haikuhead
Rover Fanatic
Posts: 167
Location: London
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Post by haikuhead on Apr 3, 2016 18:20:23 GMT
My P5B Coupe has been a very sluggish starter for a while now - often taking between 20 and 30 seconds to get it going if it hasn't been driven for a couple of days. It has electronic ignition and the plugs all seem fine. I was thinking about replacing the starter motor. Does anyone have experience with this high torque starter motor - or similar? www.rimmerbros.co.uk/Item--i-GXE4442UR |
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Post by petervdvelde on Apr 3, 2016 20:56:54 GMT
Some time ago i bought a spare range rover 3.5 engine which had a high torque starter. I tried to fit on a spare P5B engine and the solenoid touched the exhaust manifold. It could be solved by grinding off a piece of the solenoid housing but i didn't like the idea of the solenoid being so close to the exhaust manifold.
I agree with Resurgam that the standard starter is bullet proof and cheap and easy to overhaul. You could also check the wires and earth connection on corrosion which had a big influence on the power of your starter.
If you decide to go for the high torque version, check the position of the solenoid. There is a difference between the RV8 fitted to the P5B, SD1 and Range Rover
Peter
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Post by barryr on Apr 3, 2016 21:28:52 GMT
Now mine is running electronic ignition and fuel pump it starts almost instantaneously with standard starter. I just let the pump prime which is audible before flicking the key.
It'll be the manual fuel pump. I resisted changing the manual one out for as long as possible but after 40 years even with a new diaphragm and valves it just wasn't up to the job.
On search there was a lot of debate about some cranking having the benefit of raising the oil pressure before the engine catches but I far prefer the quicker starting to battery and starter loadings!
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Post by Warwick on Apr 4, 2016 4:36:51 GMT
... ,I can confirm that it's a heavy beast of a thing .... An understatement if ever there was one. I removed mine several years ago* and despite being warned about the weight, I thought I was prepared for it. I had undone the bolts from above and manoeuvred the thing into a position where it wouldn't fall. Then I lay on my back on the floor under that car and carefully lifted lowered it down. Well, when I say carefully lifted lowered, that's not quite correct. It plummeted downwards while I 'supported' it in the palm of my left hand. It thumped my knuckles into the concrete floor, pinned my hand there briefly, and then slowly toppled over and whacked me on the forehead - while my son watched from above, down through the engine bay. * Yes I know I know, John and Vince, everything I've done on my car was several years ago. |
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Post by davewright on Apr 4, 2016 8:26:16 GMT
We had a talk last week at our local motor club by a car electrics expert. He recommended the use of high torque starter motors. One reason is that they draw less power so you will get a bigger spark. I looked them up when I got home. The model for the Rover V8 is www.powerlite-units.com/products/rac318/. These cost around £200 so I would need a good justification for buying one. I was interested to read the earlier comment about them fouling the manifold. |
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Post by Warwick on Apr 4, 2016 8:53:40 GMT
They've been available here for Range Rovers for probably 10 years or more. Depending on the vehicle, they fitted the appropriate alloy 'nose' and flange so it would mate up correctly and have the solenoid rotated to the appropriate angle to avoid fouling on anything.
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haikuhead
Rover Fanatic
Posts: 167
Location: London
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Post by haikuhead on Apr 4, 2016 16:33:12 GMT
It'll be the manual fuel pump. No, mine has an electric fuel pump. In fact, I'm on the second one. Had nothing but trouble with them! So I've just bought a NOS manual fuel pump to fit back into it. But thanks for all the replies. I think I'll buy a reconditioned P5B starter motor and swap it over with the one I have in there. |
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Post by Roy of the Rovers on Apr 5, 2016 13:32:01 GMT
I fitted a standard SDI starter motor to an old P5, it was about half the weight and size of the P5 one and fitted easily in comparison with no problems.
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Post by Colin McA on Apr 5, 2016 18:40:03 GMT
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Post by davewright on Apr 6, 2016 7:43:39 GMT
I suppose it depends on your definition of high torque but the Moss one is just a normal starter motor with a solenoid on top. It may have a beefier motor but otherwise is of the standard type. The Powerlite high torque starter is of the type fitted to modern cars. The motor is on the top and spins at very high revs and then drives the started cog through a series of gears to give the high torque.
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Post by petervdvelde on Apr 6, 2016 10:36:52 GMT
The Moss starter could be a high torque one as the extra gears don't take that much room. Underneath a picture of the high torque starter from a Range rover engine  Peter |
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Post by davewright on Apr 7, 2016 16:09:56 GMT
Interesting picture. Thanks for that.
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