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Personal Service
Quality work
Cylinder Head Work
Specialist in American engines, particularly 50s - 70s V8s
Complete Engines restored or custom built
Balance and Blueprint restoration of American V8 engines including Muscle cars and Corvette.
Custom built Blown SB and BB Chevy or injected alcohol SB and BB Chevy
Mechanical Fuel Injection Setup & Flow Testing
Nitrous Oxide Systems Setup & Flow Testing
Computerized Engine Balancing
Certified Dynamic Balancing
Racing and Industrial work accepted
2 piece driveshaft
Overhung impeller
Computerized
Valve and Clutch Spring Measurement and Analysis
Utilizing Performance Trends Valve Spring Analyzer Equipment
Reports include:
Spring Rate
Force at Seated Spring Height, open height and all points in between
Height for a user defined spring force
Bind Height
Bind Height Clearance (between Open Height and Bind Height)
Linearity (non-linearity)
Damping
Software Analysis
Of your engine and/or vehicle
Utilizing Performance Trends Engine Analyzer Pro and Drag Racing Pro
TIG (Heliarc) Welding
Automotive related specialists but conventional work is welcome.
Repair or modify aluminum and steel components such as blocks,
heads, transmission cases, rear ends etc. Some cast iron is possible.
Related Muscle Car 4 speed transmission specialty repairs
(Muncie, Borg Warner)
Aluminum Transmissions: cluster hole sleeving, side cover sleeving,
tailshaft seal sleeving, proper crack repair, mounting ear repair,
threaded hole repair, surfaces machined, etc.
(Note: We do not rebuild or have parts for the whole transmission.)
Lincoln Square Wave
300 Amp Tig
Head welding repair (aluminum)
Heads resurfaced, milled
Heads angle milled
Intake and exhaust surfaces milled
Heads crack tested
Broken bolt removal
Valve jobs
OEM / Restoration 3 angle
Racing multi or radius angle
Complete Race prep/blueprinted
CC measure chambers or ports
Valve guides replaced and diamond honed/sized
Valve guides custom made
Valve seats replaced
Valve springs digitally measured
Heads o-ringed
Port matching
Port work
Bowl work
Header plate adapters port matched
Connecting Rods
Rod Center to Center Correction and Boring
Rod checked for bend and twist
Rod Big End Resizing
Rod Crack Detection
Rod I beam profiling
Rod reduce width, big or small end
Rod Modify for small end bushing
Rod Custom Bushings
Rod Bore or hone for press fit or clearance
Rod Balancing
Pistons
Piston Valve relief Flycutting
Piston Dome reductions
Pistons mounted to rods (float or press fit)
Pistons pin clearance honing
Piston balancing
Have a unique balance application? Please call us.
Dynamic balancing of crankshafts and engine rotating assemblies.
Passenger size engines: Pistons are balanced to +0.5 / -.00 grams
Rods are balanced to +0.5 / - 0.00 grams on each end.
Even tighter tolerances are possible if you desire.
Cemb Equipment
2.5 to 1000 lb capacity
10 ft length
0.008 grams accuracy
1, 2, & 3 plane features
Years of experience with Racing and OEM engines as well as industrial objects.
573 V8 Case Tractor
Dyno Coupler
All Text and images on this website are copyrighted by David Koehler 2000 and beyond
All sales are final. Items and services provided by Koehler Injection are intended for off road use only.
No responsibility whatsoever will be accepted by Koehler Injection for any damage, injury or loss resulting from their use.
Urbana IL, USA 217 469 7663 M-F 9 - 5 CST
Postal Money Order
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Serving the Midwest and the world. Engine balancing, balancing service - industrial balancing, automobile machine shop service, welding, machine shops, welding-industrial, in Champaign, Urbana, Danville, Peoria, Bloomington, Kankakee, Tuscola, Mattoon, Charleston, Rantoul, Springfield, Effingham, Crawfordsville, Indianapolis, Paxton, St. Louis, Cordova, Chicago, Terre Haute, IL, IN, MO, WI, KY, TN, IA, MI
Flywheels & Flexplates matched or modified for internal & external applications.
Over balance, under balance, no hole balance procedures on request.
Crankshafts, Camshafts, drive shafts including Remco.
Axles, fans, rotors, drums, Industrial items, heavy metal installation.
1 cyls. on up, including tractors and odd ball items.
Crankshafts
Cranks machined for double blower keys
Crank stroke measuring
Cranks crack checked
Crankshaft balancing
Crankshaft counterweight reduction
Crankshaft heavy metal installation
Camshafts
Camshaft balancing
Cams degreed
Cam Bearing installation
Flywheels
Flywheel balancing
Flywheel match balancing
Flywheel zero balancing
Flywheel external balancing
Intake Manifolds
Intake port matching
Intake milling, surfacing
Intake plenum modifications
Intake Welding, repair, aluminum
Small Engine
Valve jobs
Resurfacing / Milling
Balancing
Computerized, Dynamic balancing of racing, small engine, tractor, truck, industrial, atv, motorcycle,
marine, snowmobile, antique engines, drive lines, driveshaft, cranks, crankshafts, cam, camshaft,
fans, impellors, pulleys, flywheel, flexplate, wheels, gears, sprockets, clutches, harmonic balancers,
armatures, shafts, drums, brake rotors, brake drums, paper rolls, augers, 1 cyl Kohler, 1 cyl Briggs,
IH V800, remco, Duramax, Harley, Model A, Model T, CAT 3208.
Specific Services
Don't see it? Don't know what to call it? Have something odd? Give us a call.
Urbana IL, USA
217 469 7663
M-F 9 - 5 CST
Many Photos may be enlarged
by clicking on them.
Postal Money Order
Nitrous Oxide
Fuel Injection
Sun Distributor
Tester Drive
Racing, Restoration, Performance, Street Rod, antique, marine