Really really useful info - Page 3

COLVERT · 26th July 2013, 17:52

That's a really interesting post Mike. If I get trouble with my diesel fan I'll definitely fix it up with a one speed one.

Good one

Colvert.

Mike Noc · 28th July 2013, 08:24

Thanks Colvert. The official Rover wiring diagram I saw for the diesel fan was incorrect as it showed the high speed relay supplying a positive voltage, when in reality it is a ground connection.

COLVERT · 24th October 2013, 20:02

Think I'll plonk this in here. Might be handy for someone.

Rate of battery charging.----The main thing is to keep the battery temperature low. ( Around bath water temperature. ) Much hotter than this and the water content will start to get boiled off.

In the days when batteries had filler caps you could look inside to see what was happening. 20 amps for any length of time and you'd see fierce action as bubbles came up past the plates.

The regulator is there to stop this happening. Fast chargers that are some times used by garages can drastically shorten the life of batteries. ( Avoid fast chargers like the plague. )

With the latest modern batteries the fluid levels drop but can no longer be checked. Also paste can be forced out of the lead/antimony grids and fall to the bottom of the battery.

None of this does the battery any good.

RE---- Charging rates and capacity.

A batteries voltage does not change much from full to empty. Somewhere around one volt is normal unless the battery has been subjected to deep discharge.

Capacity however goes through an enormous change.

The analogy of two water tanks describes it perfectly.

Two tanks 3 feet high.

Tank 1 being a foot diameter.

Tank 2 being 10 feet diameter.

With reference to a battery the pressure in both is identical. ( Read DEPTH as VOLTAGE. )

The volume/ capacity in tank 2 is vastly greater than in tank 1 even though the depth/ voltage is identical.

Connect the tanks together and there is no flow from one to the other.

Raise the level in either tank and water will start to transfer from the higher to the lower. ( battery 12 volts---Charger 14 volts. Current starts to flow. Battery charges. )

Batteries------Around 12 volts discharged. Apply a higher voltage such as the alternator supplies ( !4.4 volts approx ) and current starts to flow into the battery increasing its capacity. ( Amount of electricity stored within it and available for work. ) During this time the battery internal voltage slowly increases and the current flow slowly decreases. The battery temperature starts to drop.

14.4 volts translates into around 5 amps roughly.

Any voltage increase above this will increase the current supply in proportion.

The higher the voltage the hotter the battery will get. ( As said above, avoid garage fast chargers like the plague. )

A discharged Diesel engine battery will take around 30 hours on a standard charger.

Colvert.

( Refer to post 73 too for a bit more info. Lol. )

steviesirishrover · 8th May 2021, 16:54

Hi all, could any of you knowledgeable chaps out there point me in the right direction as to where I could purchase a good set of braided oil cooler pipes for my 75 kv6 2 litre. I'm trying to avoid Rimmer prices if possible. Thanks, Stevie.

Sent from my moto g(8) power lite using Tapatalk

COLVERT · 13th May 2021, 11:18

Quote:

Originally Posted by steviesirishrover

Hi all, could any of you knowledgeable chaps out there point me in the right direction as to where I could purchase a good set of braided oil cooler pipes for my 75 kv6 2 litre. I'm trying to avoid Rimmer prices if possible. Thanks, Stevie.

Sent from my moto g(8) power lite using Tapatalk

Best post in the main forum as folk rarely come in here.---

--It's just down there.

Happy Wanderer · 13th January 2022, 20:45

Don't know if people already know about this but I've come across a site where you can get new Rover 75 rear door waist seals. Just thought I'd put it on here.
Cheers
Andy

https://www.ebay.co.uk/itm/174795055117

Nantwich 75 · 16th January 2022, 17:58

The eBay seller is myself, only have about 13 of the inner waist seals left for the saloons, but later in the year I will have about a dozen trimmed to fit the Tourer.

Happy Wanderer · 17th January 2022, 17:06

Quote:

Originally Posted by Nantwich 75

The eBay seller is myself, only have about 13 of the inner waist seals left for the saloons, but later in the year I will have about a dozen trimmed to fit the Tourer.

Yeah I only realised a few hours after you asked me & I'd already posted this lol. 👍🏻

Yorkshire GOC · 17th January 2022, 17:16

Quote:

Originally Posted by Nantwich 75

The eBay seller is myself, only have about 13 of the inner waist seals left for the saloons, but later in the year I will have about a dozen trimmed to fit the Tourer.

Can you PM when you have the tourer waist rails ready to sell.

TourerSteve · 17th January 2022, 19:37

Quote:

Originally Posted by Nantwich 75

The eBay seller is myself, only have about 13 of the inner waist seals left for the saloons, but later in the year I will have about a dozen trimmed to fit the Tourer.

Could you please PM me when you have tourer rear waist seals in stock
Regards
Steve

24th October 2013, 20:02	#3
COLVERT This is my second home R75 Saloon. Join Date: Feb 2009 Location: France/or Devon. Posts: 14,003 Thanks: 3,851 Thanked 2,167 Times in 1,816 Posts	Think I'll plonk this in here. Might be handy for someone. Rate of battery charging.----The main thing is to keep the battery temperature low. ( Around bath water temperature. ) Much hotter than this and the water content will start to get boiled off. In the days when batteries had filler caps you could look inside to see what was happening. 20 amps for any length of time and you'd see fierce action as bubbles came up past the plates. The regulator is there to stop this happening. Fast chargers that are some times used by garages can drastically shorten the life of batteries. ( Avoid fast chargers like the plague. ) With the latest modern batteries the fluid levels drop but can no longer be checked. Also paste can be forced out of the lead/antimony grids and fall to the bottom of the battery. None of this does the battery any good. RE---- Charging rates and capacity. A batteries voltage does not change much from full to empty. Somewhere around one volt is normal unless the battery has been subjected to deep discharge. Capacity however goes through an enormous change. The analogy of two water tanks describes it perfectly. Two tanks 3 feet high. Tank 1 being a foot diameter. Tank 2 being 10 feet diameter. With reference to a battery the pressure in both is identical. ( Read DEPTH as VOLTAGE. ) The volume/ capacity in tank 2 is vastly greater than in tank 1 even though the depth/ voltage is identical. Connect the tanks together and there is no flow from one to the other. Raise the level in either tank and water will start to transfer from the higher to the lower. ( battery 12 volts---Charger 14 volts. Current starts to flow. Battery charges. ) Batteries------Around 12 volts discharged. Apply a higher voltage such as the alternator supplies ( !4.4 volts approx ) and current starts to flow into the battery increasing its capacity. ( Amount of electricity stored within it and available for work. ) During this time the battery internal voltage slowly increases and the current flow slowly decreases. The battery temperature starts to drop. 14.4 volts translates into around 5 amps roughly. Any voltage increase above this will increase the current supply in proportion. The higher the voltage the hotter the battery will get. ( As said above, avoid garage fast chargers like the plague. ) A discharged Diesel engine battery will take around 30 hours on a standard charger. Colvert. ( Refer to post 73 too for a bit more info. Lol. ) Last edited by COLVERT; 11th May 2015 at 11:45..

13th January 2022, 20:45	#6
Happy Wanderer Loves to post Rover 75 (Roxy) /Ford Ranger (Ruby) /MGF (Gina) Join Date: Nov 2012 Location: Skipton Posts: 396 Thanks: 77 Thanked 31 Times in 24 Posts	Rear door waist seala Don't know if people already know about this but I've come across a site where you can get new Rover 75 rear door waist seals. Just thought I'd put it on here. Cheers Andy https://www.ebay.co.uk/itm/174795055117 __________________ It's not just a car, it's history 🤔☺️!!

26th July 2013, 17:52	#1
COLVERT This is my second home R75 Saloon. Join Date: Feb 2009 Location: France/or Devon. Posts: 14,003 Thanks: 3,851 Thanked 2,167 Times in 1,816 Posts	That's a really interesting post Mike. If I get trouble with my diesel fan I'll definitely fix it up with a one speed one. Good one Colvert.

28th July 2013, 08:24	#2
Mike Noc This is my second home Rover 75 CDT Manual Connoisseur SE, Rover 75 CDT Automatic Connoisseur SE & a Freelander Td4. Join Date: Jul 2009 Location: Hampshire Posts: 11,569 Thanks: 3,470 Thanked 3,119 Times in 2,247 Posts	Thanks Colvert. The official Rover wiring diagram I saw for the diesel fan was incorrect as it showed the high speed relay supplying a positive voltage, when in reality it is a ground connection.

8th May 2021, 16:54	#4
steviesirishrover Newbie Rover 75 saloon Join Date: Nov 2020 Location: Belfast Posts: 8 Thanks: 0 Thanked 1 Time in 1 Post	Hi all, could any of you knowledgeable chaps out there point me in the right direction as to where I could purchase a good set of braided oil cooler pipes for my 75 kv6 2 litre. I'm trying to avoid Rimmer prices if possible. Thanks, Stevie. Sent from my moto g(8) power lite using Tapatalk

16th January 2022, 17:58	#7
Nantwich 75 Loves to post Rover 75 Tourer Join Date: Mar 2016 Location: Nantwich Posts: 272 Thanks: 102 Thanked 31 Times in 23 Posts	The eBay seller is myself, only have about 13 of the inner waist seals left for the saloons, but later in the year I will have about a dozen trimmed to fit the Tourer.