Police 103" questions : V-Twin Forum: Harley Davidson Forums

MTFLHP · 03-12-2009, 08:20 AM

I have read most of the threads in the Police Forum. Picked up a lot of great information. However, I have come to the conclusion that with a few exceptions, the 103 shares most parts with the production 96. The heads are not SE103's they are production 96 with ACR. The cams are not SE255's, they are production pieces. The static compression ratio is 9.6 for the 103 versus 9.2 on the
96. All of which is fine. My 07 FLHP runs great. Only mod is S&S SPO's. However, I am pretty much ready to swap cams. One thing I have noticed in the Police forum is that there has not been much in the way of discussion of engine mods specific to the Police unit 103.
So what am I looking to do? Improve the species. Am I looking to get it up to Warp Factor 5, Scotty? Nope. Although, it really runs well, this has been stricly with one up riding. This year will be a lot of two up and loaded down riding. What I am planning is the ubiquitious cam swap. Currently sitting on a set of Andrews 37's and a set of 54's. Also have a TMAT ready to go. Originally was going with the 37's but got a good deal on the 54's.
Now, the 37's should pretty much be a bolt in. And they probably will do fine. After extensive snooping, I come to find that the 54's are ground on a slightly smaller base circle. Wanted to reuse stock pushrods, but...after more snooping....someone made a comment that using a Cometic .030 head gasket would let me use the 54 with stock pushrods. Not averse to swapping head gaskets but probably would like to avoid it for time being. Also, most people state that the 54's would work fine with the stock beehives. Not planning on any headwork at this time. Does not mean it would not happen in the future.
So what I am looking for is....what sort of cam swaps have been done specifically to the 07-08 Police 103" motor. Tips? Pitfalls to avoid...37H versus 54H in the factory Police 103" motor? Blah blah blah...etc. etc....Just want to git' er dun before the snow melts.
Just looking for a little guidance and input from those that have been down this road before me. Currently, I have a job but I am not looking to sink a ton of $$$ in this bike right now. Cams this year. Next year....might consider having the stock heads done after a season in the saddle. Input? Thanks!

Neil · 03-13-2009, 12:35 PM

I know you were talking about different cams but I would suggest you check out the Head Quarters web sit. It has a comparrision of of a stock (RH tru duals, SE intake), addition of SE255 cams, and then HQ 500 cams. Nice power bump all the way. Check the bottom of the front page. Good luck.

Neil

696 · 03-14-2009, 08:06 PM

My 2008 103 has a SE Breather, Race Tuner, 211 cam and V&H Oval Slip-ons. Huge improvement over stock but pretty mild, GREAT bang for the buck!!! 92 at the rear, over the 68 stock, 105ft lbs. I'm happy, if this is something you think you might like let me know and we can discuss it futher.

MotoSayle · 04-18-2009, 03:43 PM

The only reason the compression ratio is higher, is because the bore is bigger.So ,I think you are right about stock 96ci cams and heads(with acr)

Mtclassic · 04-18-2009, 04:27 PM

Quote:

Originally Posted by MTFLHP

I have read most of the threads in the Police Forum. Picked up a lot of great information. However, I have come to the conclusion that with a few exceptions, the 103 shares most parts with the production 96. The heads are not SE103's they are production 96 with ACR. The cams are not SE255's, they are production pieces. The static compression ratio is 9.6 for the 103 versus 9.2 on the
96. All of which is fine. My 07 FLHP runs great. Only mod is S&S SPO's. However, I am pretty much ready to swap cams. One thing I have noticed in the Police forum is that there has not been much in the way of discussion of engine mods specific to the Police unit 103.
So what am I looking to do? Improve the species. Am I looking to get it up to Warp Factor 5, Scotty? Nope. Although, it really runs well, this has been stricly with one up riding. This year will be a lot of two up and loaded down riding. What I am planning is the ubiquitious cam swap. Currently sitting on a set of Andrews 37's and a set of 54's. Also have a TMAT ready to go. Originally was going with the 37's but got a good deal on the 54's.
Now, the 37's should pretty much be a bolt in. And they probably will do fine. After extensive snooping, I come to find that the 54's are ground on a slightly smaller base circle. Wanted to reuse stock pushrods, but...after more snooping....someone made a comment that using a Cometic .030 head gasket would let me use the 54 with stock pushrods. Not averse to swapping head gaskets but probably would like to avoid it for time being. Also, most people state that the 54's would work fine with the stock beehives. Not planning on any headwork at this time. Does not mean it would not happen in the future.
So what I am looking for is....what sort of cam swaps have been done specifically to the 07-08 Police 103" motor. Tips? Pitfalls to avoid...37H versus 54H in the factory Police 103" motor? Blah blah blah...etc. etc....Just want to git' er dun before the snow melts.
Just looking for a little guidance and input from those that have been down this road before me. Currently, I have a job but I am not looking to sink a ton of $$$ in this bike right now. Cams this year. Next year....might consider having the stock heads done after a season in the saddle. Input? Thanks!

Where are you in Montana? you might be riding my bike LOL.
I think either 37's or 54 would be great. I would really suggest going with the .030 hg. Also the new SE pushrods are very nice worth the money.

route66paul · 04-18-2009, 08:03 PM

Quote:

Originally Posted by MTFLHP

I have read most of the threads in the Police Forum. Picked up a lot of great information. However, I have come to the conclusion that with a few exceptions, the 103 shares most parts with the production 96. The heads are not SE103's they are production 96 with ACR. The cams are not SE255's, they are production pieces. The static compression ratio is 9.6 for the 103 versus 9.2 on the
96. All of which is fine. My 07 FLHP runs great. Only mod is S&S SPO's. However, I am pretty much ready to swap cams. One thing I have noticed in the Police forum is that there has not been much in the way of discussion of engine mods specific to the Police unit 103.
So what am I looking to do? Improve the species. Am I looking to get it up to Warp Factor 5, Scotty? Nope. Although, it really runs well, this has been stricly with one up riding. This year will be a lot of two up and loaded down riding. What I am planning is the ubiquitious cam swap. Currently sitting on a set of Andrews 37's and a set of 54's. Also have a TMAT ready to go. Originally was going with the 37's but got a good deal on the 54's.
Now, the 37's should pretty much be a bolt in. And they probably will do fine. After extensive snooping, I come to find that the 54's are ground on a slightly smaller base circle. Wanted to reuse stock pushrods, but...after more snooping....someone made a comment that using a Cometic .030 head gasket would let me use the 54 with stock pushrods. Not averse to swapping head gaskets but probably would like to avoid it for time being. Also, most people state that the 54's would work fine with the stock beehives. Not planning on any headwork at this time. Does not mean it would not happen in the future.
So what I am looking for is....what sort of cam swaps have been done specifically to the 07-08 Police 103" motor. Tips? Pitfalls to avoid...37H versus 54H in the factory Police 103" motor? Blah blah blah...etc. etc....Just want to git' er dun before the snow melts.
Just looking for a little guidance and input from those that have been down this road before me. Currently, I have a job but I am not looking to sink a ton of $$$ in this bike right now. Cams this year. Next year....might consider having the stock heads done after a season in the saddle. Input? Thanks!

I think that the police heads on the 103 are unmarked SEs. They did recall them and replace them with the same with automatic compression releases. It is the same as to 96, except for the bigger piston. go the Head Quarters site and read about their builds and then to Big Boyz's site and check out the calculators, there are cam compare lists and compression calculators.

histy · 04-19-2009, 07:41 AM

Quote:

Originally Posted by 696

My 2008 103 has a SE Breather, Race Tuner, 211 cam and V&H Oval Slip-ons. Huge improvement over stock but pretty mild, GREAT bang for the buck!!! 92 at the rear, over the 68 stock, 105ft lbs. I'm happy, if this is something you think you might like let me know and we can discuss it futher.

what sort of tyre (sorry- tire) mileage d'yu guys get with the xtra torque n all?

696 · 04-19-2009, 11:36 AM

I'm expecting about 4000..maybe a bit more. My bro that has a 113kit gets about 3000 or so but his has 130 ft/lbs.

jcw · 05-15-2009, 10:40 PM

best thing i did with the 08 was change the gearing......

696 · 05-25-2009, 03:07 PM

Quote:

Originally Posted by jcw

best thing i did with the 08 was change the gearing......

Did you change to 09 gearing??? Front and rear pulleys??
I noticed my 09 police bike had a little more low end grunt. I measured the 09 rear pulley and found it to be 12" (side to side) my 08 is 11 1/2". I was looking to change the rear to a 09.
696

nvfxdwg · 06-14-2009, 10:46 AM

been reading a lot about the (recall?) on the 103's for the acr's... just picked up (about a month ago) a 2007 flhtp and it doesn't appear that it's had the fix done to it.... anyone know if it's just a matter of taking it in to the stealer and getting it done? Was considering just getting the manual one's installed tho, as i'm pretty used to popping them off on the wide glide already, plus they've never failed me... Should I consider getting a couple of lumpsticks thrown in at the same time as I've read some others have done?? looking for some feedback here as ya'll seem to be pretty much "in the know" around this place. thanks, nv