Going from 2019 Iron 883 to 2019 Iron 1250

[NGOT8R]

I haven't been on here too often as of late, but that's because I've been working feverishly out in the lab on my latest build. I bought a new 2019 Iron 883 in April, put 257 miles on it and then disassembled it to make it better, stronger and faster. I installed a 1250 kit for now with .560 lift cams from Hammer Perf. CNC ported heads (with bigger valves), from Hammer, an Energy One performance clutch and a complete front suspension rebuild in order to gain some adjustability. As far as exhaust goes, I have chosen the new V&H stainless upsweep 2-1. Here are some progress pics.

 

[NGOT8R]

More pics.

 

[NGOT8R]

A couple more.

 

[TomA]

Looks like fun. Is that going to be your around town beater ??

 

[NGOT8R]

Looks like fun. Is that going to be your around town beater ??

Yes sir it sure is! I'm hoping it'll be a whole lot of fun. The bike was very slow and uncomfortable to ride in stock form, so I decided to rebuild the front suspension, add some trick parts and make it adjustable.

 

[NGOT8R]

Looks like fun. Is that going to be your around town beater ??

Yes sir it sure is! I'm hoping it'll be a whole lot of fun. The bike was very slow and uncomfortable to ride in stock form, so I decided to rebuild the front suspension, add some trick parts and make it adjustable.

 

[hulkss]

In 2003 I built a 2002 Sportster 883 into a 1250. It had a Mikuni carb on it and made 97 hp. I used Buell heads, Nallin racing cylinders and pistons. As a stock 883 it made 45 hp.

 

[NGOT8R]

That's what I'm talking about hulk! I am hoping to tap 100 hp with it. I need to do a little more research on injectors to see if I should increase the size. I'm just not sure if the stockers will be close to the end of their duty cycle when doubling the power level. I still have the 4.2 gps injectors (with 3100 miles on them), from my 2015 SGS and wonder if they will fit and whether I should install them to make sure I get plenty of fuel? Any thoughts? Lastly, how did you like your 1250 and did you get lots of trouble free miles out of it?

 

[hulkss]

If you search around, there are some injector sizing calculators online, sorry I did not bookmark them.

Mine was a 5 speed and I put a Baker six speed in it. It was fun and very quick. It would pull the front wheel off the road in second gear with ease. I only put a few thousand miles on it. No problems with it.