Recent content by eagle

Current status: As I continued engine assembly (clutch side almost complete) I had the drum stuck once again... So I took everything apart again and now I'm starting to do things a bit more methodic. I'm not sure of the outcoming, I'm doing this also to learn something and since I found no...

Alright, thanks for the answer. Shift drum is fine. Its got 0.1mm play but since its only bolted to one side of the case this was easy. I had problems with those knobs on the side of the sprockets to be pushed to hard against the side of the sprockets with the slots before holes and knobs...

I wouldn't expect daytona to put this kinda information in their manuals. 2/10mm means 0.2mm play, I'm not sure it was just a typo ;) but there's quite a lot difference between 0.02mm and 0.2mm play ^^ here's a pic of the gauge setup But I guess I'll leave it as it is now, it feels safer...

I have no idea. But since the case will also warm up and since that aluminium alloy will expand more for sure than the steel sprockets/washers/shims/etc (assumed theyre heated the same amount) play might even increase between the two inner/gearbox casings. On the other hand those sprockets...

Well... I studied precision engeneering... so "excessive" play can mean 5/1000mm ^^ I got proper shims and everything now and was able to actually measure play to give you a better idea. (dial gauge mounted via a magnetic stand on the oilpump). Fitted were: -Crankshaft -primary drive sprocket...

Hi folks! I just wanted to know whats your experience with shimming the 155z to reduce the axial end play of its shafts? It seems to be a bit controversal, I read proper shimming should give a litte less wear/more durability but on the same time this kinda engines seem to need quite a bit of...

I have no idea what it was before coz I only got this gauge since my intake valve broke but kicking it over feels about as it was before, even a bit harder due to the harder valve springs I guess, I did several kicks, BUT with closed throttle... seemes like I'll have to try it again... Valves...

Hi folks! I just rebuilt my engine (zongshen 155ccm) after changing a broken intake valve. I did test compression with a (cheap, analog) gauge and it says about 7bar (~100psi)... Compression ratio should be 11.5 : 1 according to webshops that stock that engine. I did bed the valves with...

Haha, wait... that won't work ^^ So how do I test the setup? Acceleration? Measure the time I'll need from zero to a certain speed? I saw some Koso speedos that do that. I'll contact akunar for specs... only thing I know right now is that it's got 280degs open duration and a higher lift...

Nice! Thanks! Thats more info than I expected. However I guess I have to read a few articles before getting started... So this cam cards tell me when intake and exhaust is opened... reference point is TDC I guess. By installing dial indicators at one valve and check flywheel mark or play safe...

Hi folks! I'm currently working on my ZS155 engine (runnning a oko28 flatslide). Got a akunar cam (midrange) and HD valve spring set on its way. In the meantime I'm flowing/porting the head. Carb is set up pretty much spot on for current setup. Now I thought the next thing to optimize...

hahahahaha ...you're kidding me ^^ And yeah, I'll add a bit more red and white to the bike, I just don't like the excessive bright and colourful stuff... an no, I'm really no emo nor some kind of death metal or whatever maniac ^^

Hey folks, just wanted to share some pics of my ride. It's the latest model stomp KZ (UK) with some ups: -Zongshen 155ccm -OKO 28mm Flatside -Kayaba 36mm USD forks (275mm travel!!) -UFO plastic kit with Metal mulisha decals -replaced EVERY single screw with high grade ones -renthal fatbars...

Thanks mate! Are there CDIs with connections for accelerator pump carbs that have throttle opening sensors to tune the curve? I saw OKO also does CVK replikas, might be a fun project to get one of these running properly...

Thanks for the info! I hope it isn't going offtopic too much but... really? I thought normal stock CDIs would have a rev limiter so they can sell you aftermarked CDIs without them ;-P Interesting to know... So I'll just need to find harder valve springs. Do you know which tuning cams would fit...