300 whp fxdr street bike
I have a customer who has been running my Inferno supercharger on his FXDR all last year. He's done 3000 miles with his 210 whp monster. But he wants more power, not a little bit more but 300whp. I told him it should be possible but we would need to build him a strong motor. He already has my clutch basket and compensator. Also the SE117 piston kit and a RS468 cam. Anyway he dropped the bike over. I thought before I pull it down I will just check the power. The motor sounded mint, and it still pulled 207 whp I was really pleased with that. Then I thought rather than pull it straight down perhaps I could check out some of the mods I made to my dragbike. to see how well the changes would affect the street kit on his bike. So I changed out the throttlebody to the SE 64mm, I changed the plenum chamber for a bigger version and changed out the intercooler for one with bigger exit pipe. If this gave me a good increase in power I would have an idea of how achievable 300 whp would be. On the dyno, straight away it was obvious that it was going to make a loadmore power, it was running so lean. To cut a long story short I spent a bit of time remapping mainly concentrating on the top end. Here are the results. I ran out of duty cycle at the top end so even more is power is achievable without any further power creating mods. Now we have his motor down. It will be going back together with the strongest crank available and a big valve head. Its going to be a couple of months yet so watch this space. :)
https://cimg3.ibsrv.net/gimg/www.hdf...a99cacc01b.jpg |
Originally Posted by tts performance
(Post 19673685)
i have a customer who has been running my inferno supercharger on his fxdr all last year. He's done 3000 miles with his 210 whp monster. But he wants more power, not a little bit more but 300whp. I told him it should be possible but we would need to build him a strong motor. He already has my clutch basket and compensator. Also the se117 piston kit and a rs468 cam. Anyway he dropped the bike over. I thought before i pull it down i will just check the power. The motor sounded mint, and it still pulled 207 whp i was really pleased with that. Then i thought rather than pull it straight down perhaps i could check out some of the mods i made to my dragbike. To see how well the changes would affect the street kit on his bike. So i changed out the throttlebody to the se 64mm, i changed the plenum chamber for a bigger version and changed out the intercooler for one with bigger exit pipe. If this gave me a good increase in power i would have an idea of how achievable 300 whp would be. On the dyno, straight away it was obvious that it was going to make a loadmore power, it was running so lean. To cut a long story short i spent a bit of time remapping mainly concentrating on the top end. Here are the results. I ran out of duty cycle at the top end so even more is power is achievable without any further power creating mods. Now we have his motor down. It will be going back together with the strongest crank available and a big valve head. Its going to be a couple of months yet so watch this space. :)
https://cimg3.ibsrv.net/gimg/www.hdf...a99cacc01b.jpg 😳..... |
Holy Smokes!!
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Oh wow! That’s awesome !
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Time for you, to by stock in the tire company he uses for that bike!
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Originally Posted by jake24lt
(Post 19675049)
Time for you, to by stock in the tire company he uses for that bike!
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My Trask turbo RGS was putting out 200 at the wheel and it was uncontrollable. 4-5th gear wheel spins getting on the freeway. For 300 you're going to need an extended swingarm.
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Originally Posted by Oldskewl
(Post 19675909)
My Trask turbo RGS was putting out 200 at the wheel and it was uncontrollable. 4-5th gear wheel spins getting on the freeway. For 300 you're going to need an extended swingarm.
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I'd be investing in caskets and grave plots for this guy......
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Originally Posted by teedoff65
(Post 19676241)
i'd be investing in caskets and grave plots for this guy......
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