Hi Guys

I've just come across this Video from the Archives, which some of you may not have seen before (In Black and White)

Where V12 Engine designers Walter Hassan and Harry Mundy are being Interviewed by Raymond Baxtor

Who seems to be remarkably well informed

Where you can also see the workings of the Timing Chain Tensioner as well as the Opus Ignition System

Which could be very useful if anyone gets a problem in that area and could have done with seeing that myself when I thought I'd broken my Timing Chain Tensioner

And could provide some interesting points for a discussion

I've put a similar copy on my 'Cherry Blossom' restoration thread, where when I've had a look at my notes from back in the day

In between I hope to continue my journey to the ownership of my very first XJS Convertible

 

Fascinating... I've watched that many times. You can kind of hear it in their words and demeanor that the V12 head design was a serious compromise for emissions and low production cost. Very pragmatic guys.

 

there is another video with Sir William Lyons , where he said about the XJ/XJS rear cage and rear suspension , engineers where NOT satisfied with it, but late in design , so they went with it anyway.

i have that V12 video also ,

 

I love this video more every time I watch it. What do they mean by "neat fuel?" They seem to say that this kind of fuel will do damage. I am running 90 octane, no ethanol. Is this doing more damage than say 93 octane with ethanol?

 

What is meant by neat fuel is liquid fuel ie not vaporized. Liquid fuel does not burn, it washes the cylinder walls cleaning the oil and increases cylinder and ring wear.

It has nothing to do with octane rating.

Octane really depends here in Aus pre-Marelli cars were setup to run on 91RON 89MON for Americans. Marelli cars have a strategy link allowing either 91 or 95RON.

Our pre-Marelli cars were listed at 284hp on 91RON.

 

Thanks Warren. We non-technical folk always need reassurance.

 

 

Even if, ethanol is no worry for petrol engines. It can only damage very old hoses which should have replaced before and some very high pressure fuel pumps. The German ADAC (like British RAC, US AAA, ...) did a study over 3 years on a car not designed to take E10. Nothing went wrong. No problems at all. The only thing this car has, was some deposits on the injectors which were high pressure injectors. A tank load of ethanol ree furl later they were gone again.

So people out to stop worrying about ethanol. Petrol is more hazardous.

 

Over here E10 gets blamed for everything from a drippy fuel line to your girlfriend getting pregnant.



Cheers
DD

 

WEll. obviously Doug. The car conks out on the way home from dinner out because of the E10, what else is there to do?

 

Yeah, same here...

"My brake pressure regulator is dead! Only because of E10!"
"My camshaft snapped in half! E10 is to blame!"
"My seat has torn! E10!!!"

I simply say: any fluid or even vapor which can be ignited with a spark will run in the engine and the engine won't take any harm. But then come the experts who will say "you can't burn hydrogen in an ICE because it will disipate through the walls because hydrogen has a smaller atomic mass and size than iron/steel molecules do and blah blah blah"

 

Ethanol will perish rubber, most cars for a very long time have used neoprene seals so no problem with E10 in these vehicles, here in Aus that's probably vehicles manufactured before 1980.

The biggest issue with Ethanol fuels here is water, there was a spate of expensive vehicles sidelined with water in the tank after filling up with E10 then filling with neat petrol.

E10 is hygroscopic so will retain water until you add regular petrol then the water can not stay suspended and drops out.