Planet Minis

bruce bruce · 10-20-2009, 02:24 PM

Anyone know what the biggest motor that would fit in a 1970 z50 without hitting the front tire?

bruce bruce · 10-21-2009, 04:55 PM

Nobody knows?

reynolds_brad · 10-21-2009, 05:08 PM

I believe a 117.

anything bigger and the cylinder is taller thus stuffing the head into the tire.

you can go bigger if you change out your fort end and increase the tripple offset.

psychomonkey · 10-22-2009, 12:02 AM

Quote:

Originally Posted by reynolds_brad

I believe a 117.

anything bigger and the cylinder is taller thus stuffing the head into the tire.

you can go bigger if you change out your fort end and increase the tripple offset.

dont give all the secrets away.....lol

ive seen honda 50 clone motors as large as 192cc

weekendwarrior · 10-22-2009, 07:15 AM

if you wanna do that, might as well buy a crf 70 or 80

bruce bruce · 10-22-2009, 11:02 AM

So nobody really knows?

T Bolt USA · 10-22-2009, 11:31 AM

Quote:

Originally Posted by bruce bruce

So nobody really knows?

the only difference is the cylinders
the current cylinder 63mm
a 90-110cc (up to aprox 124cc with mods) 69mm
124cc -150cc type motors are 78mm tall (can be much larger with mods)

bruce bruce · 10-22-2009, 01:43 PM

Quote:

Originally Posted by T Bolt USA

the only difference is the cylinders
the current cylinder 63mm
a 90-110cc (up to aprox 124cc with mods) 69mm
124cc -150cc type motors are 78mm tall (can be much larger with mods)

That's what I was looking for. Thanks T-Bolt. I was hoping someone had put a 124 or 150 in a z50 and could say it cleared the front tire.

psychomonkey · 10-22-2009, 05:34 PM

Quote:

Originally Posted by bruce bruce

That's what I was looking for. Thanks T-Bolt. I was hoping someone had put a 124 or 150 in a z50 and could say it cleared the front tire.

it will clear the tire with no problem

freakytikki · 10-22-2009, 10:02 PM

I too would like to see a pic of a large motor in a z50. I have more than a few and have been toying with doing this for while. If anybody has any pictures I would also appreciate it. Thanks for posting. Plus I would like a ride report.

Hardtail

cdoublejj · 10-23-2009, 12:33 AM

Quote:

Originally Posted by freakytikki

I too would like to see a pic of a large motor in a z50. I have more than a few and have been toying with doing this for while. If anybody has any pictures I would also appreciate it. Thanks for posting. Plus I would like a ride report.

hardtail as well or soft tail?

z50 chopper · 10-23-2009, 01:32 AM

what I'd like to see is a z50 hard tail with a same year ct70h engine and see if someone could pass it off as a rare option offered in that year

zeeman · 10-23-2009, 09:38 PM

I have a Lifan 123cc engine in my 1978 z50. It clears the front tire easy, but I am still working on front fender clearance. I'm interested in hearing from others who can help with petcock clearance problems and what kind of exhaust will work. Mine is a manual clutch.

Zeeman

firepower354 · 10-23-2009, 10:13 PM

Quote:

Originally Posted by z50 chopper

what I'd like to see is a z50 hard tail with a same year ct70h engine and see if someone could pass it off as a rare option offered in that year

Z70 decals and all

firepower354 · 10-23-2009, 10:17 PM

Quote:

Originally Posted by zeeman

I have a Lifan 123cc engine in my 1978 z50. It clears the front tire easy, but I am still working on front fender clearance. I'm interested in hearing from others who can help with petcock clearance problems and what kind of exhaust will work. Mine is a manual clutch.

Zeeman

The new TB exhausts should let it breathe. You may have to experiment with manifolds, adapters, belt sanders

to clear the petcock. I had a VM26 on a Lifan 150 in my 79 Z, and it was tight. I ended up slotting the bolt holes to get the angle just right. I used a Tak long manifold. I've got a pretty short Kitaco if you're needing something.

z50 chopper · 10-23-2009, 10:48 PM

Quote:

Originally Posted by firepower354

Z70 decals and all

yup looking a little aged too

firepower354 · 10-23-2009, 10:50 PM

Think "Just For Men" in my beard would help?

cdoublejj · 10-23-2009, 11:39 PM

Terry whats the biggest you've stuffed in Z50, didn't you try a 150 a while back?

firepower354 · 10-23-2009, 11:43 PM

Fit fine. Fender rubed a little. busted my azz on the thing

ratae · 10-24-2009, 01:19 AM

Quote:

Originally Posted by freakytikki

I too would like to see a pic of a large motor in a z50. I have more than a few and have been toying with doing this for while. If anybody has any pictures I would also appreciate it. Thanks for posting. Plus I would like a ride report.

Not exactly a 1970's Z50....................
My old Z50 Gorilla, running a tuned Honda Nice engine. I chose to use the Honda mudguard to keep the 'standard' look to the build , which was trimmed on the engine side and lowered very slightly using spacers so as to miss the nuts on the cylinder head !
Forks are standard Honda .
Wheels are 8" dia x 3.5"width running Kitaco 110/80 tyres. No issues with the engine hitting the head.

10-20-2009, 02:24 PM	#1 (permalink)
bruce bruce PM Newbie Join Date: Aug 2009 Location: Bakersfield, Ca. Posts: 19	Biggest motor in a 1970 Z50 Anyone know what the biggest motor that would fit in a 1970 z50 without hitting the front tire?

10-21-2009, 04:55 PM	#2 (permalink)
bruce bruce PM Newbie Join Date: Aug 2009 Location: Bakersfield, Ca. Posts: 19	Re: Biggest motor in a 1970 Z50 Nobody knows?

10-21-2009, 05:08 PM	#3 (permalink)
reynolds_brad Advertiser Join Date: Dec 2003 Location: San Francisco, CA Posts: 2,719	Re: Biggest motor in a 1970 Z50 I believe a 117. anything bigger and the cylinder is taller thus stuffing the head into the tire. you can go bigger if you change out your fort end and increase the tripple offset. __________________ pecore nere ufficiose Motoshop Z - Honda50.com

10-22-2009, 07:15 AM	#5 (permalink)
weekendwarrior PM Newbie Join Date: Jun 2009 Location: Welland Ontario Posts: 55 My Mood:	Re: Biggest motor in a 1970 Z50 if you wanna do that, might as well buy a crf 70 or 80

10-22-2009, 11:02 AM	#6 (permalink)
bruce bruce PM Newbie Join Date: Aug 2009 Location: Bakersfield, Ca. Posts: 19	Re: Biggest motor in a 1970 Z50 So nobody really knows?

10-22-2009, 10:02 PM	#10 (permalink)
freakytikki 1st Gear Member Join Date: Apr 2007 Location: sf,clearlake Posts: 105 My Mood:	Re: Biggest motor in a 1970 Z50 I too would like to see a pic of a large motor in a z50. I have more than a few and have been toying with doing this for while. If anybody has any pictures I would also appreciate it. Thanks for posting. Plus I would like a ride report. Hardtail Last edited by freakytikki; 10-26-2009 at 11:24 PM.

10-23-2009, 01:32 AM	#12 (permalink)
z50 chopper 2nd Gear Member Join Date: Jun 2009 Location: Nanaimo, BC, Canada Posts: 504 My Mood:	Re: Biggest motor in a 1970 Z50 what I'd like to see is a z50 hard tail with a same year ct70h engine and see if someone could pass it off as a rare option offered in that year

10-23-2009, 09:38 PM	#13 (permalink)
zeeman PM Newbie Join Date: Oct 2009 Location: Cartersville, GA Posts: 19 My Mood:	Re: Biggest motor in a 1970 Z50 I have a Lifan 123cc engine in my 1978 z50. It clears the front tire easy, but I am still working on front fender clearance. I'm interested in hearing from others who can help with petcock clearance problems and what kind of exhaust will work. Mine is a manual clutch. Zeeman

10-23-2009, 10:50 PM	#17 (permalink)
firepower354 Advertiser Join Date: Oct 2006 Location: Flint MI Posts: 11,005 My Mood:	Re: Biggest motor in a 1970 Z50 Think "Just For Men" in my beard would help? __________________ If it has my name on it I did it;) FirepowerMinis.com Custom FPM parts and engines. Parts and service for all makes. Honda Trail Bikes parts and accessories. Pitster/Piranha/Thumpstar bikes, parts, engines and accessories.

10-23-2009, 11:39 PM	#18 (permalink)
cdoublejj 3rd Gear Member Join Date: Oct 2008 Location: St.Joe MO Posts: 1,371 My Mood:	Re: Biggest motor in a 1970 Z50 Terry whats the biggest you've stuffed in Z50, didn't you try a 150 a while back?

10-23-2009, 11:43 PM	#19 (permalink)
firepower354 Advertiser Join Date: Oct 2006 Location: Flint MI Posts: 11,005 My Mood:	Re: Biggest motor in a 1970 Z50 Fit fine. Fender rubed a little. busted my azz on the thing __________________ If it has my name on it I did it;) FirepowerMinis.com Custom FPM parts and engines. Parts and service for all makes. Honda Trail Bikes parts and accessories. Pitster/Piranha/Thumpstar bikes, parts, engines and accessories.

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