Page 1 of 1
Big Bore Kit/Conversion
Posted: Thu Jul 03, 2014 12:09 am
by GregD-UK
Hi all,
I have just had my bike dyno'd and have 118hp at the back wheel. I rideout with my amigos who, alas, ride busa's (got no chance!). So, was wondering if doing the bore kit would add some horses and compete with them somewhat...
Anyone know approx cost and also was thinking about chucking in a 2004 magnesium engine
Cheers men
P.S. Who does this work of the devil in the UK!
Re: Big Bore Kit/Conversion
Posted: Thu Jul 03, 2014 4:24 am
by blinkey501
GregD-UK wrote:Hi all,
I have just had my bike dyno'd and have 118hp at the back wheel. I rideout with my amigos who, alas, ride busa's (got no chance!). So, was wondering if doing the bore kit would add some horses and compete with them somewhat...
Anyone know approx cost and also was thinking about chucking in a 2004 magnesium engine
Cheers men
P.S. Who does this work of the devil in the UK!
I asked griff for a quote. I have a spare engine with broken ceses.
The heads are the big valve type.
The cost to have the heads swapped over and the big bore fitted with setting the bike up with 54's and a power commander was about 1800 quid.
I would be supplying the pc.
Posted: Thu Jul 03, 2014 6:12 am
by HisNibbs
More midrange is always attractive but if you are struggling to keep up with your mates on the road with a Falco I suggest you don't ride out with them. They must be nutters!
Big Bore Kit...
Posted: Thu Jul 03, 2014 8:38 am
by GregD-UK
Hi all,
That sounds like a few dollars for how much difference? Well nibbs, the busa men ride up to scotland and those sweeping roads can be fast and long way between pit stops. They know the roads bstter than me, still wait for me at junctions though...
Might save my pennies and see what my piggy bank can hold

Posted: Thu Jul 03, 2014 9:48 am
by D-Rider
Can't remember the dyno figures that Griff was getting but they were quite impressive.
They are never going to make the Falco a Bussa though (and a jolly good thing too)
I have considered the upgrade myself (not that it will really be of any benefit on most of my riding which is commuting in Coventry!)
The time the costs would be more "affordable" are if you decided that a valve check service was too much of a PITA to do yourself and you were thinking of putting it in to Griff to get that done. Obviously most of the service items will be attended to in the engine rebuild so a good chunk can be offset.

costs...
Posted: Thu Jul 03, 2014 11:56 am
by GregD-UK
Hi all.
Yes DR, all about the dollars! Might find a guy who can bore out and get nicosel coating done. That would be a alot of the donkey work done, then just a re-build to do

Re: costs...
Posted: Thu Jul 03, 2014 12:42 pm
by D-Rider
GregD-UK wrote:Hi all.
Yes DR, all about the dollars! Might find a guy who can bore out and get nicosel coating done. That would be a alot of the donkey work done, then just a re-build to do

In addition to Griff's 1060cc kit, there is also an 1127cc kit from a Swedish outfit:
http://spoonvalleyracing.se/engine-parts.html
Posted: Thu Jul 03, 2014 2:12 pm
by wayno
You had to do it didn't you. You couldn't just keep your mouth quiet, it takes us long enough to come up with an excuse for medium mods, now we all have to find an excuse that allows me to spend £3000 on a massive bore kit and some cams
Greg, just buy yourself a busa for those trips to Scotland and take them to more local roads on the falco where you can beat them
Posted: Thu Jul 03, 2014 2:49 pm
by jonnie_r
Griff can get about 140bhp+, but I imagine that is the later gen1s with big valve heads, the figures. Think the last one dyno'd did about 145?
I have a later engine sat waiting in the shed for just such a conversion, along with some 57mm throttle bodies already adapted as they were off a gen1.
Oh and I currently have 118bhp at the back wheel too.
bhp...
Posted: Thu Jul 03, 2014 3:10 pm
by GregD-UK
Hi all.
£2900 to turn my falco into a fire-breathing dragon
Just seen a turbo busa engine in a bespoke frame with aprilia running gear on youtube. That sounds like a cunning plan. Who wants to chip in
Yes, a mad bike for scotland and a sedate 118bhp falco for local rides....
Where's my piggy bank!
Re: costs...
Posted: Thu Jul 03, 2014 4:03 pm
by zoidberg
GregD-UK wrote:Hi all.
Yes DR, all about the dollars! Might find a guy who can bore out and get nicosel coating done. That would be a alot of the donkey work done, then just a re-build to do

Contact Simon from the tuning works he does rgv and rs barrel plating he could help you out.
Posted: Thu Jul 03, 2014 4:24 pm
by GregD-UK
Hi all.
Cheers Zoid...
Posted: Mon Jul 14, 2014 4:13 pm
by radialfalco
Hi, i have my 1060cc with big valves heads lying around in a corner.
If any one is interested i could sale it for a forum member.
Big Bore Kit...
Posted: Mon Jul 14, 2014 4:18 pm
by GregD-UK
Hi all.
Radialfalco is the kit complete? How much for it and guess the postage will be m7cho for spain...
Posted: Tue Jul 15, 2014 9:36 am
by slickliner6
its easy as pie.....
just buy a gen1 busa..could probably pick up a half decent one for about £2500 or £3000 for a lovely one like mine (but i aint selling YET).
