thasac

iTrader: (3)

For the heater hose nipple and sensor(s) which is the preferred method:

Teflon tape or teflon paste?

I have the please of doing this with the engine out of the car. I really really really do not want to fix leaks once this engine is in the car. Any other suggestions/tips aside from making sure the t-stat seal is seated in the housing?

-Zach

Fireindc

iTrader: (13)

The begi reroute recommended permatex. i used the original permatex, which is permatex 1.

NO IDEA how it seals yet, but i'd be very surprised if it leaked from anywhere i sealed with this ****.

Leafy

iTrader: (1)

I know on my begi, the only place it doesnt leak is the threads where I used teflon tape. Just made sure to not put them on the first couple so its less likely to get pulled into the coolant system. But, **** the paper gaskets sideways with a circular saw blade.

Fireindc

iTrader: (13)

I'm pretty damn sure I wont have any issues with the permatex, those threads were sealed and the stuff hardens up quite a bit when it dries. Plus it's made for **** like that.

The paper gaskets on the other hand you have me concerned about. I didn't put any RTV or anything on them, and torqued them tight and evenly as recommended.

I'll be so angry if they leak, lol. Such a PITA to get back there.

hornetball

iTrader: (4)

I used Permatex thread sealant. I also used dry Mazda OEM thermostat gaskets on both sides of the BEGI spacer. Torqued evenly by the book. No leaks whatsoever.

EO2K

iTrader: (37)

I stopped using parts store gaskets a while ago. I've NEVER had a "stick-on" gasket ever work properly on any application I've ever been unfortunate enough to try it on.

+1 on OEM Mazda gaskets too. If I'm feeling particularly saucy, Permatex RTV (or Hylomar) FTW

shuiend

iTrader: (24)

I am using Fel Pro gaskets for both sides of my BEGI spacer and have not had any issues. They were not stick on ones though, just a pain in the *** to get all aligned behind the head with the engine in the car.

Fireindc

iTrader: (13)

I figured if BEGI included them in their kit, then they should work. I probably shouldn't assume. Time will tell, hopefully getting her running this weekend.

rleete

iTrader: (21)

For threads, tape. Easier, less messy, seals better.

For gaskets, I always use Indian Head shellac. Dad used it for years, never any problems, so I continued with what works. One bottle will last you a lifetime.

psyber_0ptix

iTrader: (4)

The instruction says to use teflon tape for the ports... however the barb with an o-ring....nothing was mentioned

http://www.949racing.com/mtuned/M-Tu...route_Inst.pdf

z31maniac

Paste. Everywhere we tried Teflon tape didn't take long to start leaking. Paste has been good after multiple track days.

YMMV

psyber_0ptix

iTrader: (4)

Teflon paste? I forgot that stuff existed. Good call...

hornetball

iTrader: (4)

That's what the Permatex thread sealant is.

baron340

iTrader: (5)

Just to throw another opinion in, I've been using some yellow goop sold for sealing steam pipes I picked up at Lowes. Sort of like the teflon paste but says it's designed for high heat applications, and stays fairly soft for a very long time. I've never had a problem with it leaking on coolant or oil ports.

As for the gaskets, I just used autoparts store paper gaskets with a thin layer of RTV and haven't ever had a problem. I've always used this approach for all coolant system paper gaskets.

EO2K

iTrader: (37)

This stuff?

I friggin' love this stuff.

I used to use the version of this yellow stuff that comes on a roll. It's the only thing I've seen that specifically states that its oil/water/fuel safe, other than the above sealant. Looks like this:



Works great, but I prefer the Permatex product on anything other than stainless these days. For stainless, I still use the tape. There seems to be far less galling on SS threads

hornetball

iTrader: (4)

Yep.

Fireindc

iTrader: (13)

I used this stuff:



Will report back when the car has seen some miles. Seems like it sealed good though from looking at it, lol.

rleete

iTrader: (21)

Fireindc, that's the equivalent of the Indian Head shellac. Different brand is all.