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Honda 600RR?, Kaw 636? or Yamaha
R6?? Which engine is best for which class??
*A note from Jon Fitzpatrick: Every year, for as long as I can remember, there has been some new model engine coming
out that is supposed to "change everything". 1995 it was the "D" model Kawasaki (every one
I saw-lost, then blew up), then the Gsxr Suzuki, then the F4 (another disappointment), and then all the fuel injected
stuff started showing up- and a lot of guys went backwards-fast. There is always a lot of talk going around about
this new bike model or that. When are people going to figure out that the Japanese OEM's don't make motors for
us? and you won't find the best micro sprint motor in a motorcycle- or in some salvage yard. Take a stock motor,
and hang the best fuel system and pipes on it- (both of which you do need), but you still have a stock street bike motor. In any serious form of
racing, a true race motor is BUILT, period. Put the best new Corvette motor in a sprint car- and you will get smoked! It was
just not built for that application. It is the same with the motorcycle manufacturers. They are mainly interested
in making more top-end, peak power with the trend towards shorter strokes, etc. But we have to have gobs of torque
to pull our race cars off the dirt track's corner. Top-end with no low-end is kind of like a ladder. What good
are extra rungs on the top, if it is missing rungs on the bottom?
This is why we prefer building the '99 to '05 Yamaha R6 motors for the Outlaw/Open classes. These models have a
longer stroke that any of the other 600's and is yet is fully capable of turning 16,000 rpm. The longer stroke
motors have more piston speed which helps combustion, especially with alcohol, allowing a wider powerband which
is essential for a micro sprint racing. We have made the most we've power seen with these modified motors and they
have an impressive reliability record.
Please read on,
Jon
*We have recently been dyno testing the 2006/2007 R6, and did runs with
our best alcohol carbs and exhaust combinations. While the power is quite good for a stock street bike motor, it
was still down from our Level-2 built R6 engines by 8 to 10 horsepower. But this motor is a valid choice for the
stock classes as well as a good alternative for the Pennsylvania area tracks. Particularly with the new rules coming
into effect. There is still quite a bit that can be done to improve power under the new rules. Contact us for details
on motor work, our alky carbs and exhaust systems and ignition options for these.
"AA Multi & Outlaw Classes:"
Yamaha R6: We have had great success with our built
'99-'05 Yamaha R6's for the Multi and Outlaw classes. This is our choice for the best option for this class. After
10 years of success building Hondas, it was going to take a lot to get us to consider something else, but after
we started building the R6's we knew we had gone in the right direction. They just needed some more low and midrange
power to pull them off the corners. As with our Hondas, we start with applying our "airflow magic" to
the head, (and even taken that a step further with the Level2 mods). We have designed special valve train parts
for them also. This allows this motor to rev past 16,000 rpm. (This is 7% more rpm than a stock 636 Kaw.) This
is a clear rpm advantage over other motors, and lets you gear low- and still not "hit the box". Combine
this with our carburetor setup and exhaust system that are all designed to get the most usable power and torque
available. See the R6 Multi/Outlaw
Class page or call in for details and pricing.
*New for 2006:Ask about our Level-2 Portwork and head mods (another
10% more airflow). The Level-2 R6 made over ten hp over our previous best dyno tests. Used by Travis Senter and
Eric Wright to finish 1st & 3rd at the 2006 I-30 Nationals!
We try to have ported, big valve R6 heads and motors in stock....You
need one of these on your motor- regardless of whether you have carbs or injection, or who is doing your motor
assembling work!
2006/07 Yamaha R6, Honda CBR600RR, Kaw 636, GSXR, etc.
We keep an open mind, and will build you whatever you want,
Along with applying our "airflow magic" to the head, we have designed special valve train parts for many
of these as well as other goodies including carburetor conversions and sump modifications. We have built all these
motors with good success. I will add that some of these newer motors have not proven themselves as far as reliability,
or performance for that matter, for near as long as the R6 or F3 and there is some risk factor involved with anything
new, especially when our other, "proven" motors are more than capable of winning. But, of course, it
is your
call. We have dyno'ed and tuned most all these motors and know "Whatzup". Call us for specific recommendations
on the best motor for your track.
Which ever motor you decide to go with, you can trust FTZ to build you the fastest, most reliable motor
possible and at a reasonable cost. These recommendations are proven packages. Don't be a victim to other builder's
desperate attempts to make power and keep up. (Often experimenting at the customers expense.) Remember that the
pursuit of perfection is never cheap. Value comes with performance, reliability, and resale value.
Stock Motor Classes:
Yamaha R6 + FTZ = A winning combination! Remember we have developed our 600 exhaust system and alcohol carburetor mods
for this model, easily surpassing all others that we tested. The FTZ carbs and the current pipe make awesome, smooth
power from bottom to top.
600 "A" Class & "Wingless"(stock
motor class)-
See the note about the 2006/07 R6 above- One of the secrets to a winning "stock" class motor is to have
a perfect "rebuild". We can minimize compression losses through the rings and valve seats with our special
procedures used during a rebuild. **With so many different tracks running their own set of rules, we often will
have you fax or email us a copy of the engine rules so we can make the most out of them when rebuilding your motor.
You need to get both the pipes and the carb work to get the full power.
See the "600 "A"
class & Restrictor class motor work" page.
600 "Restrictor" Class- We recommend the '99-'02 Yamaha R6 for any Restrictor class car. This well
proven package has very good power and a nice flat power band-meaning good smooth power from low-end to, with no
sudden "hit" to upset the car or driver. Use our new FTZ exhaust as others will upset the carbs and limit
torque and rpms. Eric Edwards used this setup to dominate the 2005 NMMA Championship and the NMMA Nationals in
Oklahoma winning 30 features.
Also see the "600 "A"
class & Restrictor class motor work" page.
"Pennsylvania Area" 600 Racers- We are now recommending the 2006/07 Yamaha R6 for the Northeastern tracks,
as an alternative to the expensive and fragile 636 Kawasaki's. This motor will rev farther and hold up better than
the Kawasaki's. Following the new PA rules, we have several legal power and reliability modifications allowed as
well as installing a race clutch and some other useful mods. We have a killer Flatslide carburetor conversion for
them as well and ignition mods as well.
And if you choose to go with the Kawasaki 636, be sure to run our exhaust system and keep in mind we offer a awesome
carburetor conversion for those are tired of chasing the electronic fuel injection around in circles. Give us a
call for the latest.
Call for the latest details or see the "600cc
Pennsylvania area motor work" page.
Winter '06: Jimmy Brookens won a dozen or so features last year
using our exhaust, and our alcohol modified R6 carburetors on his previously injected Kawasaki 636. Please call
in for what we can offer you to get the most out of your motor per your track's rules.
*Carbs or Injection?? Which is Best?
All of the big races won by our guys, last year and this, were with our carburetors. Don't spend more for less.
There is better places to put the money. For more on this see the "Carbs or Fuel Injection" page.
If you are not using a FTZ motor- You
are not as fast as you could be!!
We can arrange a truck line to pick up a motor at
your place, for "no hassle" shipping to us.
2008 Prices:
*FTZ 4/2/1-600 Exhaust with Stainless Steel Muffler, for Honda F2/F3, F4, RR Yam.R6, Kaw 636 and Gsxr Suzuki.............$460
Exhaust w/ Ceramic coating.............$595
*600 Alcohol stock carb Modifications- Our exclusive setup using the air correction system. with full instructions...................$250
*R6 Engines, Heads and "Car Kits"- call for prices and availability.
FTZ Performance, Inc. 573-334-5439 9:00
to 6:00 Central time
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