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New Rev Tech 100-Inch Engine

Big Inches And Balanced

By Laura with Custom Chrome Images
6/10/2010 3:14:41 PM

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NEW REV TECH 4 BY 4 ENGINE-- The engineers and technicians at RevTechÆ went back to the drawing board to create our next generation 100-inch engine. We studied the latest technology, combined that with expertise gained on the first RevTech, 100 project, and got down to the task at hand. The goal was simple; create the best all-around engine for the American V-Twin market!

Fortunately the RevTech design staff did not have to start from scratch.

We began with a solid foundation, the fire breathing RevTech 110 power plant, and refined it further to produce a motor for most everyone. By shortening the stroke to 4-inches, excellent balance with less vibration was achieved. A positive side-effect of the shorter stroke was reduced piston speed which increases reliability due to lowered stresses.

revtech engine - back - cci


The 4 pistons pushed on these 4 strokes are a special story in themselves. RevTech worked with Wossner to design unique moly-coated forged pistons specifically for our engines. If you're not familiar with Wossner, here's a bit of background: They manufacture pistons for a little company called Porsche, among others!

Next we redesigned the heads. The bigger bore of the new 100 allowed the use of larger valves, so the ports were also redesigned for better flow. Smaller combustion chambers provide greater squish area for better turbulence and efficiency. In addition, roller rockers are employed for better valve train reliability.

Many of the fine features of the RevTech 110 were retained due to their proven success. Pressed-together flywheels and our industry-first monoblock crankcases are still used for excellent reliability. Blind case bolts, machined fin edges, and John Reed design rocker boxes, follow the RevTech tradition of making it work well and look good. Plus loads of horsepower and torque for all types of riding come standard.

So did we reach our goal of the best all-around engine on the market? We think we did and believe you'll agree. Remember, there are millions of American V-Twin motorcycles on the road today; why not make yours perform like one-in-a-million?

revtech engine - cci


Cast from 356-T6 aluminum with wall thickness optimized for maximum strength
Advanced one-piece casting and machining techniques allow for near perfect case half alignment
Blind case bolts for cleaner appearance
Smooth crankcase deck to cylinder base profile for cleaner appearance
7/16-inch cylinder studs proven in drag racing applications

Connecting rods and flywheels forged from 4340 chrome moly steel - the strongest material available for these applications
Larger straight 11/2-inch pressed in crank pin using RevTech's proprietary extreme-duty military-grade steel

Oiling System
The most advanced oil scavenging system produced yet for air-cooled V-twin applications resulting in better reliability and increased horsepower
3:1 ratio oil pump drive gears and high volume oil pump enable significantly increased lubrication and cooling
Piston cooling oil jets for better heat dissipation

4-inch bore with 4-inch stroke for optimum power and reliability
More fin area for increased cooling
Machined fin edges for better appearance
Forged Wossner slipper-skirt pistons with moly coat

New RevTech roller rockers
John Reed design sculpted two-piece rocker boxes.
More fin area for increased cooling.
Machined fin edges for improved appearance.

Mikuni HSR 42 carburetor
Intake manifold matched to the heads for ideal flow efficiency.
Low profile air cleaner designed for high performance while providing improved rider comfort

Self contained solid-state ignition

Andrews EV72 .560-inch lift cam for good performance and easy starting
EPA cam - Andrews 322B4 .525-inch lift

658531 Natural aluminum finish $5,699.00
658530 Black wrinkle finish $5,999.00
658532 Polished finish $6,899.00
658536 EPA certified Natural aluminum $5,699.00
658535 EPA certified Black wrinkle $5,999.00
658537 EPA certified Polished $6,899.00


CUSTOM CHROME'S CATALOG FOR 2005--Don't miss it. It's the biker's bible. Click on the image to run to their site. Hopefully they have the order form up.

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Reader Comments

I have a 2006 custom chopper with a revtech gen 2 100 C I. I have 3200 miles on it and the head has an oil leak. I called CCI to inquire on a head set back on the middle of July and I was told it was back ordered.

It's now the first week in September and the gasket set is still on back order and no idea when it will be in. I lost a lot of good riding on my chopper. good thing I still have my '91 softtail, this summer would have sucked.

John Paisley
york, ME
Wednesday, September 9, 2015
Editor Response Hey, I wish I could help more. Try reaching Joey Jelf at Custom Chrome. In fact, ask him to call me. CCI is tough to reach.

Call Lee Clemens at Departure Bike Works in Richmond, VA. He will get you back on the road.
I bought a 2005 Saxon chopper with a revtech 100 motor with less then 3000 miles and already have problems with the pushrods and lifters. Tried to find parts and had trouble due to the places that sell aftermarket parts don't sell parts for revtech motors.

Need to know which H-D motor is close to the same as the revtech 100 so I can buy PARTS. Tried to email Steve at Revtech with no luck, bad email address. I'm in Afghanistan and the only way to contact anyone is by email. Revtech only has a phone # on it's site.

Fountain, CO
Thursday, June 4, 2015
Editor Response Hey Dan,

I will try to help. RevTech motors are generally reliable, but big inch motors can take a beating. Did you try to contact Custom Chrome? Let me see what I can find out.

Monday, March 16, 2015
Editor Response Reach out to Custom Chrome. They build those engines.
I Recently purchased a 100 inch rev tech. There is no comparison to any other V~Twin. It has Raw Power. After riding many Evo and Shovelhead motors. The 100-inch by far blows them away.

I Recently took a ride on a friend's new bike and was blown away that I thought his Harley's power was no match for my Rev Tech. I actually thought there was something wrong with his new bike, my Rev Tech has power and torch from Hell. She comes alive from jump street.

I'm so impressed with the 100-inch that I'm building another bike and it also will have a Rev Tech motor. I'm wondering why I never purchased this engine a long time ago. The performance is unbelievable. Thank you Rev Tech for the ride of a lifetime. I've never had any issues with my Rev Tech motor. I'm RedBone and I approve this motor..see y'all on the streets...

Lewisburg, OH
Sunday, July 6, 2014
Editor Response From Custom Chrome. We used a Rev Tech motor in our Shrunken FXR. We have never had any issues.
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