Cylinder Boring

PRECISION BORING AND HONING OF YOUR STOCK CYLINDERS

Save money and get the best possible ring seal and engine life by having your stock cylinders precision bored and honed by NRHS. We bore your cylinders using a state-of-the-art CNC machine that not only bores the cylinders straight, but it squares the bore up to the case deck surface and precisely centers the bore to specifications. A special double cutter boring head is used to eliminate deflection induced distortions common with typical boring machines, and coolant is directed into the bore during the operation to ensure thermal stability for the straightest bore possible. Torque plates are used of course. We have found this boring equipment and procedure to produce the highest quality bore job possible.

 

Once bored, your cylinders are then precision honed, again with torque plates attached. During this procedure your pistons are custom fitted to the cylinders, providing a precise cylinder wall clearance that minimizes noise and enhances both ring seal and longevity. This level of precision is simply not achievable by slapping pistons into off-the-shelf cylinders. For a graphic example of this, click here.


Precision bore & hone cylinder to next oversize & fit piston

      With Piston Purchase: $55.00ea/$110.00pr

      Customer supplied pistons: - $90.00ea/$180.00pr


Precision bore & hone Twin Cam 88 cylinder to TC 95 & fit piston

      With Piston Purchase: $60.00ea/$120.00pr

      Customer supplied pistons: - $95.00ea/$195.00pr


Precision bore & hone XL883 cylinder to XL1200 & fit piston

      With Piston Purchase: $65.00ea/$130.00pr

      Customer supplied pistons: - $100.00ea/$200.00pr

 

 

Set ring end gaps and assemble piston in cylinder: $37.50ea/$75.00pr