Drunkn Munky wrote:Excellent work, tell me more about the BDK reace alternator, i thought they were yamaha specialists?

Yep - this is specifically for the NC30/35. Mike N put me onto them. Real nice bunch of guys; I think it was around 450 pounds which was roughly the cost of a GSXR setup. Tiny rotor that weighs next to nothing and the rest of the kit gives you all the wiring + a matched connector block so You don't really need to butcher your old stator. It is handy to have a couple of spare grommets though to fit over the wires and seal the cases as they don't come with it.

Obviously will weigh more than total loss, but I don't want to go total loss again as it just kills the battery if the bike requires any kind of cranking to start.

Thanks, just found it on there website and looks a proper trick piece of kit. Something else to add to the shopping list

How did the new motor go Luke did you give it a run at the last round???

Still sitting on my bench.

Had a bit of a shit weekend actually, so I haven't got round to posting a report yet. Only managed 1.5 laps on the practice day. Did the first race, but had to revert back to the old carb setup and then Mark's accident happened and so I didn't race on Sunday.

It's pretty much built now - Just waiting on some new valve shims from OZ and to get it timed up correctly, and then it'll be good to run in!

With the winter series only a couple of weeks away, I have pretty much resigned myself to the fact the engine won't be finished and in the bike for round 1. Aside from rebuilding the various bits, I will still need to build the whole top end with both sets of cams to measure the valve clearances and order all the necessary shims. In the meantime, I rub down and spray the heads and the last of the case covers. If/when I build the next NC30 engine, I think I'll just leave them bare. The paint job looks nice, but not really needed on a race motor!

Painted heads and case covers:


Evapo-Rusting the water pump impeller:


Fitted the HRC oil cooler and starter motor:


Rebuilt the clutch with fresh plates and springs:


Lapped in all the valves using a medium and fine lapping compound


Re-fitted all the valves with fresh OE seals


New head gaskets and re-fitting the heads


I started trying to degree the cams in. The HRC grinds aren't slotted, so wanted to see where the lobe centers would be if they were installed as is. Had a nightmare of a time trying to get a dial indicator in and sitting on the valve keeper, without being disturbed but the cam itself. In the end I switched to a feeler gauge and measured a given valve clearance on valve opening and closing. I got back lobe centers of 102 degrees which is 3 degree's advanced from what Colt Cams recommended (105 in. and ex.) so I'm going to need to slot the cams. This turns out to be way more complicated on these little V4 gear-driven cam engines than I had expected!





So, while iI figure out how to get the cams slotted, I decided to fall back to using the RVF cams (which are slotted!). Installed all 8 camshafts to check clearances and order shims. With the gear towers and cam carriers shimmed up 0.5mm to correct for the head skim, it was pretty reassuring to discover that the shims required for the RVF cams were pretty much what I already had, +0.5mm. All the numbers in that respect are bang on, though I will have to recheck my squish clearance with both sets of cams once the shims arrive.

That engine looks far too goood to use, the black on silver does look good.

Do you need any more pics of the HRC cams i have in location? im no expert when it comes to these things but im certain mine are not slotted.

Drunkn Munky wrote:That engine looks far too goood to use, the black on silver does look good.

Do you need any more pics of the HRC cams i have in location? im no expert when it comes to these things but im certain mine are not slotted.

Nope they're not! That's what I was curious to see. When I get the shims back, I can see exactly where they are, but it seems that if you want to convert stock camshafts then as well as the profile change, you'll need to remove and re-press the sprocket (which would have to be really precise) or slot them.

Your Tony Scott spec sheet is awesome! I keep referring to it for meaningful info on the cam timing and clearances. The guy who ground the cams said to install the HRC cams with 105 lobe centres, but that is really going to be pushing the squish clearance unless you machine the piston tops. I noticed that the HRC pistons have deeper valve cutouts, so I'm wondering how feasible it is to run the cams without the pistons (and therefore the kit rods etc.). I'll be able to do some more accurate measuring, but it will be really handy info for those who want to get their stock cams reground as by the looks of things, they won't just drop in.

2012 VMCC Winter Series - Rnd 1

Finally the first round of the winter series is here! I didn't get the engine finished, but do have the new FCR's on and tuned in to test out. It is a 2 day race meeting with 5 races, so getting a good score here will be crucial for the championship! We are running the new pre89-F3 class which should make things very close up at the front. From the entry list, there are a few more NC30's on the grid this year, which is nice to see.

Friday practice

It is my first race meeting without my van and I'm lost. I hire a trailer from a garage, but it takes me forever to get everything loaded up and safely tied down. I arrive at the track at lunchtime which only gives me a couple of sessions! On the outlap of my first session with the FCR's and the bike won't rev above 5k. I limp round to a service road and give it some full throttle blasts. It now pulls to the redline, so I'm wondering if there was just gummed up jets from not being used for 6 months. I head out in the very next session but it is clear from a single lap, that I won't be able to race with the FCR's tomorrow without getting used to them. I swap back to the HRC spec CV's but because they are dry, it takes a bit or cranking to get the bike started! This kills my battery (I hate total loss!). Get the bike going for the final session of the day, rush out and nobly make 3 corners before it start stumbling. I suddenly remember not switching on the fuel tap, but by the time I get it on, the bike has stalled and there isn't enough juice left in the battery to start the bike. Only managed a grand total of 1.5 laps for the entire session, but at least the bike is running well now.

Sat Qualifying

Still not used to being on the bike since having 6 months off. We only get 4 laps qualifying including the outlay, so I don't hang around and just start trying to get back into it. It doesn't seem fast, but I guess everyone else is in the same boat as I end up about 11th on the grid or 3rd in my class!

Race 1

Get an ok start, but I'm way to cautious through the first few corners and get mugged. Over the next few laps, I retake a few guys, but the 2 riders I'm really interested in are already a few seconds up the road. Have a bit of a quiet race except getting passed by a crazy new rider on a FZR1000. His lines are a bit unpredictable, so I just ease off slightly for a corner or 2 and let him go. When I pick up the timesheet, I finished 3rd in F3! Looking at the lap times, there is not much between the top 5-6 riders, so it is going to be an interesting season.

Race Video:
https://vimeo.com/41690882

Then in the end of the 2nd F2 race, there is a really horrific accident and tragically, Mark Brehaut #67 lost his life. I knew Mark pretty well. We both started racing at the same time, in the same class and had followed each other's racing ever since. Mark was a great guy who supported a lot of charities, built a great team and was really having fun out there, especially this year; his first season in F2. He really will be missed. RIP #67.

I decided to pack up and head home as I didn't want to race the next day. It just hit a little to close to home and I wanted a bit of distance from the sport. I'll hopefully be back for round 2 with the new engine, but I'm now fairly behind in the championship.

Nice video! Couple of close shaves at 02:10 + 04:38! Looks cracking fun and hope to get involved in that kind of thing one day!

Really sorry to hear about your friend, that's awful, unfortunately the most fun things in life are usually the most dangerous. Wish you luck with getting your engine sorted and a good result for round 2!

So you have a quickshifter on your bike? What setup do you drive with
the FCR's?

Michael