Author Topic: Robl Engineering Prototype Intake Completed (Read 91501 times)

troybilt · « **Reply #195 on:** April 27, 2016, 09:57:30 AM »

S&B R0923, AWESOME Filter!! we use this on our TT setups, big bore yfzr intakes, and drag 450r intakes.

http://www.sbfilters.com/products/universal-filters/round-with-flange/universal-filter-165

Skeans1 · « **Reply #196 on:** April 27, 2016, 04:09:37 PM »

Looks good Troy you find any testers lined up?

Tbone07 · « **Reply #197 on:** April 27, 2016, 04:57:18 PM »

Quote from: troybilt;66981

Prototype intake done, ready for testing!

When you say "big bore" for that intake, you big are you talking?

troybilt · « **Reply #198 on:** April 27, 2016, 04:57:58 PM »

Couple of examples of our big filter setup on 450's I posted this morning... you get a sense for the size of the filter.

troybilt · « **Reply #199 on:** April 27, 2016, 04:58:53 PM »

The graph is of the G5 intake, not the TT intake shown, but you get the idea. They are very similar... check out the gains at 10000 rpm...

troybilt · « **Reply #200 on:** April 27, 2016, 05:04:42 PM »

Quote from: Tbone07;67010

When you say "big bore" for that intake, you big are you talking?

Its kind of like the expansion chambers, what works well for the small bores is too small for the big bores and vice versa. This one was designed for the 400+ cc motors. However, the stock intake may be poor enough that the bigger intake still works better. I'll have a smaller version for the 310-363's... Its hard to make one intake fit all the possible combinations of motors/carbs, unless you don't care about performance...

troybilt · « **Reply #201 on:** April 27, 2016, 05:06:27 PM »

Also bare in mind, my 450r intakes are after 2 years of development and dyno testing, the reality of hitting a home run on the first one is slim, but we got to start somewhere.

jwraymond6 · « **Reply #202 on:** April 27, 2016, 05:21:51 PM »

Can't wait for the 310-363 one's

Jerry Hall · « **Reply #203 on:** April 27, 2016, 05:24:40 PM »

Quote from: troybilt;67011

Couple of examples of our big filter setup on 450's I posted this morning... you get a sense for the size of the filter.

When run #2 was made was the seat on or off the bike?

Would you post the A/F curves for runs 2 and 9. It looks like the resonance of the stock intake may have caused the engine to go rich around 9000 RPM.

troybilt · « **Reply #204 on:** April 27, 2016, 05:37:01 PM »

You have to ask Those Dyno Guys, they didn't give me any specifics.

troybilt · « **Reply #205 on:** April 27, 2016, 05:37:55 PM »

They didn't get to tune the G5 intake cause the chain broke from what I understand.

troybilt · « **Reply #206 on:** April 27, 2016, 05:40:41 PM »

The increased intake volume carries the hp longer in the rpms. I can post more curves if you'd like. Racers Edge shows similar curve with G6 and my G3 intakes.

Aceman · « **Reply #207 on:** April 27, 2016, 09:39:52 PM »

Quote from: troybilt;67019

You have to ask Those Dyno Guys, they didn't give me any specifics.

I thought you used your own dyno for your intake testing?

Skeans1 · « **Reply #208 on:** April 27, 2016, 10:05:29 PM »

[MENTION=47]troybilt[/MENTION]

Sent from my SAMSUNG-SM-G890A using Tapatalk

troybilt · « **Reply #209 on:** April 28, 2016, 09:16:27 AM »

Quote from: Aceman;67029

I thought you used your own dyno for your intake testing?

I do but that particular graph was done by a 3rd party. I have my own Dynojet 250i... Anymore its not enough to post curves from your own dyno now everyone wants to see curves from a 3rd party. I actually haven't tested my G5 intake on my dyno... I wasn't expecting that those results. They saw the same or similar results on 3 different bikes.