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[cem_devecioglu]

original carbon clean is an expensive procedure 


http://www.youtube.com/watch?v=oLroOL3Lmsg

[Kevin Wood]

I've opened up plenty of engines with 6 figure mileages and never seen more than a very thin coating of carbon on anything. This thin coating is actually good. It reduces heat loss from the charge in the cylinder into the piston and head, making the engine more efficient and reducing the temperature of the pistons. Modern engines do not need any form of decarbonising full stop. Snake oil water.

[cem_devecioglu]

I've opened up plenty of engines with 6 figure mileages and never seen more than a very thin coating of carbon on anything. This thin coating is actually good. It reduces heat loss from the charge in the cylinder into the piston and head, making the engine more efficient and reducing the temperature of the pistons. Modern engines do not need any form of decarbonising full stop. Snake oil water.

Kevin you may have opened some number of engines which may be serviced properly.. I have seen numerous old engines with real crud in mechanic shops..  and also once they are free of this carbon buildup it looses power. first hand experience.. not google..

[Magwheels]

Normally its the back of the valves that get the worst of the carbon build up and this can really affect performance as it affects flow.
I would be more interested if it could clean the crap of the inside of my intake manifold (due to the EGR) without me having to take the thing apart. Trouble is I don't believe it would work and would just be a waste of time and money. Sometimes the only way to do things is to pull the engine apart and do it manually.

Oh what fun! 

[Webby the Bear]

When we talk of ''modern'' engines i'm assuming the omega comes under that umbrella?

[Kevin Wood]

When we talk of ''modern'' engines i'm assuming the omega comes under that umbrella?

Yes, anything with a reasonably efficient head design and fuel injection. In fact, I'd go as far as to say that the late carb engined cars were still pretty decent, so we're going back to vintage cars before the need for a regular decoke existed IMHO.

[cem_devecioglu]

When we talk of ''modern'' engines i'm assuming the omega comes under that umbrella?

obviously.. the only addition to modern engines are variable valve timing that the omegas dont have..   


but practically it creates more trouble (buy adding to the maintenance cost) than it brings..


I have seen numerous bimmers with faulty vanos unit that were never repaired properly.. 


also on new-ish renault engines -called de-pahser pulley- its a frequent change item at 60 k km intervals   (although the service dont admit)

[Webby the Bear]

When we talk of ''modern'' engines i'm assuming the omega comes under that umbrella?

Yes, anything with a reasonably efficient head design and fuel injection. In fact, I'd go as far as to say that the late carb engined cars were still pretty decent, so we're going back to vintage cars before the need for a regular decoke existed IMHO.

Got ya 

Well, i've took apart lots of engines in the workshop but i dont recall any carbon build up... or their age. 

i have however had the omega stripped down and rebuilt. the only thing i noticed was some on the valves. but surely i'd expect that from a cylinder head that had been in their 13 years? and even though there was some it wasnt as though the valve operation was compromised. flow, perhaps... but thats another story.

how on earth would water get this age old built up carbon off? 

[cem_devecioglu]

When we talk of ''modern'' engines i'm assuming the omega comes under that umbrella?

Yes, anything with a reasonably efficient head design and fuel injection. In fact, I'd go as far as to say that the late carb engined cars were still pretty decent, so we're going back to vintage cars before the need for a regular decoke existed IMHO.

Got ya 

Well, i've took apart lots of engines in the workshop but i dont recall any carbon build up... or their age. 

i have however had the omega stripped down and rebuilt. the only thing i noticed was some on the valves. but surely i'd expect that from a cylinder head that had been in their 13 years? and even though there was some it wasnt as though the valve operation was compromised. flow, perhaps... but thats another story.

how on earth would water get this age old built up carbon off? 

 a proper pressurized water can cut through steel let alone cleaning

[Webby the Bear]

When we talk of ''modern'' engines i'm assuming the omega comes under that umbrella?

Yes, anything with a reasonably efficient head design and fuel injection. In fact, I'd go as far as to say that the late carb engined cars were still pretty decent, so we're going back to vintage cars before the need for a regular decoke existed IMHO.

Got ya 

Well, i've took apart lots of engines in the workshop but i dont recall any carbon build up... or their age. 

i have however had the omega stripped down and rebuilt. the only thing i noticed was some on the valves. but surely i'd expect that from a cylinder head that had been in their 13 years? and even though there was some it wasnt as though the valve operation was compromised. flow, perhaps... but thats another story.

how on earth would water get this age old built up carbon off? 

 a proper pressurized water can cut through steel let alone cleaning

i meant in the way that the chap on the vid was pouring the water in

[cem_devecioglu]

When we talk of ''modern'' engines i'm assuming the omega comes under that umbrella?

Yes, anything with a reasonably efficient head design and fuel injection. In fact, I'd go as far as to say that the late carb engined cars were still pretty decent, so we're going back to vintage cars before the need for a regular decoke existed IMHO.

Got ya 

Well, i've took apart lots of engines in the workshop but i dont recall any carbon build up... or their age. 

i have however had the omega stripped down and rebuilt. the only thing i noticed was some on the valves. but surely i'd expect that from a cylinder head that had been in their 13 years? and even though there was some it wasnt as though the valve operation was compromised. flow, perhaps... but thats another story.

how on earth would water get this age old built up carbon off? 

 a proper pressurized water can cut through steel let alone cleaning

i meant in the way that the chap on the vid was pouring the water in

forget that chap.. just google steam cleaning..

[05omegav6]

A mate has a Mini(not) Cooper S petrol, '56/'07 iirc and apparently it has a Peugeot engine which is prone to coking, requiring a clean every 60k or so...

Principle discussed here...

http://www.youtube.com/watch?v=cGYNuoCigGY&feature=kp