Need recommendation for v blocks

[Tarheelgarage]

I need recommendations for best source and type of V block to check cam and crankshaft on a m/c engine I'm building.

What do you recommend that will get the job done?

thanks

 

[bgott]

Probably the cheapest set you can get out of an Enco or a Travers catalog. V-blocks aren't a high tech or a high precision tool, as long as they can set on the bench and not wobble around the dial indicator does the work.

 

[Cashed]

Are you measuring lobe centers and checking if the crank is bent?

 

[Tim G]

I figure as long as it's even,don't really matter what it's made out of.I clamped the two halves together and cut the V with a hand saw.

 

[Tarheelgarage]

Are you measuring lobe centers and checking if the crank is bent?

mostly for Cam and also crank

 

[TommyD]

I disagree on precision....but then again I was a tool and die maker. I like to know where my tools are....

Whatever you get make sure they are the same height and you could also make sure the "v" is centered in the block. It just makes life simpler.

To do this use a granite plate, take a plug gage and clamp in in the "v" block. Using a height stand and indicator run the indicator ball over the plug gage and set zero. Check again. Take plug gage out of first "v" block and install in second block and run indicator over the plug gage. It SHOULD be the same, if not you know there is a difference in height.

To check centrality of "v" in block, take block with gage plug in it and lay it on it's side. Run indicator over plug gage and set zero. Turn block over 180 degrees to the other side and run indicator over it, it SHOULD read zero...if not...

I worked in a machine shop and QC would accept or reject parts seemingly on a whim. I had them check their "v" blocks this way and found one off a few thousands. Engineering 1, Quality 0...

 

[Cashed]

mostly for Cam and also crank

Do you think they are bent? What are you measuring?