R & R Automotive Engineering is pleased to announce the availability of the full range of machining services for the latest Volkswagen VR6 blocks and heads. We are equipped to do precisiontorque plate boring and honing of the VR6 block, in addition to complete crankshaft and connecting rod service. We provide a full line of gaskets, bolt-on parts, and enhancements for these increasingly popular power plants.
R & R Automotive Engineering machinists use the Sunnen CH-100 Line Honing machine to assure that the crank journals are cut to the specified size and are parallel from end to end. Camshaft tunnels can be trued as well. Every dimension of an engine is calculated through measurements based on the centerline of the crankshaft. The building- block for all succeeding operations depends on the line hone. The CH-100 ensures correct adherence to this critical dimension.
Blocks that require over-boring of the cylinders are moved to this machine from the Line Hone for the initial boring process. Ask our counter personnel about sonic measurement of cylinder wall thickness before boring. Our assemblers typically prefer to work with a seasoned block that has been sonic tested before boring.
The Sunnen DCM Machine is capable of producing the deck finishes required for today’s high-tech multi-layer-steel head gaskets. In addition, our ultra-accurate fixtures and measuring equipment will ensure that the deck surfaces are absolutely parallel to the crankshaft/camshaft centerlines. Evenly balanced compression from cylinder to cylinder and absolutely true sealing surfaces will make your engine run smoother, produce more power, and last longer.
After a block has been bored and decked it is ready for the fine, finishing touches of the Cylinder King hone. For the best results we recommend the use of one of our application-specific BHJ torque plates in conjunction with the CV-616. R & R’s operator brings years of experience with block metallurgy, ring face configurations, and a range of honing media to bear on the critical task of bringing every cylinder into the precise configuration specified. Worries about ring sealing are a thing of the past when the preceding steps are followed and the block is honed to specification on the CV-616.
Valve guide and seat replacement are accomplished quickly and accurately with this precision equipment. Under the watchful eye of our experienced technicians, guides are sized accurately and seats are cut to precise depths. The finished product will provide evenly-sized combustion chambers with consistent stem lengths and installed heights across the head to facilitate simpler assembly. Custom head-porting services are available. Inquire at the counter for a quote.
A great valve seat is only half of the cylinder head equation. The valve itself must be faced and precisely matched in length to the rest of the set. The VR-7000 utilizes advanced centerless grinding technologies to ensure concentricity. Custom back-cuts are available.
The perfect complement to a true, square short block is an equally true and precisely milled head. Some shops deck their heads and blocks on the same machine but R & R dedicates the HBS-1300 to cylinder head preparation. Gasket sealing, at the deck, intake, and exhaust surfaces are dependent on the quality of the machine and its experienced operator, working together.
When all the parts have been suitably massaged in our machine shop, the final step before assembly is electronic balancing on the DCB-750. We strongly recommend the balancing of every engine assembly we prepare. Longer bearing life and smooth operation are the tangible benefits but there’s a lot to be said for the peace of mind provided by a fully balanced rotating assembly. The Sunnen DCB-750 is a state-of-the-art machine that will bring tolerances to the final gram of accuracy.
Whether we assemble your engine or you pick up the components to tackle the job at home, working with thoroughly cleaned parts contributes to a better end product. Many of our builds begin with reclaimed engine cores, after years of experience, we have found that the TCS-2332 can produce metal finishes that are even better to work with than fresh-from-the-foundry parts. Our assemblers are extremely conscientious about cleanliness in their environment. A block or pair of heads that have been through our machines are completely free of slag, dirt, and rust, all enemies of long engine life. Many customers bring items as large as rear-end housings for processing in our cleaning room.
Experienced engine builders know that taking some time for assessing the quality of all the parts prior to beginning expensive machine work is a wise expenditure. For that reason, R & R provides several pre-machining services to its customers at a reasonable cost.
Aluminum heads cannot be tested using the magnaflux process yet aluminum heads are frequently found to be unusable due to cracking and warping that occur as the result of overheating or even normal use. R & R uses the Sunnen Pressure Tester to screen aluminum heads before expensive work begins. This is low-cost insurance against bigger problems down the road.
Modern casting techniques have saved weight and returned dividends to the automotive OEM market. Unfortunately, those same practices have resulted in the need to use Sonic Testing of cylinder wall thickness. This amazing technology allows the technician to “see” through cast iron, steel, and aluminum and accurately determine the thickness of cylinder walls. Investing a modest amount of money in this valuable process can help you avoid sinking a sizeable amount of cash in machine work on an unusable part.
R & R has developed a network of core parts providers to assist customers in locating the right parts at the right price. We have been able to ease the challenge of locating matching numbered components for clients of our restoration service. Other customers are deeply invested in hard-to-find combinations and, for a minimal fee, we have been able to produce the right cores on short notice.
 2.png)
R & R Automotive Engineering is pleased to announce the availability of the full range of ma
chining services for the latest Volkswagen VR6 blocks and heads. We are equipped to do precisiontorque plate boring and honing of the VR6 block, in addition to complete crankshaft and connecting rod service. We provide a full line of gaskets, bolt-on parts, and enhancements for these increasingly popular power plants. 
