Hypothetical 96ci Build

[RXBOB]

what would it take to get 100+HP and 100 FTLBS out of a 96ci bike? Was looking at more of a HP build but obviously want it to get it going aswell
What would be a suitable HP cam? so the compression can be gained by decking the heads? whats the smallest CC that can be gained and not run into valve to piston clearance issues?

Hypothetically Could you get a 10.5/1+ compression, run a 1.9 intake valve and cam like the Reaper 594 in a 96ci

would really like to here everybodies thoughts?

[sfmichael]

Might be better off with the 574 or even one of the smaller grinds. The 574 will make 100hp with good heads and all the rest of the requisite Stage 1 stuff. Might not need 10.5 but probably wanna try to get pretty close to 10 anyway.

[TorQuePimp]

  Any particular reason you do not want to turn it into a 103 ?

  I would not chew that much off the heads just to gain compression and leave it a 96

[RXBOB]

No real reason other than ripping the 103's and just saying its a 96ci

and to see what can be gotten out of a 96ci

[Hillside Motorcycle]

No real reason other than ripping the 103's and just saying its a 96ci

and to see what can be gotten out of a 96ci

I can understand what your sayin'.
If in fact the 96"er was attended to correctly, with one of several cams, absoluetly no reason whatsoever, that even MUCH more that 100/100 could be realized.
An Andrews 37 would do it, and more.
No sweat getting a 98"er to pop 118-120 hp with a Wood 8, for example, and no reason a 96", shouldn't be right near those numbers, again if attended to correctly.
FWIW, during conversation a couple weeks ago with Jimmy Light, from Horsepower, Inc., he reminded me of the 96"(over-bored 95") engine we had set-up for one of their employees quite a few years ago.
143 hp, on a Superflow dyno over near their facility. I had forgot about that one.
Scott

[Ohio HD]

There are a few ways that one could get there, but basically like Scott had said, treat the 96 like a 98 build, and there you are. Below is just a scenario, but it would be close to what you could expect.

10.5 compression, Andrews 31 cams, maybe a slightly larger TB, heads flowing 155 @ 10", good exhaust system. Torque would probably be higher than what's shown by 10% or 15%.

It's the nature of the software to list that kinda low. 

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[sfmichael]

The 31 surely looks like it would get the job done provided one would get the compression over 10:1, but why not go 32 and get the benefit of the additional lift?

I mentioned the 574 simply because he mentioned Fueling cams; there are at least a couple dozen cams that will get him over a hundred. I know you know that, not being a smartass or anything.   

[Ohio HD]

As long as he has valve to piston clearance after taking about 0.070" off the heads, and loses 0.015" to the head gasket, and uses a 1.9" intake valve, you can use anything. Stock pistons don't have all that deep of pockets for the valves. A head with 0.070" taken off might put that 1.9" valve out into the cylinder a little depending on lift. It would need checked for sure.

[sfmichael]

As long as he has valve to piston clearance after taking about 0.070" off the heads, and loses 0.015" to the head gasket, and uses a 1.9" intake valve, you can use anything. Stock pistons don't have all that deep of pockets for the valves. A head with 0.070" taken off might put that 1.9" valve out into the cylinder a little depending on lift. It would need checked for sure.

You smart cookie...   

[Ohio HD]

As long as he has valve to piston clearance after taking about 0.070" off the heads, and loses 0.015" to the head gasket, and uses a 1.9" intake valve, you can use anything. Stock pistons don't have all that deep of pockets for the valves. A head with 0.070" taken off might put that 1.9" valve out into the cylinder a little depending on lift. It would need checked for sure.

You smart cookie...   

Just conservative....   that's why I'm only running a 0.550" lift cam.   

[Night hog]

Wouldn't mind having that program that you used to post that sheet, what is it called?  Thanks

[Ohio HD]

it's called Accelerator.

[1FSTRK]

FXST120r
Take a look at this thread, the later pages contain the dyno graphs.

http://harleytechtalk.com/htt/index.php/topic,58284.msg619140.html#msg619140

[mike jesse]

CP makes a .010 in. over piston for the 96 with an 8cc positive dome.
That would help cure the low compression.

[Admiral Akbar]

IMO it's better to build a good 103/107 then smoke the guy badly.. Later ask the guy if he's sure his bike is a 103..
Max

[JimB]

 Lying about HP, TQ & motor size is an old tradition in Hot Rodding...Build a 107 & tell them you're expert builder & its just a 96....

[Night hog]

Yep, only my buddies know that I have 98", if I meet someone at the light it is stock.

[Deye76]

No real reason other than ripping the 103's and just saying its a 96ci

and to see what can be gotten out of a 96ci

Treat it like a Hippo build, you'll punish a stock 103" easily.

[strokerjlk]

what would it take to get 100+HP and 100 FTLBS out of a 96ci bike? Was looking at more of a HP build but obviously want it to get it going aswell
What would be a suitable HP cam? so the compression can be gained by decking the heads? whats the smallest CC that can be gained and not run into valve to piston clearance issues?

Hypothetically Could you get a 10.5/1+ compression, run a 1.9 intake valve and cam like the Reaper 594 in a 96ci

would really like to here everybodies thoughts?

Do it with stock heads 

[RXBOB]

As long as he has valve to piston clearance after taking about 0.070" off the heads, and loses 0.015" to the head gasket, and uses a 1.9" intake valve, you can use anything. Stock pistons don't have all that deep of pockets for the valves. A head with 0.070" taken off might put that 1.9" valve out into the cylinder a little depending on lift. It would need checked for sure.

Yep this is all the things that are going through my mind, I was hoping someone was gonna say that you can take "x" from stock heads and no more
I have sent a few emails out to the Cam Mobs asking for certain cam optimum comp ratios, then I can work out what needs to happen to heads.

[Ohio HD]

As long as he has valve to piston clearance after taking about 0.070" off the heads, and loses 0.015" to the head gasket, and uses a 1.9" intake valve, you can use anything. Stock pistons don't have all that deep of pockets for the valves. A head with 0.070" taken off might put that 1.9" valve out into the cylinder a little depending on lift. It would need checked for sure.

Yep this is all the things that are going through my mind, I was hoping someone was gonna say that you can take "x" from stock heads and no more
I have sent a few emails out to the Cam Mobs asking for certain cam optimum comp ratios, then I can work out what needs to happen to heads.

If you remember a post some time back last year, Kirby had made mention to check TDC lift when using a flat top piston, to set the valve at the TDC lift with the valve spring off, look at the combustion chamber and see where the valve is. I did this with my Andrews 55 cams, the intake has 0.197" TDC if I remember correctly. I had plenty of room, the STD size intake was still inside the combustion chamber, so no way it's hitting the piston.

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[RXBOB]

Good stuff Thats what I will be doing, the 55 is a cam option we are looking at

[Ohio HD]

Good stuff Thats what I will be doing, the 55 is a cam option we are looking at

  That's the big brother cam to the 31's, I like the 55's they pull strong.

[Ohio HD]

Good stuff Thats what I will be doing, the 55 is a cam option we are looking at

By the way, that head had 0.016" removed when it was check TDC lift.

[Hillside Motorcycle]

A little Wood 6, surrounded by good heads, intake, pipe, will roll well over 100/100, at 10.25 cr.
Just another option......
Scott