I'll get a cert eventually. But for now it's pretty simple to get a wof. Just remove SC belt, remove intake manifold and connect carb back to head. Take it in - they can't fail me on a supercharger fitted if it's not connected up. This is what I did just the other day.  

Yes I agree best to keep it legal if you can.

Sorry for the late reply Denny.. I've been so busy boosting around on my bike that I haven't been back to the computer for a while to make a post.

Yes the engine is still in one piece.. I haven't put that many kms on yet as it's been winter here in New Zealand.

I have no idea about Oil temps yet as I haven't gotten around to putting a temp gauge on.

The main thing I've been doing is solving the lean-back fire problem in tuning. Every time it make a pop from being lean it would blow a hole through the silicon joiner in my manifold. This has been solved with the addition of a relief valve set at 25psi to let the pressure vent out if it backfires.

Currently it's running pretty good.. so good I'm reluctant to try and tune it more.. although I know it's still a bit rich at idle.. I'm planning on leaving it until it goes on a dyno and let the experts tweak it.

Once I have some proven performance results I plan on putting together a few more kits to sell to see if anyone is interested.

Here is a photo of SavageBob at work today.. boosting to work on a supercharged savage is probably the most fun commute to work I have ever experienced.

Good to see your progress, and good to see it being done in Godzone. Perhaps if all works out you should take it to the Bert Munro, but more for display than serious racing as I doubt the handling will now match the engine. There are some threads somewhere on the tech section about fitting oil temp gauges.

Imo the EatonM45 is still too big. I used the AMR300 which is perfect size for this motor. It's the smallest SC you can get I believe. Even then, it's not easy to get everything to fit.

The first hard part was probably alignment.. that was painstaking.. mainly because I'm no mechanic or engineer and just cobbling together stuff in my shed.

The carb was the second headache.. I tried 3 carbs before settling on the Keihin CV40 from a Harley. Which works much better than the others I tried (Stock carb's too small, Mikuni round slide lifts under boost, SU too big and heavy and weird.

The third was pulley size.. I tried so many different pulleys to find the size that provides a reasonable 10-15psi.

The fourth was blowing manifolds.. solved with a relief valve.

I'm mostly there with it. My one final problem is a weeping of oil from the SC drive hole. It's a sealed bearing in there.. but they're designed to seal against grease.. not oil. It doesn't leak when it's running.. and it doesn't leak when it's cold. But, after taking it for a run, then leaning it over when it's hot.. the oil slushes to that side of the motor and slowly seeps out a bit. I'm trying to come up with a way to park the bike upright as a easy solution.

Paul how is your big bore motor going? Have you dyno'd yours yet?

Not sure what you want close up pics of?

savagebob wrote on 11/17/14 at 12:30:28:


Not to state the obvious....but a kick stand on the other side would work.  For some reason Trials motorcycles have the kickstand on the other side, and you might be able to adapt one from a trials bike.  Some mount on the swing arm, and it might be as simple as welding some tabs for the mount and spring.

Or....a longer kick stand that doesn't allow the bike to tip over as much.

Thanks for the encouragement. No I am definately not a mechanic, I'm actually a graphic designer and I draw pictures on a computer for a living to be completely honest LoL. We kiwis like to cobble together stuff in our sheds, it's how we roll over here.

Denny I do think you'll still find the M45 too big.. it's designed for a 1000cc and the savage is only 650. I know that's what Rno's Slick Chick used.. but to be honest I've talked to the guy from Rno and I'm kind of dubious that the bike runs very well at all to be honest. I think it's more of a show piece..

The AMR300 that I used is from a Subaru Vivio which is 658cc and it's small and light and I think it's perfect.

Kick stand on the other side.. I have thought of that. I wasn't aware Trial bikes are on the other side I might look into that. Otherwise I was just going to bend mine down so it stands the bike upright, and then put a small counter stand on the other side under the swing arm or something.

Another thought would be to adopt a small center stand.  I know somebody else on the forum has one.