Hybrid_From_Hell Posted October 27, 2006 Share Posted October 27, 2006 Righty Ho, When I built the Eales engine up we used the entire front end from a Std 1986 C Plate V8 90. Which means I have the stunning 45 amp alternator - RTC5683 or Lucar*se No 24198 2 slight problems. 1 Each of the 2 new engine fans pulls around 20 amp EACH when running 2 I note in the parts book the V8 90 had a bigger alternator - RTC5087 or RTC5681 at 65amp (can't work out why 2 different ones ???) , is this a simple swap fit, or is the spacing plug other things make it an upgrade and with extar work and if so what ? 3 COS .... My current alternator seems poorly and doesn't charge up the alternator test lamp I have ..........even at higher RPMs.... Currently alternator sits Driver side front of engine.... So, What are my options ? 1 Can I fit a bigger alternator as a "In and Out" type job ??, using the existing rectangular plug ??, and will the std 45 amp wiring take it (65 amps) ?? 2 If not then what are the options ?..... I know JW mentioned a Mondeo alternator 90amp ?, obviously this will need bigger wires than I have now ? A pic and words as to options would be good.??? Nige Quote Link to comment Share on other sites More sharing options...
FridgeFreezer Posted October 27, 2006 Share Posted October 27, 2006 Fancy that - a mod who doesn't know how to use the "search" function Quote Link to comment Share on other sites More sharing options...
GBMUD Posted October 27, 2006 Share Posted October 27, 2006 2 I note in the parts book the V8 90 had a bigger alternator - RTC5087 or RTC5681 at 65amp (can't work out why 2 different ones ???) Because in poor weather conditions you need extra power for the headlights, wipers, heater and de-mister being on and still need reserve power to crank the engine after every other puddle. Chris Quote Link to comment Share on other sites More sharing options...
Hybrid_From_Hell Posted October 27, 2006 Author Share Posted October 27, 2006 Yes ta evrso V funny and yes Mr Fridge I did, most seemed around TDi engine / alternator upgrades, V8 I 'aint sure re if they are the same HELP Nige Quote Link to comment Share on other sites More sharing options...
white90 Posted October 27, 2006 Share Posted October 27, 2006 best swap the square plug as the spade connector won't be up the much larger Amperage, hence the lug type connectors used on larger output alternators. Quote Link to comment Share on other sites More sharing options...
BogMonster Posted October 27, 2006 Share Posted October 27, 2006 best swap the square plug as the spade connector won't be up the much larger Amperage, hence the lug type connectors used on larger output alternators. What Tony said And the wiring can get a bit warm too If you have to mess about with it why not go the whole hog and fit a 100 amp jobbie Endless post-puddle-cranking power available Quote Link to comment Share on other sites More sharing options...
Hybrid_From_Hell Posted October 27, 2006 Author Share Posted October 27, 2006 Righty Hoo Electric boys and girl Gurus.... Have had a rummage in the shed (Its legal yer know ) and have found the big thick wire that I had on the Hybrid engine which went from the alternator (ring terminal) to the Starter( another ring terminal) This was on a 3.9 V8i, out of a RR classic about 1992 ish, and look as I might on Microcat I can't dind the part number or spec. The wire is (inc the rubber coating) 7.5mm, and where I can just about get the vernier in about 5.5mm without the plastic sheilding.....what does the panel think this will handle amp wise if I go an upgrade ? Any ideas of this part number too ? Am I also right in thinking that I junk the 2 wires into the alternator block and replace with this one and the single small wire goes to the sensing terminal on the back of the alternator Reasion for asking is I seem to have found in my shed a 120 amp bosch unit ???? Hmmmmmmmmmm ?? Nige Quote Link to comment Share on other sites More sharing options...
FridgeFreezer Posted October 27, 2006 Share Posted October 27, 2006 Nige, Any way of measuring the conductor size? Sounds not quite ideal for 120A, I used 10mm on my Mondeo one and have successfully jump-started off the alt post (it's more accessible 'cos the battery was under the seat) without problems If you need some 10mm just shout, I have a bit kicking around EDIT: I meant 10mm dia, which according to VWP will be about 25mmsq / 170A B) Quote Link to comment Share on other sites More sharing options...
Bull Bar Cowboy Posted October 27, 2006 Share Posted October 27, 2006 Yes, chuck that POS in the picture in the nearest bin…………… Make up a new lead using 180 amp battery cable and use an alternator that has a post for a ring terminal (most do) At your local scrappy …………… Mondaneo 90 amp …….. VW golf GTI 120amp……… Sierra 90 amp …………all these will fit on the drivers side ………. Usually 15 notes apiece. Dont worry about pullety size or style ........ its all interchangeable Mine is passenger side ………….. I used an Escort 90amp ……….. Ian Quote Link to comment Share on other sites More sharing options...
Hybrid_From_Hell Posted October 27, 2006 Author Share Posted October 27, 2006 Nige,Any way of measuring the conductor size? F***ing WHAT ? In Simple English HFH muppet speak Please ?? Nige Quote Link to comment Share on other sites More sharing options...
HoSS Posted October 27, 2006 Share Posted October 27, 2006 Actually i was going to post a similar question. Which 100A ish altenators will mechanically drop onto the V8? (doesnt need to be LR OE, i have scrappy close by) edit - thanks BBC - you posted while i was typing Quote Link to comment Share on other sites More sharing options...
Les Henson Posted October 27, 2006 Share Posted October 27, 2006 Don't know if it's much help Nige, but I have a Mondeo with air-con etc. Wiring from the alternator is very basic, but the wire is the same diameter as the main battery cable. In fact the wire goes from the positive terminal of the battery to the starter motor, then continues on to the alternator. The wire must be 10 or maybe 12mm dia. Could you perhaps fit your 120 amp alternator and alter the wiring? Les. Quote Link to comment Share on other sites More sharing options...
white90 Posted October 27, 2006 Share Posted October 27, 2006 You have a a what you climate criminal you Quote Link to comment Share on other sites More sharing options...
Hybrid_From_Hell Posted October 27, 2006 Author Share Posted October 27, 2006 Hmmmmm Ta all keep the thoughts coming Having had a further rummage I found 3 more alternators, one is a 90amp Lucas something or other, and then I dropped the torch and the bulb broke, its dark, and I fell over one of the other 2 alternators, grabbed something on the bench to steady myself, and that landed on the floor too, with a huge bang, I decided that with flip flops on I was doing ok to escape right now, ....and will have a further lookie tommorrow Nige Quote Link to comment Share on other sites More sharing options...
bathtub Posted October 27, 2006 Share Posted October 27, 2006 [ What are my options ? Just fit a 200amp premier power welder alternator charges 130 amps at 1900rpm can be to your door in 3 days 3 5hp bowmotors -8 roof lights ,2 x 50 amp fans , 2 x 20amp fans & still the volt meter sat at 13V at 2500 rpm Gives me a hard on every time Didnt go flat in Argyll like some OH YER **** I like pink **** **** Edited by Les Quote Link to comment Share on other sites More sharing options...
Daan Posted October 27, 2006 Share Posted October 27, 2006 [Edited by Les Becomes very common with bathtub replys these days! Arent you getting any? Daan Quote Link to comment Share on other sites More sharing options...
Daan Posted October 27, 2006 Share Posted October 27, 2006 Anyway, Nigel, I bought a brand new viscous fan on the last Old Sodbury recently which I thought is from a TDI, but....Its from a V8! So here we go, if you want a brandspanking new viscous fan for a v8; 20 pounds for you and it solves your problems. Daan Quote Link to comment Share on other sites More sharing options...
FridgeFreezer Posted October 27, 2006 Share Posted October 27, 2006 Pete - how much is the Premier Power one? 120A for £15 at the scrappy or an extra 10A for how much extra wonga? Also note I edited my last post - meant 10mm not mmsq Quote Link to comment Share on other sites More sharing options...
white90 Posted October 27, 2006 Share Posted October 27, 2006 cheap really for what you get http://www.premierpowerwelder.com/specs/ppwspecs.html Quote Link to comment Share on other sites More sharing options...
Andy Posted October 27, 2006 Share Posted October 27, 2006 this will probably make the sensible people here shudder but i'd suspect your wiring would take a 100amp alt ok. im running a 130amp alt on my tdi (original is 65amp) with no changes to the wiring & it hasnt caught light after two years. Quote Link to comment Share on other sites More sharing options...
white90 Posted October 27, 2006 Share Posted October 27, 2006 check for brittle insulation as the standard wiring should be beefed up or supplemented with an additional cable really when adding a bigger alt Quote Link to comment Share on other sites More sharing options...
FridgeFreezer Posted October 27, 2006 Share Posted October 27, 2006 Andy, Have a watch of the power safety video and see if you'd like to reconsider uprating your charge cable It's amazing how quickly cable goes from OK to on fire Quote Link to comment Share on other sites More sharing options...
Andy Posted October 27, 2006 Share Posted October 27, 2006 most of the other wires under there have done the fire thing, the charge wire is the 'good' one. i couldnt be arsed to replace it, too many problems with the damn truck to fix them all. Quote Link to comment Share on other sites More sharing options...
geoffbeaumont Posted October 27, 2006 Share Posted October 27, 2006 Righty Hoo Electric boys and girl Gurus....Have had a rummage in the shed (Its legal yer know ) and have found the big thick wire that I had on the Hybrid engine which went from the alternator (ring terminal) to the Starter( another ring terminal) This was on a 3.9 V8i, out of a RR classic about 1992 ish, and look as I might on Microcat I can't dind the part number or spec. 1992 would probably have had a 100Amp alternator wouldn't it? My '93 does, but it's got all the electrical toys too. Quote Link to comment Share on other sites More sharing options...
will_warne Posted October 28, 2006 Share Posted October 28, 2006 Bathtub, you want a nice 90 Amp 24V military spec alternator. That pushes out 90A at tickover and is hugely tough. The cost £55 for a brand new, possibly newley rebuilt, one at one of the shows over the summer Nige, FYI the standard 65 A should be OK as you've not got a winch. My 65 one on the Tdi lasted for quite a while and didn't give major problems. The 85A one on the tgv has been fine so far. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.