sealant. If I did, I might have thought about it.
When I replaced the fittings, things smelled pretty skunked though.
Pat, any input on what you think is going on?
When I replaced the fittings, things smelled pretty skunked though.
Pat, any input on what you think is going on?
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07-02-2017, 02:47 PM
#22
Aren't NPT fittings in good working order supposed to be self sealing? That said, so much of this stuff is black magic and everyone has their own take on it. I haven't had any leaks on the fittings that I can see yet, so I'm not considering sealant. If I did, I might have thought about it.
When I replaced the fittings, things smelled pretty skunked though.
Pat, any input on what you think is going on?
When I replaced the fittings, things smelled pretty skunked though.
Pat, any input on what you think is going on?
Here's a great pictorial write up on threads: https://www.huyett.com/getmedia/3ded....aspx?ext=.pdf
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07-02-2017, 02:53 PM
#23
Aren't NPT fittings in good working order supposed to be self sealing? That said, so much of this stuff is black magic and everyone has their own take on it. I haven't had any leaks on the fittings that I can see yet, so I'm not considering sealant. If I did, I might have thought about it.
When I replaced the fittings, things smelled pretty skunked though.
Pat, any input on what you think is going on?
When I replaced the fittings, things smelled pretty skunked though.
Pat, any input on what you think is going on?
I thought I replied to this already, something about no restrictor. Anyways I would do no restrictor, and reseal the NPT threads with teflon. Prob not tight enough to seal if you put it together without teflon.
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07-02-2017, 03:25 PM
#25
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Nope... not NPT. And no it isn't black magic unlike someone who's still "practicing"
Here's a great pictorial write up on threads: https://www.huyett.com/getmedia/3ded....aspx?ext=.pdf
Here's a great pictorial write up on threads: https://www.huyett.com/getmedia/3ded....aspx?ext=.pdf
Side note: weren't you running a restrictor on your JB turbo?
The teflon lubricates the threads, so they tighten up enough to seal.
I thought I replied to this already, something about no restrictor. Anyways I would do no restrictor, and reseal the NPT threads with teflon. Prob not tight enough to seal if you put it together without teflon.
I thought I replied to this already, something about no restrictor. Anyways I would do no restrictor, and reseal the NPT threads with teflon. Prob not tight enough to seal if you put it together without teflon.
Thanks for all the input so far guys. I know folks have often found many things that have worked for them, but I'm trying to get something together to try next weekend when I finish up this rotation and can breathe a tiny bit.
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07-02-2017, 04:12 PM
#26
No leaks.
If you decide to "tighten" the block fitting at the sender location be careful. They can snap or crack pretty easy then you have real problems.
If it says NPT it isn't self-sealing.
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07-02-2017, 04:43 PM
#27
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Which block fitting are you referring to? I used the teflon thread sealant paste on the feed line where the fitting enters the block! Just didn't do it on the turbo side!
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07-02-2017, 07:26 PM
#30
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I think it's been covered already but in regards to your reply, yes NPT threads which are tapered threads absolutely do use teflon tape or other thread sealer regularly. That is how they are connected in all the millions of pipe tradesmen put down in all the buildings everywhere. Pipe using NPT is what carries water gas and chemicals everywhere and that is what the tape is made for. Now specifically referencing a turbo someone might have recommended against it for one reason or another; I'm not disputing that. Tapered threads have to be super tight a lot of times in order to not leak. As I said earlier I have personally only ever used teflon tape on all tapered threads, but sure you could do it with no sealant or a different sealant as long as it doesn't leak. You can probably deform the brass enough so that it makes a metal to metal seal, but with a steel fitting and a cast turbo housing it might be tougher to get it not to leak with no thread sealer. Just don't put it on the first 1-2 threads so you don't risk clogging the oil feed.[...]
It's a lubricant, used to make sure that you don't snap something before you have enough force on the threads to self-seal.
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07-02-2017, 09:57 PM
#32
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Like it was said before... it's not a sealant. It's a lubricant to make sure you can tighten things enough to get a seal. Not the same thing. It's not semantics at all, it's a totally different function.
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07-03-2017, 12:52 PM
#34
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That wasn't any sort of criticism of you, your knowledge base, or your advice.
Those two things are totally different. The enzymes I know and the number of cars you've worked on has nothing to do with anything. What do my actions during rounds have to do with anything?
Your response is pretty overkill for just having been told that there's a difference between things that reduce friction and things that seal threads... Especially when you brushed it off as semantics when it's not. I mean...why call a radiator a radiator when you can just call it an alternator, right?
Yeesh...
Thanks for the advice I guess? Next time I'll take the tip and start referring to things by using incorrect terminology.
Those two things are totally different. The enzymes I know and the number of cars you've worked on has nothing to do with anything. What do my actions during rounds have to do with anything?
Your response is pretty overkill for just having been told that there's a difference between things that reduce friction and things that seal threads... Especially when you brushed it off as semantics when it's not. I mean...why call a radiator a radiator when you can just call it an alternator, right?
Yeesh...
Thanks for the advice I guess? Next time I'll take the tip and start referring to things by using incorrect terminology.
Last edited by ridethecliche; 07-03-2017 at 01:05 PM.
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07-03-2017, 01:01 PM
#35
That wasn't any sort of criticism of you, your knowledge base, or your advice.
Those two things are totally different. The enzymes I know and the number of cars you've worked on has nothing to do with anything. What do my actions during rounds have to do with anything?
Your response is pretty overkill for just having been told that there's a difference between things that reduce friction and things that seal threads... Especially when you brushed it off as semantics when it's not. I mean...why call a radiator a radiator when you can just call it an alternator, right?
Yeesh...
Thanks for the advice I guess? Next time I'll take the tip and start referring to things by using incorrect terminology.
Those two things are totally different. The enzymes I know and the number of cars you've worked on has nothing to do with anything. What do my actions during rounds have to do with anything?
Your response is pretty overkill for just having been told that there's a difference between things that reduce friction and things that seal threads... Especially when you brushed it off as semantics when it's not. I mean...why call a radiator a radiator when you can just call it an alternator, right?
Yeesh...
Thanks for the advice I guess? Next time I'll take the tip and start referring to things by using incorrect terminology.
He was trying to help, give him a break. Go fix your leak and have fun.
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