Cnc Porting!

[dfr rudy]

We know its never fast enough so we wanna help!!!

DFR CNC head porting now available!!

YFZ Central members price $359.99!!

2 weeks turnaround time!!

We have several engine packages available from mild 450's to big bore stroker nitro bad boys!!

Give us a shout or meassage for all the details!!

[quadracer55]

thats sweet, app how much hp will this give?

[dfr sam]

Hey, depending on your components(Pipe, Intake etc....) you can expect 10-20% increase in power with the port job. Stock motor YFZ450s with Dasa exhaust, Pro design intake and cam-mod make 46hp on our dyno.

[climb-101]

do ya have any flow numbers on the different setups. duner, port with +1 valves, ect

[childofjuly]

bumb

[dfr sam]

QUOTE (climb-101 @ Jan 4 2010, 12:59 PM)

do ya have any flow numbers on the different setups. duner, port with +1 valves, ect[/b]

Hey climb-101,

We don't really talk flow numbers there for our reference only.

thx
Sam

[climb-101]

QUOTE (DFR Sam @ Jan 13 2010, 02:02 PM)

Hey climb-101,

We don't really talk flow numbers there for our reference only.

thx
Sam[/b]

How does a customer know the hp potential if there are any numbers. I am building a motor and looking to make around 65 hp out of a 98mm stroker motor. Let me know what you have.

[dfr sam]

The HP numbers are relative to the Dyno. Our 8mil stroker YFZ with a 97mm bore on VP C12 put out just over 60 HP on our Dyno which is known to be 5-7 horse power under others. Our porting with +1 valves.

THX
Sam

[climb-101]

QUOTE (DFR Sam @ Jan 13 2010, 04:14 PM)

The HP numbers are relative to the Dyno. Our 8mil stroker YFZ with a 97mm bore on VP C12 put out just over 60 HP on our Dyno which is known to be 5-7 horse power under others. Our porting with +1 valves.

THX
Sam[/b]

I know that different dynos read differently, this is why I was looking for flow numbers. That way I can see which head will work better. I am looking more to compare head porting to the one I have already. It is a +1 valved head off off an '07 that flows around 270 @ 28". I am looking to make around 65 hp with it but there is always room for improvement. Also what cams do you guys run

[dfr sam]

We like many other motor builders like to keep our flow numbers confidential. Sorry I can not disclose that information. We would run a web cam for your type of build.

[funyun]

Same price for YFZR heads? Is this just a basic port like most compnaies would refer to usually as a recreational port? Does it include a valve job?

[dfr sam]

Hi, the price would be the same. We would port the head according to your needs/wants. The price does not included a valve job.

THX
SAM

[flattrack450]

i dont mean to bash anyone but i cant believe that someone is looking to get work done maybe by some one and wants to know what a typical head will flow and we the customer pay for the service and thats confidential. Thats just crazy?????

[climb-101]

QUOTE (flattrack450 @ Jan 30 2010, 07:37 AM)

i dont mean to bash anyone but i cant believe that someone is looking to get work done maybe by some one and wants to know what a typical head will flow and we the customer pay for the service and thats confidential. Thats just crazy?????[/b]

I agree. All other guys that I have talked to about porting head will tell flow numbers and give me an idea of what the motor should make. I now that dynos differ on there rating but it will give you a ball park number. This is the reason for the flow numbers, if one head flow 250 @ 28" adn one flows 265 @ 28". i want the the better one.

[dfr sam]

QUOTE (flattrack450 @ Jan 30 2010, 07:37 AM)

i dont mean to bash anyone but i cant believe that someone is looking to get work done maybe by some one and wants to know what a typical head will flow and we the customer pay for the service and thats confidential. Thats just crazy?????[/b]

Flattrack450. your feedback is welcomed. It's just our policy to keep those numbers confidential. We base our builds off of real world performance.