Watch Out!!

[Bottle_Fed]

Don't underestimate Bonnevillebilly's bike at the bash! He's gonna be packing some Mikuni HSR's

Greg

[bennybmn]

Nice!! Hopefully he can get the jetting dialed in. How are they to work on?

[TonUp]

I am really curious to see it run WIDE FUCKING OPEN!! I am sure it will do 130mph plus!




Tito



Ton Up!

[bonnevillebilly]

LOL. I haven’t even changed out the break-in oil on the
904 big bore install yet. I just got the stock carbs dialed in
pretty good. She really feels like a whole new beast now.
She has a lot more torque and she pulls a lot harder.
I can feel the front lift when I get on her.
I never liked the slight hesitation in the stock carbs
you get when you twist the throttle.
I have heard nothing but good stuff about the Mikuni HSR 42’s
They should add another 10 HP on top of the 15/20 HP from the Big bore
I’m told they will put the same shit eating grin on my face
that I got on my face with the BB kit all over again.
WoooooHooooo I can’t wait for spring.

Nice!! Hopefully he can get the jetting dialed in. How are they to work on?

From what I have read about them they are very easy to work on.

I am really curious to see it run WIDE FUCKING OPEN!! I am sure it will do 130mph plus

Yeah Baby..... I can't wait to open her up (WIDE FUCKING OPEN) LOL.

Bill

[Bottle_Fed]

They are very simple to tune, and change jets. You will really be amazed at the simplicity of it. Of course, as I stated before, if you run into any problems or questions I'm here for you.

Greg

[bennybmn]

I drilled the slides on my stock carbs which helped the throttle response a bit, but I'm considering some aftermarkets also. Such a long list tho...

[Bottle_Fed]

There is one thing about the HSR's, you can't whack them open below 3.5k or you will get a lean bog. A nice heavy roll on and your fine, but without the pumps enabled you get the sound of a rochester quadrajet with the breather lid turned upside down

Greg

[bonnevillebilly]

Greg
I remember hearing talk about how you have to twist the throttle easy under a certain
rpm before you wake it open 3500/4000. and it is some thing you get use to very easy.
I talked with Mikeinva a few times last nigh thru PM's on RAT and we talked about
the same thing.
I think what I'm going to do is get use to the feel of the 904 first because there
is definitely a big difference in the performance.
Then I will install the Mikuni's to feel them out and then decide whether or not I will
activate the accelerator pumps.
Bill

[Bottle_Fed]

I don't think you will need them. More than likely, with you new found power, you won't be wacking it under 3.5k. Hell, the only time I did was on the dyno, then I just advised the dyno operator to wait until 3.5k to wack it. It won't be a problem for you.

Greg

[sweatmachine]

I have heard nothing but good stuff about the Mikuni HSR 42’s
They should add another 10 HP on top of the 15/20 HP from the Big bore
Bill

I think you'll gain more from the mikuni's than you did from the big bore, but there's no way you got 15/20 hp from the big bore. Maybe 10-12hp, and another 10-12hp or so from the carbs.

To put it another way, your bike with the carbs and big bore should make right around 80hp give or take 2-3 hp.

[bonnevillebilly]

Sweat
LOL.. I keep forgetting you worked on one motor in you life and you are now the expert.
15/20 HP maybe wishful thinking but opening up the air flow in the carb's and the pipes
with the 904 sure feels pretty damn good.
Maybe you are thinking 10/12 HP with the 904 on your bike because it's trying to hulling your heavy Ass around LOL.
Bill

[sweatmachine]

whatever you say Bill.

Post over in the Ace Cafe Delphi forum that you gained 20 hp from the 904 kit and wait for the laughs.