| Author | Message | ||
     Kdogshirow |
Glad you are catching all these problems early Ericz . I don't think my heart could take another catastrophic failure with all the beautiful work you have done (lol)  | ||
| Kdogshirow |
Ourdee....that is really funny , and really sums up what all of us watching this thread feel , lol  | ||
| Ericz |
My website, streetfighterperformance.com, is updated with most of the current info and pics. Still waiting on my buddy to finish the video which should be tomorrow or Wed. Let me know if anyone has any suggestions for my site. Always looking for ways to improve it! | ||
| Battyone |
Interesting reading Eric,Gonna try a turbo 1125 over the winter... and a rotrex supercharger. Hoping to be able to swap the baro sensor out for a 2bar version and rewrite the table. Also got the standard fuel pressure set up to get past too...it's deadhead 4bar and up. Any tips for turboing a twin greatly appreciated,the few people who I know that have tried have always had problems with on-off power delivery. Mines for drag racing,so don't need pleasant manners, just lots of power! | ||
| Ericz |
Sounds like a fun build, Nigel! I'll pm you my email so we can chat in more detail about your project. I hope I can help! Here is the short video my friend put together. There will be more videos to come as I get time. Hope you guys enjoy! http://www.youtube.com/watch?v=1k55Pw3cAZc&list=UUJi14ZLGXBzWIC9uMN7bgMA&index=1 (Message edited by EricZ on December 06, 2012) | ||
| Firemanjim |
Batty, just need good volume on your plenum and you should be good, could even put in a reed set-up to get better air under no boost conditions. My old Turbo Seca had that arrangement. Can you gut the stock regulator and use an external one with a return tapped in? And you could always use a system like the Microtech for boost fueling, one of our 750's that. | ||
| Ericz |
I spent about 4 hours tuning today and had a great time! I spent time sorting out how to analyze all the data from the dyno, Ecmspy, Tunerpro, AEM X-wifi, and the Turbosmart e-Boost 2. It was quite an exercise! I only pushed ~7psi of boost without water injection and tuned for a safe and smoother A/F ratio curve while watching what the EGTs ran. The results are not too bad considering there is much more power to be had after I get the water injection up and running again. It developed about the same power as it has at the same boost levels with previous builds. I still have more to iron out but is is much closer to the final tune. Here is one of the last dyno runs:  | ||
| Ericz |
BTW, I just compared previous dyno runs to todays and I got a HUGE increase in low end torque! Yay!! I gained ~15ft*lbs at 3k! Sweet! (Message edited by EricZ on December 08, 2012) | ||
| Djohnk |
Cool, bike sounds and looks great! By the way its "ft-lbs" not "ft/lbs", everybody does it ft/lbs, but technically that not correct  | ||
| Ericz |
Haha! Wrong operator. Sorry I've been dealing with N*m and lb*ft for a while now in my engineering classes. | ||
| Ericz |
So here are some cool comparisons. I printed these out today to get an idea how my current setup looks aside other setups. Check them out! BLUE: My bike current setup 7psi RED: Stock 2006 XB12 with a Drummer exhaust, Buell Pro series air filter and tuned with ECMspy:  BLUE: My bike with last setup (15psi) and right before it blew up RED: My bike current setup 7psi  BLUE: My bike current setup 7psi RED: My bike old side mount turbo setup 8psi  BLUE: My bike current setup 7psi RED: 88ci S3 with big valve ported heads, ? bigger cams... a nice big bore motor  | ||
| Blackm2 |
Not a fan of that Transformer headlight, but other than that this is the baddest ass XB I have ever seen by far. | ||
| Kdogshirow |
Jeez ! What a difference Ericz , and you are just getting started with the tuning ! When you get your water injection sorted , what is a reasonable number you are looking for on HP ? Torq ? I bet that thing is a wheelie machine right now , lol . | ||
| Battyone |
"Can you gut the stock regulator and use an external one with a return tapped in?" There is no regulator on ddfi3,ecm pulses the pump to maintain the pressure...59psi normal running 69psi at wot,plus about 80psi on fire up! Can rewrite the fuel pressure tables and/or turn off the feature, but will have some huge changes to make to fuel tables to compensate. Might be simpler to leave primary fuel system alone and add secondary -showerhead- injectors with a standalone regulated supply. ddfi3 has secondary tables. I can afford to be a little crude this is drag race only. "And you could always use a system like the Microtech for boost fueling, one of our 750's that." Sometimes i do think about an additional injector controller...just hard to find room to fit more electrics!!! lol Looking good Eric. | ||
| Ericz |
Thanks guys! Kevin, my plan is to run around 20-22psi of boost and I should see 220-240hp at those boost levels. Keeping the front wheel on the ground will be the power limiter for the street, but it is always cool to have excessive power available Batty, I don't think you have the ability to define fuel pressure based on manifold pressure, so it would be best to include an external fuel pressure regulator and have it reference boost pressure between the compressor and throttle bodies. That way you don't have to deal with a decrease in pressure under vacuum but it will increase pressure with boost. You can then rewrite the fuel pump duty cycles to 100% and tune the fueling with the combined MAP and TP in the Load/RPM fuel tables. It would be a good bit of reconfiguring but you would end up with a system that runs really well under all conditions. | ||
| Kdogshirow |
Giggle.... excessive power  Gotta love that . | ||
| Battyone |
Excessive power??? no such thing! too much is never enough...lol I'll be spending a few days going thru tunerpro,to see what I can and can't do. Gonna be fun...not. My head hurts already. | ||
| Ericz |
Spent more time on the dyno today. Got the water injection set up and turned boost up to 11psi. It's running good and I'm having fun Here is the dyno chart showing 11psi in blue and the earlier 7psi in red:  | ||
| Reepicheep |
Nice! What kind of power penalty do you think there would be if it had an actual muffler? Something almost street legal, say as loud as the factory XB race can? | ||
| Kdogshirow |
Good Lord !!  And this is just the beginning ! Go ! Go ! | ||
| Xxxue |
Question is how long will it last till the motor blows up again ? (Message edited by xxxue on January 05, 2013) | ||
| Ericz |
Bill, It would all depend on how much muffler I added. The biggest impact it would have is to slow the turbo response. I would guess that a muffler that could quiet it down to a factor race can level would only cut about 5hp or so off the top. It would be difficult to make one to fit with the space left and not be an eye sore. Kevin, I'm so happy with this thing and can't wait to see more out of it! Xxxue, I know that I had one major failure in the past but that was due to a major error of my own. This motor build is plenty strong to handle over 200hp. I'm not worried one bit. It will be exciting when I begin to see power in the 220-240hp range. I'm pretty realistic when it comes to making power and I think I have this one nailed down | ||
| Glitch |
It will be exciting when I begin to see power in the 220-240hp range. Hell yeah! | ||
| Xxxue |
The problem with harley engines is in the design, they usually can't be pushed to much over a 100 hp with out having crank and transmission failures. Your pushing horse power levels close to that used on stroked harley drag bikes and they are usually using S&S built motor and custom transmissions. | ||
| Ericz |
The crankshaft was built by Darkhorse Crankworks with Carrillo rods, welded crank pin, balanced and upgraded crank bearings. My transmission is a custom built setup using all Andrews gears and shafts that have been cryo-treated and race-prep'ed. The crankshaft and transmission can easily handle any abuse I throw at it. (Message edited by EricZ on January 06, 2013) | ||
| H2opatrol |
Dude, get a life. If you'll notice this thread has been about a guy building a very well researched and extremely well thought out project along with a bunch of other guys encouraging him (as if he needed it.) Granted these engines were never designed for this kind of duty, but like Eric has said and thoroughly documented, he has put alot of thought into what his setup can handle. Is your only purpose on this website to dog these bikes? | ||
| Kdogshirow |
Amen Brother | ||
| Reepicheep |
Interesting build Eric, thanks for sharing. Very cool stuff. | ||
| Blackm2 |
Hey Xxxue, how many turbo "Harley" V-twins have you built? It is a rhetorical question, you don't need to answer as we all know the answer. | ||
| Xxxue |
I have seen enough of them blown up enough when pushed much past the 90 + hp range, even with the additional beefed up parts, the overall engine design can't take much more than buell got out of the engine. Why do you think buell and even the harley xr1200 were so limited on HP. If the manufacturer could reliably get 150hp out of the engine they would do it. Even with the additional custom , parts added its the overall design of the engine , including he cases,crank, bearing design,pistons , rods and tranny, taken together as a whole that create the limitations and major parts start to fail. If you have a lot of money to play around with,them go ahead and experiment. Years back I spoke to major harley head designer and engine builder about the 100 hp. plus motors that he was working on and he told that , yes they will make a 100 hp , but at that point the motors on on the verge of blowing up, and to reliably use the engine you should keep it well below the 6500-7000 rpm range. Overall the proof is in the pudding and we'll see how many miles he gets out of the engine. I've seen the same story all over the net on different forums from guys that allways pushed the limits thru either going to big on displacement or to much turbo boost and the end results are the same, a destroyed engine and pyle of regret. (Message edited by xxxue on January 07, 2013) |
