LONG RACING ENGINES

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Long Racing Engines grinds all cranks in house to ensure quality and accuracy.  All cranks are treated as if they are racing cranks.  We maintain the most precise tolerances and oil clearances.  These clearances can be customized to specific applications.  Each crank is micro-polished after it is turned to ensure the best possible surface finish.  These type of clearances can only be repeated using top of the line, well maintained equipment.

This means that the grinding stone is kept sharp and the correct radius is put back into both the rod and main journals.  Many crank grinders will square cut the journals which renders the shaft unsuitable for racing or high horsepower street applications.  A crankshaft turned to .010, .020, or .030 is not much weaker, in any at all, than a standard crankshaft.  Under a large load, a square cut crank will break, causing major engine damage. 

L.R.E. recommends that you not use a welded crankshaft.  Even when ground correctly, welded cranks stand a good chance of breaking under the extreme stress of racing.  If a good radius can be put back into the crank, it is much better to turn the crank to the next undersize than it is to have one welded and turned back to the original size.  A racing engine is a huge investment, not using a new or well machined crank could cause thousands of dollars in damages or even a total engine loss.

Long Racing Engines also offers computer balancing.  Each piston is matched to within 1/2 gram and both ends of the rods are done the same.  This makes the rods match within 1 gram total weight.  The crank is then balanced to within 1 gram of the rotating assembly weight.  There are very few shops that take the time to balance a motor this close.  Doing so allows more forgiveness if one component breaks and must be replaced.  A well balanced engine is also much easier on engine bearings and internal components.  Our balance jobs start at $225.00 for a 4340 steel crank.  Excessive weight removal and/or adding heavy metal incurs additional costs.  You simply will not find a better balance job for the money.

We use a wet magniflux to check cranks for cracks.  This is the most accurate method available.  We are also capable of cutting blower keyways, crankshaft straightening, "knife edging", chamfering oil holes, and cross drilling*.  Call today for questions and pricing.

*Long Racing Engines recommends not using a cross drilled crank in applications where RPM's exceed 8000.  Bearing problems may occur. 

Copyright © 2006 Long Racing Engines.