Only the British sidecars are allowed billet barrels, otherwise it's cheating.Originally Posted by Kickaha
I hope you bought the billet block as well?
One of the Australian classic sidecars uses one and 74mm XR250 pistons
Forum whore
Only the British sidecars are allowed billet barrels, otherwise it's cheating.I hope you bought the billet block as well?
One of the Australian classic sidecars uses one and 74mm XR250 pistons
In the riders seat
Bit of bead blasting and they'll never know, how'd that guy with the Matchless sidecar make his?
"If you can make black marks on a straight from the time you turn out of a corner until the braking point of the next turn, then you have enough power."
In the riders seat
Going on what the guy in Oz runs with CB900 crank and the XR250 74mm piston he's 1187cc and the baby motor with the same crank and 70mm piston is 1062cc
"If you can make black marks on a straight from the time you turn out of a corner until the braking point of the next turn, then you have enough power."
Two Wheels or Three = FUN
Still 1300cc limit last time I looked.Billet barrel or not the "British" Matchy was still 799cc last time I measured it...well it was when I made it anyway
Low personal B.M.E.P.
It may be, but it wouldn't be easy as the single cammer uses two roller chains side by side for the primary plus a roller chain for the cam drive. The twin cam 900 uses a wide hyvo chain for the primary and another hyvo for the cam...I'd think there may be clearance issues too.
Are we comparing apples with apples ? Is the Aussie one Kick's quoting a single or twin cam motor ? I thought noddy had found a single cammer ? You would not use XL/XR250 pistons in a single cam motor either...
In the riders seat
It's in a SOHC discussion and he has pics of a SOHC motor, although it appears it runs a aftermarket home made barrel
It's in here http://forums.sohc4.net/index.php/topic,53817.0.html
"If you can make black marks on a straight from the time you turn out of a corner until the braking point of the next turn, then you have enough power."
Two Wheels or Three = FUN
When Graeme Cole and I went to Eastern Creek in 2000 with the Matchy, the fastest of the single cam Postie chairs supposedly had 900 cranks in them, or so we were told. Anything is possible if you really want to push the boundaries I guess
In the riders seat
http://www.satanicmechanic.org/bigbore.shtml
CB 900 F DOHC crank
For the ultimate power hungry: The Honda Bol d'Or / CB 900 F DOHC crank can made fit into the CB 750 case to deliver 69mm stroke (63mm stock). Combined with stock or big bore:
Bore (mm) Displacement (cc)
61.00 807
65.00 888
67.00 973
67.50 1002
70.00 1062
73.00 1171
Bearings fit, so much for the good news. Rotor and ignition are swapped on the Bol d'Or crank, so you'd best swap them, too. (Need to put an oil seal on the left side). For racing, you may leave out the rotor and use a total loss ignition or a magneto. Primary chain is a Hy-Vo chain now, which is good as you would need a stronger primary train anyway. A drive sprocket from a Gold Wing can be fitted on the stock primary wheel. Need to take care of a chain tensioner. Cam chain also is Hy-Vo, probably machine a Bol d'Or or late CB 250/450 N cam sprocket to fit the SOHC/4 cam. Longer stroke means either shorter rods or a spacer under the cylinder foot, which is what most people do. Find a cam chain that fits, build a chain tensioner, and you're done. :-) Well, almost...
Bit here about it as well
http://forums.sohc4.net/index.php/topic,32541.25.html
"If you can make black marks on a straight from the time you turn out of a corner until the braking point of the next turn, then you have enough power."
i'm motarded
Fucksakes stop giving away all my secrets.
now I just need to find a dole bludger in wanganui that was doing that in his garden shed in 1970 and it will be eligible.
In the riders seat
First Gen CB900F didn't come out until 1979 so you're fucked
"If you can make black marks on a straight from the time you turn out of a corner until the braking point of the next turn, then you have enough power."
Saving the goat....
This guy in Wangy had one.... true...
Is it still beastiality if ya fuck a frozen chicken??
i'm motarded
ill just weld 2 450's together
is that rat?This guy in Wangy had one.... true...
Saving the goat....
Close.... he went jet ski racing too....
Is it still beastiality if ya fuck a frozen chicken??
Low personal B.M.E.P.
If it is in single cammer cases and still uses the correct barrel - even with a spacer - you're fine. Internals are relatively free, eh Nev.....
I'd never have though it was worth doing all that shit to a single cammer but what do i know....Some people must just go looking for ways to spend money.
Two Wheels or Three = FUN
Still looks stock on the outside...Hey I didn't make the rules (or break them), I just took them to their limit
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