Car -- Guess the fault... (now just talk about crap)

[pdg]

See if anyone can:

1. Identify the parts.
2. Identify what is wrong with the parts.
3. Identify what caused the problem.

Car is a '98 Discovery 300tdi.

First to get all 3 gets

https://i834.photobucket.com/albums/zz267/pdg555/PICT0968_zps10c63312.jpg
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Any and all advice given should not be followed - if you have to ask it means you don't know so get a man in to do it for you.

[Marmalade]

push rods
bent
cam belt
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Nobby the Bastard: How yo tell the difference between the actual japanese and her just screaming because she's had live fish stuck up her arse? [url=https://www.nicks-shop.co.uk/bcf-goodies-15-c.aspGet BCF stickers and things here[/url] Reflective helmet stickers - Legal requirement in france - Clicky

[pdg]

Marmalade 3 for 3.

That was quicker than I thought
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Any and all advice given should not be followed - if you have to ask it means you don't know so get a man in to do it for you.

[andyscooter]

got two was thinking somthing else caused it
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gilera runner vxr200 (chavped)
if its spelt wrong its my fat fingers and daft auto correct on my tablet

[stinkwheel]

1) Coat hooks.
2) Supposed to be push rods.
3) Car is a '98 Discovery 300tdi.
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“Rule one: Always stick around for one more drink. That's when things happen. That's when you find out everything you want to know.”
I did the 2010 Round Britain Rally on my 350 Bullet. 89 landmarks, 3 months, 9,500 miles.

[Ariel Badger]

How are the valves and pistons?
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Bikers make great organ donors, get 115 on your licence today.

[pdg]

[billytwomirro...]

How many miles on the engine?i'm booked in for my defender a week on monday for a cambelt, i'm on 136000.

[pdg]

141k and a bit...

I have yet to decide whether I can be bothered to fix it.
____________________
Any and all advice given should not be followed - if you have to ask it means you don't know so get a man in to do it for you.

[Nobby the Bastard]

Push road AND cam belt? I thought the point of the cam belt was that you didn't need pushrods...
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trevor saxe-coburg-gotha:"Remember this simple rule - scooters are for men who like to feel the breeze on their huge, flapping cunt lips."
Triumph Sprint ST 1050

[pdg]

No, the point of a cambelt is thus:

So the manufacturers have yet another 'service item'.

Fine, they dress it up as "ooh, it's quieter than a camchain, it uses less power so makes the engine more efficient blah blah."

No, what it actually does is let them sell another consumable item and every now and again a buttload of parts when it snaps. It's pretty easy to design a valve safe engine, but they don't bother because then you don't need to buy a bucket of parts if the belt fails.

Cynical? Moi? Nooooooooo

Looks like the series 3 is going back into service
____________________
Any and all advice given should not be followed - if you have to ask it means you don't know so get a man in to do it for you.

[Nobby the Bastard]

Buuuuuuuuuuuuuuuuuuut....

Push-rods are needed so that the cams on the crank can work the valves.

A cam belt removes the need for the pushrods because it moves the cams directly above the valves.


Arrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrgh!
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trevor saxe-coburg-gotha:"Remember this simple rule - scooters are for men who like to feel the breeze on their huge, flapping cunt lips."
Triumph Sprint ST 1050

[Pete.]

I can't think of any crank that has integral cams. Pushrods are used when the camshaft is mounted in the block rather than in the head, still needs to be driven.
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a.k.a 'Geri'

132.9mph off and walked away. Gear is good, gear is good, gear is very very good

[pdg]

Buuuuuuuuuuuuuut...

The cams aren't on the crank, they are on the camshaft. The camshaft has to turn at 1/2 crank speed on a 4 stroke engine.

Using a belt doesn't mean the camshaft is moved above the valves - having an overhead cam engine moves the camshaft above the valves...

Some single overhead cam engines still use rockers. I have seen overhead cam engines where the camshaft is driven by a chain (i.e. most OHC bike engines), and others where the camshaft is driven by gears.

What I have is a side cam engine - 'usually' a side cam engine use a chain (or gears) to drive the camshaft, but this one has a belt.

In actuality, a side cam engine is 'better' than an overhead cam due to the pushrods and layout of the valvetrain. In an overhead cam engine there is no 'weak point' in the valvetrain so in the event of belt failure the valves are driven straight through the piston crowns - at least in this design of engine the pushrods bend and in most cases the valves, pistons, camshaft and followers remain serviceable.
____________________
Any and all advice given should not be followed - if you have to ask it means you don't know so get a man in to do it for you.

[Pete.]

Big-ends take a beating though.
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a.k.a 'Geri'

132.9mph off and walked away. Gear is good, gear is good, gear is very very good

[Nobby the Bastard]

Yes, you are all right, the crank spins at half the speed of the cam. I blame it on the 4 cans of Kroeny I've drunk...

Even so, cam belt rather than gear driven cam with push rods?

There are engineers out there removing their testicles with blunt spoons just at the thought...
____________________
trevor saxe-coburg-gotha:"Remember this simple rule - scooters are for men who like to feel the breeze on their huge, flapping cunt lips."
Triumph Sprint ST 1050

[Pete.]

An engineer would never use a blunt spoon. It would be sharpened first - probably to 4 thou.
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a.k.a 'Geri'

132.9mph off and walked away. Gear is good, gear is good, gear is very very good

[pdg]

[JonB]

I personally try and avoid cars with cam-belts now. Such an expensive service item and not massively quieter. The Civic 2.2 diesel is a cam-chain and may need tightening, say every 150k miles or so, but about it.
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Be careful whose advice you buy, but, be patient with those who supply it. Advice is a form of nostalgia, dispensing it is a way of fishing the past from the disposal, wiping it off, painting over the ugly parts and recycling it for more than it?s worth.

[Polarbear]

Nissan said that when they made the 2nd shape micra. Trouble is they put a chocolate cam chain in it, and it was an engine out job to repair it.

AFAIK Nissan never acknowledged it or did a recall either.

I think I'd rather have a belt and change it every 50000 miles or so.
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Triumph Trophy Launch Edition

[lihp]

2nd shape micra had no issues with the camchain apart from it started rattling around 70k but never caused issues.

3rd shape had loads of issues, stretching within 2 years to the point that it threw the timing out.
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covent.gardens: lihp is my most favourite member ever

[-]

Pushrods? I thought only archaic British engines used them.

Oh...., it's a Land Rover. A bit like Harleys really - crap old technology, adored by mid life crisis cases with a false belief that old technology is better!

[Polarbear]

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