2007 96" to 110" Engine upgrade
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Cruiser
Joined: Feb 2006
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From: San Diego
2007 96" to 110" Engine upgrade
Hi anyone considering doing this big bore upgrade? I'm very interested as I have a deposit on a 07 Fatty.
You think they will they have to mill the case out?
You think they will they have to mill the case out?
Tourer
Joined: Mar 2006
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From:
RE: 2007 96" to 110" Engine upgrade
Starting planning early on this one. I have an 07 Duece on order right now and I'm actually looking at the other route of forced induction. I know a supercharger or Turbo can be done fairly easily and going by the Dyno it seems like te way to go. I've never riddin a Harley with forced induction though, so I'm still in the looking around stage right now
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Cruiser
Joined: Feb 2006
Posts: 179
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From: San Diego
RE: 2007 96" to 110" Engine upgrade
ORIGINAL: Jules
Starting planning early on this one. I have an 07 Duece on order right now and I'm actually looking at the other route of forced induction. I know a supercharger or Turbo can be done fairly easily and going by the Dyno it seems like te way to go. I've never riddin a Harley with forced induction though, so I'm still in the looking around stage right now
Starting planning early on this one. I have an 07 Duece on order right now and I'm actually looking at the other route of forced induction. I know a supercharger or Turbo can be done fairly easily and going by the Dyno it seems like te way to go. I've never riddin a Harley with forced induction though, so I'm still in the looking around stage right now
Outstanding HDF Member
Joined: Apr 2006
Posts: 2,537
Likes: 21
RE: 2007 96" to 110" Engine upgrade
Cases do not need to be bored....
Just a bigger bore, as the motor is already stroked.....
With that kit, you will get a new set of heads with ACR's built in.....
Similar to the S&S version.. Haven't seen them yet.... like to see how they are wired up.....
Just a bigger bore, as the motor is already stroked.....
With that kit, you will get a new set of heads with ACR's built in.....
Similar to the S&S version.. Haven't seen them yet.... like to see how they are wired up.....
Road Master
Joined: May 2006
Posts: 941
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From:
RE: 2007 96" to 110" Engine upgrade
ORIGINAL: Shovelhead Bob
Cases do not need to be bored....
Just a bigger bore, as the motor is already stroked.....
With that kit, you will get a new set of heads with ACR's built in.....
Similar to the S&S version.. Haven't seen them yet.... like to see how they are wired up.....
Cases do not need to be bored....
Just a bigger bore, as the motor is already stroked.....
With that kit, you will get a new set of heads with ACR's built in.....
Similar to the S&S version.. Haven't seen them yet.... like to see how they are wired up.....
The Screamin' EagleÂŽ Case Boring Tool takes the guesswork out of boring Twin Cam engine cases to accept oversize cylinders. Designed to be used with a heavy-duty 15" drill press or milling machine, the fixture holds and aligns the cases for accurate machining. Ideal for installing a new '07 Twin Cam 110 cubic inch Stage Kit .
Boring the cases isn't for a longer stroke but for the larger dia. jugs for as you stated the larger bore. 4" bore to be exact. Regular TC 88" engines need a case bored for 4" pistons I would bet the new TC 96" inch does also since they use the same jug size as a TC 88".
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Outstanding HDF Member
Joined: Apr 2006
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RE: 2007 96" to 110" Engine upgrade
Going by what the Svc Mgr relayed to us when he returned from the dealer show.....
Havent seen any of the kits, as they are on order, as well as the stand.....
Havent seen any of the kits, as they are on order, as well as the stand.....
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Road Captain
Joined: Sep 2005
Posts: 583
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From: Maine
RE: 2007 96" to 110" Engine upgrade
Since the cylinders haven't changed, the spigot holes in the cases must be the same as well. The stoke is increased to 4.380" to obtain the 96" displacement with 3.750" cylinders. The Big Bore cylinders are 3.875" still. The combination of big bore cylinders and the 4.380" stroke yields a 103" engine. In order to go to 110", you need to use the Bigger Bore cylinders at 4.060". These will not bolt on. They require opening up the cases and machining the spigot holes to accept them.
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Cruiser
Joined: Feb 2006
Posts: 179
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From: San Diego
RE: 2007 96" to 110" Engine upgrade
ORIGINAL: springer_
Since the cylinders haven't changed, the spigot holes in the cases must be the same as well. The stoke is increased to 4.380" to obtain the 96" displacement with 3.750" cylinders. The Big Bore cylinders are 3.875" still. The combination of big bore cylinders and the 4.380" stroke yields a 103" engine. In order to go to 110", you need to use the Bigger Bore cylinders at 4.060". These will not bolt on. They require opening up the cases and machining the spigot holes to accept them.
Since the cylinders haven't changed, the spigot holes in the cases must be the same as well. The stoke is increased to 4.380" to obtain the 96" displacement with 3.750" cylinders. The Big Bore cylinders are 3.875" still. The combination of big bore cylinders and the 4.380" stroke yields a 103" engine. In order to go to 110", you need to use the Bigger Bore cylinders at 4.060". These will not bolt on. They require opening up the cases and machining the spigot holes to accept them.
I think I will cruise it and break in the engine as a 96" and have something to look forward to and compare the performance when going up to a 103" or 110".
Boring the cases has to be costly. I was hoping not to have do the complete engine breakdown. [&o]
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melrose68
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