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[Lazydocker]

Have I been taken in by a little joke here? Should the heads go in the dishwasher?

Someone give me a serious answer

Nope.. I was deadly serious

Of course... The other suggestions are all feasible too

[djac]

Useful bit of kit ... but quite expensive for one use ..  

although it might seem quite a bargain when you get to the 12th valve!

[Entwood]

Useful bit of kit ... but quite expensive for one use ..  

although it might seem quite a bargain when you get to the 12th valve!

Very true ..... Last time I used one of the manual lappers was on an MGB engine ...  only 8 valves to do ..

[ChevetteNick]

I used to lap valves for a living and would only recommend doing them by hand and using the course paste. You're looking at it taking a good 10mins per valve, that was with reground valves and seats, if you want a good job being done.
I personally wouldn't use the dishwasher purely on health grounds
If the ports are full of moist gunk then wipe them dry first, the inlets should be ok as the petrol cleans them before entering the combustion chamber, and use petrol with an old toothbrush to clean them up before jet washing them.

[Elite Pete]

I would use Nitromors to clean the heads Scottie

[Jimbob]

Im sure mine have been through a dishwasher 

[ScottieMV6]

Thanks for all the help guys. I'll crack on with that today then!

[dbug]

......
When re-fitting the valves how do I lap them in?
 ......

One of these and a tub of grinding paste  & grind back & forth till you have an even continuous ground band on the valve seat.
People use a drill on the stem, but I've never done it that way  :-/

IMHO that does NOT give a decent face... as all the motion is in one direction. The grinding tool between the palms, rubbed back and forth, then lifted, rotated 90 degrees, and continue... is the way I was taught.. 

I know .. daft old sod .. but it works .. 

I have done it both ways in the past (with mini/metro heads) and must confess I think that they are better lapped by hand

Use of drill on valve stems good if valves/sets badly pitted.  Best to do final lapping by hand.  Used that method years ago on Cooper S's when I used to race them.

[Andy B]

.....
Use of drill on valve stems good if valves/sets badly pitted.  Best to do final lapping by hand.  Used that method years ago on Cooper S's when I used to race them.

On the last head I did, the few valves that were badly pitted I took to a local engine place & had them reground on the machine. A couple of quid each IIRC   

[MarkG]

I put my FJ1200 cylinder head and barrels in the dishwasher at max temp when the Mrs was out a couple of months ago. She came home half way through the cycle and went absolutely ballistic. When it had finished, there was flash rusting all over the barrels and white alloy furring all over. Took quite a while to clean off. Also I had to run the dishwasher empty on max temp for 3 cycles to get rid of the smell. I would not do it that way again. 

[Kevin Wood]

I put my FJ1200 cylinder head and barrels in the dishwasher at max temp when the Mrs was out a couple of months ago. She came home half way through the cycle and went absolutely ballistic. When it had finished, there was flash rusting all over the barrels and white alloy furring all over. Took quite a while to clean off. Also I had to run the dishwasher empty on max temp for 3 cycles to get rid of the smell. I would not do it that way again. 

Ahh. You used dishwasher powder in it, not Jizer, didn't you? 

Kevin

[ScottieMV6]

I put my FJ1200 cylinder head and barrels in the dishwasher at max temp when the Mrs was out a couple of months ago. She came home half way through the cycle and went absolutely ballistic. When it had finished, there was flash rusting all over the barrels and white alloy furring all over. Took quite a while to clean off. Also I had to run the dishwasher empty on max temp for 3 cycles to get rid of the smell. I would not do it that way again. 

Ahh. You used dishwasher powder in it, not Jizer, didn't you? 

Kevin

What is Jizer Kevin?

[Kevin Wood]

What is Jizer Kevin?

http://www.amazon.co.uk/Swarfega-Jizer-Litre-Degreaser-Jiz609/dp/B0001P0UAE

 

Probably not the best stuff to do the dishes in, on reflection. 

Kevin

[dbug]

JIzer is an emulsifiable Degreasing Fluid.  Widely used in industry and the automotive trade.  Rinses off with water. 

[MarkG]

Correct. I used a dishwasher tablet. If I was doing it again, I'd soak it in de-greaser and then power wash it. I would not put it in the dishwasher.