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[Golfbuddy]

Hi James, Hope you get it going OK. Here's something to do with that spare engine you have, a nice winter project  

This one runs on LPG so very economical ! see, even space for the doggies !
See http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&rd=1&item=160178634291&ssPageName=STRK:MEWA:IT&ih=006
 Ken

Blimey, it's towing a 4x4.  

[Marks DTM Calib]

More torque....very little more bhp but its down to the VERY poor head design etc.

Anyway James, looks like you need some heads sorting.

I may be wrong - I read on another thread, that the inlet and exhaust can turn away from each other without damage? I may be wrong...

Trouble is that when they jump they all jump in the same direction.....inlets can retarded and exhausts can advanced but....if an engines running....they all go in one direction (due to the inertia of the cams).....I strongly suspect that the inlets will all be bent.

Ow yes.....you can start the V6 without the inlet ducting connected (saves re-fitting the aux belt gubbins etc) to make it quicker to test just in case your feeling lucky.

[Kevin Wood]

 

I think you'll be extremely lucky to survive that.

You say it had 10k to run until a cam belt change?

Think I'll add that to my list of things to do when I LPG it. It's got 20k to run but unless you know it's been done to OOF standards it obviously means nothing.

I've got a lovely Laser timing kit here, BTW  

For damage assessment purposes you could probably fit it by eye. The odd 1/2 a tooth out won't give you the drop in compression that a mullered valve will.

On the brighter side of the news, project LPG is go for next weekend. Emma suggested she ought to provide bacon butties too

Kevin

[TheBoy]

I think you'll be extremely lucky to survive that.

You say it had 10k to run until a cam belt change?

Think I'll add that to my list of things to do when I LPG it. It's got 20k to run but unless you know it's been done to OOF standards it obviously means nothing.

I've got a lovely Laser timing kit here, BTW  

For damage assessment purposes you could probably fit it by eye. The odd 1/2 a tooth out won't give you the drop in compression that a mullered valve will.

On the brighter side of the news, project LPG is go for next weekend. Emma suggested she ought to provide bacon butties too
Kevin

bugger. i fink i'm under an audi  

[Kevin Wood]

Don't despair, TB. This the advance party fitting on James' (repaired) car.

I have a plan regarding an LPG install en-masse. Just need to find out when Mr&Mrs. Kevin Wood senior go on holiday

Kevin

[TheBoy]

Don't despair, TB. This the advance party fitting on James' (repaired) car.

I have a plan regarding an LPG install en-masse. Just need to find out when Mr&Mrs. Kevin Wood senior go on holiday

Kevin

but i'm still missing out on next weeks bacon butties  

[Kevin Wood]

Anyone's welcome to pop over and see what's going on, sample butties, etc. I suspect it'll be an all-weekender too.

Kevin

[TheBoy]

Anyone's welcome to pop over and see what's going on, sample butties, etc. I suspect it'll be an all-weekender too.

Kevin

bugger, that means booze as well  

[Ken T]

Sorry if this is a silly question but.... If say you bent the inlet valves on one bank of a V6, but managed to start the car, would the repeated thump of the damaged valve onto the valve seats not knock it back into proper contact ?. OK, its only a spring pushing it back, but it was only contact with a softish piston that bent it in the first place ?. How "bendy" are the valve stems ?.

Ken

[TheBoy]

Sorry if this is a silly question but.... If say you bent the inlet valves on one bank of a V6, but managed to start the car, would the repeated thump of the damaged valve onto the valve seats not knock it back into proper contact ?. OK, its only a spring pushing it back, but it was only contact with a softish piston that bent it in the first place ?. How "bendy" are the valve stems ?.

Ken

No. it would probably knacker the stem seals as well.

[Kevin Wood]

Once an engine has knackered valves the best that can happen is that the cylinder(s) affected don't fire anymore. Failing that the valve heads get continued pounding until they break off, and then get battered between head and piston until the whole lot is scrap.

It's a real shame Rotary engines haven't taken off, in a way. No valves to worry about. They have their issues too, however.

Kevin

[sassanach]

it is not uncommon for valves to be bent into a "s" shape as well as breaking valve guides!!

[Ken T]

Thanks for that, I see what you mean, the stems would get "S"ed and there would be no way of it ever sealing again. What ever happended to Young's Modulus of Elasticity !

Ken

[Golfbuddy]

Thanks for that, I see what you mean, the stems would get "S"ed and there would be no way of it ever sealing again. What ever happended to Young's Modulus of Elasticity !

Ken

Like the rest of us, it just got old.  

[Ken T]

Once an engine has knackered valves the best that can happen is that the cylinder(s) affected don't fire anymore. Failing that the valve heads get continued pounding until they break off, and then get battered between head and piston until the whole lot is scrap.

It's a real shame Rotary engines haven't taken off, in a way. No valves to worry about. They have their issues too, however.

Kevin

Or even the Stirling Engine. We could have a large magnifying glass in the bonnet for energy supply !

Ken