Renault Clio Head

These circular bits are the pre combustion chambers, (pre-cups)

You can hace new ones fitted, but they need to be pressed in then the head needs to be skimmed, just to make sure that they are flat in line with the head.

BUT, I can guarantee you that if you was to fit new ones then remove the head in 6 months time, these too would have little cracks in them.

If the cracks are only small, I would leave it and fit the head.

Even after getting a head back from testing and skimming by a quality firm, I have noticed these cracks, they allways say "little cracks dont matter"

Regards Slim

They have half decent cracks in them Is there any chance of them falling into the bore ? Would i loose any compression from them ?

Cheers

Ed

Slightly off topic, but did you see the item on BBC's Watchdog yesterday about Clio bonets flying open?

Yes (and not off topic)..eeewwwwwwww!

PDH

Undeniable proof that car drivers can't even do something as simple as shutting a bonnet properly.

On wagons, it's quite common for the catches to seize up and not spring back. That's why you CHECK that it has before driving off.

The message from Art Deco contains these words:

Must be recent ones - the old ones open forwards.

Not too recent. Pre-99, I think.

The message from Art Deco contains these words:

That's recent compared to any cars I buy!

Me too. I've never owned anything that wasn't at least eight years old. Any car that can't be fixed at the roadside is, in my humble opinion, a liability.

Then they are cheap s**te too. I've never on my many many cars had a safety catch that jams open. And the fact that Renault totally redesigned the catch on later models says they're lying bastards.

Had the same sort of thing on my BMW. The driver's door handle broke off. The replacement was made of a totally different material and in stock at my dealer. But not a known fault according to BMW. Lying bastards the lot of them.

Not perhaps as good as you might think. Saw the bonnet open on an old XJ6 which is front hinged, but it opened to about 45 degrees at speed due to the airflow. So although it didn't do any damage you wouldn't have been able to see over it.

I have, on several cars. Marina and Corolla KE30 spring to mind.

Never had either. Was that through lack of lubrication? The Clio one appeared to jam on a rivet head or similar.

The message from Chris Bolus contains these words:

I remember a bloke I worked with who had a Marina bonnet fly up on the M4 once. He was an ex Welsh gold miner and had the physique and attitude to go with it. His comment was "I hammered it back with my fist and it stayed there till I got home". Just about anything Paul hammered with his fist would quail in a corner till it was given leave to do otherwise.