| Author | Message | ||
     Scottorious |
I see on EBR that the 1190 RR is putting 185 RWHP down and think thats amazing. From the engine crank to the ground there must be losses which means is the engine putting out 200 HP at the crank? Thats exactly what i DONT need but sure would like it!!! We are now seeing that Barkers and D-Adams are pulling 15 hp gains from just an exhaust and air filter change without any fuel map adjustment. How high can we go as street riders and keep a streetable, reliable engine? Of coure I would like to see big bore kits and head porting and all the fun parts you can get for tubers available for the 1125 engine. Will we ever see that? I guess maybe when peoples warranty runs out we will hopefully see the envelope get pushed! If tuber guys can get 120 RWHP from those engines I would hope we could get some cool numbers. | ||
| Zac4mac |
I have two weeks of warranty left. EBR ECM will be here Thursday UPS says. pump gas/free flow exhaust/intake, BAS and O2 enabled. Gotta get a baseline at work before the race ECM goes on. Putting on a "take-off" set of tires I picked up cheap tomorrow. Loretta has the airbox stock, K&N, Drummer, M3HUS062 flash. Porting and flowing are already pretty good it seems, raising compression, running better fuel and increased timing will pull HP tho. Zack | ||
| Scottorious |
GREAT. glad to see somebody gettin after it! If porting and flow is pretty good is there any room/need for increase valve size? What about higher lift/longer duration cams? Can the cylinders be bored any? Are the pistons quality or can they be replaced with high quality pieces. I havent ever looked into this engine because I sort of thought Id never get one. Now I got one and gotta get caught up! | ||
| 1_mike |
First - Intake / exhaust ports can always be made a little better. A "proper" seat (head and valve) grind will net more flow all by itself. Next - Yes, raising the compression normally will increase power a few. And last...if it ain't detionating...it "doesn't" need "better" fuel....no matter the comp. ratio. Now if the combination of compression ratio and ignition timing cause detionation...THEN a better fuel is in order. And lastly, yea, working on cam design...eventually...will net more power. There is NO one cam that suits all conditions. Mike | ||
| Zac4mac |
Mike - the ports on the 1125 can be bettered, but only slightly. Not like cleaning up a sand-cast Sportster head that "backyard flowing" gained huge. The 1190 has an extra set of injectors, shower-heads over the intakes. More fuel is always good. Increasing the compression necessitates raising octane. Also I'm sure there is fuel that is more efficient than the stuff I get at the pump. Timing is dialed in to the fuel and ambient conditions, I used to time my Sporty every 2 or 3 tanks to keep her "on the edge". Timing on the 1125 with DDFI-3 has a precision that still staggers me. That's why I ordered a race ECM from EBR. This is a very hot V-twin, I like it a lot. I don't have any plans to go inside to do any hot-rodding. As of yet anyway. I AM interested in what other brave souls are doing in there. Z | ||
| Thefleshrocket |
To add to the above, if it's not detonating, you ought to try advancing the timing and see if that nets any more power. Generally advancing the timing requires more power but increases the chance of detonation, so run the best fuel possible and the most timing advance the motor will take. Of course I haven't personally tried advancing the timing on an 1125R, so I don't know for sure that it will even have a positive effect on power. It's certainly possible (albeit somewhat unlikely) that more timing wouldn't equal more power. (Message edited by thefleshrocket on March 15, 2010) | ||
| Dirty_john |
I have on order the EBR race ecu for pump gas and have also ordered the EBR race ecu for race fuel, I am looking at using the Torco unleaded accelerator with Super unleaded here in the UK to get to a RON of about 105, I think in the USA you measure RON slightly differently to us here in the UK. To get the benefit of using a higher RON I know higher compression would be an advantage but other than fitting a free flowing exhaust and the K&N air filter (when the race ecu arrives) the bike will remain stock, I am hoping that the race ecu for race fuel has revised ignition timing to make use of the higher RON (Message edited by Dirty_john on March 16, 2010) | ||
| Captain_america |
Also when you increase timing, less fuel is require to achieve the same air/fuel ratio. I have no clue how much "room" there would be to increase it if you used premium fuel, but it could make a help the lean situation these bikes seem to have while you make some additional power at the same time... Win, win?  | ||
| Syonyk |
... huh? Also when you increase timing, less fuel is require to achieve the same air/fuel ratio Air/fuel ratio is totally independent of ignition timing... | ||
| D_adams |
http://en.wikipedia.org/wiki/Ignition_timing | ||
| Captain_america |
Yes its independent BUT the amount of fuel it takes to ignite a pre determined air/fuel ratio (doesn't matter what it is) changes with timing advance... Less timing = more fuel More timing = less fuel Trust me, I work with EFI everyday. I can sit in my car and look at fuel consumption and at the same time change the advance 1 degree at time and watch the fuel change as described above. NOTE: why do you think timing is advanced so far when your car is in a cruise situation? I'll tell you one reason is because less fuel is required... (Message edited by Captain_america on March 17, 2010) | ||
| Syonyk |
That's a totally different value from the air/fuel ratio. You're discussing BSFC - and yes, timing has a HUGE impact on that. The timing shouldn't alter the readings on a wideband, though. You're needing more or less air/fuel mix to do the same work, but the ratio of air/fuel shouldn't be altered by timing (all other things remaining equal). And, in general, the further you can advance the timing without detonation, the better power/efficiency you'll get. | ||
| Captain_america |
Correct. Sorry I wasn't sure exactly how to describe it lol. BSFC IS the correct term... thanks. Basically in a Closed Loop EFI system that doesn't monitor timing, if you change it, for a split second or two the air/fuel will change until the ECU corrects for the change in BSFC. My thought was that in open loop WOT the air fuel might richin if the timing was advanced... but I'm sure that the ECU monitors timing and would change the fueling accordingly. CRAP! Never mind...} | ||
| Pittsburgh_guy |
Sorry, maybe I'm missing something but it was my understanding EBR was going to offer a 1190 kit for the 1125R!?! Problem solved. | ||
| Captain_america |
IDK but I'd do it | ||
| Chessm |
you want to be faster...upgrade the software in your brain! take a trackday or three or four! take a racing class. take a dirt bike class. ride a supermoto. ride different types of bikes from your own. read books about riding. ride in different places, and ride new roads. instead of wasting time with your bike in the shop getting stuff done, just go out and ride. all of that will make you infinitely faster than any big bore kit. |
