Freeze Plug

What you guys think of using rubber freeze plugs with the bolt in the center that expands for sealing the plug to block?

Negative

Not even a medicore idea on a junk yard truck.

^^^^^^^^^That's the kind of stuff you'd use to get your car limped off the roadside so you could fix it right.^^^^^^

maverick wrote:^^^^^^^^^That's the kind of stuff you'd use to get your car limped off the roadside so you could fix it right.^^^^^^

10-4 lol

Maybe I have just been lucky but I have used them, (and even re-used them) a number of times in the past & never had any problems with them.

maverick wrote:^^^^^^^^^That's the kind of stuff you'd use to get your car limped off the roadside so you could fix it right.^^^^^^

xactly  

I took yall guys advice......  

I've actually used them for long term. The 460 I swapped into my 86 would blow frost plugs out occasionally. The one up under the motor mount could not be replaced so I used one of those rubber ones in there. That was over 12 years ago and it is still going strong. I would use the proper one if it is accessible however.

are you having an issue with spitting out freeze plugs or something?

steven gregoire wrote:are you having an issue with spitting out freeze plugs or something?

No, just had one with slow leak so I replaced it.

Core plugs are great for casting blocks.




Other than that who cares what kind of plug you put in there. We just thread the holes and run a screw in plug with sealant.

whatbumper wrote:Core plugs are great for casting blocks.




Other than that who cares what kind of plug you put in there.  We just thread the holes and run a screw in plug with sealant.

What size tap and screw in plugs do i need?Any picture or sites would be very helpful.Thanks

To be honest I have no idea what size they are.  We had an old man give us a bunch of machining stuff and we just happened to make them work.  I'm not sure what size bbf plugs are.  When we did use press in plugs we used permatex glue to seal them.

I think it takes two taps to cut them, can't remember tho for sure, I just used the regular brass ones with red lock tight as Lem suggested, its worked great on the last 3 motors.

It takes an 1-1/4" NPT tap some say you need only one some say you need two taps starter and bottoming.

anyone got part number for brass ones?

I am at work all night I think I got the number for the brass ones but will have to check tomorrow

69F100 wrote:I am at work all night I think I got the number for the brass ones but will have to check tomorrow

Thanks

Melling MPE-125BR

http://www.ebay.com/itm/Premium-Brass-Freeze-Plug-Kit-Ford-370-429-460-V8-1968-1997-Melling-MPE-125BR-/320956730781?pt=Motors_Car_Truck_Parts_Accessories&hash=item4aba830d9d&vxp=mtr

69F100 wrote:Melling MPE-125BR

http://www.ebay.com/itm/Premium-Brass-Freeze-Plug-Kit-Ford-370-429-460-V8-1968-1997-Melling-MPE-125BR-/320956730781?pt=Motors_Car_Truck_Parts_Accessories&hash=item4aba830d9d&vxp=mtr

Thanks  

Would like see some pic of engines with freeze plugs ''PIN'' in engine.Have read alot but cant see any good pictures.

Thanks, 69 but i was meaning like something about putting screws in 45 degree angle that allows head of screw to hold the plug in case it try blow out.I tried my car last week and one came out   on one hell of a ride.I was bless not to hit wall so now i got a tester to hook it the rad. check pressure.

John,
My dad always just took the soft plug to the vice and drilled 2- 1/8" holes across from each other about 1/4 of the way down the soft plug. Then drive it in the block and use the hole as a guide for whatever size drill bit you need for the size screw your using. I believe he used #6 screws about a 1/2" long and he only drilled into the block about a 1/4". He also put red locktite on the plug before driving it in.  Hope this helps. we had a 351 windsor that we pinned every soft plug, that was for a roundy round car though. Eventually we started putting the screw in type in.

I have also seen guys drive the plug a lil farther and do it like this. http://www.circletrack.com/enginetech/ctrp_0811_freeze_plugs/photo_14.html