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Jun 25, 2007 12:06:04 GMT
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Having a few teething troubles with my mate's Landie and just wondered if anyone could give us a few pointers. Seems to think I might know something about Rover V8s all of a sudden   He's had it for a while now and it drove excellently, not a sign of overheating and never got about 1/2 on the gauge with the leccy fan on. Now, I've noticed that the fan is very poorly installed (about 2-3" from the radiator with no shroud which probably doesn't help) but anyway, going to help him fix that tomorrow by relocating the brackets. Basically when you start the Rover it'll idle and takes about 5-10 minutes to start bringing up the temperature which seems fine to me. However, if you're stationary after this the temperature spikes up to almost the red. As soon as you move off (oddly) it drops very quickly back to the middle region of the gauge. We took it out around town and it did exactly this, creeping up when in slow traffic as well to almost the red. When we pulled over and looked underneath, it'd dropped a bit of coolant on the floor. Couldn't see for the life of us where it was coming from but one of the hoses looks a bit suspect. Now it's back on his drive it's again dropped a little bit of coolant. Engine sounds fantastic, goes well, no smoke and doesn't feel dangerously hot but the expansion tank is quite toasty. All radiator hoses feel toasty so obviously there's flow through it. I'm thinking that this might be a jammed or damaged thermostat? The coolant leakage might just be from him being a bit happy-go-lucky topping up the header tank, as it's got no markings and is a little thing at best. Might drain a bit, see how that changes things. Or at worst a dodgy waterpump (slipping at low speeds?). Anyone got any common pointers, or what to look for? I'm going to get him to change the thermo as a matter of trial as it's only a cheap part. |
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klunk
Part of things
1949 Rover P3 V8
Posts: 371
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Jun 25, 2007 12:26:35 GMT
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Sounds to me like he has run it a bit low on water, which has let a bit of air in the system. Get him to run it up and let it run whilst stationary with the rad cap off 'til it gets to that 'spike' in the heat. At this point it should give a nice big burp! Which should free the airlock and stop the heat spikes. My Rover tends to drop a bit of coolant every time I give it the 'biggun' Again I do not have an elaborate header tank, so am rarelly accurate with my topping up. If it still persists, make sure the thermostat is ok, and if you are doing that, you may as well stick a new one in, for the sake of the effort and cost. usera.imagecave.com/Klunk/Rover/ |
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Jun 25, 2007 12:30:12 GMT
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I have to say your P3 is "t3h forkin' w1n", it's bloody fantastic ;D I think I've seen it in the flesh but not for a while. It's brilliaaaaaaaaaaant! Thanks for the tip! Does sound like it might be an airlock then, I'll drop around and see if we can get it to do it!  Ta! |
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Jun 25, 2007 12:36:27 GMT
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I thought I was the only person who cleared airlocks that way. I got such a bolloking off my mechanic mates for doing that LOL.
Yeah, I'd check airlock first, then thermostat and then sounds like you know what the score is with the cooling system anyway... fan closer to rad, fit a shrowd.
Also check its not a 4 pot rad.
Also also check the rad isn't clogged up.
Also also check the fan is opperating correctly (i prsume its electric?)
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1937 Austin Street Rod - 1941 Wolseley Not Rod - 1956 Humber Hawk - 1957 Daimler Conquest - 1966 Buick LeSabre - 1968 Plymouth Sport Fury - 1968 Ford Galaxie - 1969 Ford Country Squire - 1969 Mercury Marquis - 1970 Morris Minor - 1970 Buick Skylark - 1970 Ford Galaxie - 1971 Ford Galaxie - 1976 Continental Mark IV - 1976 Ford Capri - 1976 Rover V8 - 1994 Ford Fiesta
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klunk
Part of things
1949 Rover P3 V8
Posts: 371
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Jun 25, 2007 12:36:28 GMT
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Cheers for your comments re the old girl.
Definitely get his Fan relocated too, as close as you can to the radiator and get a decent shroud going on to. This made a hell of a difference when I first put my engine etc together. I tried water wetter, everything, when all it needed was a decent fan on the back of the rad pulling air through, not on the front pushing as I first did. And the shrouding helped too.
Good Luck
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Jun 25, 2007 12:37:08 GMT
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also also also also
check the compression...
check the timing...
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1937 Austin Street Rod - 1941 Wolseley Not Rod - 1956 Humber Hawk - 1957 Daimler Conquest - 1966 Buick LeSabre - 1968 Plymouth Sport Fury - 1968 Ford Galaxie - 1969 Ford Country Squire - 1969 Mercury Marquis - 1970 Morris Minor - 1970 Buick Skylark - 1970 Ford Galaxie - 1971 Ford Galaxie - 1976 Continental Mark IV - 1976 Ford Capri - 1976 Rover V8 - 1994 Ford Fiesta
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Jun 25, 2007 12:39:06 GMT
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Yea, it is. It's one of those in-the-hose-Kenlowe knobs and comes off and on alright, runs on manual as well though.
Going to go over when it stops raining and try the "3rd degree burns" airlock flush, then change the thermo and flush and refill the coolant. Might see if we can squeeze something in to route air into the rad rather than over it for the fan for the meantime.
Ta!
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Jun 25, 2007 14:14:18 GMT
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Well, just got back in - did the cap trick and lo, a big "GLUG" and a load of foam out of the tank then it settled down. Sealed it back up and let it idle, fan came on, seemed to stay just under 3/4. On the road now it seems not bad either but it does tend to eek over 3/4 which is just too much for my liking. So, going to see what I can do about a shroud or moving the fans, then we'll consider flushing the old coolant out and putting in a new thermo as well. Probably worth it whilst we're there |
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Jun 25, 2007 14:21:35 GMT
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Forgot to say, if moving the fan sorts it out and manages to haul the temps down to nearer a half when just sat idling, that'd do the trick. More later! |
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Last Edit: Jun 25, 2007 14:21:54 GMT by Lewis
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bstardchild
Club Retro Rides Member
Posts: 14,901
Club RR Member Number: 71
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Rover V8 temperature issuebstardchild
@bstardchild
Club Retro Rides Member 71
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Jun 25, 2007 14:38:07 GMT
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Yea, it is. It's one of those in-the-hose-Kenlowe knobs and comes off and on alright, runs on manual as well though. Is the sensor thing in the rad feed or return hose Only reason I ask is I had mine rigged up on the rad feed hose and the blooming thing was so eratic - used to chime in an out all the time as it felt like it Changed it to the return hose and the system is a lot more stable and only comes on in traffic which is exactly what I wanted |
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Jun 25, 2007 14:43:29 GMT
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I think the Kenlowe's wired up OK. I'll check though. It only comes on when the gauge goes over ~1/2 then just sits there usually. It may still have airlocks, so I've been told to (for other's reference:) |
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Jun 25, 2007 17:12:13 GMT
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Well, took almost 3-4 litres into the system. That fixed it ;D Works a dream now, even cools down in traffic on the leccy fan then switches off and idles contendely. Top dawg! |
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Jun 25, 2007 17:14:25 GMT
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Well done.
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Jun 25, 2007 17:14:59 GMT
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Yea, simple things first really isn't it, lol! Must remember that next time |
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klunk
Part of things
1949 Rover P3 V8
Posts: 371
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Jun 25, 2007 21:23:27 GMT
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Glad to hear that you got it sorted. I have a thermostat that tucks into the top hose with an adjustable knob on the controler mounted on the side of the rad shell. Only about £24 from Car Builder Solutions. www.nfauto.co.uk/Or Europaspares. www.europaspares.com/Or Staffordshire Vehicle Components www.s-v-c.co.uk/prod_fans.htmlThis combined with a nice 14 in Kenlowe spiral fan this seems to work absolutely brilliantly. Even when I took it drag racing, where I barely truned it off for four hours! My 4 year old son who was strapped in the back was encouraging me....honest...LOL usera.imagecave.com/Klunk/Rover/06Outlaws.jpg You can just make him out, in the back Loving every minute of it!! Also as a word of advise from someone who already has the T-Shirt. Never ever use those tags that go through the rad, they eventually wear through the fins and shag your radiator. Learnt that the expensive way. Make a nice bit of bracketry and solid mount it to the surround. |
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Jun 25, 2007 21:28:44 GMT
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Yea - got a set of these on my existing Kenlowes on the V8 Sprint. Not too keen on the idea as those fan motors put out a lot of torque on a relatively weak structure. However, my rad's quite deep and the ties are well supported F&R, so it may pass the time OK. I intend to change the rad & fan layout in that soon anyway, so will rivet up a little frame for them Ta! |
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