Spot on, for decades Ive used a diamond slurry charged metal lapping plate. I can acheive a flatness across the face of the block or head within .0005 tenths removing minimul material. I think its crazy as phuck that machineshops mill off .005 to .020 off from the block or head. Thank you for posting your video, great job sir.
Great idea although I’d take one more step and adhere sand paper or emery cloth to the plate instead of lapping compound. The reason is the the compound will be wearing the tool as well as the head/block. I’m planning to lap my Model A head and block soon. The method I’ll be using is a piece of tempered glass laid on my machined cast iron table saw with sanding cloth lightly glued with low strength contact cement to the glass. I’ll cut up some 6”x48” sanding belts .
Yes that is a great idea , the only reason I did it this way is that I thought it was going to be quick lol Turns out it wasn’t. But we got there in the end 👌🏽
Crushed carborundum stone , oil , and a section of plate glass ... will true up that oil stone. Dont know about the block though, as you approach a perfect true ,air pressure starts to clamp everything together , making it hard to slide the piece .
What is that lapping tool called? I know i can make it as u have done but have seen bought ones. Also were u using a sand paper inbetween the plate and block?
Spot on, for decades Ive used a diamond slurry charged metal lapping plate. I can acheive a flatness across the face of the block or head within .0005 tenths removing minimul material. I think its crazy as phuck that machineshops mill off .005 to .020 off from the block or head. Thank you for posting your video, great job sir.
Thank you very much for your input sir , very much appreciated 👌🏽👌🏽
Block deck looks good. Different types of head gaskets prefer different roughness averages. I generally use copper spray sealant as well.
Yes that definitely helps 👌🏽
Great idea although I’d take one more step and adhere sand paper or emery cloth to the plate instead of lapping compound. The reason is the the compound will be wearing the tool as well as the head/block.
I’m planning to lap my Model A head and block soon. The method I’ll be using is a piece of tempered glass laid on my machined cast iron table saw with sanding cloth lightly glued with low strength contact cement to the glass. I’ll cut up some 6”x48” sanding belts .
Yes that is a great idea , the only reason I did it this way is that I thought it was going to be quick lol
Turns out it wasn’t.
But we got there in the end 👌🏽
Debur the coolant holes to keep metal out of the block and pump. The entire block needs to be flushed with pressure.
Yes it surly did 👌🏽👌🏽
Crushed carborundum stone , oil , and a section of plate glass ... will true up that oil stone.
Dont know about the block though, as you approach a perfect true ,air pressure starts to clamp everything together , making it hard to slide the piece .
Took some time I tell you 😅👌🏽
Good point (though it is surface tension not air pressure)
Nice done
Cheers mate
Wow good idea!!!
Cheap and simple 👌🏽👌🏽
Satisfying👌🏻 how do you protect it in storage?
Under the bench with an oily rag over it 👌🏽
What is that lapping tool called? I know i can make it as u have done but have seen bought ones. Also were u using a sand paper inbetween the plate and block?
It’s just a piece of mild steel plate, nothing specific, I was using Valve cutting / grinding Paste between the plate and the Block
What size is that steel plate?
It’s about 20mm thick , 120mm / 400mm
I don't recommend it.. you risk to haveedges not flat
It’s got to be 10 times better than it was
I'm sanding my 7m right now I done it with my 2jz a piece of granite slab and sand paper my 2jz runs great I beat the crap out of it