| Author | Message | ||
     Firemanjim |
John,I wonder if you could give some details on how your turbo engine is put together--size,cam type,stock or aftermarket cases and crank.Brian was a little worried about engine life span as we neared 160 RWHP.So I will have to upgrade stuff for next year. Thanks for all the tips,finally got it narrowed down to fuel feed.I hooked another hose from plenum to fuel bowl,raised needle all the way and shimmed it,and opened up float needle seat with jet drill a little--also float level was off. | ||
| Vr1203 |
John,I wonder if you could give some details on how your turbo engine is put together--size,cam type,stock or aftermarket cases and crank. Me too please! I'm into it big time now! I'm shooting for 125 to 145 HP's.  | ||
| Firemanjim |
OK,Jim,what are those strange pieces hanging off the side of you bike.(What happened--a hand grenade go off in the garage?)What are you building there? | ||
| Vr1203 |
Firemanjim, I installed H2O injection , Aquamist, neat stuff. Look up some of my old posts. Is the shop kind of messy? I need input on the build up.I'm reconfiguring the Aerocharger, different compressor wheel and diff turbine housing. Thats about all I have started. I need cam ideas,roller rockers? crankshaft work? carrillo rods?I want to run at 7500 RPM. I'm thinking 9 to 1 cr. With H2O and a intercooler maybe more? Different drive pulleys? | ||
| Firemanjim |
What kind of HP are you shooting for?Definitely go with rods and roller rockers,probably cases,and crankshaft,cams I know nothing about,except the normal hot cams are wrong for a turbo.How much boost are you going to get with rework? | ||
| Roc |
I don't know for sure FMJ, but I'd say he is going for 125 to 145 HP.  Jim - I think 9:1 for a static compression ratio is probably to much, if you really want to crank up the boost. Aerocharger told me 8:1 and I went to 8.25:1. Stock S2 cams, stock t-storm heads, 8.25:1 CR, and 15 pounds of boost should take you to well over 125 HP at 6KRPM. If you want 125 to 145 HP you can make it for much less money than you can make 125 to 145 HP with a 7,500 RPM redline. It's that RPM, to much changing direction, that will cause you to spend the $ on the internal parts. JMHO | ||
| Vr1203 |
FMJ cases? Roc how about 9:1,H2O,115 octane,15lbs and 7000rpm's? What would that give me? Maybe I'm shooting my HP's numbers a little low  How could I make it live a while? I'm not going across the country, just a squirt once in a while. I want POWER | ||
| Buelliedan |
Jim M, Every time I see your bike you are doing something new to it. Damn dude, have you even put 500 miles on it since you bought it? Just ride it and enjoy it this summer. Once winter hits rip it apart and go for the big numbers. | ||
| Firemanjim |
Jim,Brian Nallin told me that with that much HP I need to worry about the stock cases deforming.Going to look at S&S, etc.Stock crank is pressed together and will do same.Remember the stock Sportster engine(our engine) only puts out about 59-60 something HP stock,and we are looking at 2-3x that. | ||
| Vr1203 |
FMJ, Good reasons for cases, how much $$$? ,I'll look into it.Crankshaft options? BDan, It was broken,knockin'pretty bad and I had another bike I just finished this winter.One word for 500 miles on it;  ...torture | ||
| Vr1203 |
Now I'm wonderin', should I abandon the turbo?  Maybe just a simple big bore job  | ||
| Firemanjim |
Vr,turbo is still the way to get most power for dollar spent.Keep engine docile with lowered compression and turbo spec type cams and don't shoot for stratospheric HP #'s.I did big inch motor last go around,and turbo was less money,especially cause I got it second hand.I think most of my problems stem from fact I am sticking it on that same big inch motor--and I am turbo ignorant!!From watching #'s from Roc's stock S-2 he was pulling more HP than my big inch motor last year at Aaron's.And not yet running as good as it could. | ||
| Vr1203 |
.....and I am turbo ignorant!!From watching #'s from Roc's stock S-2 he was pulling more HP than my big inch motor last year at Aaron's.And not yet running as good as it could. Posted on Tuesday, May 06, 2003 - 11:26 am: -------------------------------------------------------------------------------- OK,people,we're starting to rock and roll.I had Brian Nallin here at Vallejo Buell yesterday.After tuning and tinkering for about 5-6 hours,we pulled 156rwhp and 127ft-lbs at 6600 rpm,definitely more there,just did not want to stress bike too much.Still a little fat,so I will change jet and needle setting again.Probably 160+ easy.Yeeha!!!!! I cannot say enough about all the support I have gotten from my dealer.Terry Parsley had the dyno booked for me all day,and to have Brian there was just way over the top.Thank you,thank you,thank you!!!!! Holy big power Batman! 156HP and you're unhappy? Whats Roc's ,190? | ||
| Firemanjim |
Vr,last year 88" motor done by Nallin with stepped open pipes made 121 hp.(My own fault as I went conservative against Brian's recommendations)Roc's bike was making about 125 last year.So a stock S-2 with turbo made more than the big bore,cammed,ballanced,etc. bike.Now its making 156 and has the potential for a bunch more. | ||
| Vr1203 |
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| Vr1203 |
FMJ, I like the thought of the turbo, its just bumming me out. And I'm thinking I've worked on this thing for two years and now with the changes I'll be starting over.120 inches what do you think of that? Very expensive, to the tune of $20,000!  | ||
| Aaron |
You'd have a hell of a time getting that thing to fit in a Buell chassis. | ||
| Vr1203 |
FMJ, OK I got it figured out now. You're running the turbo on the 88"er? Changed the pistons to a lower CR? Changed the cams? And now its making 156HP's? And looking for more? Man thats nice power!!!  Where do I sign up? Aaron , If a person could afford to pay $20,000 for the 120 incher, he could afford a high dollar Jesse James type to make fit somehow! | ||
| Blake |
And if you did manage to wedge it into a Buell chassis, you'd have a hell of a time keeping said Buell chassis on the roads of planet Earth. | ||
| Firemanjim |
Nope,did not change anything,still have Redshift cams ,and high compression relative to a turbo,so I have limited boost and timing,and high octane race gas.Wanted to sort out turbo first and that took quite awhile.Next year we juggle pistons,etc for more power. | ||
| Jim_witt |
Jim mentioned: If a person could afford to pay $20,000 for the 120 incher, he could afford a high dollar Jesse James type to make fit somehow! Or, they could buy ONE of these for HALF the price of JUST the 120"er.  -JW:>  | ||
| Vr1203 |
Jim W. mentioned Or, they could buy ONE of these for HALF the price of JUST the 120"er. Awesome photo!Looks like something from the Isle of Man. Everyone around me says I should just buy a 'Busa and be done with it.But what's the challenge in that? The "challenge" is the essence of the multi- million dollar aftermarket go fast Harley(and Buell) industry. Its the underdog frame of mind,I quess. | ||
| Vr1203 |
FMJ mentioned, Nope,did not change anything,still have Redshift cams ,and high compression relative to a turbo,so I have limited boost and timing,and high octane race gas.Wanted to sort out turbo first and that took quite awhile.Next year we juggle pistons,etc for more power. I, basically did the same thing. It did not work well. Not to the tune of 156hp. Try 103hp. A real sorry situation by the looks of it. Maybe a plain(non turbo) 88in motor is better for mere mortals.} | ||
| Vr1203 |
Blake mentioned, And if you did manage to wedge it into a Buell chassis, you'd have a hell of a time keeping said Buell chassis on the roads of planet Earth. If I'm wrong tell me but Eric Buell's philosophy is total balance of the motorcycle. Politically Correct Motorcycle Engineering. Too bad, but thats what the aftermarket makes up for.Its time to be outrageous! Unfortunately there is no way I could afford it! There has to be someone ,Jay Leno? Because there are components to assemble such a motor and given there could be a way to use the basic geomerty of the Buell, should we just discount it? | ||
| Blake |
Vr, I just meant that it would have deadly amounts of torque and power. The throttle grip would darn near need a full 180o of travel just to keep from endoing the thing getting it out of your driveway. But hey, I'd give it a shot. ![:]](http://www.badweatherbikers.com/buell/clipart/proud.gif) | ||
| Firemanjim |
Vr,give a little more detail on your turbo woes--what was your engine set-up like and is this an Aerocharger also?What was it running like and how much boost,did you do dyno tuning and how was fuel ratio at boost--that was where all my problems were?What carb? | ||
| Ezblast |
Old news! Already been shoehorned into a Buell by Zipper - themselves - read about it in an old issue of Hot Bike - they slipped it into an M2 if I remember - could be wrong -could have been an S1 - all I really remember was that it was a staff bike and the guy was really happy with it! Got Thump?! Just Blasting on the Dark side! EZ  | ||
| Vr1203 |
FMJ, I did a search on my name, here last night , A person can get a real good idea of the things I went through in the last two years. Ezblast, Never seen that ,wow ,it must have been GREAT | ||
| Firemanjim |
Vr,I read through a bunch of your posts.Are you running the Mikuni carb?Thats where I had alot of my fuel feed problems.Float was low,needle needed to be shimmed,running a 200(I think) main jet,and the needle and seat set-up that Aerocharger has in them is a very small one because of electric fuel pump pressure,and I opened this up a little as all of my problems showed up at full throttle/high boost conditions.I also had to turn up fuel pressure almost to the point of overwhelming the needle and seat to get it to run better --- to the point it was flooding until I dialed it back a touch.Each of these things contributed to improving high rpm running.Your boost controller has two set screws on it,one on either end,one limits travel of piston the other changes spring pressure.You can fiddle with these to try and get more boost.I was seeing over 16 at first and am now at about 9-10.I was told Buell system stock setting was 11.5 max.Also newer style plenum supposed to make more power with less boost.Remeber that these were made to fit stock Buells,so fuel feed set-up and rpm range they were to be run in not like our bikes.I gapped down plugs like Roc and it ran better . | ||
| Vr1203 |
Quote[Vr,I read through a bunch of your posts.Are you running the Mikuni carb?yesThats where I had alot of my fuel feed problems.Float was low,needle needed to be shimmed,running a 200(I think) main jet,and the needle and seat set-up that Aerocharger has in them is a very small one because of electric fuel pump pressure,and I opened this up a little as all of my problems showed up at full throttle/high boost conditions.}my ran bike good at WFO/high RPM but it had bad throttle response in the middleI also had to turn up fuel pressure almost to the point of overwhelming the needle and seat to get it to run better --- to the point it was flooding until I dialed it back a touch.Yep ,fuel pressure adjustments and flooding Each of these things contributed to improving high rpm running.Your boost controller has two set screws on it,one on either end,one limits travel of piston the other changes spring pressure.You can fiddle with these to try and get more boost. I fiddled with rod lengthsI was seeing over 16 at first and am now at about 9-10.I was told Buell system stock setting was 11.5 max.Also newer style plenum supposed to make more power with less boost.Remeber that these were made to fit stock Buells,so fuel feed set-up and rpm range they were to be run in not like our bikes.I gapped down plugs like Roc and it ran better I messed with plug gaps too} ] |
