As many of you know Fuel Moto has been working on putting together our cylinder head program which we have now launched for late model twin cam motor. In this thread we will post info, dyno charts, and R&D which was based on our 107" big bore kit . We developed two different cylinder heads that work very well for their given application.

We started with a baseline test with a 2010 Touring with the following components:
FM 107 kit, Wood TW-555 cams, Jackpot 2/1/2 head pipe, Jackpot mufflers and it was tuned with Dynojet Power Vision. This bike makes what we would consider average numbers for this setup, not the lowest-not the highest-but right in line with the many, many 107's we have built and tuned.

Chart below references our baseline with the stock cylinder heads




The first head is what we call the Fuel Moto Level A head. This is our basic cylinder head which was developed as an entry level yet high quality, value based head and includes the following:
complete disassembly, inspection, and cleaning of cylinder heads
Street porting with an emphasis on low end torque and throttle response
CC combustion chamber to desired spec
Serdi full radius valve job
Stock Valves and Springs are inspected, tested, and retained
Machine/Install compression releases if required (+$100.00)
2-5 day turnaround on customer supplied heads

We were able to maintain excellent torque and pick up nearly 5 HP with the Level A head. You can also expect cooler running as well.

Here is a dyno chart of the Level A head, tested on the same day as our baseline




Our second head and sure to be our most popular is the Fuel Moto Level B cylinder head. This objective of this head was to maximize all around performance based on cams up to .590 lift offering a great combination of low end torque as well as upper RPM power. This head features the following:
Complete disassembly, inspection, and cleaning of cylinder heads
Extensive porting, texturing, and blending with an emphasis on best all around performance
Exhaust port and and combustion chamber are fully polished to mirror like finish
Oversize Stainless 1.900" Intake 1.610" Exhaust valves
Serdi full radius valve job
Extreme duty beehive style valve springs up to .600 lift
CC combustion chamber to desired spec
Machine/Install compression releases if required (+$100.00)
2-5 day turnaround on customer supplied heads

These heads made excellent overall numbers with big gains in Hp and Tq thru out the entire RPM range. We also used a Fuel Moto ported throttle body which cleans up the manifold and runner and gave it a full tune with Dynojet Power Vision.

Reference chart below for Fuel Moto Level B cylinder heads




Below is a comparison of the baseline run with the stock heads to the Fuel Moto Level B heads (note these runs were not performed on the same day)




More to come......

 

Would you recomend your b head 107 combo on a stock bottom end with 90 k on it? Probably not but better than typing subscribe!

 

Ok Jamie, now you have the numbers I've been looking for, depending on the cost, I think you finally got me hooked. I will be following this thread closely.

 

I've been checking your site every few days since you told me about the head package. This is looking nice. I'll be getting in touch soon to reserve that garage bay for my upgrade!

 

With 90,000 miles on the odometer I would recommend a thorough refreshening before performing any performance modifications

 

There is more info and pricing on our website at www.fuelmotousa.com/heads.htm


To set something up just give us a call

 

Those are fantastic results! You guys are going to be busy!!!

 

oooppppssss!

 

Hmmmm,

Is another trip to little chute in my future? Hmmmm.

 

Jamie

In your opinion is the stock bottom end and running gear up to a 107 with the stage 2 heads?
If not what mods would be needed?

Thanks