Cooling question

Scott21 · Post by **Scott21** » Wed Jan 14, 2009 12:51 pm

The nipple for the bypass on the water pump and cylinder head have been caped with a plug. What can I use for a new nipple. Also, what is a goosd substitute for the water tubes in the radiator hoses.

Scott

Post by **Ryan_Miller** » Wed Jan 14, 2009 10:06 pm

Scott,

Most jeep parts dealers have new nipples for the engine head and water pump.

The top hose to the radiator is straight hose cut to length and the bottom is a molded rubber also easily obtained through parts dealers.

Post by **wesk** » Thu Jan 15, 2009 11:31 am

Just go to your auto parts store or hardware store and ask for a pair of steel 1/4"P hose nipples.

Here's the info for the hoses:

Bypass hose: 801047 7697588
Gates 20191
4" long
ID = 17/32 x 4” moulded

Outlet hose from radiator 801057 8673327
Gates 20121 (Is this straight stock or angled moulded stock?)
14" long ID = 1 1/2" moulded

Outlet hose from radiator 801090 7697589
Gates ??????
With reinforcement

Upper radiator hose
Gates 24024 (Is this straight stock or angled moulded stock?)
length 12 1/4"
ID = 1 1/2"

ocwd · Post by **ocwd** » Thu Jan 15, 2009 2:53 pm

Wes,

Is the moulded water outlet hose available at local parts places like NAPA? I noticed that you have question marks for that one.

My RMC engine came with a metal 90 degree section. Was this specific to the genset?

Dave

Post by **wesk** » Thu Jan 15, 2009 5:00 pm

The metal elbow connector was common on early engines. I have the remnants of one also. The preformed rubber 90 is correct and was available at stores.

ocwd · Post by **ocwd** » Thu Jan 15, 2009 6:29 pm

Are the bypass hose nipples galvanized.

Post by **wesk** » Thu Jan 15, 2009 11:44 pm

No. It is plain steel 1/4" P thread with a 1.5" hose nipple.

Cacti_Ken · Post by **Cacti_Ken** » Sat Jan 17, 2009 10:40 am

If I were buying 1/4" pipe nipples for this purpose, I would get one nipple threaded on both ends long enough to cut it in half and trim it so the hose would slip on over a smooth surface and not over threads.

artificer · Post by **artificer** » Sat Jan 17, 2009 12:19 pm

Better to get something with a ferrule (that the hose has to fit over and onto the pipe) on rather than use threaded end and straight pipe.

Post by **wesk** » Sun Jan 18, 2009 2:20 am

For the yanks,

our down under pro mechanic is referring to the raised bead on the end of the nipple that helps prevent the hose slipping off.

Cooling question

Cooling question

Hose

Hose Nipples