Where do you guys go to get your housings lapped? i'min the process of rebuilding my SE engine and would like to get the housings lapped
thanks
dom

 

u mean cast irons?

 

opps my bad, yea i ment my irons

 

iron=housing too. Youd spend alot of $ to ship em to a specialist. How bad are they? Do they need alot taken off? You can lap them at home. Get some valve grinding compound. Lay one housing down (say rear for instance) on the table, face up. The put the compound on the face of the housing. Take the intermediate housing and lay it on top. Make figure 8's till your arms fall off LOL. Then clean em up and see how they look. It s slow going but it will work. Laying plate on plate means half the work (your doing 2 surfaces at once) and using two known flat surfaces insures you end up with good flat faces. Repeat the process with the front housing and the other side of the intermediate plate.

 

My guy charges $130 and he's very good. He's the same guy that Pettit and Carlos lopez send their stuff to.

Precision Industrial Tool
Luis J Forero
954 370 9998

Shipping Cost might be much though.

 

130 for all?

 

yes!!

 

Nice! I did mine the hard way, with valve grinding compound, took a long time but works!

 

I would never recommend trying to lap your housings at home, but a plate of glass is the closest thing to perfectly flat you're going to find for reasonable money. Now what you should really do is call up local machine shops and ask them if they have, or know someone that has, a lapping table big enough for a 20" part.

 

The only down side to lapping is if tooo much needs to be removed to make the surface FLAT again you eat through the nitrade making yourself a set of housings that wont last. I think Racing Beat reccomends .004 of and inch most on each surface to be removed.

 

If the housings need to be lapped, the nitride coating is LONG gone.

 

wow, those look really nice.
how did you remove the oil filler neck?

 

I just pulled it out

 

Have aby of you guys lapped them your selves?? Post pics if you have

 

Not a good Idea. The guy who did mine said the person who did it b4, tried by hand and my irons where all warped.