i would imagine the water jacket needs to be machined, then pins inserted. Is it necessary to bore/hone the block after installing the pins? do they need to be welded in?

If someone could explain this procedure in detail or post a link to a site that explains it, i would greatly appreciate it.

thanks guys.


i want to learn more about this, and possibly get it done on my block.




[Modified by LS-G, 10:17 PM 6/8/2002]

 

^^^

 

It's a process of strutting the cylinders to the outside water jacket.

Honing would definitely be a good idea after pinning.

I haven't seen a pinned block yet but this is something we can definitely do once the precisely (CNC) machined pins/struts are made.

 

I know of "posting" the cylinder bores to the outer block casing. You use threaded rod made of a material with a similar thermal expansion rate to the engine block material. In the correct locations, a hole is drilled through the engine block and threaded for the rods. The rods are screwed up to the cylinder bores and a very small amount of preload is put on them. The threaded holes in the block are sealed up with a good epoxy (JB Weld or such)

The threaded posts support the cylinder bores almost like a blockguard. But instead the posts are located acording to the location of the highest thrust load that the pistons place on the cylinder bores. This without the cooling problems of a blockguard.

I'm not postitive on all of the techicals but I IMed you with contact info of someone that will. Good luck.


[Modified by SLPR, 5:57 PM 6/8/2002]