Oil pump alignment
This is a very confusing issue to me also. Best I can tell, Harley does not dowel the pump since the newer TC's can have runout on the crank. The area of the crank with the two flats on it that drive the inner rotors of the oil pump are a loose fit. So hence, if you snug it slightly and turn the motor (using rear wheel) the crank shaft will bump the inner rotor and align oil pump so the inner rotor does not bind it to the outer one. However, the service manual shows using the two threaded studs with the angles on the stud like a pointer. Any machinist knows centering off threaded holes is a sorry way to center anything. When you screw the centering studs in, are they in a clearance hole in the cam plate and only touch the oil pump.. If the threaded holes are true to the crank pin, why did Harley not dowel it?
page 7 of this shows using the alignment pins.
Do you really need the gear locking tool to break the sprocket bolt or torque it if motor is in gear?
http://harleyhog.host.sk/tensionerinstall.htm
page 7 of this shows using the alignment pins.
Do you really need the gear locking tool to break the sprocket bolt or torque it if motor is in gear?
http://harleyhog.host.sk/tensionerinstall.htm
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From: Ottawa, Ontario
Old thread, I know, but I've never used any special alignment pins. I just follow the procedure listed in the manual. Install the bolts loosely, rotate the tire slowly, snug them up.
Another example of a solution for a problem that doesn't exist. But if it gives a person piece ofmind, what the heck, alignment pins are cheap.
Another example of a solution for a problem that doesn't exist. But if it gives a person piece ofmind, what the heck, alignment pins are cheap.
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From: backwoods
I am wondering if a cam plate from 96" will fit 88. The bearing install tools are different. But not cuious enough, yet, to read the whole thread
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From: San Diego, CA
Yes, you can use a 2007+ cam plate in an 88" (pre 2007) Twin Cam. The only caveat is you would need to use a "conversion" cam to make it work.
Pre 2007 Twin Cams have B148 sized inner cam bearings. 2007+ Twin Cams have size B-168 inner cam bearings.
Standard cams that fit the B-148 sized inner cam bearings won't fit the 2007+ cam plates. Cams for the 2007+ cam plates will not fit the B-148 size inner cam bearings, they need size B-168 inner cam bearings.
A "conversion cam" fits the B-148 inner cam bearings AND will fit the 2007+ cam plates. Andrews, Woods, & Fueling I believe make conversion cams.
There are also a few machine shops that can turn a standard 2007+ cam, into a conversion cam. I've had that done. I had a machine shop turn a later model cam into a "conversion cam". I put it in my 2003 Heritage, along with a 2007+ cam plate. Runs awesome...
Please Note...
What I said above will work for any family of Twin Cam engines except for the 2006 Dynas. The Dynas got the bigger inner cam bearings and better cam plates in the last year of their 88" Twin Cam engines in 2006. All other models didn't get the bigger inner cam bearings and better cam plates until 2007 with the 96" engines.
Last edited by hattitude; Apr 28, 2025 at 06:14 PM.
in new to twin cams Ive only had carb evo motors in the past
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Yes, you can use a 2007+ cam plate in an 88" (pre 2007) Twin Cam. The only caveat is you would need to use a "conversion" cam to make it work.
Pre 2007 Twin Cams have B148 sized inner cam bearings. 2007+ Twin Cams have size B-168 inner cam bearings.
Standard cams that fit the B-148 sized inner cam bearings won't fit the 2007+ cam plates. Cams for the 2007+ cam plates will not fit the B-148 size inner cam bearings, they need size B-168 inner cam bearings.
A "conversion cam" fits the B-148 inner cam bearings AND will fit the 2007+ cam plates. Andrews, Woods, & Fueling I believe make conversion cams.
There are also a few machine shops that can turn a standard 2007+ cam, into a conversion cam. I've had that done. I had a machine shop turn a later model cam into a "conversion cam". I put it in my 2003 Heritage, along with a 2007+ cam plate. Runs awesome...
Please Note...
What I said above will work for any family of Twin Cam engines except for the 2006 Dynas. The Dynas got the bigger inner cam bearings and better cam plates in the last year of their 88" Twin Cam engines in 2006. All other models didn't get the bigger inner cam bearings and better cam plates until 2007 with the 96" engines.
Pre 2007 Twin Cams have B148 sized inner cam bearings. 2007+ Twin Cams have size B-168 inner cam bearings.
Standard cams that fit the B-148 sized inner cam bearings won't fit the 2007+ cam plates. Cams for the 2007+ cam plates will not fit the B-148 size inner cam bearings, they need size B-168 inner cam bearings.
A "conversion cam" fits the B-148 inner cam bearings AND will fit the 2007+ cam plates. Andrews, Woods, & Fueling I believe make conversion cams.
There are also a few machine shops that can turn a standard 2007+ cam, into a conversion cam. I've had that done. I had a machine shop turn a later model cam into a "conversion cam". I put it in my 2003 Heritage, along with a 2007+ cam plate. Runs awesome...
Please Note...
What I said above will work for any family of Twin Cam engines except for the 2006 Dynas. The Dynas got the bigger inner cam bearings and better cam plates in the last year of their 88" Twin Cam engines in 2006. All other models didn't get the bigger inner cam bearings and better cam plates until 2007 with the 96" engines.
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Joined: Sep 2008
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From: San Diego, CA
I believe any time you change the air flow through an engine you SHOULD retune. Some will argue it is not NECESSARY to retune with just a Stage I (high flow air cleaner & exhaust).. That debate will go on forever...
I am unaware of a competent HD mechanic or shop that wouldn't consider it MANDATORY to retune when changing the cams.... Not only for the safety of the engine, but also because there would be no point to spending the money on cams, and then NOT doing a retune. New cams + no retune = Bike running like crap (in almost all cases).