Fixing leak around intake coolant bypass fitting?

Posted By: Secret Chimp

Fixing leak around intake coolant bypass fitting? - 05/17/12 04:28 AM

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.

Posted By: radar

Re: Fixing leak around intake coolant bypass fitting? - 05/17/12 05:07 PM

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...

Posted By: MoparforLife

Re: Fixing leak around intake coolant bypass fitting? - 05/17/12 05:32 PM

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.

Posted By: JohnRR

Re: Fixing leak around intake coolant bypass fitting? - 05/17/12 05:45 PM

Just put some Bars leak in it ...

Posted By: mikemee1331

Re: Fixing leak around intake coolant bypass fitting? - 05/17/12 05:47 PM

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?

Posted By: 1970sixpak

Re: Fixing leak around intake coolant bypass fitting? - 05/17/12 05:53 PM

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.

Posted By: MoparforLife

Re: Fixing leak around intake coolant bypass fitting? - 05/17/12 07:00 PM

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.

Posted By: mikemee1331

Re: Fixing leak around intake coolant bypass fitting? - 05/17/12 07:29 PM

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.

Posted By: MoparforLife

Re: Fixing leak around intake coolant bypass fitting? - 05/17/12 07:36 PM

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.

Posted By: JohnRR

Re: Fixing leak around intake coolant bypass fitting? - 05/17/12 08:29 PM

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 ...

Posted By: DaytonaTurbo

Re: Fixing leak around intake coolant bypass fitting? - 05/17/12 08:32 PM

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.

Posted By: mikemee1331

Re: Fixing leak around intake coolant bypass fitting? - 05/17/12 09:23 PM

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!

Posted By: MoparforLife

Re: Fixing leak around intake coolant bypass fitting? - 05/17/12 09:23 PM

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.