S52 guys, coolant pipe?

[sharky]

OK so I am starting to build the engine for the swap, its a S52 so it has the metal coolant pipe which I like as it is one less rubber piece. I have a OBD1 rubber spider pipe that I can use but would rather stay with the metal. Has anyone with a OBD1 S52 retained the metal coolant pipe and what modifications had to be made. Any help is appreciated.

[hugh jass]

i did and it works fine. you just have to find a portion of coolant hose to connect to the firewall but thats it.

[Farbin Kaiber]

Yes, and you may need to bend the smaller of the two pipes to follow the same angle of the larger one to get the hoses to meet.

[7pilot]

I used the metal pipe.

I bent the small throttle body return pipe to be parallel with the expansion tank return and capped it off. (Don't need TB heat).

The disadvantage to retaining this pipe is that the heater return end and the expansion tank end are different in size to the target flanges. This calls for hose splicing which is not so pretty.

m

[sharky]

I used the metal pipe.

I bent the small throttle body return pipe to be parallel with the expansion tank return and capped it off. (Don't need TB heat).

The disadvantage to retaining this pipe is that the heater return end and the expansion tank end are different in size to the target flanges. This calls for hose splicing which is not so pretty.

m

Care to eloborate?

[7pilot]

Care to eloborate?

In the event that this is not sarcasm I'll give you an example.

1, E36 318 radiator with integrated expansion tank on the drivers side.
2 S52 metal coolant return pipe instead of the S50 spider hose.
The pipe was in good shape so I saw no reason to delete it.

I had to buy two hoses to connect the drain at the bottom of the tank to the flange on the metal pipe. This is due to the flange on the expansion tank being larger than the flange on the metal pipe. so I have diced and spliced two hoses to make one. So when you look down at the frame rail, you can see 2 extra hose clamps and a reducer. It does not look sanitary.

m

[rThor432]

I kept the metal pipe as well. I just capped off the TB heater.

[hugh jass]

In the event that this is not sarcasm I'll give you an example.

1, E36 318 radiator with integrated expansion tank on the drivers side.
2 S52 metal coolant return pipe instead of the S50 spider hose.
The pipe was in good shape so I saw no reason to delete it.

I had to buy two hoses to connect the drain at the bottom of the tank to the flange on the metal pipe. This is due to the flange on the expansion tank being larger than the flange on the metal pipe. so I have diced and spliced two hoses to make one. So when you look down at the frame rail, you can see 2 extra hose clamps and a reducer. It does not look sanitary.

m

i think you're overstating how bad it looks. 2 hoses spliced together with a plastic adapter and new hose clamps looks just fine imo.
op, i'll try to remember to take a picture showing the splice.

[sharky]

I pulled the pipe out last night as i need to clean the block for paint, those 2 little orings do not make me feel so satisfied with coolant not leaking out, I may high temp epoxy it back in, maybe some jb weld will do the trick. Cant see any reason for it to come out after the engine install.

[atldohc]

there are many manufacturers that use o-rings to seal spots in their cooling systems. if it is a good o-ring there is no reason for it to leak. and if it does its as simple as putting a new o-ring on. you can do as you wish but i wouldnt put epoxy anywhere on my engine

[Farbin Kaiber]

As long as the nuts/bolts that mount the pipe are re installed there should be no leaks.

[sharky]

I will just get new orings I guess, any good hardware store should have them.

[Farbin Kaiber]

Or, buy them for 2 bucks at the dealer.

[sharky]

need to find the p/n I order everything from BMA if I could.

[hugh jass]

need to find the p/n I order everything from BMA if I could.

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