building up a honda z50 engine

[Nic19]

hey guys i just scored an oldschool z50 and wanna rebuild the tired old engine.

plans are to keep it as quite as possible but get as much power out of it as possible and have a nice revy engine.
i was thinking the following;
75cc or 88cc bore kit
high revving cam
stiffer valve springs
and a bigger carby

what do you guys think?
please add anything you think would help.

btw its just a little side project so i dont wanna blow too much money on it.

[Sam-Q]

I would be happy to port it for you if thats any help to you

so do you have a workshop manual for it?

[Nic19]

Na I don't. I'm gonna go see this guy about it. Apparently he has a few of them. Should be able to confirm if it's a complied model and maybe sell me some parts

[Sam-Q]

parts:

http://www.hondatrailbikes.com/catalog/index.php?cPath=48&osCsid=eea912f30a5208927fab3f1f8c52e9f7

manual:

http://cgi.ebay.com.au/Honda-Z50A-Z50-A-Z50R-Z50-R-Workshop-Manual-CD_W0QQitemZ380199865838QQcmdZViewItemQQptZAU_Clot hing_Merchandise_Media?hash=item5885ad8dee

http://cgi.ebay.com/ebaymotors/Manual-Honda-Z50-C70-S90-CL90-CB100-CL100-CB125-SL125_W0QQcmdZViewItemQQhashZitem2c4fab0e54QQitemZ 190315171412QQptZMotorsQ5fManualsQ5fLiterature

http://cgi.ebay.com/ebaymotors/Honda-Z50-S65-XL70-Service-Manual-1965-1999_W0QQcmdZViewItemQQhashZitem518e2389a8QQitemZ3 50277044648QQptZMotorsQ5fManualsQ5fLiterature

[machg]

The guys at Horizon motorcycles in Glenorchy race these things for a laugh, I know a couple of them have done big bore kits, cams etc. Might be worth contacting them if you get stuck.

[matt99]

Nick ill tell you if its a complied model or not.

Put a CT110 engine in. Should come close to bolting up.

[Nic19]

Well get out here and tell me! I need to did a place that make repo parts.

[Sam-Q]

I would be happy to help you adapting a different engine in for a modest rate. Would be funny as if I ported one of those heads, would probably be the smallest thing I ever get to do

[Nic19]

Thanks sam but I would rather not pay for work I can do. I have a crf50 with a 125 in it already.

[Sam-Q]

that's the spirit! keep us updated on the progress ok?

[driftke70]

ive built about 5 of these, just rebuilt a 69 honda z about 3 weeks ago, know them like the back of my hand, have done all the big bore kits and stuff.

anything you want to know just ask, i have 3 at the present.

[Nic19]

Well I'm goNna strip the frame and then start it from scratch. It had the plate behind the head stem between the tank but it's been painted black so I gotta clean all that up and then respray the frame. You got any pics of yours??

[driftke70]

ill go take some in a min

[driftke70]

http://img109.imageshack.us/img109/8455/zfitty1.jpg
http://img20.imageshack.us/img20/2423/zfitty.jpg

[matt99]

Air filter lid looks mighty odd in chrome, should'nt it be black?

You interested in OEM replica tyres for Z50 J's? Might be able to hook you up.

Also I think black grips would look more period correct?

[driftke70]

yeah did the best i could with what parts where there, i still need to fix a few things its only 90% done, the grips are ones i cut off my motocross bike and taped on there till i get a chance to change them, the side plate will change when i find a genuine one.

Still need to put the headlight and indicators and stuff on for rego.

[Nic19]

Matt when r u coming to mine to tell me if mine can be registered.

[driftke70]

what model is it, i can tell you straight away, if its pre 72 it doesnt need a compliance plate, if it is post 72 it will need a plate. if its a z50j and doesnt have a plate you can get one.

[Nic19]

Well the plates have all been sprayed over so I can't tell. Year or model type. Bit it does have brackets off the forks for indicators and light.

[driftke70]

check the frame number man

[Marco]

hey guys, sorry to bring a very old thread back to life. But im looking to buy a z50 in any condition as long as the numbers are legit and i can get a rwc and rego. no one here would happen to know of one lying around going to waste???

[floody]

LOL. Pretty well the entire world knows what compliance plate Z50Js are worth dude ($$$s now even for shitboxes), nobody will hand you one.

You might as well have asked if anyone knew where there was a good Levin GTv notch with a built 20v and coilovers just sitting around taking up space that you could have for a few hundred...

[lil_cons]

Hi mate, I have a Z50J Rolling chassis needs an engine and needs some lighting gear, speedo and exhaust... If your interested give me a buzz before tomorrow because somebody is taking a look at it tonight...
Alex.

0458042937