Joe, thanks for your input and I just got the same message this morning from our Greek friend. I did find a N. American seller of the same ring though. They label it as a compression ring. Wondering if I should order two for my Art piston, or if I need a dedicated “scraper” ring. Edit: Spoke too soo...

https://www.amazon.com/Cylinder-Trimmer-Assembly-Husqvarna-Chainsaw/dp/B07HJ6H61Q Just came across this Husqvarna 50mm piston on Amazon. It lists measurements of the piston, but my Art piston is in the jug and I’m unable to measure it to see if it matches up. Read about someone using an obscure scoo...

I’ve been shopping for the standard Ace 100 rings on Hodaka-parts for over a year..never restocked. I unfortunately don’t think this stuff is getting replenished and am trying to find a workaround. Find it hard to believe that my only options are that or a $115 weed eater piston ring from Greece.

I've just finished breaking in a Wiseco and it works fine, plus it's forged and overbuilt. The ring pins are in a better location IMHO, and there is no piston slap even when cold. In the long run, the bike would be better off with a non obsolete piston in it. At $35 or so for set, you can keep the ...

Howdy guys, back at the Ace 100B. Looking for standard sized rings for my ART piston or one size over. Hodaka-parts.com doesn’t have them, as most of you know. The Caber 50mm x 2mm single weed eater piston ring is ~$110 shipped to Denver, so that’s a no-go. Anyone have some spares? Saw a post from a...

Thought it was going good until today. Over the past month I have replaced all bushings, bearings, gaskets, etc included in the Hodaka Parts rebuild package. Aligned all the internal bits, got the case back together, torqued down the flywheel and clutch. Today I wanted to tackle the piston assembly ...

Oh yeah, some workstation pics! Look how clean

Hi friends! To quote the fantastic The Clash: “I've been beat up, I've been thrown out But I'm not down, I'm not down” I’m back with a vengeance! I wised up and enrolled at the technical college near me earlier this year, and I’m on my way to becoming a certified mechanic. Holy learning, Batman! As ...

Thanks for the tip. The Harbor Freight one is priced nicely but the reviews and your testimony has scared me away. Curious as to which NAPA impact driver you chose- is it one of these manual ones?

https://www.napaonline.com/en/p/BK_7769059

https://www.napaonline.com/en/p/SER1140

Yep, this is why I don’t want to leave the Hodaka world. It’s not just the holiday spirit. Y’all are a world-class group of men and women- incredibly generous, quick to troubleshoot, and even quicker to lend a hand. I hope every one of you out there had a Merry Christmas. Holidays had me away from t...

Thanks Matt. I’m trying to not get discouraged. To me, thinking of engine internals is like trying to comprehend the size universe. Does not compute...yet. I do have the will to learn, albeit I am apprehensive to spend too much money, or unnecessary money. And I take it that exploded diagrams tend t...

Ugh, I’m hoping it’s not my sayonara to old bikes. Trying to decide whether or not to throw in the towel- whether or not it’s financially irresponsible for me to continue dumping money into it. I could do all of this work (and more detrimental, spend all of this money) for it to NOT work. A lot of “...

Hmm, I’ve got some thinking to do this weekend then. At $150 for the engine overhaul kit, $60 for the “correct” fork tool and flywheel puller, $50 or so for an impact driver and snap ring pliers- this is a large investment for a first time engine overhaul. Especially for an engine without piston rin...

Alright guys, I am back with a pressure test that took me about a day and a half to make leak-proof. Won’t hold 6psi for longer than 1 second, and takes about 15 seconds to leak empty. All of my cork gaskets that I made are holding up. I hear it blowing out of my clutch side. I see the bubbles formi...

Ed, that has to be it. A perfect description of my problem. I have consistently drained (leaned over on left side and held straight up) all transmission fluid, replaced with EXACTLY 20 oz, and she pukes up the red stuff 1/10 starts. Even if the issue isn’t my top end, I’m glad I am in there to clean...

Thirdstone, do you have a thread on here on how you made your leak tester? I have the day off work and want to take a crack at it. Mostly curious on what you used for the base there, pictures explain everything else pretty well.

Oh crap. Looking at the schematics, it is clearly situated inside the case but that didn’t register with me. Is this in your opinion worthy of the leakdown test, or are there already telltale signs on the piston and the performance issues I was experiencing that we have a leak? Prior to this project...

Al, thanks for the guidance. I see now that the Super Rat Piston has one ring as opposed to two, though identical specs, gap, clearances, and acceptable wear amount. Ace 90 has a 48mm bore, but 50mm stroke and same specs, gap, clearances, and acceptable wear amount as well. I messaged Terry this mor...

Those look sharp Vic! I went with the black and silver. From photos I’ve seen online of them mounted, the nitrogen canister is generally in the back. Did you have trouble fitting it around the snug exhaust the “standard” way? I didn’t think of that!

Fellas- reading more specs on the Strictly Hodaka site, I see that the Model 93 Super Rat and Model 90 Ace have a 50mm stroke and feature the same ring gap clearance as the Model 92B. Are these suitable replacements? My gut tells me yes? I see standard sizes and a few overbore sizes available.

Thrownchain, I feel a very small amount of groove near the intake side, like a piece of debris made its way in. Not quite George-Clinton-bass-solo-groovy, but we’re in Earth, Wind, & Fire territory. Is very minimal grooving a bore or a hone job in your opinion? thridstone, thanks for the tip. I ...

Alrighty, got my measurements. I measured the bore with a telescopic gauge using the method described above, and took 6 different measurements. 50mm bore. My biggest spot is 50.12mm, but that is still within the max allowable wear. All other spots are hanging right around 50.05-50.1mm, so with that ...

What would my piston and ring options be if I went with a (hopefully) 1st over bore? Seems that piston and ring set would be even trickier to track down.. Again, sorry for the newb questions. I’m late to the top end party, but I brought chips. If no boring is needed and I’m at spec, I think I’d stil...

Thanks for the tip thrownchain! I’ll be sure to pick up some telescopic gauges when I make my Harbor Freight run tomorrow. I watched a pretty helpful YouTube video where the guy made measurements on the x and y axis of the cylinder and at top, middle, and bottom of cylinder for 6 measurements in tot...

Thanks for the advice so far guys! Ivan, it was a long day with a skipped lunch and too much black coffee- I unfortunately wrestled the bottom ring off first. I attempted to pull it straight back and off the track if that makes sense (it doesn’t). I figured the ring would have some flex to it (again...