OT: WTB 1979 Kawasaki KE100 Cylinder

Somebody please help me! I need a cylinder for a 1976-1979 KE100. Maybe others fit? I don’t wanna pay massive shipping from Indonesia, for a part that may or may not be any good. Somebody must have something laying around somewhere. I don’t think it matters if it’s cast iron or aluminum, as long as it’s good.

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Re: OT: WTB 1979 Kawasaki KE100 Cylinder

Bumpy

Re: OT: WTB 1979 Kawasaki KE100 Cylinder

Look into G5 100 cylinders fitting. I think they do, but don’t quote me

Re: OT: WTB 1979 Kawasaki KE100 Cylinder

> Ben Whittle Wrote:

> -------------------------------------------------------

> Look into G5 100 cylinders fitting. I think they do, but don’t quote me

I just quoted you.

Good call. I don’t know why i didn’t Think to search for a G5 cylinder. I checked compatibility on Partzilla, and it’ll work great. Exact same part number as my 76 KE100, and interchangeable with the 79 aluminum cylinder. I went back on eBay, and found a good G5 cylinder for $38 + shipping. So for just over $50 it’ll have a good cast iron cylinder, rather than the aluminum.

Now to spend another $100 on a Wiseco piston & rings.

Re: OT: WTB 1979 Kawasaki KE100 Cylinder

Angry Hipster /

That's some smart thinking!

Re: OT: WTB 1979 Kawasaki KE100 Cylinder

Overpriced Parts /

> Seth B Wrote:

> -------------------------------------------------------

> > Ben Whittle Wrote:

>

> > -------------------------------------------------------

>

> > Look into G5 100 cylinders fitting. I think they do, but don’t quote

> me

>

> I just quoted you.

>

> Good call. I don’t know why i didn’t Think to search for a G5 cylinder.

> I checked compatibility on Partzilla, and it’ll work great. Exact same

> part number as my 76 KE100, and interchangeable with the 79 aluminum

> cylinder. I went back on eBay, and found a good G5 cylinder for $38 +

> shipping. So for just over $50 it’ll have a good cast iron cylinder,

> rather than the aluminum.

>

> Now to spend another $100 on a Wiseco piston & rings.

Don’t order piston until you get cylinder it may have been bored out or will need to be bored out to oversize

Re: OT: WTB 1979 Kawasaki KE100 Cylinder

> Overpriced Parts Wrote:

> -------------------------------------------------------

> > Seth B Wrote:

>

> > -------------------------------------------------------

>

> > > Ben Whittle Wrote:

>

> >

>

> > > -------------------------------------------------------

>

> >

>

> > > Look into G5 100 cylinders fitting. I think they do, but don’t quote

>

> > me

>

> >

>

> > I just quoted you.

>

> >

>

> > Good call. I don’t know why i didn’t Think to search for a G5

> cylinder.

>

> > I checked compatibility on Partzilla, and it’ll work great. Exact same

>

> > part number as my 76 KE100, and interchangeable with the 79 aluminum

>

> > cylinder. I went back on eBay, and found a good G5 cylinder for $38 +

>

> > shipping. So for just over $50 it’ll have a good cast iron cylinder,

>

> > rather than the aluminum.

>

> >

>

> > Now to spend another $100 on a Wiseco piston & rings.

>

> Don’t order piston until you get cylinder it may have been bored out or

> will need to be bored out to oversize

Indeed. Seller shows it mic’d out to 49.8mm. I think stock is 49.5. I want to put my good Starrett caliper on it to see exactly where it is. There’s tons of different size pistons available, I see.

Re: OT: WTB 1979 Kawasaki KE100 Cylinder

yeah .3 mm is a common first overbore

you might be able to find an OEM or another aftermarket like SPI or Vertex that is a lot cheaper than wiseco.

i'll buy wiseco for something really nice and racey but usually i stick with the cheap ones... they made KE100's up until the early 00's so it shouldn't be too hard to find shit for them

i would say that if you have the choice to go with a plated bore vs. iron, you're probably money ahad grabbing the plated bore, especially if you plan on keeping it. You won't have to pay to have it bored/honed and it wont wear out as quickly. Plus if you get to the max oversize on an iron bore its junk... plated bores basically last forever and you just replace the cheap piston for this motorcycle stuff.

Re: OT: WTB 1979 Kawasaki KE100 Cylinder

> Graham Motzing Wrote:

> -------------------------------------------------------

> yeah .3 mm is a common first overbore

>

> you might be able to find an OEM or another aftermarket like SPI or

> Vertex that is a lot cheaper than wiseco.

>

> i'll buy wiseco for something really nice and racey but usually i stick

> with the cheap ones... they made KE100's up until the early 00's so it

> shouldn't be too hard to find shit for them

>

> i would say that if you have the choice to go with a plated bore vs.

> iron, you're probably money ahad grabbing the plated bore, especially if

> you plan on keeping it. You won't have to pay to have it bored/honed

> and it wont wear out as quickly. Plus if you get to the max oversize on

> an iron bore its junk... plated bores basically last forever and you

> just replace the cheap piston for this motorcycle stuff.

Unfortunately, a newer aluminum plated cylinder is an EBay Indonesia ~$300 crap shoot. They’re just not available. Iron ones really aren’t either, for reasonable prices. I kinda lucked out finding this one.

Now, if it was a 1990’s B motor, those are more common. But I think they’re different.

Re: OT: WTB 1979 Kawasaki KE100 Cylinder

Overpriced Parts /

> Graham Motzing Wrote:

> -------------------------------------------------------

> yeah .3 mm is a common first overbore

>

> you might be able to find an OEM or another aftermarket like SPI or

> Vertex that is a lot cheaper than wiseco.

>

> i'll buy wiseco for something really nice and racey but usually i stick

> with the cheap ones... they made KE100's up until the early 00's so it

> shouldn't be too hard to find shit for them

>

> i would say that if you have the choice to go with a plated bore vs.

> iron, you're probably money ahad grabbing the plated bore, especially if

> you plan on keeping it. You won't have to pay to have it bored/honed

> and it wont wear out as quickly. Plus if you get to the max oversize on

> an iron bore its junk... plated bores basically last forever and you

> just replace the cheap piston for this motorcycle stuff.

He will never put the miles on two wheels like I used to plus he has several bikes so he should get the second over bore piston and get it bored to that size,

It could be good for anywhere is from 5 to 11k miles due to the low RPM of these bikes,

Kawasaki is my favorite two-stroke enduro and or street 2t bikes they just plain rule,

Had a kh400 from 7K to 14k mi untouched, though the compression was low and a bit harder to start especially in cold weather and pretty sure the the rings/top and was toast still started and ran fine once warmed up, I cried when I had to sell it due to being laid off,

Re: OT: WTB 1979 Kawasaki KE100 Cylinder

> Overpriced Parts Wrote:

> -------------------------------------------------------

> > Graham Motzing Wrote:

>

> > -------------------------------------------------------

>

> > yeah .3 mm is a common first overbore

>

> >

>

> > you might be able to find an OEM or another aftermarket like SPI or

>

> > Vertex that is a lot cheaper than wiseco.

>

> >

>

> > i'll buy wiseco for something really nice and racey but usually i

> stick

>

> > with the cheap ones... they made KE100's up until the early 00's so it

>

> > shouldn't be too hard to find shit for them

>

> >

>

> > i would say that if you have the choice to go with a plated bore vs.

>

> > iron, you're probably money ahad grabbing the plated bore, especially

> if

>

> > you plan on keeping it. You won't have to pay to have it bored/honed

>

> > and it wont wear out as quickly. Plus if you get to the max oversize

> on

>

> > an iron bore its junk... plated bores basically last forever and you

>

> > just replace the cheap piston for this motorcycle stuff.

>

> He will never put the miles on two wheels like I used to plus he has

> several bikes so he should get the second over bore piston and get it

> bored to that size,

>

> It could be good for anywhere is from 5 to 11k miles due to the low RPM

> of these bikes,

>

> Kawasaki is my favorite two-stroke enduro and or street 2t bikes they

> just plain rule,

>

> Had a kh400 from 7K to 14k mi untouched, though the compression was low

> and a bit harder to start especially in cold weather and pretty sure the

> the rings/top and was toast still started and ran fine once warmed up, I

> cried when I had to sell it due to being laid off,

Boy, you’re right about that- I’ll never wear it out. Can’t put the miles on like I used to.

When we were little, I had a (1969?) Yamaha Enduro 60 and my big bro had a ke100. Dad had a Bultaco. We rode all the time. When I was around 12 or 13, I got a 1976 Suzuki TS 125. I rode the wheels off it, until I bought my first car at 15. My Suzuki topped out at 68 mph. My big brother could almost keep up on his ke100. He ended up selling it and getting a ke175.

Re: OT: WTB 1979 Kawasaki KE100 Cylinder

Just curious, how using the g5 cylinder ended up working out? I also have a ke100 with an aluminum cylinder that is scored up pretty badly. I looked into getting it re-nikasil coated by powerseal usa, which is local to me, but it costs ~$200, way more than i initially paid for the bike. I have a g5 parts engine with a cast iron cylinder, but it sits about ~0.25" lower than the aluminum cylinder, causing the piston to interfere with the head and ports partially covered when at BDC. Any info from your research would be appreciated!

Re: OT: WTB 1979 Kawasaki KE100 Cylinder

Oh boy, I dunno! I haven’t tried putting it on yet. I was getting ready to order a piston kit, but I better check that before I do!

Re: OT: WTB 1979 Kawasaki KE100 Cylinder

Let me know how it works out, I was thinking of making an spacer/adapter. I made a preliminary CAD model, but I don't have access to a milling machine with the whole covid-19 thing going down.

Re: OT: WTB 1979 Kawasaki KE100 Cylinder

Pretty sure you just need a matching piston. They had different pin heights

Re: OT: WTB 1979 Kawasaki KE100 Cylinder

Yes! I think you are right. You just have to be careful because the piston I have that works with the cast iron cylinder has a smaller diameter wrist pin than the piston that works with the aluminum cylinder. Maybe the wrist pin hole can be bored out to accept a large wrist pin (ideally these are already manufactured?), or maybe there is a roller bearing that will fit the OD of the smaller wrist pin and ID of the large rod.

Re: OT: WTB 1979 Kawasaki KE100 Cylinder

Ok! Here’s what I found out this morning.

https://www.partzilla.com/catalog/kawasaki/motorcycle/1975/g5-c

That link is the Partzilla parts components page for Kawasaki G5. If you look, there are two different cylinders for them. There’s the early 72&73, then the late 74&75 models. I lucked out and found a late model. If you follow the links to the cylinder, there is a chart that shows compatibility with other years/models. It’s a great feature of Partzilla, even if the part is unavailable. I love their compatibility charts! The late g5 cylinder is compatible with the ke’s.

I double checked the dimensions of mine, and ports too. It’s identical, except it’s cast iron.

Re: OT: WTB 1979 Kawasaki KE100 Cylinder

Awesome, glad it worked out for you! My parts engine is from a 1971 g5, so its got the early cylinder which won't fit on my 1979 ke100. I tried to find an early piston with correct diameter wrist pin, but i dont think they exist. Back to the drawing board to find the correct cylinder or might try to get the 71' g5 engine back in running condition lol

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