Yeah, I misread the last post and thought you had just hit 600, which may have still been on the tail end depending on ring material. NRHS selected/installed the piston ring combo so there's not likely anything wrong there, and without knowing first hand how the motor has been broken-in its hard to say.

I hope you get it sorted out though.

 

Engine was heat cycled and broken in according to NRHS instructions. I was very careful about this. I don't think it is anything to do with the piston and rings but I guess a compression test would confirm that. It runs well and I have noticed no smoke. I have read alot about the oil blowby and that seems the likely culprit. I have read about a lot of people that have had oil dripping out of their air filters, that is not the case for me as I said above there was clear sign of it on the back plate and TB shutter plate. I will keep an eye on it.

 

Just wanted to update. The bike has about 4000 kms since the conversion and is running great and has developed no oil leaks.
I am enjoying the power increase, but now that I am used to the power gains I am wondering what stage 2 heads and new cams would feel like. I think I see a continuation of this thread this winter.

 

Its a night and day difference.........

 

Mine works fine with XP...great thread.

 

do the heads and cams you won't regret it.

 

That's good to know. The literature that came with my SEPST did not mention windows xp.

 

Hi, great write-up. I've done five conversions this far, and by far the most satisfying has been my own 2004 C and my friend's 2011 Iron. I had converted my original 882cc to 1200cc's using dished pistons and 883 heads, and was pretty happy for a while. But then I read about the 1250 kit with CNC machined heads and forged, 15 deg squish pistons from Hammerperf.com This is basically the same as NHRS, Dan Norlin at Hammerperf has worked for and with NHRS for years, and is still doing their heads.

But to cut to the chase: do not hesitate to get the heads and the pistons. Check out my bike at http://www.freewebs.com/iceyviking/

I just got my Supertrapp exhaust and installed it with 18 discs. I had SEII slip-ons and thought they were pretty good, but man, the difference is crazy. I have so far hit 120 MPH with no issues at all, but since not many roads in Norway are suited for these speeds, and my *** would be thrown behind bars for a long time as well as losing my license, I have to go to Denmark or Germany to test top speed. However, acceleration to 60-70 MPH (we get to keep the license if we're caught doing 70 in a 50 zone, even if it is expensive) is a blast.

I got the TC88A ignition, and had the VSS sensor throw a fit almost immediately. When I put the 1200 SE ignition back on the VSS sensor still ****ed up. I ended up reading a couple of threads here, and ran an extra ground cable to the VSS/TSSM, and since then (about 2000 miles) everything has been fine. Exept from a broken (and I do mean broken off) negative battery cable. It snapped off on the engine side, and I had to get a service car to come help me. Two hours of waiting on the road shoulder and ten minutes fix time.

Bottom line: things happen when you start changing stuff on your bike. The battery cable was probably due to more vibration.

Lastly a tip to anyone changing cams, push-rods or anything related to this, like heads and so on: once you've tightened the lifters down, let the bike sit for several hours before attempting to turn the engine over: the lifters need to bleed down. Else it may cause your valves to hit the piston, bending your valves.

 

Update: Almost 7000kms on the engine now and it is running great.

 

My mistake. Be that as it may, the basics are the same, and the only mistake is that there is no longer a cooperation between NRHS and Hammer. I stand corrected, and I certainly didn't mean to insult anyone by implying NRHS has to hire help from Hammer or anything to that effect. IMO NRHS is an outstanding company with outstanding service and products, and the same goes for Hammer. My experiences with Dan Norlin is that he is a very serviceminded and knowledgable person who willingly shares his knowledge and expert advice. As I am sure NRHS does too.

Kind regards