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Discussion Starter · #1 ·
I am going to start porting the exhaust port of an extra head I have laying around for my cag. If all turns out good I am going to install it afterwards, I am also about to order the seat panel plastic panel for it also. I am thinking of maybe a reed and a rocket key also. Are those the most bang for the buck? Should I also order a new piston ring set while I will have the head off? Also any other porting I should do? I am going to order from pocketbikeparts.com unless someone else has a better place to order plastics and all the above from.
 

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PB Parts piston & ring parts are alittle high. hkmotos has 44mm ring sets on sale $3.50 and jet kits $6 to $8 shipped go look.
 

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Discussion Starter · #4 ·
So without looking at the hkmotos, I think I will get the seat panel and rocket key and reeds from from PB parts. Are these good bang for the buck parts? I just ported my exhaust port tonight and my carb is ported as well, I did that the other night. I am hoping to see a significant increase with these upgrades, any other recommendations for good bang for the buck at a cheap price?
 

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Don't get the small rocket key for a Cag, get the bigger one for piston port engines like X2-X7 2 stroke bikes have. Have you lightened your flywheel??
 

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Discussion Starter · #6 ·
Why not the smaller one? That's what I ordered... heh. I have not but I have been looking into the different styles, I am thinking of going with a 12 fin? Maybe an 8. I just essentially grind the fins off with like my dremel right? Group them in 2s if doing 12 and if doing 8 cut 2 keep 1 cut 2 keep 1 etc... correct?
 

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There are different number of fins on the flywheels, you have to balance it or take 2 at the magnets and 2 down on the counter weights and every other one.
 

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Why not the smaller one? That's what I ordered... heh. I have not but I have been looking into the different styles, I am thinking of going with a 12 fin? Maybe an 8. I just essentially grind the fins off with like my dremel right? Group them in 2s if doing 12 and if doing 8 cut 2 keep 1 cut 2 keep 1 etc... correct?
Why not...Because EPR says...LOL[j/k]....because the smaller key is for engines under 43cc.....All my engines use the larger key and thats a good thing,,,the smaller key wont be able to handle the stress of an engine with bumped-up compression and advanced timing..

Id go 12 fins....It lightens the flywheel just enough and doesnt sacrifice cooling.............If you have the dremel attachment that looks like a buzzsaw blade....You ues that one....You cut all the way around the fin,,snap it off and smooth the rough spots smooth with same cutter

I mark the ones to re removed with a sharpie.....every third gets removed on an 18 fin flywheel for a twelve fin,,, every other for a nine fin flywheel....For a 6 fin flywheel you do opposite of the twelve fin...A 6 fin doesnt cool the engine efficiently at all and offers alot of extra kickback when pullstarting the engine..Youre gonna need an extra padded glove and a stronger yank to get the engine to pop...........
 

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I looked for my torch and found the propane tank but not the torch attachment... very odd. I don't have a small impact just a bigger one... and no 10mm impact socket haha.
Use a regular socket,,,just wear safety glasses.... It always seems that when Im looking for something exact its incomplete...Then hours later i find the rest somewhere out of character
 

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My impact tools have also ripped the head off the China bolts. The worse bolt problems are the steel bolt into an alum wheel. Also they put alot of thread sealer that's why it hard to brake it loose. Make sure the tool is in reverse before you take the center bolt out. I got some anti seize in a tube and put it threads when it goes into alum, with a SS split lock washer. I also replace all the major bolts and screws w/ Grade 5-8.8 bolts, nuts with SS washers. There is $40 or more in good bolts on just one Cag.
 
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