Wouldn't nitrous be a little more reasonable path, both cost wise and easy wise?
Mind you, what percent increase in power are you trying to achieve anyway?
You got 29-30 hp stock (thereabouts)
To get a significant increase, you have to tag on 30% extra (10+hp) somehow or it ain't worth doing.
Getting exhaust gas flow to get enough boost powering a turbo would be tough due to the interrupted relatively low RPM pulse nature of our exhaust flow.
puff puff puff puff puff
No extra cylinders firing to make up the pressure gaps, so to speak. That input power side of the turbo is seeing puffs of gas inter-spaced with -- well, nothing. It isn't gonna spin up all that good and the lag effect might be a bit much.
I think getting great performance out of a turbo might be harder than you would think, apart from the high cost, all the custom bent stainless exhaust tubing and the maintenance problems.
Example -- don't turbos require a good flow of high pressure oil for their turbo bearings to survive?
How many PSI do you think you have available at idle for oil pressure on a Savage? Something like 1-2 psi. How much oil pressure does your proposed turbo's bearings require again?
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Getting your 30% from nitrous would be straight forward enough I suppose, but such a large piston top area would have a tough time conducting away all the extra heat (a long long way from piston center to cylinder wall). Fairly large shots of nitrous has been called "playing a blow torch on your spark plug" and allowances must be made for plugs and other heat related matters if you are running a significant charge of nitrous.
Still, there are ceramic piston top coatings that could help with piston burn through and there are special spark plugs available for nitrous use. Alcohol and water injected with the charge can actually calm the blow torch effect to a very large degree, required if going over a mild nitrous charge on a big single like ours I would judge.
Spark voltage can be an issue with nitrous if you have marginal spark power -- nitrous "blows out the spark" as they say.
(me, I dunno -- I just read all this stuff in nitrous books at Barnes & Noble as I dream my own little dreams)
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Next question would be "when would you want to use this extra power?" So far no full Frankie bike has ever made it to the Dragon after 3 full years of Dragon runs. I got no competition for what I have now.
I find I have all the power I need to ever use now, with the Stage 2 cam -- it is always available and it (so far, knock on aluminum) hasn't pushed my bike past the Frankie point into unreliability.
When my compression finally gets tired, I can go larger and higher compression on the next piston and start popping the dime for premium gas, until then I burn regular gas and just keep zooming along.
Plus there is nothing showing on my bike to scare off a Hurley (bottles and turbos tend to do that you know). Killing Hurleys two at a time on mountain roads is an artform you know, it requires them to ASSume they can catch you relatively easily. They won't try you know, not without thinking you are easy meat and just cranking on down & doing it.
Fat old Grandpa riding on a little single cylinder grandma bike -- that's just too tempting to ignore.
(and they don't, they go for it)
Lastly, my shoulders are starting to go (scraped rotator cuffs and arthritic joints) and it looks like my Hurley baiting days are gonna be numbered by mother nature soon enough anyway.
By the time any of you new guys actually put your super scoots together and make it to the Dragon I may be out of the competition anyway due to simple aging.
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