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400 Series General Forum for the Volvo 440, 460 and 480 cars |
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cam belts...do they really go pingViews : 4356 Replies : 43Users Viewing This Thread : |
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Oct 18th, 2007, 14:51 | #41 | |
Zen
Last Online: Oct 31st, 2007 23:39
Join Date: Aug 2007
Location: Hawick & Sutton Coldfield
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The Vauxhall Omega is German, anyway. It's an Opel. Though, it seems part of your problem is that Vauxhall are useless for customer service (isn't every marque now, though...). I'm a fan of Japanese engineering, if not their actual run of the mill cars. (I do like the stuff that is utterly insane, though. I tried to convince my girlfriend she would like a Nissan Pao, she's having none of it).
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Cars: "Chewbacca" - metallic green 1995 Volvo 850 GLT 20v Manual Estate "Enola Gay" Galaxy Grey 2006 Mazda RX8 192. Previously owned 118 cars including 3 x 480, 1 x 244, 2 x 245, 1 x 740, 1 x 360 GLT. Not goth. Just wears black. Geeky, retro, musician, writer, fixer. |
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Oct 18th, 2007, 15:38 | #42 |
VOC Member
Last Online: Jun 3rd, 2024 21:22
Join Date: Jun 2006
Location: Selby, North Yorkshire
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For what they cost, and considering the potential disaster, I'd agree that the cambelt should be changed at around three-quarters of it's theoretical service life. On my 97 V70 the published interval is 80K or 8 years. Mine was changed at 50-oddK and then again at 120k.
I got the work done by Volvo. It's much the same cost as an indy (£220 or so), and I reckon if it ever went bang there would be grounds for a claim on Volvo. Got the auxiliary belt changed at the same time too. It has to come off anyway, and it's only a few bob! Cheers Jack |
Oct 18th, 2007, 17:12 | #43 |
Member
Last Online: Apr 13th, 2008 16:04
Join Date: Dec 2004
Location: Ipswich
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Oh right! I thought the Essex V6 was OHC like the 2.8i engine. Ah well, that explains why it's quite a tappety engine then! I'll have a look at that Panoz-Zytek engine - sounds pretty unique.
I actually did some project work on experimenting with valves on engines last year. It was actually found that for speed, precision and reliability, mechanical valves are still the best. We tried solenoids, but the ones that were available to us were rubbish, and never really worked properly. The ones they used in the F1 engine did work, but they are very complicated and require a lot of work to setup properly. The thing is, an electrical solenoid can never be as fast as the mechanical lobe hitting the valve. There is always a slight delay, and although that can be accounted for, it still limits the ability to rev. Hydraulics, let alone pneumatics were seen to be far to 'lazy' systems to work sufficiently. The hydraulic tappets seem to work well these days, especially with the thinner oils. The hydraulic tappets in my younger brother's Vectra 2.0 seem to be rubbish in comparison to my ones though. He's already had a valve go, and it taps like mad, especially when cold. Even on a cold morning, mine's as quiet as a mouse! So the RX-8 sounds like a good setup then! I understood it just 'burnt oil' as if it were leaking like an old Fiesta or something! If it injects it, then I suppose that explains it - and I can see why it's running life is also increased. When I say it 'needs to be revved' I mean in driveability respect. As in it makes it a pain to drive round town when there's little torque at lower revs. I don't know, admitedly, as I have never ridden in one. But compared to a V8 which will pick up well from pretty much any rpm, the rotary engines I thought were quite laggy. Almost like having a big turbo. A bit tedious to drive at slow speeds, and only really make sense when you're revving away merrily. A modern CVT gearbox (which are also supposed to be really effective these days) mated with a couple of ****el engines actually sounds perfect! Especially if they've got the seals sorted out. A suppose a turbo would sort out some torque for me when zipping around town...!
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1989 Volvo 340 GL 1.7 1995 Volvo 460 Si Turbo 1997 Volvo S90 3.0 CD 24v |
Oct 18th, 2007, 20:17 | #44 | |
T5's, drool.........
Last Online: Mar 22nd, 2010 20:09
Join Date: Oct 2007
Location: Claughton, Birkenhead
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Well as has been mentioned elsewhere on the forum, cars are just not no longer built to last. Yes manufacturers have extended service lives but cynical old me feels that this is just yet another way to extract more hard earned out of us all when it comes to the larger more intensive services that an extended regime entails!!! |
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