question about the new 103 engine
#31
a trap door air filter assembly. what will they think of next? it is easy to understand why you have to re-jet or retune after replacing a/c or pipes. has there been a test using different a/c to see which one flows the best, or do you reach a point where you just can't flow anymore air because of the size of the throttle body?
All things being equal (which they usually are not) any given Throttle Body will flow a fixed amount at WOT at (and this is important) any given pressure difference across it. One can "assist" matters by smoothing out, and to a certain extent managing the intake and exit from the Throttle Body with the use of things like Velocity Stacks on the Intake and Anti-Reversion designs on the Manifold after the Throttle Body. But as long as you don't have to deal with competition rules that specify a maximum diameter; simply boring the Throttle Body is usually the most cost effective solution.
Last edited by Bluehighways; 12-26-2011 at 11:31 PM.
#32
If you want the 103 to actually earn it's money, you need to do the followng:
Intake
Hi flow mufflers
Cams
Tune
If you're happy with it stock, that's great! Save some money.
If you rode mine ONE TIME, you wouldn't be happy with your stocker anymore....just sayin'.
~Joe
Intake
Hi flow mufflers
Cams
Tune
If you're happy with it stock, that's great! Save some money.
If you rode mine ONE TIME, you wouldn't be happy with your stocker anymore....just sayin'.
~Joe
Last edited by traveler; 12-26-2011 at 11:45 PM.
#33
All this said, most folks do a Stage I for reasons that have more to do with the appearance and the exhaust sound of the bike than for any major increase in performance. But then again; appearance and the exhaust sound are very good, and in fact excellent reasons to do a Stage I!
Last edited by Bluehighways; 12-26-2011 at 11:47 PM.
#34
i did a stage 1 on an '09 and later added cams--more power and noise and way less gas mileage. just got a '12...going to cut the cat out and try the xieds. hoping to cool motor and rider down and not loose much fuel mileage.
#35
I just did the Stage 1 on my 103 specifically to get rid off that cat. I did not need more power really, but I wanted to get rid of all of the heat from the cat and the restricted exhaust. Do not have to many miles on the new setup yet, but looking forward to seeing the difference this spring.
Last edited by NDBadlands4-2; 12-27-2011 at 08:21 AM. Reason: spelling
#36
The 103 and 96 are the same engine....same cam, same everything except for 3 items:
Automatic Compression Releases in the heads
Screamin Eagle Primary compensator
Oil Cooler
The stroke is exactly the same, at 4 3/8. The difference is in a tad bit more bore. The 96 has a rated compression of 9.6 to1....the 103 is rated at 9.2 to 1. So, basically the same.
The Screamin Eagle SE255 cam is the stock cam that comes in the 110 engine.
Very nice addition and well worth it....but it likes compression releases.
For 2012 all touring bikes come with the 103 engine. 103's that are added by the dealer can very, as there are variants you can get with higher compression, hotter cams, etc. "Stage 4" 103 is rated at 10.5 to 1 Compression and uses the SE 259 cam, I believe.
~Joe
Automatic Compression Releases in the heads
Screamin Eagle Primary compensator
Oil Cooler
The stroke is exactly the same, at 4 3/8. The difference is in a tad bit more bore. The 96 has a rated compression of 9.6 to1....the 103 is rated at 9.2 to 1. So, basically the same.
The Screamin Eagle SE255 cam is the stock cam that comes in the 110 engine.
Very nice addition and well worth it....but it likes compression releases.
For 2012 all touring bikes come with the 103 engine. 103's that are added by the dealer can very, as there are variants you can get with higher compression, hotter cams, etc. "Stage 4" 103 is rated at 10.5 to 1 Compression and uses the SE 259 cam, I believe.
~Joe
Last edited by traveler; 12-27-2011 at 11:17 AM.
#37
The 103 and 96 are the same engine....same cam, same everything except for 3 items:
Automatic Compression Releases in the heads
Screamin Eagle Primary compensator
Oil Cooler
The stroke is exactly the same, at 4 3/8. The difference is in a tad bit more bore. The 96 has a rated compression of 9.6 to1....the 103 is rated at 9.2 to 1. So, basically the same.
The Screamin Eagle SE255 cam is the stock cam that comes in the 110 engine.
Very nice addition and well worth it....but it likes compression releases.
For 2012 all touring bikes come with the 103 engine. 103's that are added by the dealer can very, as there are variants you can get with higher compression, hotter cams, etc. "Stage 4" 103 is rated at 10.5 to 1 Compression and uses the SE 259 cam, I believe.
~Joe
Automatic Compression Releases in the heads
Screamin Eagle Primary compensator
Oil Cooler
The stroke is exactly the same, at 4 3/8. The difference is in a tad bit more bore. The 96 has a rated compression of 9.6 to1....the 103 is rated at 9.2 to 1. So, basically the same.
The Screamin Eagle SE255 cam is the stock cam that comes in the 110 engine.
Very nice addition and well worth it....but it likes compression releases.
For 2012 all touring bikes come with the 103 engine. 103's that are added by the dealer can very, as there are variants you can get with higher compression, hotter cams, etc. "Stage 4" 103 is rated at 10.5 to 1 Compression and uses the SE 259 cam, I believe.
~Joe
#40
The better questions would be:
Will the new 103ci engine benefit from a stage 1? Answer: Yes.
The implied question... Does a 96ci engine "need" a stage 1? Answer: No.