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that's pretty badass. always loved the idea of going boosted on bikes but it's not a common thing from what I have seen. Which bore kit are you getting?

Wondering what the power output would be like with a turbo like this. 200cc bore kit with turbo will just be nuts,
 

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That is going to be a serious project.

I would be very interested to see gains and engine durability. I would imagine there would need to be custom work done with the exhaust manifold and intake piping.

Would you need an intercooler for such a small turbo?
 

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Discussion Starter · #4 · (Edited)
Turbo grom

That is going to be a serious project.

I would be very interested to see gains and engine durability. I would imagine there would need to be custom work done with the exhaust manifold and intake piping.

Would you need an intercooler for such a small turbo?
I know a guy here locally that does custom stainless steel exhaust work and my sister in law runs/programs a CNC laser. That shouldn't be problem getting all the hardware made. The turbo puts out about 5-7lbs of boost from what I've read. Last year i drew up a brake caliper mount for a brembo caliper, gave it to her, she converted it to G code and cut it out of stainless for me. Heres a pic, It works perfectly. The caliper is from a ktm 125 dirtbike. Its a very cool machine. If you can imagine it, it can cut it out. This mount took about 4 hrs to program, 8 sec to cut.

As far as reliability, it's a honda engine so it should hold up quite well, but we will see.
 

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I would be worried about how long that engine would last. Honda engines are bullet proof but once you change it this much with a bore kit and turbo you kind of throw out the reliability along with it. It would be ridiculous, this Grom would fly.
 

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With that much power I would look in to improving the brake system for stopping power. When ever you make anything faster the rule of thumb is to have an upgraded brake system to match up. I would think about double disc and calipers if I was to go this route.
 

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For such a small motor even with the bore kit I wonder how much boost it can handle from the turbo. Tuning it would be the biggest part to make it run at optimal. I would hate for it to have boost lag where the power just comes like a on/off switch. That would scare the crap out of any rider.
 

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I would be worried about how long that engine would last. Honda engines are bullet proof but once you change it this much with a bore kit and turbo you kind of throw out the reliability along with it. It would be ridiculous, this Grom would fly.
Honda engines are pretty reliable even when modded. That's probably why so many Tuners buy Honda.
 

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How much power would you say a turbo kit would add to a 150cc grom at 5-7 psi.

Can't imagine that much power in such a small frame.
 

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How much power would you say a turbo kit would add to a 150cc grom at 5-7 psi.

Can't imagine that much power in such a small frame.
maybe around 5HP? can't see it pushing to 10 but who knows if someone does a really crazy N/A build it just up's how more of the turbo can be used
 

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Discussion Starter · #13 · (Edited)
Power gains

With a new head, exhaust , Efi controller, turbo, the 31mm throttle body, big bore kit (depending on cc) assuming its done right and tuned on a dyno, i believe 25+hp could be possible. The Daytona 190s are putting out around 19hp naturally aspirated from what I've read. I think the gearbox could handle this with heavier clutch springs, but reliability would decrease to some degree as with most race motors. With efi, a turbo should work better than a carb with a draw through system. My biggest concern would be, where all of it would fit? Theres not much room like on a pit bike.

Top speed would depend on gearing, but I'm guessing with 25hp 100mph or more could be done. With the short wheel base and stock brakes it would be a dangerous.
 

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What EFI tuner are you thinking about using? It's still sort of a blank area as to what will work and what wont. 25hp is alot in such a small motorcycle.

I am very interested in your build snakeibf. Post up a thread if you follow through.
 

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hmm i just realized. you are on planetminis arent you! I knew I recognize the name!

This is yours right?


What else do you ride?
 

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Honda engines are pretty reliable even when modded. That's probably why so many Tuners buy Honda.
Lol not to this extent when you start changing the bore and adding in aftermarket turbos on the bike. I understand that Honda engines are reliable with certain modifications but when you get into changes like this. The reliability is definitely questionable.
 

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Just depends what is done really. On bikes performance mods are limited. The usual intake filter, slip on exhaust is manageable but a full exhaust can screw up your day in a long run if you don't have a tune box making the engine run too hot because of flow causing premature wear on the spark plugs possibly even fouling the injectors.

So for a turbocharged Grom I would not mix in turbocharged and the word reliability too close yet.
 

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How much power would you say a turbo kit would add to a 150cc grom at 5-7 psi.

Can't imagine that much power in such a small frame.
5-7 psi is a lot actually for a motor of this size. well that will have to depend on the turbo too. but it would be ridiculous power regardless.
 

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I'd have to chime in on this subject but might I add that it really depends on who you get to do the work and which tuner you get to tune the everything. If everything is done right it should run seamless.

I would love to see it happen a turbo grom would be the next big thing.
 
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