Quote:
I have the Haynes manual for '91-'99 but my '99 Thunder bird has the Keihin carbs. Does that mean the manual is incorrect for my bike? Are the Keihin carbs better or easier to adjust?
How much torque and RWHP do you think I am getting from my Thunderbird with aftermarket exhaust now (just guessing of course)? I know they have adjusted the air screws probably when they put the exhaust on.
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My Haynes shows both carbs and I think it was '98 that the change was made from Mikuni to Keihin, so you should be covered. Turn the page maybe? :-D
My personal opinion is that the Keihin is a better made carb since there's much less plastic and less slide/needle wear, but the Mikuni is supposed to be more flexible for tuning. I haven't worked on the Mikunis so I can't verify the last.
By 'aftermarket exhaust' do you mean the pipes from the engine or just the mufflers? If it's just the mufflers then there's no difference in peak power over the stock engine at about 60 RWHP.
If you've got a complete aftermarket exhaust system it's impossible to tell what the RWHP is without some dyno time.
I'd also point out that peak horsepower is a poor measure for determining the rideability of the bike. The real issue is how flat the torque curve is over the normal operating range.
Jim
[ This message was edited by: jimmyj900 on 2007-04-19 21:22 ]
