Choke Delete For More Power

[hamster huey]

I was thinking of doing a choke delete. Has anyone has done it and was the performance increase noticeable? I have seen pics of people who filled the holes from the choke after its removed with JB weld but I wonder if the JB gets loose wont it ruin the piston and head? Is there another way to do this? I have seen slider chokes that can be installed that don't impede airflow. The slider chokes are made for the choke delete option.

 

[kryptonite]

i never heard of this and was wondering about it. i have an 813, and it doesn't have a choke. havent installed it yet either

 

[chucked]

I threaded the holes and put bolts in the old holes on my old carb. Only problem I had with this mod is its a PITA to start it cold.

 

[pup1970]

Through years of kart racing and removing chokes from carbs, I have found that red rtv is the best for filling holes. It wont ruin a motor if it does get sucked in. I have never had one sucked in though. You might see a gain in the mid to top end but doubt you will notice much difference unless you have a full mod motor.

 

[kryptonite]

can someone do this mod and post pics? what makes the performance increase? is it the extra air intake from the butterfly being gone?

 

[pup1970]

No pics, but yes, the extra air and less turbulance.

 

[DemonRC]

Several aftermarket companies sell choke plates. Wide open path for air when open and of course choked when closed.

If I were gonna use a choke with an 813 I'd use the aftermarket choke plates since they don't restrict airflow.

 

[Sucram]

I have done it to my baja. But because I did other things like machine a taper into the carb I cant say how much I picked up.


Can be a pain to start too.


Realistically, you will be gaining maybe 10% air flow.


Try it back to back and let us know. If you don't really need to change the tune it didnt really change the power.


I used red 3 bond, cant remember the exact numbers but any good silicon will work

 

[csp1971]

Huey- if you go with an 813, here is some good info on it:


http://www.hpibajaforum.com/forum/showpost.php?p=756971&postcount=1