1979 Puch Magnum Project Part 9 - Treats 70cc Reed Kit / Mikuni VM 20 / Engine Mounting

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First of all, I owe a HUGE Thanks to Benji at Treatland for going out of his way to help me out with this.
Video covers Installing the Treats "puch 70cc 45mm reed valve kit especiale",
www.treatland.tv/puch-70cc-re...
Puch Polini Reed,
www.treatland.tv/puch-polini-...
Rear facing Weakends Puch Reed kit VM intake,
www.treatland.tv/WEAK-ENDS-in...
And a Mikuni VM 20mm Round Slide Carb.
www.treatland.tv/mikuni-20mm-...
I set my ring gap at just a slight drag on a 0.007" feeler gauge for the upper ring and slight drag on 0.009" for the lower.
I chamfered my ports a little with a dremel to prevent the rings catching, but no case matching.
Here are the Moped Army pages that I used -
Kit Install
www.mopedarmy.com/wiki/Install...
Ring Gap
www.mopedarmy.com/wiki/Ring_gap
Last part shows attaching exhaust studs and Kickstand with spring and finally mounting the Engine in the Frame.

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26 сен 2013

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Комментарии : 62

@JasonTylerRicci 10 лет назад

I'll be watching this regularly as I rebuild my ZA50 top end. Exceptional video.

@ricardospanish2329 8 лет назад

Nice job, I think what I love the most is you work so clean.

@carljohanalsing 10 лет назад

can´t wait to se it run! Great videos!

@JMartinhomestead 10 лет назад

i like how carefull you are about everything its insane! lol. when i work on cars i dont wear gloves when using brake clean or nothin and i do this as a profession.

@aleksandersashev3096 10 лет назад

great video, i've enjoyed every minute of it, such precision and gentle touch to the parts. i'm impressed :) really really good work :)

@n1bpd 10 лет назад

Thanks!

@tubularson 9 лет назад

Well done. Thank you.

@davidwarner6755 Год назад

Puch ASMR

@n1bpd 10 лет назад

I'll probably have it running within a day or two, but wont be finished for a while as I dont have much time to work on it. I had hoped to have it finished well before the end of summer... but that obviously isn't going to happen.

@mariogeis9558 6 лет назад

Nice Carbu

@n1bpd 10 лет назад

Yeah its just 2 stroke Oil (the same non synthetic I'll be using in the first tank of gas during break in).

@smokestone20 6 лет назад

Now that is a lesson. Worth an A+

@jannovak8481 4 года назад

This is a real theatre!!! Impressive and great by one word. Have you ever thought to do it with SS50? looks almost the same (Monza tank, frame, wheels) but 4 stroke. That's I wanna know if you took Magnum as some historic link or availability. Anyway fantastic job at all nitty gritty details.

@joebrubaker164 10 лет назад

I have a tomos a55 lx. Question what were u filing the listing gaskets for? Do the carbon fiber reeds actually help that much? Is porting basically dremil tooling the engine manifold exit hole so the ID of the air intake matches the the OD of the top of the exit hole? Does the hole affect anything else other than airflow?

@bouchercm8 8 лет назад

Did you ever find out if you had any air leaks? With that kit, carb, and exhuast I would think you would be around a 160 main and a 22.5-25 idle.

@djsiyreful 9 лет назад

I order all the exact parts you used for your set up. I bought the same carb as well. Can you please tell me what exact jets, needle sizes you used on your carb? I would like to know so I can tune the carb since I have never used or tuned a Mikuni

@kingworm859 4 года назад

Buen video, que tipo o modelo de cilindro es ese, o como o donde puedo buscarlo o conseguirlo

@dannywalker9288 6 лет назад

I know it’s an old video... but I tip my hat to you, great detail. Can I ask what the blue stuff is in the syringe?

@n1bpd 6 лет назад

It's just 2 stroke oil, using it as assembly oil.

@yvesweber7760 6 лет назад

What ist this for a Oil ?

@danielmeyers3718 10 лет назад

So noob question here...But What's the blue stuff in the syringe you're lubing it up with? 2 stroke oil?

@martijn2661 10 лет назад

What are you doing with the metal strips and sandpaper

@n1bpd 10 лет назад

If its the part I think you mean, I'm setting the ring gap on the piston rings - They expand when the engine runs and can end up touching if the gap is too narrow when cold. The sand paper is to make the gap a bit larger, the metal strip is just a backing so I dont round off the end I'm sanding. If thats not it - let me know the time in the video for the bit your interested in.

@frankjackson6723 9 лет назад

How big is too big for the ring gap? I've got a 70cc Polini kit and both the rings came stock at 14. Thanks. Your attention to detail is extremely refreshing btw!

@n1bpd 9 лет назад

Frank Jackson The ring gap page on Moped Army I used (link is in video description) says that it depends who you ask - no hard and fast rules there. I'd probably just go ahead and install them. Perhaps send Benji/Treats a message through their website and double check. They reply very promptly.

@stevetaylor7250 5 лет назад

They used to reckon 4 thou, (0.1mm) per inch of bore for aircooled engines 38 mm = 1.5" so maybe 6 thou or 0.15mm which I guess is the 14 mentioned above.....

@voicesonair 10 лет назад

When do you think you will get it running? I have the same ped with 372 miles...

@RourkeKendrick 9 лет назад

Do you need to chamfer the ports on the non reed valve version of this kit? Thanks

@n1bpd 9 лет назад

RSK RC All 2 stroke cylinders should be checked and chamfered if it hasn't been done already (probably wont be). It will reduce the chance of a ring being caught on the ports.

@alanblake7217 9 лет назад

Which head did you use for this kit? Low, Hi, or Hi Hi compression?...and how did the squish band turn out?

@n1bpd 9 лет назад

I used the Hi Hi head. I ended up just checking to make sure the squish was sufficient so there wouldn't be any contact of the piston when I put it on the motor. I didn't adjust it at all (because I forgot) and that was with the stock gaskets so its probably a little too large.

@erikwiduch6711 9 лет назад

building this on a tomos a35 should I still shave the rings like u did in the video? should i do them to the same sizes u used

@n1bpd 9 лет назад

There are standard ring gaps depending on the bore of the cylinder. You can get that information at www.mopedarmy.com/wiki/Ring_gap

@willybikes9565 8 лет назад

please, one video of embreage of hero pucho 65 c.c

@mortonmorton6083 3 года назад

I'm looking for a bigger bore kit for my califfo 50cc 60to70 kit does anyone make them ?

@georgestephenson6255 5 лет назад

What are the liquids that he is dipping the cylinder into at 19:33 and the next one at 20:02 ?

@kyrox_official 3 года назад

Water lol

@Nickcrossgopro 10 лет назад

What did you torque the head nuts at? in foot pounds.

@n1bpd 10 лет назад

7 foot lb Incase you needed it, theres a service manual available at projectmopedmanual.info/Manual_HTML/puch.html And www.mopedarmy.com/wiki has a bunch of information too. I used both sites when rebuilding my e50, as I had never owned one before I got the Magnum.

@erikwiduch6711 9 лет назад

do i need to set a gap on the rings ?

@n1bpd 9 лет назад

When installing new rings they should be checked and adjusted if necessary. If the gap is too small when they expand due to engine temperature they could get forced into the piston ports.

@erikwiduch6711 9 лет назад

how much hp

@erikwiduch6711 9 лет назад

if i pre mix what ratio should i run i just got this kit

@n1bpd 9 лет назад

50:1

@erikwiduch6711 9 лет назад

do you know what ratio this runs like gas mixed with oil?

@Chnospi 8 лет назад

50:1 on 5 liters gas 1 dl of oil but i would rate you more oil the more ccm you have

@erikwiduch6711 9 лет назад

does this kit still use the oil injection system?

@n1bpd 9 лет назад

I don't think it add's enough oil to keep the correct ratio when used with any of the larger cylinders, they use more gasoline - but the oil injection still add's the same amount of oil. The general advice I've seen suggests your better off premixing oil/gas rather than using the injection even with stock engines as if the system fails its bad.