At Powerhouse Performance Machine, all cylinders are bored on a "true centerline" fixture. This ensures cylinder bores are machined geometrically correct to the crankshaft centerline.
Please note: PPM will not bore any block without having pistons. If you are not sure what kind of piston you need, we will be glad to make recommendations based on your application.
HONING
After precision boring, blocks are then fixtured in the same manner as the boring fixture for honing. All blocks utilize a "torque plate" to ensure cylinder concentricity. Torque plates simulate cylinder head installation which can distort cylinder bores. The use of the plates ensure straight/round cylinders after heads are installed. PPM can also finish bore to any RA finish. Check with your ring manufacturer for their recommendations.
CYLINDER HEAD WORK
All cylinder heads are cleaned, pressure tested, and inspected before any machining is done. Once the inspection of the cylinder head is complete, the machining process is started. Since everything must work from the valve guide. That is the first order if business. Resizing - replacing or installing a bronze liner is first. Once finish fit is done, the seat and combustion chamber and bowl machining can begin. From standard three-angle valve jobs to more extensive bowl profiling five-angle seats, our state of the art CNC head center ensures the heads will be of the highest quality, best concentricity valve seats in the industry. Once the machining process is done to the seat, bowl, and combustion area, the cylinder head will be surfaced. Only CBN (iron) or PFD (aluminum) cutters are used to achieve a perfectly flat smooth finish. Full service port/polish and flow bench service is available. Contact us for pricing and recommendations.
BALANCING 
Multi-Balancer 5000
PPM has made the investment in a new CWT balancing system. It is the latest in precision balancing with custom printouts. With this system you can be sure your rotating assembly will be perfect and to prove it you will be given a before-and-after printout of your crank, rods, pistons, rings, and bearings for your records (see sample printout below).
At PPM we can also balance your camshaft(s); very few shops can do this. The increased performance in your valve train from a balanced camshaft is well worth the minor cost for this service!
CONNECTING ROD RE-CONDITIONING
All rods are thoroughly cleaned, magnafluxed stress relieved, shot peened, resized , and rebushed with new bolts. Finish balanced is the final service before assembly.
ALIGN HONING
When blocks are used they experience heat cycles and stress. This tends to distort main bearing bores. Align honing is the process used to fix this problem. The align honing process involves grinding main caps and then re-honing main bearing bores to a specific tolerance. This process provides a truly straight bore for the crankshaft to rotate in.
PPM also offers align boring services. This process is primarily used when main caps are replaced or a "splayed" type cap is used.
FINISH CLEANING
All blocks are finished cleaned using a high pressure, hot water, solvent mixture which removes all honing grit, metal shavings, and other debris from all oil galleries, nooks and crannies that can ruin your engine quickly. This process is the only way to properly clean cylinder bores after honing.
CRANKSHAFT GRINDING
At PPM all the crankshafts are put through an extensive process. First they are cleaned and magnafluxed. Once determined to be good, they are shot peened, stress relieved, resized, micropolished, and all oil holes are chamfered. PPM also offers lightening, knife edging, and oil shedding coatings.
COATINGS
Our proprietary coatings are the only way to go if you want the best in bearing and piston protection. Our oil shedding coatings are excellent for eliminating oil splash and adhesions on rotating parts. Horsepower gains and cooler oil temps are significant when this is done.
