Heads are off :-)

[Gazzab]

Well my heads are off. Have got some oil in water. The last rebuild was done by Raceproved - well sort of. They had closed and the owner completed it at home for me. Sealant a plenty etc but coolant getting past the copper gaskets. Time for decent gaskets.

[Jhonno]

Are your liners wire rung?

[Gazzab]

Jhonno said:

Are your liners wire rung?

Yes they are.

[Gazzab]

[spitfire4v8]

Has it failed where the two ends of the wire meet ?

[Jhonno]

Cometic head gaskets this time?

Performance Unlimited are a very decent supplier..

[Gazzab]

Am hoping to get thicker cometic to help with CR. Not sure how to get thicker ones.
Apparently coolant has been pushing past the copper gasket at the rear of the head. Not helped by all the sealant. The o rings looked old but locked. Oh and covered in sealant.

[spitfire4v8]

Who's building the engine ? presumably they know where to get relevant gaskets ?

[Jhonno]

Gazzab said:

Am hoping to get thicker cometic to help with CR. Not sure how to get thicker ones.
Apparently coolant has been pushing past the copper gasket at the rear of the head. Not helped by all the sealant. The o rings looked old but locked. Oh and covered in sealant.

What is wrong with your CR?

[Gazzab]

Jhonno said:

Gazzab said:

Am hoping to get thicker cometic to help with CR. Not sure how to get thicker ones.
Apparently coolant has been pushing past the copper gasket at the rear of the head. Not helped by all the sealant. The o rings looked old but locked. Oh and covered in sealant.

What is wrong with your CR?

It’s a red rose with heads skimmed a couple of times.

[Gazzab]

spitfire4v8 said:

Who's building the engine ? presumably they know where to get relevant gaskets ?

They know where to get them but I mentioned the thicker ones.

[ukkid35]

Will you be taking the sump off and changing the bearings?

Very little work involved since the engine is out

[Gazzab]

ukkid35 said:

Will you be taking the sump off and changing the bearings?

Very little work involved since the engine is out

Hadn’t thought about it. Suspect they are the original bearings.

[spitfire4v8]

Good stuff, glad to know they are on top of things.

When the oil/water pump was rebuilt the crank bearings would probably have been changed then ? I can't remember for sure but when you are that far into the engine it would have been foolish not to .. (but, you know ... ) .. but that's a discussion to have with the builders and see what they say.

[Bogsye]

Gazzab said:

Hadn’t thought about it. Suspect they are the original bearings.

A familliar scenario...I'm this far so I might as well check... I ended up doing all the bearing shells, rings, timing chain, and associated needle rollers. Wasn't too expensive on parts either.

I'll second Performance Unlimited. Got my piston rings from there and he was good to deal with

Brian

[Jhonno]

It would be daft not to refresh the whole thing whilst you are here.. The costs are small once you are here.

I got mine from www.realsteel.co.uk/ - Clevite 77 bearings.

[Jhonno]

Gazzab said:

It’s a red rose with heads skimmed a couple of times.

Just light skims? I'd imagine they would be fine tbh.. Unless you are suffering with det issues?

[spitfire4v8]

I've got a very fresh 4.7 in work right now that's in for running issues and on testing the compressions it's making 260psi on cranking .. not sure how far you can go on road fuel before it becomes an issue ?

[Jhonno]

spitfire4v8 said:

I've got a very fresh 4.7 in work right now that's in for running issues and on testing the compressions it's making 260psi on cranking .. not sure how far you can go on road fuel before it becomes an issue ?

Mine goes to about 300psi.. I don't think you noticed an issue with mine?

[spitfire4v8]

300 is massive, at what point do they start to diesel ?