Came across these being sold on E-bay....Auction # 121754070458



Thought it was a potentially neat solution to having your valve covers machined.

 

Looks promising.

 

I just can't figure where you place them? Under the seal on the head...not likely since it would probably weep oil. But inside the valve cover gasket, then your valve cover goes on top? Then the washers would go on top of the rocker stand, under the valve cover?

 

Well TCow i reached out to the seller of these spacers and here is what he replied back.

 

Good idea, (if no leaks down the road) but for just a day or two and a tad more cash supporting your local machinist, you can have it done right by milling the pedestals. I'm still glad I machined mine after seeing this invention, just my .02.

 

Looks like a PITA to me.

 

Is there a reason why guys are not using the Haisley head studs? Just curious as I am goin to do studs this summer. Seems kind of a wash.. $430 for ARP studs/$80 spacers or machining rockers $? or the Haisley studs $490 and some grinding on the valve covers.

Stu

 

Last time I had my rocker ped's milled it was $100. Would still do it again for the $20 difference as the point of milling the pedestals down is to increase the stud thread length. Without doing it the tensile strength of the bolt exceeds the shear strength of the threads

 

Sure my machinist wouldn't charge me more then $100...so I have to agree that the proper procedure is worth it.

 

I don't know, sounds like a mess to me.

 

definitely looks like a potential leak

 

This route adds another potential leak point.

Do it the right way and have the rocker shaft pedestals machined.