| Author | Message | ||
     Tattoo72 |
I'm looking for these engine specs for the both the 9 and 12. Engine bore size Crankshaft stroke Connecting rod length (center line to center line) Compression ratio Intake valve diameter Intake valve stem diameter Camshaft valve lift (intake) Duration @ .050 (intake) Degreed center line (intake) Lobe center angle Exhaust valve diameter Exhaust valve stem diameter Camshaft valve lift (exhaust) Duration @.050 (exhaust) Degreed center line (exhaust) | ||
| 03worc9r |
I am afraid to ask what your planning, but I think I might want a voo-doo sooner or later. (Message edited by 03worc9r on January 14, 2009) | ||
| Tattoo72 |
I need the specs for a computer program.  | ||
| Firebolteric_ma |
Just take your bike apart and measure it silly! | ||
| Ochoa0042 |
sounds intense | ||
| Tattoo72 |
Why don't we take yours apart Eric. It's on it's way out anyways.  | ||
| Xoptimizedrsx |
Engine bore size xb9 and xb12 = 3.5 in. Crankshaft stroke xb9 = 3.125 xb12 = 3.812 Connecting rod length (center line to center line)xb9= 7.27, xb12= 6.926 Compression ratio xb9=10/1 xb12=10.5/1 Intake valve diameter 1.80 in xb9 and xb12 Intake valve stem diameter .27 in xb9 and xb12 Camshaft valve lift (intake) .551= xb9 and xb12 Duration @ .050 (intake)249 @53 Degreed center line (intake) Lobe center angle Exhaust valve diameter 1.58 in xb9 and xb12 Exhaust valve stem diameter .27 xb9 xb12 Camshaft valve lift (exhaust).551 xb9 and xb12 Duration @.050 (exhaust)249 @53 Degreed center line (exhaust) lobe center angle if you need more pics and measurements let me know i have a motor all apart on the top end side right now.i can get any more measurements you like with pics. i'm hoping your loving that program i sent!!! its going to fix everything. well at least tell you what to change. expeciallt the port shapes they are awful. plus header lengthes are wrong on both xb9 and xb12. i just spent two hrs reading data. now my brain hurts. hold off on the pipe till we all three run some numbers. also go read the post exhaust first. its new in engine spec's from my guy who put me onto this new data tool i set you. its the cats meow. it will change everything. then tune from there. thats the easy part. once its flowing right finally. no more revision cough. mike (Message edited by xoptimizedrsx on January 15, 2009) | ||
| Firebolteric_ma |
It's in the house now, getting ready to tear it down.....Only the good stuff will be put back in....lots of track/racing plans this year....  You can get all the info out of the service manual I believe.... Shoot me an email if you need both 12 & 9 still.... | ||
| Tattoo72 |
I've checked the manual and a lot of the specs weren't in there. They just give you basic stuff. Most of the specs have been found. The only ones needed now are a couple cam specs. I'm gonna try making a few phone calls tomorrow to get them. | ||
| Sloppy |
Wow, not even a "please" or a "thank you"... | ||
| Tattoo72 |
That's ok. If you only knew Eric. He isn't the "please" or "thank you" kind of guy. Just kidding. Eric is a really cool dude. Always there to help his fellow  members.  | ||
| Firebolteric_ma |
I think he was talking about you.....  | ||
| Ducxl |
Hey guys'. I love a good engine build.I've got my popcorn and am watching enthusiastically.Best of luck to BOTH of you. | ||
| Xoptimizedrsx |
i found some hidden numbers last night poking numbers till 2 am. 101.5 top and 108 bottom but they are based on the duration of 53 deg ar 249 it put the vale time right at the noted time in the grind catalog. i'll keep digging. i love this program but it doesnt like sleep. it will tell us everything we always wanted to know. that intake cough will be solved once and for all. as well as exact timing deg to run and ect. so far so good. i have a build sheet going. | ||
| Tattoo72 |
Thank you everyone.  Eric are you going to make it a track only bike?? Or will we still be seeing you out on some Nebo rides? | ||
| Firebolteric_ma |
Can't keep me off the streets...... My bike will be pulling double duty....street & track. | ||
| Ducxl |
 | ||
| Tattoo72 |
Awesome. So your neighbors will still be pissed when you are out there doing burnouts in front of your house. lol | ||
| Firebolteric_ma |
They have learned to except me as I am. We all have our demons... | ||
| Sloppy |
You mean "accept" or tolerate? Acceptance is for people who don't have the ability to change... Tolerance is for people who have decided on their own to be retards...  | ||
| Xoptimizedrsx |
sounds like me too my neighbors accepted me from the start. first week here a burn out and a couple drag cars were going down the street. then came the buell. well we now call out road test track. and the whole neighboor hood is now into something with a engine on it. might even make the old lawn mower a racer for my son. its a 18 hp now deck broken. cant hurt worse case we throw it out. might even give it a shot of nitro. i'll post pics if it get done. its on the board. mike |
