| Author | Message | ||
     Ericz |
With the boost turned up this was the final dyno run today. The throttle body connector popped off from the boost pressure, which really only hit 16psi, and it put up these numbers!!!!! I will fix the connector problem and head back for more boost and more power!! It will break 200hp I know!!!!!  | ||
| Nillaice |
HOLY KRAP!! | ||
| Cataract2 |
While I'm amazed at the power. Anyone else feeling like that engine would grenade for any amount of time at those numbers? | ||
| Xbgeorge |
Wow! I would ride with a steel cup. The work you have accomplished, with this engine, is very impressive. | ||
| Gater |
WOW! I would love to take it for a ride. But remember the more you twist the rubber-band the more likely it will break. | ||
| No_rice |
DAMN!i wish you would haqve had that together last winter when i was there...! | ||
| Ericz |
Thanks!!! Don't worry about the motor. Just be excited for me. I have my own doubts but until they become reality, I'll enjoy every bit of this!!! Here is a video of the final runs. The connector pops off the rest of the way in the last few moments of the clip. http://www.youtube.com/watch?v=OeKRKXfkVT0 | ||
| Skinstains |
Buell supposedly had that turbo piece that those dillholes at harley pulled the plug on. Either way your bike rocks, congrats> | ||
| Firemanjim |
How is the air fuel ratio? Have extra clamps on t-bodies and straps holding plenum down on the 750's. Definite area of problems as I had three aborted record return runs at Bonneville this year when the next weak clamp etc was found and popped t-body, up-pipe tc off. Course we were running 30+ lbs of boost! Nice power BTW,beef up that bottom end!Stock rods not happy at those HP levels--ask me how I know--- | ||
| Kdogshirow |
Ericz , You are my hero ! ! My GOD ! That is COOL !  | ||
| Kdogshirow |
You may have mentioned this in another thread , but what have you done to the motor internally ? Flat Top Forged pistons ? Is that a alcohol/water injection tank on top in the video ? I wish you could do a detailed photo build up and show all the components , you did such a nice job on everything . Is this the first turbo bike you have built ? Your threads , and Jake318's , are the most interesting threads on this forum . | ||
| Blake |
That is some frightening power for a low revving street bike. Wow! | ||
| Ericz |
Jim, I kept the A/F ratio at about 12.5:1 and the addition of the 3 Bar MAP sensor has done an excellent job of keeping the fueling SPOT on under boost!! I am so happy with the fueling results and the flexibility of the mapping. Kevin, Internal mods are CP forged "flat top" pistons with thermal coatings on the tops and anti-friction coatings on the skirts, SE cyl. studs, Cometic MLS gaskets, and some very basic port work just to clean things up. The tank up top is for water injection. I run pure water with no methanol. And this is the first turbo bike I have built. My experience from building my turbo Saab is what got this project going. My plan for this build was to "test" the stock crank components. I know that I am pushing things really hard and if something fails, it will be time to split the cases, maybe weld them up  , and then upgrade the rods and crank and bore the cases for a 1420cc big bore build. It will be great if everything holds together and time will tell, but I really enjoy experimenting with these kind of projects. I almost have more fun building things like this than I do riding them Of course, the thrill of twisting the throttle is always the payoff!!! | ||
| Thumper1203 |
"frightening power"...yes, I think that term is most appropriate!... Potential for MORE?...OMG! (Message edited by thumper1203 on January 09, 2011) | ||
| Natexlh1000 |
I love you little cross-bar LEDs too What are they indicating? | ||
| Ducxl |
My plan for this build was to "test" the stock crank components. I know that I am pushing things really hard and if something fails, it will be time to split the cases, maybe weld them up, and then upgrade the rods and crank and bore the cases for a 1420cc big bore build. It will be great if everything holds together and time will tell, but I really enjoy experimenting with these kind of projects. I almost have more fun building things like this than I do riding them Of course, the thrill of twisting the throttle is always the payoff!!! Pretty cool stuff.Have great fun. | ||
| Slaughter |
Man oh man - if you are running the 05 bottom end, you really and I mean REALLY need to consider doing the 08+ flywheel conversion to get the bigger bearings. Aint cheap - but it'll make a stronger motor. Even at 103-ish HP on the roadrace bike, I'm glad that I have the STRONGER big-end. Hate to see the hard work that you have done coming to grief when the bottom end loosens - or worse - a C-rod lets go and holes the cases. You've done some awesome work - but I'd seriously recommend approaching Dark Horse Crankworks about the flywheels/bottom end work! | ||
| Slaughter |
I just get scared seeing that much power and torque going into the machine AND hitting rev limit. Tread carefully! | ||
| Delta_one |
WOW!!! that is one heck of a bike! But I have to say its the attention to detail that are most impressive, like the LED lights in the cross bar. I was wondering what they were for until I saw the neutral light come on. flawless build | ||
| Ds_tiger |
Ahhhhh- that was wonderful to listen to. I WANT ONE TOO!! Oh - wait - I thought my 1125 CR had too much power for the chassis- what the heck are you going to do with this one?? | ||
| Sifo |
 | ||
| D_adams |
I wonder what you could do on an 1125.... They make more power in stock trim, where's the limit at? The 1190 hit 185+ and it's just naturally aspirated. Imagine throwing a small turbo on that one. | ||
| Firemanjim |
Careful with the 12.5.at lower loads that is not bad but for any long runs under boost it may be a bit lean esp if you are not using any intercooler. We shoot for 11.8--11.5 and have water to air. Sweet power isn't it, ny 1250 made 190 with small nitrous shot on top---it acted as intercooler as well. My 750 is about 350HP now.The hit when it comes on boost is unreal. | ||
| Reepicheep |
Now I want to hear about the turbo Saab! | ||
| Tombuell |
Curious as to what you use for a turbo and a figure of what it costs to build such a kick ass bike! | ||
| Ericz |
Now for the Bad News  On Sunday afternoon I checked over the bike. I replaced the spring clamp on the throttle body coupler with a hose clamp to prevent it from coming off under boost like it did during the dyno runs. Everything looked great and so I took it for a spin. I rode down the main road I live off of and made a u-turn when it was warmed up. On the way back I rolled on the throttle and the wheel came up very quickly in 1st, 2nd, 3rd, and 4th........but with the wheel in the air in 4th gear the front connecting rod let go. I quickly realized what I had done: During the dyno session I started tuning at "base" boost which is 6psi. As I got things dialed in at that boost level, I cranked up the boost controller to 9psi and adjusted the fueling accordingly. I continued to increase the boost in 3psi increments until I reached 15psi. At that point, the next boost controller adjustment did not yield an increase in boost pressure. Strange, I thought, but tried several more runs, each time cranking the boost controller up further. Finally, I realized what was going on when the connector at the throttle body popped off and ended the dyno day. With intake pressures around 15-16psi, the spring clamp and connector ballooned enough to release some of the intake pressure and prevented the intake pressure from going above 16psi. So no matter how far I turned the boost controller, the pressure never went beyond 16psi. On Sunday, when I secured the throttle body connector, I never turned the boost controller back down. Stupid me!!!!! The rod failure was because the boost controller allowed the boost pressure to spike way beyond what I had seen on the dyno. Anyone care to say "Told you so" or donate a 08- crankshaft, Carrillo rods, and 06 or 07 cases I could really benefit from some charity Here is the Huge hole in the front of the case and the bottom half of the front rod pointing out and twisted It ain't pretty...     | ||
| Kdogshirow |
Oh Man ! Well , mistakes happen , thats all a part of it . The trouble is , you dont really know how much boost it could have taken until failure , because of that coupler problem . But thats how we learn . I would not beat yourself up about it , what you have accomplished is more than the majority of us could have . Now , onward and upward ! Time for new S&S cases and stronger parts !  | ||
| No_rice |
that sucks. after all that work to have a simple mistake blow it sky high. any idea what you were running for boost at that time? | ||
| Fast1075 |
This entitles you to honorary membership in KABOOM! RACING team...That is as spectacular as one I did...1428 Kawi 171 hp on motor with 75hp 1st stage nitrous, 50hp progressive 2nd stage....it pulled the pin boss out of #2 piston at around 10K rpm in high gear....it sawmilled the motor in half...The carbs and clutch were usable. | ||
| Andymnelson |
That's AWESOME, in a really crappy sort of way... |
