I'm not sure what this is - Page 2 - Miata Turbo Forum - Boost cars, acquire cats.

Welcome to Miataturbo.net   Members
 


General Miata Chat A place to talk about anything Miata

Reply
 
 
 
LinkBack Thread Tools
Old 02-13-2009, 12:04 AM   #21
Antisaint
iTrader: (17)
 
Vashthestampede's Avatar
 
Join Date: Feb 2007
Location: Danbury, CT
Posts: 4,659
Total Cats: 54
Default

Quote:
Originally Posted by thegizzman View Post
Thats what I used and Ive done it twice, does that stuff take a wile to cure all the way. I'm about to take it off and use the whole tube of permatex on there.
I put it on my fuel rail still wet with gas and within 10 minutes I had the car running with no leaks. So the setup time is crazy quick, I wouldn't redo it again.

Take a rag and simple green that area, dry it, start the car and take a look. Quick look says feed line, but gravity doesn't agree.

Vash-
Vashthestampede is offline   Reply With Quote
Old 02-13-2009, 12:10 AM   #22
Elite Member
iTrader: (15)
 
patsmx5's Avatar
 
Join Date: Aug 2007
Location: Houston, TX
Posts: 8,797
Total Cats: 248
Default

Quote:
Originally Posted by Vashthestampede View Post
Use a good thread sealant and tighten that feed line again. I hate teflon tape to death.

Amazon.com: Permatex 56521 Hi-Performance Thread Sealant. 50 ml.: Automotive

I used some type of Permatex stuff on my dual feed fuel rail. The tape kept leaking, so after a couple times I used the sealant, and 10 minutes later no leaks.

EDIT: On second thought, the feed line looks dry. From the looks of the photo its whatever is above the feed line (knock sensor really?) that is leaking.

Vash-
Teflon isn't a sealant. If you are assembling two tapered fittings, it's common to use teflon tape. This lubricates the threads and allows the fittings to get much tighter than they would without the teflon. As the tapered parts are tightened, the threads slightly deform as the two tapers meet, and they crush seal. 100% metal to metal contact around the perimeter and you have a leak free connection that will NEVER leak because there is no seal to blow, no gasket to leak, no sealant to blow out, etc. It's all metal to metal. The teflon is only a lubricant to allow for repeatable, accurate tightening to achieve the crush seal.

If you have a hose clamp over a braided stainless line, there's your leak. And you won't be able to fix it either. Not using a hose clamp. It will always leak without the proper compression fittings that hold the hose against the fittings.
patsmx5 is offline   Reply With Quote
Old 02-13-2009, 12:23 AM   #23
Antisaint
iTrader: (17)
 
Vashthestampede's Avatar
 
Join Date: Feb 2007
Location: Danbury, CT
Posts: 4,659
Total Cats: 54
Default

Quote:
Originally Posted by patsmx5 View Post
Teflon isn't a sealant. If you are assembling two tapered fittings, it's common to use teflon tape. This lubricates the threads and allows the fittings to get much tighter than they would without the teflon. As the tapered parts are tightened, the threads slightly deform as the two tapers meet, and they crush seal.
I always heard it called thread seal tape. Obviously not a sealant, more like a puddy once compressed.

So I assume teflon is used only for tapered threads? You learn something new everyday here....sometimes more.

Vash-
Vashthestampede is offline   Reply With Quote
Old 02-13-2009, 12:30 AM   #24
Elite Member
iTrader: (15)
 
patsmx5's Avatar
 
Join Date: Aug 2007
Location: Houston, TX
Posts: 8,797
Total Cats: 248
Default

Quote:
Originally Posted by Vashthestampede View Post
I always heard it called thread seal tape. Obviously not a sealant, more like a puddy once compressed.

So I assume teflon is used only for tapered threads? You learn something new everyday here....sometimes more.

Vash-
Yes. It will not adhere to anything or seal anything. You use adhesives and sealants for things that need adhesive and sealing properties.
patsmx5 is offline   Reply With Quote
Old 02-13-2009, 04:22 AM   #25
Junior Member
Thread Starter
 
Join Date: Sep 2008
Location: chicago
Posts: 49
Total Cats: 0
Default

Just to clear this up, if your thinking I used teflon tape I didn't, I used the permatex thread sealant and tightened the fittings as tight as I could.
thegizzman is offline   Reply With Quote
Old 02-13-2009, 04:45 AM   #26
Elite Member
iTrader: (1)
 
NA6C-Guy's Avatar
 
Join Date: Feb 2008
Location: Birmingham Alabama
Posts: 8,038
Total Cats: 43
Default

Well, the echo what Pat has already said... I also think its the knock sensor. From what little I know about knock sensors, some or most (or all, I dont know) are filled with fluid. Looking at the pictures it looks like the end of the knock sensor is beat to ****, or has a crack in it, and is leaking its contents. So as already said, I think your wasting you time looking for an oil leak. If it were an oil leak, why would it have **** its load all at once, in that one place and then quit. If it were leaking around the fitting, it would be leaking all down the block by now. Makes no sense.

Last edited by NA6C-Guy; 02-13-2009 at 05:09 AM.
NA6C-Guy is offline   Reply With Quote
Old 02-13-2009, 12:25 PM   #27
Junior Member
 
Join Date: Jan 2007
Location: EXTREME Southern Illinois
Posts: 281
Total Cats: 0
Default

That's the same knock sensor that DSM's use. That is some sort of sealant that they cover the end with. Originally it feels like a soft epoxy, but later it degrades into sticky goo. They all do that eventually but it doesn't seem to bother them and they still work fine. If it's the sealant then it will feel like some kind of slimy adhesive or tar if you try to wipe it off.
DammitBeavis is offline   Reply With Quote
 
 
Reply


Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 10:59 PM.