water pump and "while you're there" checklist

[novadmc]

so my DeLorean's water pump appears to be on its way out. after drives i can see wetness around the weep hole and after letting the car sit over night, ill come out to find a couple drain bolts on the rear left of the oil pan have coolant drips hanging off of them. the rear main seal appears to also have a leak but again, we're talking 1,2 drips after a nice drive so i figure the more pressing matter for this winter is the water pump assembly.

I'm coming up with a parts list of "while you're there" things to do once i get into ripping everything apart to replace the water pump. I figured id run my list by you all to see if there is either anything i should consider adding, or anything i should forego. my goal is to minimize the times ill have to remove the intake manifold over the life of ownership :) (and itll be my 1st time diving into the innards of the delorean's engine bay.

what i have so far is:

DMC New water pump assembly kit (https://store.delorean.com/p-6247-water-pump-assembly.aspx)
DMC Stainless steel fuel injection lines (replace the ~15 year old rubber lines) (https://store.delorean.com/p-10631-braided-stainless-fuel-injection-line-set.aspx)
DMC new muffler heat shiled (current one is slightly de-laminating and is bubbled close to the engine pulley) (https://store.delorean.com/p-6479-muffler-heatshield.aspx)
2 new idler pulley bearings (https://store.delorean.com/p-7731-idler-pulley-bearing.aspx)
2 new idler pulleys (https://store.delorean.com/p-7730-pulley-adjuster.aspx)
DMC major service kit (new fuel/air filter, belts, plugs, wires, distributor cap, etc) (https://store.delorean.com/p-10526-major-service-kit-mt-aftermarket-plug-wires.aspx)



My best guess based on the records the former owner gave me is that the above things (except for probably fuel pump and belts) havent been touched since DeLorean One had the car back in the early 2000's. so i figure to err on the side of caution and do the above items.
All this looks straight forward, my only real concern is the difficulty (well trickiness) of bleeding the coolant system once i go to replace the coolant after putting everything back together.

later on, i plan to replace the stock fuel pump and sender with the updated modern units for more reliability and piece of mind, as well as replace the stock door lock controller with DMC's digital unit, and at some point tackle the rear main seal.

so, is my list crazy? am i on the right track? thoughts/suggestions?

thanks!

[PJ Grady Inc.]

so my DeLorean's water pump appears to be on its way out. after drives i can see wetness around the weep hole and after letting the car sit over night, ill come out to find a couple drain bolts on the rear left of the oil pan have coolant drips hanging off of them. the rear main seal appears to also have a leak but again, we're talking 1,2 drips after a nice drive so i figure the more pressing matter for this winter is the water pump assembly.

I'm coming up with a parts list of "while you're there" things to do once i get into ripping everything apart to replace the water pump. I figured id run my list by you all to see if there is either anything i should consider adding, or anything i should forego. my goal is to minimize the times ill have to remove the intake manifold over the life of ownership :) (and itll be my 1st time diving into the innards of the delorean's engine bay.

what i have so far is:

DMC New water pump assembly kit (https://store.delorean.com/p-6247-water-pump-assembly.aspx)
DMC Stainless steel fuel injection lines (replace the ~15 year old rubber lines) (https://store.delorean.com/p-10631-braided-stainless-fuel-injection-line-set.aspx)
DMC new muffler heat shiled (current one is slightly de-laminating and is bubbled close to the engine pulley) (https://store.delorean.com/p-6479-muffler-heatshield.aspx)
2 new idler pulley bearings (https://store.delorean.com/p-7731-idler-pulley-bearing.aspx)
2 new idler pulleys (https://store.delorean.com/p-7730-pulley-adjuster.aspx)
DMC major service kit (new fuel/air filter, belts, plugs, wires, distributor cap, etc) (https://store.delorean.com/p-10526-major-service-kit-mt-aftermarket-plug-wires.aspx)



My best guess based on the records the former owner gave me is that the above things (except for probably fuel pump and belts) havent been touched since DeLorean One had the car back in the early 2000's. so i figure to err on the side of caution and do the above items.
All this looks straight forward, my only real concern is the difficulty (well trickiness) of bleeding the coolant system once i go to replace the coolant after putting everything back together.

later on, i plan to replace the stock fuel pump and sender with the updated modern units for more reliability and piece of mind, as well as replace the stock door lock controller with DMC's digital unit, and at some point tackle the rear main seal.

so, is my list crazy? am i on the right track? thoughts/suggestions?

thanks!
If it's a stick shift you may want to add a slave cylinder or at least a fluid flush to your todo list. We happen to carry sleeved units that will outlast the new ones (Hint, hint)
Rob Grady

[kings1527]

so my DeLorean's water pump appears to be on its way out. after drives i can see wetness around the weep hole and after letting the car sit over night, ill come out to find a couple drain bolts on the rear left of the oil pan have coolant drips hanging off of them. the rear main seal appears to also have a leak but again, we're talking 1,2 drips after a nice drive so i figure the more pressing matter for this winter is the water pump assembly.

I'm coming up with a parts list of "while you're there" things to do once i get into ripping everything apart to replace the water pump. I figured id run my list by you all to see if there is either anything i should consider adding, or anything i should forego. my goal is to minimize the times ill have to remove the intake manifold over the life of ownership :) (and itll be my 1st time diving into the innards of the delorean's engine bay.

what i have so far is:

DMC New water pump assembly kit (https://store.delorean.com/p-6247-water-pump-assembly.aspx)
DMC Stainless steel fuel injection lines (replace the ~15 year old rubber lines) (https://store.delorean.com/p-10631-braided-stainless-fuel-injection-line-set.aspx)
DMC new muffler heat shiled (current one is slightly de-laminating and is bubbled close to the engine pulley) (https://store.delorean.com/p-6479-muffler-heatshield.aspx)
2 new idler pulley bearings (https://store.delorean.com/p-7731-idler-pulley-bearing.aspx)
2 new idler pulleys (https://store.delorean.com/p-7730-pulley-adjuster.aspx)
DMC major service kit (new fuel/air filter, belts, plugs, wires, distributor cap, etc) (https://store.delorean.com/p-10526-major-service-kit-mt-aftermarket-plug-wires.aspx)



My best guess based on the records the former owner gave me is that the above things (except for probably fuel pump and belts) havent been touched since DeLorean One had the car back in the early 2000's. so i figure to err on the side of caution and do the above items.
All this looks straight forward, my only real concern is the difficulty (well trickiness) of bleeding the coolant system once i go to replace the coolant after putting everything back together.

later on, i plan to replace the stock fuel pump and sender with the updated modern units for more reliability and piece of mind, as well as replace the stock door lock controller with DMC's digital unit, and at some point tackle the rear main seal.

so, is my list crazy? am i on the right track? thoughts/suggestions?

thanks!

Sounds like you're well on your way. And I like hearing about Rob's sleeved units. In my memory bank for when my slave goes out.

As for bleeding the coolant system, I highly recommend picking up the self bleeder kit from DPNW http://www.delorean-parts.com/Merchant2/merchant.mvc?Screen=PROD&Store_Code=DPNW&Product_Code=K1012DP-A&Category_Code=9475

It makes life incredibly easy and bleeding is a breeze and clean. Very easy to install, too.

On another note, I'd recommend anyone out there ONLY use a DMC-sourced water pump (i.e. not Hervey's). I've had both in my car and unequivocally without a doubt the DMC unit is more specific to the car and my car runs about 10 degrees cooler compared to when the Hervey unit was installed. I went back in there and replaced the Hervey unit with the bolt on pulley with a DMC unit and saw the results. Not to mention, did I feel all manly doing the water pump on the second go-around in record time. Pretty darn simple on a car that's regularly maintained. Frozen bolts? Have fun! :-) Just be sure when you start putting everything back together that you use brand new (and not weakened) bolts on everything along with anti-seize. I'm thinking spefically about the Y-pipe bolts in the valley if you decide to go that far and do a deep cleaning.

[AugustneverEnds]

Sounds like you're well on your way. And I like hearing about Rob's sleeved units. In my memory bank for when my slave goes out.

As for bleeding the coolant system, I highly recommend picking up the self bleeder kit from DPNW http://www.delorean-parts.com/Merchant2/merchant.mvc?Screen=PROD&Store_Code=DPNW&Product_Code=K1012DP-A&Category_Code=9475

It makes life incredibly easy and bleeding is a breeze and clean. Very easy to install, too.

On another note, I'd recommend anyone out there ONLY use a DMC-sourced water pump (i.e. not Hervey's). I've had both in my car and unequivocally without a doubt the DMC unit is more specific to the car and my car runs about 10 degrees cooler compared to when the Hervey unit was installed. I went back in there and replaced the Hervey unit with the bolt on pulley with a DMC unit and saw the results. Not to mention, did I feel all manly doing the water pump on the second go-around in record time. Pretty darn simple on a car that's regularly maintained. Frozen bolts? Have fun! :-) Just be sure when you start putting everything back together that you use brand new (and not weakened) bolts on everything along with anti-seize. I'm thinking spefically about the Y-pipe bolts in the valley if you decide to go that far and do a deep cleaning.

I've been running Hervey's water pump for over 2 years with no issues. Of course California tends to be a bit warmer than New York!

As for your Valley of Death project, I will suggest you replace, or at least inspect, the heater control valve. It's above the flywheel, passenger side, very accessible with the intake removed. These things can leak and you might never see it. They cost about $25 if my memory serves.

Happy hunting!

[alexwolf1216]

I've been running Hervey's water pump for over 2 years with no issues. Of course California tends to be a bit warmer than New York!

As for your Valley of Death project, I will suggest you replace, or at least inspect, the heater control valve. It's above the flywheel, passenger side, very accessible with the intake removed. These things can leak and you might never see it. They cost about $25 if my memory serves.

Happy hunting!

I cant find this part anywhere, do you have a part number or which page it might be on?

[kings1527]

I've been running Hervey's water pump for over 2 years with no issues. Of course California tends to be a bit warmer than New York!

As for your Valley of Death project, I will suggest you replace, or at least inspect, the heater control valve. It's above the flywheel, passenger side, very accessible with the intake removed. These things can leak and you might never see it. They cost about $25 if my memory serves.

Happy hunting!

I never had a real "issue" with it but my temperature reading between the two pumps was noticeable. Hervey's pump ran about a needle's width higher than the DMC unit. It's very noticeable when I'm on the freeway and my needle will sit right at 160 degrees but it was about a needle's width higher with the Hervey unit under the same conditions. Definitely not enough to cause problems in most circumstances! But I believe there to be a design difference between the two pumps. If I didn't have a potential pulley alignment problem with the Hervey unit, I probably would've just left it in.

[kings1527]

I cant find this part anywhere, do you have a part number or which page it might be on?

Here you are. AKA "hot water valve".

http://store.delorean.com/p-7669-hot-water-valve.aspx

[AugustneverEnds]

I never had a real "issue" with it but my temperature reading between the two pumps was noticeable. Hervey's pump ran about a needle's width higher than the DMC unit. It's very noticeable when I'm on the freeway and my needle will sit right at 160 degrees but it was about a needle's width higher with the Hervey unit under the same conditions. Definitely not enough to cause problems in most circumstances! But I believe there to be a design difference between the two pumps. If I didn't have a potential pulley alignment problem with the Hervey unit, I probably would've just left it in.

Hmmm, interesting. My needle always seems to stay right on the first mark on temp. gauge when cruising but who knows how accurate that really is. Maybe in the spring I'll try to take some more accurate measurements and see what temp. things are really running at. What radiator are you running? I have the DMCH one.

@ Alex, sorry about the confusion, I use both names for that valve

[kings1527]

What radiator are you running? I have the DMCH one.

@ Alex, sorry about the confusion, I use both names for that valve

I have the DMC aluminum one, too. Not sure why there'd be a variance. Maybe he started sourcing from a different supplier? I picked that one up from Hervey about 2.5 years ago.

[kbrown84]

the pumps running at different temps sounds more like a thermostat issue rather than a pump...and i know Hervey sells a bunch of different tstats...

KB

[AugustneverEnds]

the pumps running at different temps sounds more like a thermostat issue rather than a pump...and i know Hervey sells a bunch of different tstats...

KB

Good point. Usually the obvious answer is the correct one. Hmm, I really can't remember what thermostat I have. Another thing to have a look at this winter.