"The best you've ridden is the best you know." - Paul Thede

RACE TECH ENGINES

Power, Powerband, Longevity

  

Building a reliable, "World Class" engine requires a combination of state-of-the-art equipment and experienced, knowledgable technicians.  Race Tech provides quality, precision engine services using the best equipment and processes in the industry.

The staff at Race Tech has over 65 years of championship-winning engine building and tuning experience formally educated by the world's most renowned engineers.  


W
e provide precision services for ALL engine builders and tuners.


Please do not send in a complete engine. Components only (i.e. head, cylinder, crank).

 

ENGINE SERVICES PRICING see PRODUCT SEARCH

 

ENGINE SERVICE REQUEST FORM

 

RACE TECH POWER PLAN™

 

Developing the best combination of porting, cam timing, mapping, and related components to build "World Class" engines is a painstaking process. Race Tech has spent an impressive number of hours doing R&D on the Flow Bench, Dyno, Rottler EM69P CNC, and at the Track.

If you follow the RT Power Plan™ and assemble the engine correctly you can build an engine capable of competing with anything in the world.

The RT Power Plan includes recommendations for:

4-Stroke Engines

  5-Angle Radius Valve Job
  Full Porting (with possible addition of Epoxy)
  Cam and/or Cam Timing Changes
  Piston
  Valves or Valve Mod
  Valve Seats (often for performance, sometimes for reliability)
  Valve Guides (if there is an issue with stock)
  Valve Springs
  ECU
  RT ECU Mapping (for Race Gas and Pump Gas)
  Exhaust Pipe
  Also listed are specific concerns for that particular model.

  If something is not included in the RT Power Plan we are recommending stock.

2-Stroke Engines

  Porting
  Head Mod
  Piston
  Exhaust Pipe

To view the Race Tech Power Plan do a Product Search and scroll all the way to the Engine Section at the bottom.

 

Engine modifications are for RACING ONLY! Not for highway (DOT) use.

 

CNC HEAD PORTING

Race Tech has a Rottler EM69P 5-Axis CNC Porting machine to provide the most accurate, consistent, precision porting available.

 

ATTENTION TUNERS - Confidential Port Digitizing Available

Tuners can have their head designs digitized and ported on the RT Rottler CNC. We keep your port designs completely private and provide a Non-Disclosure Agreement. You can take advantage of precise, repeatable, CNC porting without worry.

 

Head porting is for RACING ONLY! Not for highway (DOT) use.

VALVE and SEAT SERVICES

3-Angle vs 5-Angle Valve Job

With years of using nearly every valve cutting tool available, Race Tech selected the Rottler SG7 as the best machine for high quality, precision valve jobs.

A precision Valve Job is the core of a high-output, reliable motor. Race Tech uses a Rottler SG7 to provide a dependable, accurate, highest quality valve job. 

Concentricity - It is common for stock heads to have .003" to .005" runout. RT Valve Jobs have guaranteed concentricity of less than .001" and a vacuum test of better than 1%. This alignment accuracy reduces valve bounce and reaps huge benefits in longevity of valves, seats, and guides.

We include a spec sheet with every valve job.

 

 - Standard 3-Angle Valve Job

A Standard 3-Angle Valve Job maintains factory designed flow and horsepower.

 

 - Hi-Performance 5-Angle Radius Valve Job

A RT Hi-Performance 5-Angle Radius Valve Job adds horsepower without sacrificing reliability. The area around the valve seat is the most critical area of a port. A 5-Angle Radius Valve Job creates the best flow possible by adding additonal angles and a radius. This increases air speed and flow over a 3-Angle Valve Job.

RELIABILITY - The Top Tuners in the world all know a 5-Angle Radius Valve Job has superior flow while providing the same reliability as a 3-Angle Valve Job (the seat width is exactly the same.)

 

 - Valve Seat Installation

Race Tech can precisely remove and replace valve seats.

Sometimes even brand new stock seats need to be replaced. If the stock seats are poor they are replaced for reliability. Sometimes seats are replaced for better flow caracteristics and power.

 

 - Valve Guide Installation

New valve guides are installed and precision honed to the correct tolerance. When guides are replaced, a valve job must be performed to ensure proper valve alignment. These two steps create valve to seat concentricity better than .001". 

On certain models brand new stock guides are replaced if there is a known reliability issue.

 

 - Valve Refacing

With our valve refacer, we can create backcut angles to further improve flow on many Titanium Valves. Steel valves can often be resurfaced.
 

CYLINDER and HEAD SERVICES

Engine modification is for RACING ONLY! Not for highway (DOT) use.

4-Strokes

Race Tech's head porting provides an increase in flow and velocity to gain both powerband and peak horsepower.  Race Tech porting is tested and developed using a combination of flow bench and dyno data. A 5-Angle Radius Valve Job is required for porting.

 - Race Tech Pocket Porting

Race Tech's innovative Pocket Porting™ provides 75% of the flow and velocity gains available while maintaining a great price point. If you look at the two graphics at the left what it is showing is the importance of the four sections of the port. Notice that 40% fo the gains possible are very close to the valve seat opening. A whopping 75% of the total potential is covered only slightly further down the port (40% plus 35%). By focusing on these areas we can provide the best bang-for-the-buck.

 

 - Hi-Performance Full Porting

Full Porting increase flow and velocity for max efficiency (from flow bench data).  This option is available when cost is no object and you are looking for the best available.  Includes modifying the combustion chamber.

 

 - Hi-Performance Full Porting with EPOXY

Certain models benefit greatly by actually making the port tunnels smaller. This increases velocity and low and mid-range power without sacraficing top-end. This modification creates the best power AND powerband. (Not required on all models.)

 

 

 - Head Decking

Head Decking can be done as a hi-performance upgrade or to repair a damaged head surface.  Race Tech machines the surface flat to less than .0005".  For hi-performance, head decking is used to tighten squish clearance and raise compression.  

 

 - Cylinder Decking

Cylinder Decking is available to repair a damaged cylinder surface or as a hi-performance upgrade.  Race Tech uses a lathe with precision expanding mandrels and digital readout to maintain extremely tight tolerances.  The surface of the cylinder becomes flat to less than .0005".  Machining to raise the compression ratio is also available.

 

 - 4-Stroke Cylinder Head Rebuild

This service includes disassembly, reassembly and setting valve clearances.  When complete you have a ready-to-run head.

 

 - Cylinder Boring

Race Tech uses a motorcycle specific boring bar to bore 2 or 4 stroke steel sleeved cylinders.

DYNO

Race Tech uses a high-end Land and Sea chassis dyno equipped with a braking unit and AFR (air fuel ratio) measurement.

The braking unit provides steady-state dyno testing at all throttle positions and RPMs to produce precise mapping and jetting.

The Race Tech Dyno can run up to 500 hp and is able to measure anything from motorcycles to UTVs up to 50 inches wide.  

Race Tech has a mobile dyno unit available for trackside tuning and on-site runs at events.

CONFIDENTIALITY - We can dyno your bike and provide data sheets with complete confidentiality.

SUNNEN PRECISION RIGID HONE

 

 - Precision Rigid Cylinder Honing

Precision Rigid Honing is a critical yet often overlooked and misunderstood component for producing reliable, repeatable horsepower.

Race Tech uses a Sunnen Precision Rigid Hone to provide a diamond finish using special stones for nikasil (these stones are critical).

Precision Rigid Honing is an essential process EVERY TIME a piston ring is replaced. This is true for all cylinder materials but especially true for chrome and nikasil bores.

DO NOT USE BALL HONES! A precision rigid hone is typically good for 1 to 1.5 HP over a ball hone on a 250F!
 
Some brand new cylinders (like YZ250Fs) have cylinders that are often out of round by over a half thousandths of an inch. This causes smoking and loss of power. These cylinders should be rigid honed before use.
 
 
 
 - Valve Guide Honing
 
When a new valve guide is installed it must be honed to correct tolerance. Honing the valve guide is another often overlooked, yet critical piece of building a high performance engine.  

SODA BLASTING and ULTRASONIC CLEANING

 

 - Soda Blasting

Race Tech uses an ABS Products Soda Blaster to produce a like-new finish to decarbon and clean engine components.  We use a Soda Blaster instead of a bead blaster because it prevents the possibility of leaving abrassive material (glass/sand/egg shells) behind that can damage an engine.  The Soda Blaster cleans using non-abrasive baking soda at extremely high pressures.

 

 - UltraSonic Cleaner

The Pro UltraSonic uses high frequency waves with a special cleaning solution specifically for engines to provide a like-new finish.

The little things count!

FLOW BENCH

 

Race Tech has a custom built, computerized, state-of-the-art Flow Bench capable of flowing 28 inches at 600 CFM (yeah... those are big numbers - don't stand too close).  It is an essential part of the R&D process developing the RT Power Plan.

Utilizing a pitot tube and Port Flow Analyzer Pro Software with fully digital air flow measurement, RT can provide flow graphing, as well as port velocity mapping.

RT also does Wet Flow Analysis.

CONFIDENTIALITY - we can flow test your head and provide you data sheets with complete confidentiality.

 

CRANK REBUILDING and TRUING

 

 

Using a special assembly jig Race Tech replaces the connecting rod, pin, and bearing; then trues the crank assembly to a run-out of less than .001".  Includes spec sheet.

VORTEX IGNITIONS and RACE TECH CUSTOM MAPPING

 

 

Race Tech offers Vortex ECUs and Custom Mapping Services. 

We stock Vortex Ignitions for many models with the standard base map installed.

RT has developed maps for many stock models that outperform the standard base map.

RT has developed maps for our RT Power Plans.

RT has developed maps for many other modified component packages.

Race Tech can develop a custom map for your specific engine package.

 

Vortex ECUs are for RACING ONLY! Not for highway (DOT) use.

CP PISTONS

 

 

After years of experience and testing, CP has become the trusted piston supplier for Race Tech Engine Services.  CP Pistons have proven to be durable and reliable with excellent performance. 

Race Tech recommends and sells CP Pistons. We keep many models in stock.

FMF EXHAUST PIPES

 

 

Race Tech has done a lot of research and recommends FMF Pipes.

FMF Pipes can be obtained directly through Race Tech.

CUSTOMER SERVICE - ENGINES

 

At Race Tech you have options:

  1. Send your Engine Components in for Hi-Perfomance Machining
  2. Have your Motorcycle Dyno Tuned & Fuel Mapped
  3. Call Race Tech to order components or with questions: 951.279.6655 
  4. Many Race Tech Centers can do high quality engine assembly. (We do not build complete engines at RT)

Our customers' satisfaction is vital. We put it in writing.  ►Read More!

RACE TECH ENGINE SERVICE CENTERS

Race Tech specializes in providing precision engine machining and R&D services but we do not build complete engines.  If you're looking for a trusted source to build your engine, the following Race Tech Engine Service Centers exclusively use RT for their machining services.

 

RACE TECH ENGINE SERVICE CENTERS

CROW PERFORMANCE - VISTA, CA - crowperformance@gmail.com - 760.295.3303

SKASE MX - QUEEN CREEK, AZ - skasemx@gmail.com - 602.501.5907

 

 

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