| Author | Message | ||
     Handbuiltxj |
So I have gotten my 2008 Uly up to 73K miles and the engine seems to be getting tired. I got a good deal on a very clean 2006 with only 12k miles. I wan't to take the best parts between the 2 bikes to build 1 using the 2006 engine. I know to use the 08 forks, that limited steering on the 06 gets annoying at low speed after being used to the 08. Is it worth it to try to bring the 2008 ecm over to the 06 or are there too many differences between the engines? What other parts off a stock 2008 should I put on my 2006? | ||
| Hughlysses |
There’s too much different to make combining an 08 wiring harness and ECM with a 2006 engine practicable. The bottom end of your 2008 engine is considerably improved over the 2006 engine. It’s got a stronger crankshaft and connecting rods, an improved oiling system, a bigger oil cooler, and it’s capable of more RPM. You’d be taking a significant step backwards to use the 2006 engine. You could just swap cylinders, pistons, and heads from the 06 onto your 08 cases, but it might be simpler to just hone and re-ring your 2008 engine and get the cylinder heads freshened up. | ||
| Damnut |
It will not be a significant step backwards at all. You will hardly notice the difference in the power of each engine. While the 08 engine did get some improvements over the 06, you wouldn't be able to tell. | ||
| Ratbuell |
I agree with Damnut - my '06 runs like a champ and at 40k miles I've had to replace the stator once, and I currently have an oil seep at the front rocker box (my own fault, poor warm-up habits before riding). I rode new-to-new 06s and 08s when I worked for a dealer - power is identical. Low-end grunt actually seems BETTER in the earlier motor; I don't like the fueling of the later motors near as much. For the steering sweep? Lean it, don't steer it. But to the point - you can NOT use '08 electronics/wiring on an '06 engine. Sensors are different, plugs are different, data is different, ECMs are different. Move your trees over (TREES, not just the forks - that is where the steering difference is), move any farkles over...and ride the wheels off the '06. | ||
| Handbuiltxj |
i was contemplating rebuilding the 08 while I ride the 06, I have a 130 mile commute and don't want to put the miles on my Harley. The power difference and rideability between my high mileage 08 and the 06 with 1/6th the mileage is night and day. That stutter between 2500 and 3200 on my 08 I never could figure out and am still riding it like that. My 06 with the drummer seems to not have that stutter at all. But damn that fan is loud on the 06. (Message edited by handbuiltxj on November 02, 2022) | ||
| Ratbuell |
My 06 fan has sounded like a dryer full of marbles for nearly 25k miles. I gave up carrying a spare in the topcase, years ago. The stutter/flat spot is what I don't like about the 08 fueling. Your 06 will pull like a locomotive with a drummer (I removed mine because I hated the noise), or with the stock muffler and valve (which I've been running since about 5k miles - I tried the drummer when the bike was new...it sounded cool...but on 1,000 mile trips it got in my helmet and just drove me batty so I went back to stock and haven't looked back!). Put a set of '07 springs inside your '06 forks (07 was a progressive rate spring to combat brake nosedive; 06 are single-rate springs), use the '07 fork fluid level spec...ride...grin...repeat. You may find you like the 06 better. I always have. (Message edited by ratbuell on November 02, 2022) | ||
| Handbuiltxj |
Thank you for confirming about the fan noise, I rode it for the fist time last night since I bought it, (seller had to ship me the keys), and when I got off it, that fan was loud, I figured the person missed the tune when they installed the drummer. I do get the check engine light for the exhaust valve servo if i rev it too fast, so maybe I need to hook up my buelltooth and shut off something in ecmdroid to make it stop looking for it. Back on the topic of switching parts, great idea on the 07 springs, thanks for that idea. If I don't end up swapping the whole front end, I may just do that. If I end up only keeping 1 bike, I will look for a stock exhaust to have on stand by if it gets too annoying on my 130 mile commute. going to register it tomorrow and start commuting on it next week. Anyone know if the throttle body from the 08 with the exponential rotation on the butterfly will swap to the 06 to help make the throttle less touchy down low? | ||
| Ratbuell |
I know the TB's have different sensor setups (TPS, AIS, etc) - not sure if you can swap those from throttle to throttle or not, but I'm pretty sure they don't plug and play. Take the slack out of your throttle and idle cables, and set your idle (the little set-screw cable thingy poking out to the clutch side of the steering head, under the front of the frame) to 1050, and that should smooth things out. It could also be fueling, if you have a drummer and no drummer tune - does your 08 have a stock muffler on it? If so, swap it and see (after a few rides for the adaptive fuel values to kick in) if things mellow out any for you. | ||
| Handbuiltxj |
The 08 is all stock. Dropped different tunes on it but could never get rid of the stutter. I need to put some miles on the 06 to get a feel for her, but now there are issues with the registration preventing me from getting registered because the guy i bought it from never put it in his name now i got to track him back down to do a bill of sale. Ugh. Ordered the cable for tuning because i am tired of playing the bluetooth connect game. I will download whatever tune is on it and compare it to an 06 drummer tune. | ||
| Tootal |
Anyone know if the throttle body from the 08 with the exponential rotation on the butterfly will swap to the 06 to help make the throttle less touchy down low? You can take the cable attachment off the 08 and install it on the 06 throttlebody I believe. If you tune the bottom end a little richer it really smooths it out. My 06 was herky jerky until I tuned it out with ECM SPY. The quick throttle also makes wheelies easier! | ||
| Handbuiltxj |
I may jump back into the tuning of my 08 to try to smooth it out. I am going to do a compression check on both of them soon, just gotta pick up my heat range 9 spark plugs from oreilley and make the time to do it. Still fighting to get the 06 registered. | ||
| Handbuiltxj |
The AFV on the 06 is at 99.7% which makes me think that they did drop the drummer tune on it. I downloaded it last night from the bike and need to upload it to my pc to see how it compares to the drummer tune. I did notice the air box on my 08 has a lot more factory airflow holes that my 06 does. Have yall ever noticed that? I am going to change the oil and sparkplugs on the 06 tonight and run it 130 miles tomorrow and see how she does. May try to log it on the bluetooth module, but my cable comes in tuesday and that should be a lot more reliable. | ||
| Ratbuell |
Yes, the 06 had a more "closed" inner airbox. I opened mine up with a step bit and a dremel. Performance change? Not that I noticed...but the mice love it in the off season! | ||
| Handbuiltxj |
Ratbuell, Thank you for that input, I think I will swap my covers once I iron out the occasional misfire (new thread started on that). The current tune is sooooo beautiful, I don't want to introduce anything new till that gets figured out. Change 1 thing at a time and all. Definitely taking the front end off the 08, the lack of turning radius in parking lots is annoying.... Debating on grabbing the bigger 08 oil cooler but want to make sure the fittings will be the same without possibly causing leaks. |
