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Discussion Starter · #1 ·
Any one out there have the 904 big bore kit installed
in there 790 motor?
I'd like to hear some input on how much stronger she feels.
And if you think the gains are worth all the $$$

I have been thinking about having it done in the not to far
future.

Any thoughts would be appreciated.
Bill
 

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Discussion Starter · #5 ·
SCCTrim
Those look like some pretty impressive numbers.
I'm thinking once I rack up a few more miles on the bike
I may have it done. I'm guessing the kit plus the labor
will run me around $1.200 to $1,500
That's a lot cheaper then buying a new one . Beside the
fact I could never part with my 2001 Bonny.
Do you think that big sh** eaten grin on your face when
you crack the throttle is worth the $$$ ???
Bill
 

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Yea it's worth it, adding the 904 kit gave me roughly 10/15 more horses and a healthy gain in torque. I added my kit after the bike only had roughly 4000 miles on it...no regrets.

I opted for the BC kit as it had nikasil coated liners, similar to the factory setup...rather than the wiseco kit. It cost me...but nothing's too good for my baby.

If you really want a performance gain...add carbs.
 

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Discussion Starter · #8 ·
I looked at the B.C. kit and the wiseco kit, and with bc. kit
being almost double the price. I think I'd opp for the wiseco
kit. I was also looking at the 988 kit but, that looked to be
to much involved with changing the connecting rods.
I'm sure when I add the kit I won't stop there, I'll be looking
to beef up the carbs.
Thanks for the input.
Bill
 

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On 2006-11-11 15:54, Brooksie wrote:
SCC-do you think that the 35mm Kehins can give what the Mikunis do? How about those $1200.00 ones sold by BC?
I wouldnt opt for the fcr's only because if I'm gonna spend that kinda money I'm gonna get the mikuni's.

Besides...the mikuni's come with airbox elim and billet intakes.
 

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I'm curious BonnevilleBilly, do you know who you are going to get to do the work for you? I'm considering a big bore kit myself, but I'm not sure who to get to do it here in Mass. The service manager at a shop in Somerville didn't even know there was a big bore kit available for the bonnie :eek: , so they are out.

have a good one,
JD
 

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Discussion Starter · #11 ·
On 2006-11-11 19:11, JDHart wrote:
I'm curious BonnevilleBilly, do you know who you are going to get to do the work for you? I'm considering a big bore kit myself, but I'm not sure who to get to do it here in Mass. The service manager at a shop in Somerville didn't even know there was a big bore kit available for the bonnie :eek: , so they are out.

have a good one,
JD
Actually, I was thinking of doing it my self. I would pull the
jugs off and have a machine shop bore the cylinders and
press in the sleeves. The rest I'm sure I could do my self.

Depending on the cost to have it done and
Or, if when the time comes when I'm ready to have it done
and I'm not feeling so brave to do it my self.

Triumph of Swansea would do it for me. They would send
the jugs out for machining but, they would do all the mechanic work.
Bill
 

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I had the 904 job done on my bonnie and I'm pretty chuffed with the results. I also binned the airbox in favour of a pair of K&N pods and fitted a set of togas. I'd say, bonnevillebilly, that you're on the right track with having the barrels done by a specialist engineer rather than having the whole job done by your local dealership. SCCTrim's cam and carb mods will probably be my next performance mod as well as porting - in retrospect, I wish I'd taken the time to do that when I had the BB kit fitted.
Good luck. :cool:
 

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Discussion Starter · #13 ·
keef
chuffed with the results.... Is that a good thing or is
(chuffed) a bad thing???
Bill
 

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Lol - in the UK, "chuffed" means pleased. As in "well chuffed", "chuffed to bits", or as a qualifier in e.g. "chuffing marvellous". :wink: :-D
 

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Discussion Starter · #15 ·
On 2006-11-12 16:10, steviek wrote:
Lol - in the UK, "chuffed" means pleased. As in "well chuffed", "chuffed to bits", or as a qualifier in e.g. "chuffing marvellous". :wink: :-D
Thanks
I am very "chuffed" to hear it is a good thing.
 
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