agro
Scooter
Did BP balance up the crank, got any pics of the balanced crank?
1087 SFS Up and running
- Thread starter 1087
- Start date
Did BP balance up the crank, got any pics of the balanced crank?
sweatmachine
moped
Make that 2 Fred!
Greg
make that 3 Fred!
Bottle_Fed
Two Stroke
Yep
Intake port
Greg
Intake port
Greg
mikenva
Rocker
argo mine looks like gergs .With twin motors you get 1/2 the power pluses, at low speeds you get with a in line 4,you can feel the motor fire like old hds and triumphs what those heavy shafts do is cover that up they dont really cure any out of balnce in crank rods or piston hell there very crude made to say the lest once rpm gets up the pluses smooth out heck at 60 to 70 mph if i couldnt hear mine i wouldnt know it was running hands dont go to sleep like it did with the stock motor on long trips.
Fast Freddy
Vendor
lOOKS LIKE IT IS JUST A MATTER OF PREFERENCE,IF BALANCE SHAFTS ARE IN OR OUT. I CAN SAY IT, MAKES NO DIFFERENCE ON THE DYNO ON THE BACK LASH GEARS. I DO BELIEVE NO COUNTER BALANCER WOULD INFACT HELP IN SPOOLING UP THE POWER, MAYBE UPPER HP #S WILL INCREASE. THANKS FREDDY
1087
Vendor
1087 Update
Replace 813 cams for shim under bucket cams (more lift and duration), and a custom module( revs to 8500 RPM's and custom timing).
These was the last dyno run with the current Thruxton headers and street Dominators and 39 FCR's.
We gain 1 RWTQ and almost 7 RWHP.
Great conditions today:
67 degrees
30.8 Air Pressure
58.8 humidity
Now it's time to start to play with the last stage of mods ( exhaust and carburetors).
Here is the dyno run:
Replace 813 cams for shim under bucket cams (more lift and duration), and a custom module( revs to 8500 RPM's and custom timing).
These was the last dyno run with the current Thruxton headers and street Dominators and 39 FCR's.
We gain 1 RWTQ and almost 7 RWHP.
Great conditions today:
67 degrees
30.8 Air Pressure
58.8 humidity
Now it's time to start to play with the last stage of mods ( exhaust and carburetors).
Here is the dyno run:
Chris in NC
Street Tracker
Carlos, That's a mighty purdy graph.. no 'hiccups' anywhere.. I should send you a motor.. ahem...
Fast Freddy
Vendor
Carlos , COOOOOOOOOOOOOOOOOOOL bout time. Awesome. FREDDY all that before 8200 rpms.
1087
Vendor
Thank you Phil!
The SUB cams are off the shelf item as well as the 813's.
Sorry I don't have the my 813's anymore.
If you like more info feel free to mail me.
Thanks again!
1087
Vendor
Fast Freddy
Vendor
Sure hope so.
1087
Vendor
First Run with 2 into 1's
Went to the dyno again today! This time the only change is 2 into 1 D &D exhaust system. Did only 1 run, it has a mid range issue from lean to way too rich back to normal, and it was running rich in the main jet as well. Need to go with a different needle and 1 size less main jet. Nevertheless it picks 4.7 RWTQ and an outstanding 8.6 RWHP. here is the run:
Went to the dyno again today! This time the only change is 2 into 1 D &D exhaust system. Did only 1 run, it has a mid range issue from lean to way too rich back to normal, and it was running rich in the main jet as well. Need to go with a different needle and 1 size less main jet. Nevertheless it picks 4.7 RWTQ and an outstanding 8.6 RWHP. here is the run:
TC_Dick
TT Racer
Went to the dyno again today! This time the only change is 2 into 1 D &D exhaust system. Did only 1 run, it has a mid range issue from lean to way too rich back to normal, and it was running rich in the main jet as well. Need to go with a different needle and 1 size less main jet. Nevertheless it picks 4.7 RWTQ and an outstanding 8.6 RWHP. here is the run:
I am now officially afraid of this motorcycle.
:flag: