Swap Coolant Return Pipe for Hose

[mwesten]

Hey gang - anyone here make the switch to just one piece of hose from the back of the water pump, under the Y pipe and out? vs the coolant return pipe? Figure this would remove at least one point of leaking.

[David T]

Hey gang - anyone here make the switch to just one piece of hose from the back of the water pump, under the Y pipe and out? vs the coolant return pipe? Figure this would remove at least one point of leaking.

That pipe was a convenience to assemble the car so they would have a connection they could get to easily without dismantling the motor when it was installed in the car.

[Bitsyncmaster]

Hey gang - anyone here make the switch to just one piece of hose from the back of the water pump, under the Y pipe and out? vs the coolant return pipe? Figure this would remove at least one point of leaking.

Yes I did that 15 years ago. I used silicon hose so was able to fit it onto the larger pump fitting with some effort.

[mwesten]

Yes I did that 15 years ago. I used silicon hose so was able to fit it onto the larger pump fitting with some effort.

I haven?t torn down to the VOD yet (still gathering parts)? what diameter of silicone hose would you reco and what length? I figure I can just heat gun it on the pump end yes?

[82DMC12]

Last time I was in the valley (Jan 2022) I replaced the original metal pipe with the DPI (https://deloreanindustries.com/onlin...configuration/). I was somewhat worried about silicone hoses needing to be tightened but I got the clamp good and tight, also had the opportunity to check it again when I did a frame off later that year and confirmed there was no leakage in the valley.

Definitely recommend the kit, yeah you can figure something out for way cheaper at NAPA but I like the supplied adapter that fits to the Y-pipe bolt.

PXL_20220122_220210701.jpg

[mwesten]

Last time I was in the valley (Jan 2022) I replaced the original metal pipe with the DPI (https://deloreanindustries.com/onlin...configuration/). I was somewhat worried about silicone hoses needing to be tightened but I got the clamp good and tight, also had the opportunity to check it again when I did a frame off later that year and confirmed there was no leakage in the valley.

Definitely recommend the kit, yeah you can figure something out for way cheaper at NAPA but I like the supplied adapter that fits to the Y-pipe bolt.

PXL_20220122_220210701.jpg

That?s interesting never seen that option. What?s the reason for the splice and not just one-hosing it all the way across?

[82DMC12]

The adapter is required because the hose size goes from 3/4 to 5/8. Needs to transition somewhere, somehow.

[DMC-Ron]

The adapter is required because the hose size goes from 3/4 to 5/8. Needs to transition somewhere, somehow.

Perhaps a transition beyond the valley would be prudent?

[Bitsyncmaster]

The adapter is required because the hose size goes from 3/4 to 5/8. Needs to transition somewhere, somehow.

A pump back with a 5/8" nipple would be the best.

[mwesten]

The adapter is required because the hose size goes from 3/4 to 5/8. Needs to transition somewhere, somehow.

Makes sense. You think that thing would work if it was just moved out of the valley? Seems like it could just ?float? and not have to be mounted to anything. Or if it needed support could be zip tied to something else.