Mud-club
Vehicle & Technical => Range Rover => Topic started by: mark.yellow.series.3 on March 10, 2007, 12:12:31
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what size would an alternator be on a RRC 1980 ish.
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Standard 63/65 amps, export spec 80 amp.
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hmmm....
might be worth getting a bigger one.
what kind of prices are the 80amp jobbies??
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hmmm....
might be worth getting a bigger one.
what kind of prices are the 80amp jobbies??
As I have a winch I uprated my 1987 65amp to 100 amp for £110
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hmmm....
might be worth getting a bigger one.
what kind of prices are the 80amp jobbies??
As I have a winch I uprated my 1987 65amp to 100 amp for £110
Was advised wiring may need uprating for 100a. Have you uprated or do you have any problems?
Steve
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Uprating the wiring is relatively easy, wire the winch to the alternator :wink:
Seriously though, it's only the wiring that will carry more than was originally intended, so the alternator to battery wire and that's where the winch will connect.
80 amp, onlyu problem is finding one, I tried looking for a spare to no avail.
The problem I forese is the Vee belt, mine can eat a new belt in an afternoon with just the fans cutting in all the time (laning in the peaks) so I use a 13mm wide belt rather than the 10mm belt it should have. I suspect that a 100amp alternator would only make matters worse, so I toyed with the idea of fitting the 100 amp unit from a '93 SE as it has a multi vee belt from the crank pulley, over a giude on the PAS pulley then direct to the alternator.
However I think now I'll be going for a serpentine front end on the 4.6 this summer when it goes in.
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the other idea iam toying with is on the front crank pulley on the V8, there is a small v which the alternator and water pump currently use, and there a much bigger v , which i could use for the bigger alternator on another belt.
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You have an SD1 engine IIRC. The RRC V8 in the EFi has no spare Vee in the pulley.
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You have an SD1 engine IIRC. The RRC V8 in the EFi has no spare Vee in the pulley.
defo a RRC engine, confirmed when i bought a new water pump.
although padocks crossed the engine number to an SD1, but rimmer bros told me it was a RRC due to the engine number and water pump type.
my V8 is the one with 'pulse air' system on it, and SU's.
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I thought you'd said it was SD1 at somepoint. Anyhoo, it's a pre-EFi engine, so still different to my EFi lumps
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I thought you'd said it was SD1 at somepoint. Anyhoo, it's a pre-EFi engine, so still different to my EFi lumps
the only thing i have ever had to buy where it would matter if it was an SD1 or RR enigne, was the water pump, and two companies told me different stories, altho i tend to belive rimmer bros as the guy discribed the engine differences over the phone. :D
so the PAS or aircon dosent run off the extra V in the pulley then?
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Ive heard the alternator off a ford scorpio/granada will fit,now if you get one off an all singing all dancin one (fully loaded) then I think they are good for 100 amps and there are plenty of said cars in scrappys these days
P.S the poly vee belt sytems (wide belt with loads of ickle V's in) can take alot more stick than your standard single vee type,the problem ive found in the past with single vee belts is the "V" angle on the pulleys wear's down and polishes up to [!Expletive Deleted!] so your belt contact area disappears to nowt and starts the dreaded squeal and no matter how tight you get it,it will still squeal it's t*ts off
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You're right it's the multu vee or serpentine belt as it's also kknown that you want for a 100 amps alternator.
Or if you can find one the '93 model SE had a different crank pulley with the 2 Vee belts and a multi vee also, the alternator drive ran over a guide pulley on the PAS pump to the alternator direct.
MArk, on the EFi engine, theere are normally 2 Vee on the front pulley, the back one drives the PAS which in turn drives a second belt for the alternator (cack or what?), the front pulley drives the water pump which in turn drives yet another belt for the air conn if fitted, so that's 4 belts in all :shock:
On the '93 you still have 4 belts but one is a very long multi vee.
On the fully serpentine engine you have 1 wider multu vee that does everything, quietly. The water pump and fan run backwards though :!:
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hmmmm, serpenine
now theres a thought
:D :D :D
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Different oil pump too :wink:
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i was thinking of a eletric oil pump to improve the oil flow 8)
all tho it has about 30psi with hot oil, 15/40
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Too much pressure is as bad as not enough :wink:
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the oil pressure valve should open when the pressure gets to high, i think mine opens at 65psi.
but too much oil flow is a different problem
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Yes absolutely. Too much pressure can cause cavitation amongst other things.
Too much oil is more an economy issue, unless there is so much running through the engine that none is left in the sump.
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hmmm....
might be worth getting a bigger one.
what kind of prices are the 80amp jobbies??
As I have a winch I uprated my 1987 65amp to 100 amp for £110
Was advised wiring may need uprating for 100a. Have you uprated or do you have any problems?
Steve
I did not uprate the wiring and so far so good, but as I am about to convert to a 300tdi, I might just upgrade the wiring while I am at it. I did have to change the pulley wheel to take the original profile of belt to it and tbh it does squeel sometimes. The only alternator that was available at short notice was for the left handside, so it has been fitted where the aircon pump once was.
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whats cavitation?
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When oil/fluid goe through a gap so fast it starts to pull the walls apart.
From your basic Bernoulli'e equation, speed, pressure, height are interchangeable, as a large volume gets forced through a small space the pressure drops and can cause a vacuum, damaging things like bearing surfaces.
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a day without learning is a day wasted :D
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I like that :D
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Cavitation,What dentist dreams are made of :D :D