Email accounts (Please type in detailed subjects lines)

For Media questions
MEDIA@HefleyTec.com

For office supplies & Equipment
Office@HefleyX3.com

For Engineering/Prototyping
ADM@HefleyX3.com

For Executive business Only
CDH@HefleyEngine.com

General Questions and all others
Mail@HefleyEngine.com


Contact Info.

Hefley Engine Co., Inc.
Suite 477
5348 Vegas Drive
Las Vegas, NV 89108

Office Numbers : 800 598 7510,
                           212 313-9552

Fax/Voicemail : 702 664 0575
Accounting : 702 544 0292

Email : Staff@Hefleyengine.com
Tell us what you think about our web site, our service, or anything else that comes to mind. We welcome all of your comments and suggestions.

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This Hefley X2 has all the features as the X1 but it also will adjust to a wide variety of fuels. It has adjustable compression ratio built in.

It can run on regular or high test gas, E85 ethanol, diesel, bio-diesel and other fuels still under development.

All was top secret

For years we have been determined to make a completely new and  highly efficient engine. We new made designs, analyzed, made models, prototypes. There has been no news from us because we were never completely satisfied.

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