Damn dude every time i click on a video after googling for some ke100 problem i'm having i come to your channel! Thank you 👏🙌 If you're ever in Asheville NC i'd like to buy you a beer or something as a thankyou
I just put the hc head on with new sleeve/stock bore, custom exhaust, 20 pilot and 85 main with oil injection bypassed you way. Plug br7es that came with head. First plug check was great. Started breaking up on the last ride check plug and half the electrode is melted off. Gonna buy a hotter 5 Plug.
The b7hs plug u recommend is a lot shorter. Would that be my problem may be too far in the combustion chamber? I have to be 7hs plug also that was in my head that I took off
@@2strokeguru I know. Was already like that has a totally different subframe no oil tank so I'm taking my chances. See how long it lasts with me I'm riding it regularly after work I'll deal with it afterwards and modify the new rotary valve
I got my grubby little mits on a G3TR bushmaster. I have heard about the smaller piston pins, is there no substitute that can just be installed when splitting the crank without engineering things up?
@@2strokeguru Did the piston pin diameter change over the years as it was a known fault from what I can gather...? I'm struggling to find a decent source of info on these 69 to early 70's 90/100cc Kawasakis. Any pointers?
Interesting. Why would they move to a low compression, lower efficiency and power? Pretty cool you know all this stuff. Thanks again for sharing. I literally know nothing about engines or motorcycles. Always glad to learn something.
I love it, this guy knows more than Kawasaki, the company that designed and built the bike. If this head was better for road use Kawasaki would have fitted it to the KH100 in the first place...
Working on restoring my Ke100 and your videos are really helping. Wish I could find one of these heads, but I cant seem to find any in the UK for sale.
Thanks. Quick question if you don't mind. I have an early 80s KE and the cylinder is slightly rust damaged from where I let it sit on the floor for a few months. If I get it rebored, will it need to be plated afterwards? I'm not too sure what type of cylinder it has.
yes and if you bore it you will need a oversize piston BUT if its just rust damage and no cylinder damage save money have it replated no need to bore it
Great videos as usual Kevin. I’m having trouble finding fork seals and dust caps for my ‘74 G5 . Will a set for a newer ke work? Thanks very much. Mike
Thanks for your knowledge and info. Getting resleeved and installing the head as I am new and leaned the oil as tank is deleted. Previous owner installed a dirtbike rear subframe welded on. Any idea of the compression ratio increase? Any problems running 87 although Thinking I'll just run 93 as I am in florida and 45 mph roads so wide open most of time. Where can i get bigger jets? Mine has a custom full exhaust from previous owner.
I don't know what the compression ratio is it is a lot higher and you must run high octane damage will accrue to the rotary valve if the Oiler is bypassed getting is done by trial and error to small it will lean out and burn up to big it will be too rich and cause foul plugs and low power
Kevin, thanks for all the videos on the KE100. Both the G4 and G4 engines claim 7.0:1 compression ratios. Do you have any numbers for compression before and after? I did pick up a new head from a 73' and plan on posting my numbers. Currently stock with reading of just over 120. Keep the videos coming!
Kevin Bergeron okay so less air more fuel? And when replacing the piston, would you recommend drilling lubrication holes if the replacement piston doesn’t have any?
I’m having problems getting my (2001) ke100 started, it has great spark and a fresh plug. Freshly rebuilt carb. It runs great after you push start it but takes forever to start. Any tips? Is there a hidden jet in the carb I missed or something? Could it just be not tuned right?
ThatOneLaxKid sounds like carb issues check out my carb videos they help alot if you still can't figure it out what is going on call me I can talk you through it
Kevin Bergeron I watched most of the videos and ended up cleaning the carb again along with the large bass jet in the center of the carb body. Helped it a ton! Thanks for providing all these videos for KE owners!
no re jetting however you will when you build you pipe i am building a pipe as well heres a tip on the exhaust the 50cc 2stroke aftermarket pipe with a little mod will work
kevin Bergeron ok cool what jets would you recommend or does would my altitude determine that and I have an idea in mind I was gonna use a generic 2 stroke 50cc pipe off eBay I've used before on a motorized bike build I did a few years ago. I also have a 6.0 cc combustion chamber head from the build was wondering if that could work as well I have another ke 100 I'd try it on b4 I try it on mine but just curious if it fits would it work. I was gonna use the 50 cc exhaust and buy another ke 100 pipe and cut it about 1/4 way up form the header and cut the same on the 50 cc pipe and just weld the ke header on the 50 cc pipe so it'll bolt right on.
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Damn dude every time i click on a video after googling for some ke100 problem i'm having i come to your channel!
Thank you 👏🙌
If you're ever in Asheville NC i'd like to buy you a beer or something as a thankyou
Baqca Sanke you are welcome I’m happy to help
whoa bro im in Asheville with a ke100, small world
LIL LOSER never heard of it where is that
Yoo Asheville here also with a 74 g4tr 100
Very encouraging,to extract Mack's truck pwr from very bottom end bore of 100cc,nothing is useless
I just put the hc head on with new sleeve/stock bore, custom exhaust, 20 pilot and 85 main with oil injection bypassed you way. Plug br7es that came with head. First plug check was great. Started breaking up on the last ride check plug and half the electrode is melted off. Gonna buy a hotter 5 Plug.
The b7hs plug u recommend is a lot shorter. Would that be my problem may be too far in the combustion chamber? I have to be 7hs plug also that was in my head that I took off
Bypassing the oil injection system will damage the rotary valve
@@2strokeguru I know. Was already like that has a totally different subframe no oil tank so I'm taking my chances. See how long it lasts with me I'm riding it regularly after work I'll deal with it afterwards and modify the new rotary valve
and in the high compression means more heat make sure it has good fins
What is my 78 is it a g4 or like what generation
@@critterproformance1824 regulator compression
I got my grubby little mits on a G3TR bushmaster. I have heard about the smaller piston pins, is there no substitute that can just be installed when splitting the crank without engineering things up?
@@richardwendt9266 unfortunately splitting the case case is the only way to change connecting rod
@@2strokeguru
Did the piston pin diameter change over the years as it was a known fault from what I can gather...?
I'm struggling to find a decent source of info on these 69 to early 70's 90/100cc Kawasakis. Any pointers?
Those were fun to beat on.
Interesting. Why would they move to a low compression, lower efficiency and power?
Pretty cool you know all this stuff. Thanks again for sharing. I literally know nothing about engines or motorcycles. Always glad to learn something.
no they had that cylinder head on the g4 engine its a different family of engines it has a 10 speed trans so the head provided a little extra
I love it, this guy knows more than Kawasaki, the company that designed and built the bike. If this head was better for road use Kawasaki would have fitted it to the KH100 in the first place...
Thank you the reason why they don't use is because hi compression head requires hi octane gas
@@2strokeguru You didn't say in the vid hi octane gas needed to be used for this mod.
@@sonicboove4865 I forgot to in the video this was one of my earlier videos
@@2strokeguru 👍
Working on restoring my Ke100 and your videos are really helping. Wish I could find one of these heads, but I cant seem to find any in the UK for sale.
ebay 1972 trail boss 100 has the cylinder head thank you for watching my videos i am glad to help
Thanks. Quick question if you don't mind. I have an early 80s KE and the cylinder is slightly rust damaged from where I let it sit on the floor for a few months. If I get it rebored, will it need to be plated afterwards? I'm not too sure what type of cylinder it has.
yes and if you bore it you will need a oversize piston BUT if its just rust damage and no cylinder damage save money have it replated no need to bore it
Great videos as usual Kevin. I’m having trouble finding fork seals and dust caps for my ‘74 G5 . Will a set for a newer ke work? Thanks very much. Mike
Hi Kevin great video! Do you know if there is a high compression head for the KE 125?
I don't off the top of my head I will have to research it
Thanks for your knowledge and info. Getting resleeved and installing the head as I am new and leaned the oil as tank is deleted. Previous owner installed a dirtbike rear subframe welded on. Any idea of the compression ratio increase? Any problems running 87 although Thinking I'll just run 93 as I am in florida and 45 mph roads so wide open most of time. Where can i get bigger jets? Mine has a custom full exhaust from previous owner.
I don't know what the compression ratio is it is a lot higher and you must run high octane damage will accrue to the rotary valve if the Oiler is bypassed getting is done by trial and error to small it will lean out and burn up to big it will be too rich and cause foul plugs and low power
John Cheney Dirtbike subframe on a KE? I’d love to see some pics of that 👍🏾
Do you have a list of all the modifications you have done so far?
Not a list I will back on modifications soon
Kevin, thanks for all the videos on the KE100. Both the G4 and G4 engines claim 7.0:1 compression ratios. Do you have any numbers for compression before and after? I did pick up a new head from a 73' and plan on posting my numbers. Currently stock with reading of just over 120. Keep the videos coming!
i swaped the head on to the ke102 build cold i am 181 psi
my engine is bored .020 over and has no carb yet so my guess around 160 -165 psi
i love this head great head 1972 trail boss 100 thats what the head is off of
I put a weirdo piston in my ke100 and Yea it will wheely,with little effort,it goes 55
Kool
Where can I buy points and condenser for 1972 G3.
Ebay.com or partszilla.com
Any advice on adjusting the carb after installing the older style head?? Thanks again for your content 🤠
Richen the air fuel mix
Kevin Bergeron okay so less air more fuel? And when replacing the piston, would you recommend drilling lubrication holes if the replacement piston doesn’t have any?
@@Dane-qf1im no drilling thats for a different application
What bike do you have
it’s a 01 ke100, and drilling didn’t sound right but it’s a wiseco piston and looks different than the one that’s in there,
Would the spark plug hit the piston if I were to use the original one for the 1980 ke100?
Yes it would have to use the plug for the head
That head will give 2hp, 2ft lbs of torque, 17 -19
I don't know what gains are without dyno
My bike is pre igniting with that head
You must use high octane
I’m having problems getting my (2001) ke100 started, it has great spark and a fresh plug. Freshly rebuilt carb. It runs great after you push start it but takes forever to start. Any tips? Is there a hidden jet in the carb I missed or something? Could it just be not tuned right?
ThatOneLaxKid sounds like carb issues check out my carb videos they help alot if you still can't figure it out what is going on call me I can talk you through it
Kevin Bergeron I watched most of the videos and ended up cleaning the carb again along with the large bass jet in the center of the carb body. Helped it a ton! Thanks for providing all these videos for KE owners!
ThatOneLaxKid very welcome many more to come
Low compression
Do you have any of these heads for Sale ? If not can a low compression head be shaved to match that head ?
No sorry and no you can't shave it that low
Thinking of purchasing one of these heads for my bike I've got a 97 ke 100 there 80$ on eBay listing says g4tr is that the correct model
look at the pic make sure it is the hi compression head they came both ways
kevin Bergeron ok thanks
kevin Bergeron would I need to re jet the carb for to compensate for the change or anything like that. Also thinking of building a tuned pipe for it.
no re jetting however you will when you build you pipe i am building a pipe as well heres a tip on the exhaust the 50cc 2stroke aftermarket pipe with a little mod will work
kevin Bergeron ok cool what jets would you recommend or does would my altitude determine that and I have an idea in mind I was gonna use a generic 2 stroke 50cc pipe off eBay I've used before on a motorized bike build I did a few years ago. I also have a 6.0 cc combustion chamber head from the build was wondering if that could work as well I have another ke 100 I'd try it on b4 I try it on mine but just curious if it fits would it work. I was gonna use the 50 cc exhaust and buy another ke 100 pipe and cut it about 1/4 way up form the header and cut the same on the 50 cc pipe and just weld the ke header on the 50 cc pipe so it'll bolt right on.
Kevin, what was the head of a KH100?
Kawasaki trail boss 100
What all was done to the KE that gave 16 ft lbs?
16 ft lbs is the head bolt torque
what mm you reface the head what of high com
I don't that is a factory hi compression head
@@2strokeguru okay thanks
How much more power does it give it?
Hp not sure my guess close to 1 hp gain