9 replies to this topic

[billzer]

looking for some advice on my head gasket im confused to which side it fits on the block on the block there is a,,, A mark on the block and one on the gasket does the mark on the gasket face upwards or downwards??

[Cooperman]

Most head gaskets are marked 'top' and 'front'. I'm sure the BK450 and AF460, which are really the only good, ones are so marked

[billzer]

thanks i have done one before that had top and front stamped on it this one has only one mark on one side like a v or A mark on it it has the same mark on top of the block i suppose the mark should face on top?

[Cooperman]

What is the part number of the gasket? It needs to be the black BK460 or the copper faced AF460. Any other gasket may be a 'cheapie' inferior one.

[billzer]

its the black one

[Cooperman]

Surely it will only go on one way.

[billzer]

i think your right

[Cooperman]

One point if I may. When fitting the black gasket fit it 'dry' with no smear of oil on it. When fitting a copper-faced gasket a very light smear of engine oil on the faces is a good thing to do.

[billzer]

thanks but things got a whole lot worse tightened head up manifold ect adjusted tappets ect, and it runs like crap starts on the button , and runs even until it warms up then it runs bad checked all pipes ect , i did jumble the valves and wonder if ive ground them in enough , there was some light pitting visible feel like gining up

[Cooperman]

Doesn'r sound like a valve seat issue. If it was it would run rough all the time and not just when warm.
It could be a sensor as those MPI's are a bit of a pain in terms of DIY diagnosis. You might need to get it on a diagnostic computer. Try asking on the MPI specific forum on here.