Paging the Hatter - Cooling System replumb

Paging the Hatter - Cooling System replumb

Author
Discussion

mk1fan

Original Poster:

9,885 posts

184 months

Wednesday 7th September 2016
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Hello Martin,

I was chatting with Chris over the weekend and discussed that I am going to be flushing the cooling system and 'deleting' the plenum preheater. Chris mentioned you had a diagram showing the alternative and ammended/reduced/simplified pipework arrangement.

A, Do you?

B, Can I have a copy please.

Thanks.

jon haines

927 posts

205 months

Thursday 8th September 2016
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I would also like that as I want to do the same on my 350

mrzigazaga

18,477 posts

124 months

Thursday 8th September 2016
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And me...smile

billynobrakes

2,675 posts

224 months

Friday 9th September 2016
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Sounds interesting, I have unplugged the injector on the plenum and starts fine, plus I am flushing the system as well on Priscilla so if it makes it a simpler and pipe system it can only be better

Number 7

4,101 posts

221 months

Friday 9th September 2016
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Does this help any? Unfortunately I did it so long ago (maybe 15 years) that I can't remember exactly what it looked like before.

mk1fan

Original Poster:

9,885 posts

184 months

Friday 9th September 2016
quotequote all
My understanding from Chris is that there are some other changes to simplify and reduce the hoses rather than just removing the the connections / T pieces to the plenum.

The Hatter

988 posts

129 months

Friday 9th September 2016
quotequote all
Hi all,

I haven't done a successful diagram, whenever I try to illustrate it I end up with a spaghetti mess.

It's pretty simple -
1) Plenum heater outlet connects to the metal pipe stub under the thermostat (so flows into the water pump inlet) - as it does on the original Rover SD1.
2) Tee piece into the lower rad hose (car builder solutions do them), with a large diameter pipe from the lower rad hose to the bottom connection under the expansion tank
3) Blank off the middle expansion tank port (or better still; change the expansion tank to a Merc W124 that was designed originally with an overflow)
4) Connect the radiator vent pipe and the swan neck vent pipe to the top of the expansion tank via a Tee piece.

The set up I now have constantly bleeds the air out of the engine and tops up from the expansion tank into the lower rad hose. No bleeding required and the heater matrix has coolant in it and not air.





mk1fan

Original Poster:

9,885 posts

184 months

Saturday 10th September 2016
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Thanks Martin.

Cerb420James

25 posts

6 months

Saturday 24th October
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Martin,

Can you send a picture of how you have got you heater matrix pipe work?

Mine comes through the bulkhead, hits a 90 bend and goes over to the drivers side of the block. It looks a bit Heath Robinson...

The Hatter said:
Hi all,

I haven't done a successful diagram, whenever I try to illustrate it I end up with a spaghetti mess.

It's pretty simple -
1) Plenum heater outlet connects to the metal pipe stub under the thermostat (so flows into the water pump inlet) - as it does on the original Rover SD1.
2) Tee piece into the lower rad hose (car builder solutions do them), with a large diameter pipe from the lower rad hose to the bottom connection under the expansion tank
3) Blank off the middle expansion tank port (or better still; change the expansion tank to a Merc W124 that was designed originally with an overflow)
4) Connect the radiator vent pipe and the swan neck vent pipe to the top of the expansion tank via a Tee piece.

The set up I now have constantly bleeds the air out of the engine and tops up from the expansion tank into the lower rad hose. No bleeding required and the heater matrix has coolant in it and not air.




lancepar

742 posts

131 months

Sunday 25th October
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Cerb420James said:
Martin,

Can you send a picture of how you have got you heater matrix pipe work?

Mine comes through the bulkhead, hits a 90 bend and goes over to the drivers side of the block. It looks a bit Heath Robinson...
Does this photo help, it's from a Wedge.

It's from my file that I've used to try and understand how the Heater is plumbed in on my Griff'.





Not the best but might hepl.

cool

Cerb420James

25 posts

6 months

Monday 26th October
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Thanks mate,

That is indeed how mine looks.

Just looks a bit messy. I’ll see if I can tidy it up with some new hoses etc