Boondocker turbo!!

[Crescent]

News on turbo kits?
How are they performing?
Awfully quiet...

 

[Rush44]

My friend who paid and snowchecked his said the delivery date was pushed back to at least 2nd week of December but he is hoping for sooner. I'm sure some people will be getting them very soon.

 

[more snow]

I am really thinking that the turbo needs to be located much closer to the motor to reduce turbo lag. Large turbo lag will be unacceptable for the type of riding that snowbikes are best at. My thoughts.

 

[goodtogo]

I am really thinking that the turbo needs to be located much closer to the motor to reduce turbo lag. Large turbo lag will be unacceptable for the type of riding that snowbikes are best at. My thoughts.

I think if you ever took a ride in a sts turbo corvette or a mcx nytro you might just throw that idea out

 

[retired motoman]

Still backordered

My friend who paid and snowchecked his said the delivery date was pushed back to at least 2nd week of December but he is hoping for sooner. I'm sure some people will be getting them very soon.

The delivery date has changed twice for SX 450. Not holding my breath yet.

 

[swedenturbo]

I am really thinking that the turbo needs to be located much closer to the motor to reduce turbo lag. Large turbo lag will be unacceptable for the type of riding that snowbikes are best at. My thoughts.

There are different opinions as to what is the most appropriate place for the turbocharger.
KMS performance looks to have a front mount system that works well.

I might be wrong but here is my opinion:
Turbocharging a single-cylinder is a little different than multi-cylinder engines.
The engine delivers pretty powerful but in comparison few exhaust pulses. This is not optimal for the turbocharger. Placed near the exhaust port, the back pressure become excessive.
The solution in this case is to choose a larger turbocharger with bigger exhaust turbine which in turn leads to turbo lag.

By placing turbocharger further back equalizes the exhaust pulses and makes the system more flow optimized. In this case you can choose a smaller turbo charger that boosts earlier and with better throttle response.

My opinion is that you can minimize turbo lag by choosing the correct sized rear mount turbocharger, fairly high compression and if possible, better fuel.

 

[JimBridger]

I was pretty set on getting one until I thought long and hard about it. First off is the price....Spending that much on something that is so machine specific scares me. (if it was half the price I would most-def have one.) Next was the wear and tear on the bike and kit. (cluthches, baskets, transmission, pistons, head gaskets, rods, ect ect...) I still want to ride my bike problem free all summer, and I worry the turbo kit would really cut down on the overall life of the bike. Another factor was the boondocker live tuning... I have such slow reaction times as it is, I couldn't handle a 1/2 second delay everywhere I want to go. Lastly is that It hasn't been proven yet. I'll let everyone else be the test mules for this one.

I'm still very interested in how they will work out and bolt up, so keep us posted!!

 

[1dn5up]

have such slow reaction times as it is, I couldn't handle a 1/2 second delay everywhere I want to go.

well you still have the stock power of the motor before the turbo starts to give you bost so its not like there is going to be nothing there

 

[JimBridger]

I understood it differently than that. And I'm not talking about turbo lag. Yes you still have very similar power on low end but you'll have a delay. In order to have live tuning you are piggy backing your stock ecm. The new "tuning box" then reads the stock tune, makes the necessary adjustments (i.e. calculating boost, temp, density, AFR, ect ect and making changes in timing and fuel) and sends that message to the correct sensors or objects. This is the way I understood it, and why it has a delay. Not sure if I'm right or not, or if it only does it under boost, but it was the was I interpreted it. Someone correct me if I'm wrong, cause I always like to learn.

 

[cr500afx]

I can say from experience there is no noticeable turbo lag on the KMS turbo bikes. I've ridden 4 of them (2 Hondas and 2 KTM's) and none exhibit lag. I'm on my third trouble free season on my KMS turbo Honda's. Ride one and you'll be a believer.

 

[slidewayzm5]

How many hours have you ridden each of the KMS turbo bike's?
What do you do in terms of maintenance intervals? Fuel grade used? What boost level do you run?

I remember chatting with you briefly over Youtube a while ago, but forget a lot of details. The little one was a stock CRF450?

 

[cr500afx]

How many hours have you ridden each of the KMS turbo bike's?
What do you do in terms of maintenance intervals? Fuel grade used? What boost level do you run?

I remember chatting with you briefly over Youtube a while ago, but forget a lot of details. The little one was a stock CRF450?

No special maintenance intervals. I run 100% Avgas. Run 13 pounds boost at 10K ASL. Yes, the little one is a stock 2009 CRF450 ST. Not sure on exact miles, but guess little one has 500 - 700, and big Honda 1/2 as much. I also have a KMS 2013 KTM 450 with around 200 miles on it.

There's also a KMS KTM 500 running around out there and KMS is building a 570 Betg and another KTM 500. So far all KMS builds have been custom in they're Phoenix shop. But now that they have a few bikes and seasons under they're belt they are going to sell bolt-on kits.