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Fixing leak around intake coolant bypass fitting? #1234723
05/17/12 12:28 AM
05/17/12 12:28 AM
Joined: Jul 2011
Posts: 817
Eugene, Oregon
Secret Chimp Offline OP
super stock
Secret Chimp  Offline OP
super stock

Joined: Jul 2011
Posts: 817
Eugene, Oregon
I have a slightly-more-than-weepy leak coming from my coolant bypass hose fitting on my intake. A blob of Water Weld held it for awhile, but apparently that stuff doesn't like heat and it started getting mushy again and letting it leak. I tried using some JB Stik instead, which almost seemed to work better, but that started seeping from around the edges too.
What can I try to stop this leak? I don't want to take the fitting out, the last time I tried with an aluminum intake the threads got completely screwed up. I don't care what looks pretty, just something I can stick or glop on that will be waterfast and hold up to the heat.


1967 Dodge Coronet Deluxe station wagon

1.03" T-bars, QA1 arms/rods, Cordoba/GM Metric/Volare brake & knuckle, XHDs, Hellwig rear sway, 318 Magnum w/ air gap, 727, 3.23s
Re: Fixing leak around intake coolant bypass fitting? [Re: Secret Chimp] #1234724
05/17/12 01:07 PM
05/17/12 01:07 PM
Joined: Jul 2007
Posts: 1,682
Philadelphia
R
radar Offline
top fuel
radar  Offline
top fuel
R

Joined: Jul 2007
Posts: 1,682
Philadelphia
Why not take the fitting out and put it back in with teflon tape or pipe thread sealant? It's not that big a job...

Re: Fixing leak around intake coolant bypass fitting? [Re: radar] #1234725
05/17/12 01:32 PM
05/17/12 01:32 PM
Joined: Jan 2003
Posts: 25,200
Upper Midwest
M
MoparforLife Offline
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MoparforLife  Offline
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Joined: Jan 2003
Posts: 25,200
Upper Midwest
Quote:

Why not take the fitting out and put it back in with teflon tape or pipe thread sealant? It's not that big a job...


I agree. It isn't a hard thing to do to put some tape or pipe sealer on it. Quit trying ugly band-aides.

Re: Fixing leak around intake coolant bypass fitting? [Re: MoparforLife] #1234726
05/17/12 01:45 PM
05/17/12 01:45 PM
Joined: Jan 2003
Posts: 74,907
U.S.S.A.
JohnRR Offline
I Win
JohnRR  Offline
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Joined: Jan 2003
Posts: 74,907
U.S.S.A.
Just put some Bars leak in it ...








Re: Fixing leak around intake coolant bypass fitting? [Re: MoparforLife] #1234727
05/17/12 01:47 PM
05/17/12 01:47 PM
Joined: Apr 2010
Posts: 4,154
bethlehem pa
M
mikemee1331 Offline
master
mikemee1331  Offline
master
M

Joined: Apr 2010
Posts: 4,154
bethlehem pa
Quote:

Quote:

Why not take the fitting out and put it back in with teflon tape or pipe thread sealant? It's not that big a job...


I agree. It isn't a hard thing to do to put some tape or pipe sealer on it. Quit trying ugly band-aides.


he doesn't want to because of the threads. have you tried heat tolerant silicone?

Re: Fixing leak around intake coolant bypass fitting? [Re: MoparforLife] #1234728
05/17/12 01:53 PM
05/17/12 01:53 PM
Joined: Feb 2007
Posts: 117
southern California
1
1970sixpak Offline
member
1970sixpak  Offline
member
1

Joined: Feb 2007
Posts: 117
southern California
I had a problem with this as well even after using Teflon tape. I went and got a 3/4 inch NPT pipe tap and cleaned up the threads as best I could. I used ARP thread sealer and it fixed it. ARP thread sealer or a high qualer sealer is mandatory IMO if you have weak thread deptness like I had.

Re: Fixing leak around intake coolant bypass fitting? [Re: mikemee1331] #1234729
05/17/12 03:00 PM
05/17/12 03:00 PM
Joined: Jan 2003
Posts: 25,200
Upper Midwest
M
MoparforLife Offline
Too Many Posts
MoparforLife  Offline
Too Many Posts
M

Joined: Jan 2003
Posts: 25,200
Upper Midwest
Quote:

Quote:

Quote:

Why not take the fitting out and put it back in with teflon tape or pipe thread sealant? It's not that big a job...


I agree. It isn't a hard thing to do to put some tape or pipe sealer on it. Quit trying ugly band-aides.


he doesn't want to because of the threads. have you tried heat tolerant silicone?


Any silicone on the outside will have a tendency to leak as it is on the outward side of the pressure push. Why is there always all kinds of time to do and re-due but never time to do it right.

Re: Fixing leak around intake coolant bypass fitting? [Re: MoparforLife] #1234730
05/17/12 03:29 PM
05/17/12 03:29 PM
Joined: Apr 2010
Posts: 4,154
bethlehem pa
M
mikemee1331 Offline
master
mikemee1331  Offline
master
M

Joined: Apr 2010
Posts: 4,154
bethlehem pa
Quote:

Quote:

Quote:

Quote:

Why not take the fitting out and put it back in with teflon tape or pipe thread sealant? It's not that big a job...


I agree. It isn't a hard thing to do to put some tape or pipe sealer on it. Quit trying ugly band-aides.


he doesn't want to because of the threads. have you tried heat tolerant silicone?


Any silicone on the outside will have a tendency to leak as it is on the outward side of the pressure push. Why is there always all kinds of time to do and re-due but never time to do it right.


pretty sure he knows he should take it apart and try getting back together correctly. he clearly said he didn't want to do that because of stripped threads before. as JohnRR said (never occured to me) run some Barrs through it, dry it really well and try some silicone around it. Yes i know about the pressure. it doesn't hurt to try before he gives up and pulls it all apart.

Re: Fixing leak around intake coolant bypass fitting? [Re: mikemee1331] #1234731
05/17/12 03:36 PM
05/17/12 03:36 PM
Joined: Jan 2003
Posts: 25,200
Upper Midwest
M
MoparforLife Offline
Too Many Posts
MoparforLife  Offline
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Joined: Jan 2003
Posts: 25,200
Upper Midwest
I know what he said and if done carefully there should be know worry. I hate trying to seal something pressurized for the outside with a silicone type sealer that is not meant to be for that purpose. High temps will create pressures up to the and past the cap rating pretty easy and (just because the cap pops at 15lbs. pressures can rise higher till bleed off is complete) and getting caught out on the road or in traffic with a hot engine may not be a whole lot of fun. Take a chance and do it right.

Re: Fixing leak around intake coolant bypass fitting? [Re: mikemee1331] #1234732
05/17/12 04:29 PM
05/17/12 04:29 PM
Joined: Jan 2003
Posts: 74,907
U.S.S.A.
JohnRR Offline
I Win
JohnRR  Offline
I Win

Joined: Jan 2003
Posts: 74,907
U.S.S.A.
Quote:

Quote:

Quote:

Quote:

Quote:

Why not take the fitting out and put it back in with teflon tape or pipe thread sealant? It's not that big a job...


I agree. It isn't a hard thing to do to put some tape or pipe sealer on it. Quit trying ugly band-aides.


he doesn't want to because of the threads. have you tried heat tolerant silicone?


Any silicone on the outside will have a tendency to leak as it is on the outward side of the pressure push. Why is there always all kinds of time to do and re-due but never time to do it right.


pretty sure he knows he should take it apart and try getting back together correctly. he clearly said he didn't want to do that because of stripped threads before. as JohnRR said (never occured to me) run some Barrs through it, dry it really well and try some silicone around it. Yes i know about the pressure. it doesn't hurt to try before he gives up and pulls it all apart.




I left out the when I suggested barrs ...

Re: Fixing leak around intake coolant bypass fitting? [Re: JohnRR] #1234733
05/17/12 04:32 PM
05/17/12 04:32 PM
Joined: Feb 2003
Posts: 21,318
Manitoba, Canada
DaytonaTurbo Offline
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DaytonaTurbo  Offline
Too Many Posts

Joined: Feb 2003
Posts: 21,318
Manitoba, Canada
I used jb weld(not the stick) to fasten on a heater core fitting to a radiator. Drove the car like that a bunch and never had an issue with it.

Re: Fixing leak around intake coolant bypass fitting? [Re: JohnRR] #1234734
05/17/12 05:23 PM
05/17/12 05:23 PM
Joined: Apr 2010
Posts: 4,154
bethlehem pa
M
mikemee1331 Offline
master
mikemee1331  Offline
master
M

Joined: Apr 2010
Posts: 4,154
bethlehem pa
Quote:

Quote:

Quote:

Quote:

Quote:

Quote:

Why not take the fitting out and put it back in with teflon tape or pipe thread sealant? It's not that big a job...


I agree. It isn't a hard thing to do to put some tape or pipe sealer on it. Quit trying ugly band-aides.


he doesn't want to because of the threads. have you tried heat tolerant silicone?


Any silicone on the outside will have a tendency to leak as it is on the outward side of the pressure push. Why is there always all kinds of time to do and re-due but never time to do it right.


pretty sure he knows he should take it apart and try getting back together correctly. he clearly said he didn't want to do that because of stripped threads before. as JohnRR said (never occured to me) run some Barrs through it, dry it really well and try some silicone around it. Yes i know about the pressure. it doesn't hurt to try before he gives up and pulls it all apart.




I left out the when I suggested barrs ...


maybe but the rabbit turds work!

Re: Fixing leak around intake coolant bypass fitting? [Re: DaytonaTurbo] #1234735
05/17/12 05:23 PM
05/17/12 05:23 PM
Joined: Jan 2003
Posts: 25,200
Upper Midwest
M
MoparforLife Offline
Too Many Posts
MoparforLife  Offline
Too Many Posts
M

Joined: Jan 2003
Posts: 25,200
Upper Midwest
If you are going to 'jury rig' it JB would be the best bet. Clean and dry and it won't leak. Leave the silicone for what it is meant for.
FWIW I know what he said and the way I read it it was with a different intake. If so do it right.







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