I just wanted to point something out I noticed between the before and after Dyno Pulls when I watched the video back. You'll notice I have to open the relief valve a full half turn further in the first test vs the post test before it hit the limiter. Pressure in the system on the first pull was 1923 PSI and on the second pull it was 2382 PSI.
Great video! Would have been interesting to see runs after each step of service to know which has the biggest impact. Pull after new air filter, lashing, valve seats, etc.
I was watching another video you had. You had a driver along with some spacers and washers just for the dyno so wouldn't have any clutch slippage. Wondering where I could get one of these any info would greatly appreciated. Thank you!
Have you ever used a block off plate on the head to isolate the valves when you test for leakage on the LO206? If so, can you recommend a place that sells them? Keep up the good work!
What did you set the lash at after maintenance im pretty sure the intake valve was 90% of the problem on HP these motors only have one cylinder & you cant have any valve leakage or your dead in the water 🥴
I’m new to kart racing and still unsure on what engine I wanna start with…LO206 is what I been looking into getting but done know much on what upgrades are offered
Hey Brennen it's good to hear you've started karting. The LO206 is a box stock class and no modifications of any kind are allowed. Engine comes with just a carb and all you need to get is the accessories like exhaust, engine mount, clutch ect.
The engine in the vid still shows close to 15% but it’s all leaking from the bottom, there ‘s no longer air pouring out the intake. I’d say if you test with the head on 15% max and if you removed the head and had a plate to mount it too you would want 0% loss. For me it’s just a way to identify leaking valves that need service.
If the head is new I would service the top end after the first 2hrs of use (1 practice day and 1 race day). After that initial service you should be good for ~10hrs. My local club runs a 10 race season so I service my engine before race 1, then after race 4 and a final service after race 7. New springs and head gasket at a minimum each service.
Lobe separation angle and overlap kind of go hand in hand. Typically, a smaller LSA will result in HP and torque at a lower RPM. A wider LSA will give you more HP and torque at higher RPM. That's a generalization but basically the how it works.
@@kzspeed1288 The platform when introduced was to be out of the box budget racing. Now it's $1000 builder prepared class. It's the primary reason karting is dying. Not banging on you just the whole evolution of engine rules packages. On a side note I don't have the answer to the problem so I just run opens.
I just wanted to point something out I noticed between the before and after Dyno Pulls when I watched the video back. You'll notice I have to open the relief valve a full half turn further in the first test vs the post test before it hit the limiter. Pressure in the system on the first pull was 1923 PSI and on the second pull it was 2382 PSI.
Yea that's really helpful factor to know also, we should take that into consideration also too.
Great video! Would have been interesting to see runs after each step of service to know which has the biggest impact. Pull after new air filter, lashing, valve seats, etc.
I was watching another video you had. You had a driver along with some spacers and washers just for the dyno so wouldn't have any clutch slippage. Wondering where I could get one of these any info would greatly appreciated. Thank you!
Great video!
Thanks Hamish. I appreciate the feedback!
Great video. Thanks.
Thanks Jeff!
loving the content!!!
Awesome work and thanks for sharing! 💪
Good stuff. Ty
Great video, thanks
Thanks Mark!
Have you ever used a block off plate on the head to isolate the valves when you test for leakage on the LO206? If so, can you recommend a place that sells them? Keep up the good work!
I have not, that would eliminate the leakage from the bottom and give better results.
I have 2 of your KA motors and they are strong. You might see my 206. lol Thanks
great video! awesome work.
Is the valve lash setting the same as your other video?
Thanks
Yes it is.
What did you set the lash at after maintenance im pretty sure the intake valve was 90% of the problem on HP these motors only have one cylinder & you cant have any valve leakage or your dead in the water 🥴
I’m new to kart racing and still unsure on what engine I wanna start with…LO206 is what I been looking into getting but done know much on what upgrades are offered
Hey Brennen it's good to hear you've started karting. The LO206 is a box stock class and no modifications of any kind are allowed. Engine comes with just a carb and all you need to get is the accessories like exhaust, engine mount, clutch ect.
What is exactly a good compression number for the 206
What is considered a good leakdown value for an engine that has good sealing valves?
The engine in the vid still shows close to 15% but it’s all leaking from the bottom, there ‘s no longer air pouring out the intake. I’d say if you test with the head on 15% max and if you removed the head and had a plate to mount it too you would want 0% loss. For me it’s just a way to identify leaking valves that need service.
2% or less on LO206 is considered good
How many hours of racing would you recommend a service like this being done?
If the head is new I would service the top end after the first 2hrs of use (1 practice day and 1 race day). After that initial service you should be good for ~10hrs. My local club runs a 10 race season so I service my engine before race 1, then after race 4 and a final service after race 7. New springs and head gasket at a minimum each service.
@robbinsracing801 wow! Thanks!
Does valve lobe seperation benefit these motors?
Sorry I have no experience with valve lobe separation. Any info you have I’d love to listen.
Lobe separation angle and overlap kind of go hand in hand. Typically, a smaller LSA will result in HP and torque at a lower RPM. A wider LSA will give you more HP and torque at higher RPM. That's a generalization but basically the how it works.
What kind of dyno do you use? I’m looking to buy one
It’s a hydraulic brake Dyno. Built it myself.
Just re-affirmed that this engine platform is way over priced for the performance it provides. Those are some embarrassing numbers for Briggs.
We're making over 9HP. Motor does just fine as long as everyone else is on the same motor.
@@kzspeed1288 The platform when introduced was to be out of the box budget racing. Now it's $1000 builder prepared class. It's the primary reason karting is dying. Not banging on you just the whole evolution of engine rules packages. On a side note I don't have the answer to the problem so I just run opens.
All Dyno's read differently.
@@robbinsracing801 Not that much.
@@4793bigdaddy I can show you the same dyno pull and have it read 50HP
That’s BS B&S