Bought a 70cc45mm Dmp kit for my E50 pinto puch . helpful tips

The kit came with a 15mm bing carb/ intake i have a jammer boss pipe, flat and stock gearing all the way around n clutch, thou i have upgraded to blue springs"performance springs" . 1. Can i run my stock crank with this kit?

2. Is there some porting i could do?

3 i hear knifing around the base of the cylinder is bad idea in comparison to bevelling . so is smoother , morerounded edges , better then smooth sharp sharp edges.

Any help on the three questions above , would be appreciated, valued if good or better opions on these subjects are better then what i have researched

Re: Bought a 70cc45mm Dmp kit for my E50 pinto puch . helpful tips

Don’t use that pipe get a circuit type pipe and a hi flow air filter. Rebuilding is a good idea with needle bearing crank because you really need to take the motor apart to case match the kit. Keep the gearing under 10k rpm.

Re: Bought a 70cc45mm Dmp kit for my E50 pinto puch . helpful tips

That kit makes a lot of power!

I would not run a lil bing for the kit.

Re: Bought a 70cc45mm Dmp kit for my E50 pinto puch . helpful tips

Checkout my Athena ahh thread a few posts up you can 100% do some good porting on they cylinder. And fitting a large reedblock from a minarelli am6 is quite easy of you can fabricate a riser plate to fit it in

Re: Bought a 70cc45mm Dmp kit for my E50 pinto puch . helpful tips

1, Always a good idea to rebuild. Seals at the very least. But it's your bike!

2, you should match the transfers to the case with a die grinder. Trace the ports on the cylinder and mirror them to the case. Remove the case material so the transfers match better. However much you dicide to match is up to you...chamfer the ports too if they are sharp.

3, yeah air doesn't like sharp edges all the time, I try smoothem in...

That pipe sucks. It's fine for a lil' pep from a stock cylinder, but if you want to get anywhere near to the kits potential get a circuit pipe like clippy says....

15bing is my favorite carb for za50's. But you really want something bigger for a single speed. It's gotta breathe.

Re: Bought a 70cc45mm Dmp kit for my E50 pinto puch . helpful tips

Much appreciated the advice , and taking in, any advice on an affordable intake n carb upgrade?

Re: Bought a 70cc45mm Dmp kit for my E50 pinto puch . helpful tips

I did do soome case matching to the kit , but didn't take it down all the way. Because i was in fear of getting or making casing port wall to thin. So it 1mm to1.5mm s off from matching the kit.

Re: Bought a 70cc45mm Dmp kit for my E50 pinto puch . helpful tips

Overpriced Parts /

> Rocco Taco Wrote:

> -------------------------------------------------------

> That kit makes a lot of power!

>

> I would not run a lil bing for the kit.

With a 14mm bing (I like it better then 15mm on pp kits) and knowing to tune I keep up with 19 and 21 mm phbg carbs (if he is talking about a piston port cylinder) as well as killing big carb off the line with same pipe and stock ignition, the 17.5 dellorto phva is the exception (that carb rules) it has good low end if he’s talking about reed kit then ya bigger carburetor is better,

Getting back to the OP’s questions you got a mismatch set up, with a high rpm pipe and stock gearing you are going to have to rebuild with a needle bearing crank plus you’ll be running way hotter at speed so you may need aftermarket auto retard ignition to run cooler at speed, if you could keep your RPMs lower (14mm bing, circuit or estoril pipe and up gear you could run stock ignition and stock crank,

Blue springs are nothing, you need to get stiffy kickstart springs,

Don’t do any porting until your kit is tuned and broken in and you are able to run cool on long runs,

The more porting you do the more metal you remove so the more heat sink capabilities you remove unless you carve gas porting channels and other fancy stuff with a dental drill

Also if you’re using stock ignition make sure you completely service your magneto and learn timing, the information is here https://www.mopedarmy.com/wiki/Puch_timing

I had a friend revise it a little while ago so it has more and better information on the care and feeding of stock ignition

Re: Bought a 70cc45mm Dmp kit for my E50 pinto puch . helpful tips

> Overpriced Parts Wrote:

> -------------------------------------------------------

> > Rocco Taco Wrote:

>

> > -------------------------------------------------------

>

> > That kit makes a lot of power!

>

> >

>

> > I would not run a lil bing for the kit.

>

> With a 14mm bing (I like it better then 15mm on pp kits) and knowing to

> o tune I keep up with 19 and 21 mm phbg carbs (if he is talking about a

> piston port cylinder) as well as killing big carb off the line with same

> pipe and stock ignition, the 17.5 dellorto phva is the exception (that

> carb rules) it has good low end if he’s talking about reed kit then ya

> bigger carburetor is better,

>

> Getting back to the OP’s questions you got a mismatch set up, with a

> a high rpm pipe and stock gearing you are going to have to rebuild with

> a needle bearing crank plus you’ll be running way hotter at speed so you

> may need aftermarket auto retard ignition to run cooler at speed, if you

> could keep your RPMs lower (14mm bing, circuit or estoril pipe and up

> gear you could run stock ignition and stock crank,

>

> Blue springs are nothing, you need to get stiffy kickstart springs,

>

> Don’t do any porting until your kit is tuned and broken in and you are

> e able to run cool on long runs,

>

> The more porting you do the more metal you remove so the more heat sink

> capabilities you remove unless you carve gas porting channels and other

> fancy stuff with a dental drill

>

> Also if you’re using stock ignition make sure you completely service

> e your magneto and learn timing, the information is here

> https://www.mopedarmy.com/wiki/Puch_timing

>

> I had a friend revise it a little while ago so it has more and better

> r information on the care and feeding of stock ignition

Your dmp kit with a 14mm bing goes 58mph+?

Re: Bought a 70cc45mm Dmp kit for my E50 pinto puch . helpful tips

Overpriced Parts /

> Rocco Taco Wrote:

> -------------------------------------------------------

> > Overpriced Parts Wrote:

>

>

> > > Rocco Taco Wrote:

>

>

> > > That kit makes a lot of power!

>

>

> > > I would not run a lil bing for the kit.

>

> >

>

> > With a 14mm bing (I like it better then 15mm on pp kits) and knowing

> to

>

> > o tune I keep up with 19 and 21 mm phbg carbs (if he is talking about

> a

>

> > piston port cylinder) as well as killing big carb off the line with

> same

>

> > pipe and stock ignition, the 17.5 dellorto phva is the exception (that

>

> > carb rules) it has good low end if he’s talking about reed kit then

> ya

>

> > bigger carburetor is better,

>

>

> Your dmp kit with a 14mm bing goes 58mph+?

You didn’t read what I said, “if he was talking about a dmp reed valve kit I said a bigger carburetor is better” but not a dmp piston port kit (a 70cc dmp pp kit like a 70cc kstar/treats kit but better) which I was talking about, he didn’t say dmp reed kit

And ya I hit 58mp but with a smaller 64cc 43mm reed kit and 15mm bing not 14mm Running stock ignition and stock crank/stock bottom end,

Built In 2006-07 and still maintained it still goes as fast, runs cool as a cucumber and still hasn’t blown up, built for a fraction of money, parts and time you got in your bike, I take it anywhere,

Re: Bought a 70cc45mm Dmp kit for my E50 pinto puch . helpful tips

Idk , have to take it to the complete top end, doing the breaking like a rc motor break in , but will be testing my top end on my next ride, already have the crank ugrade with needle bearing,

Re: Bought a 70cc45mm Dmp kit for my E50 pinto puch . helpful tips

And just ordered a 15 t and 14t sprocket for the front. What could these sprockets bring me to? And a stock 45 on the rear.

Re: Bought a 70cc45mm Dmp kit for my E50 pinto puch . helpful tips

> Joshua Rosa Wrote:

> -------------------------------------------------------

> And just ordered a 15 t and 14t sprocket for the front. What could these

> sprockets bring me to? And a stock 45 on the rear.

http://toolbox.martysgarage.info/

Check the calculate gearing tool, it’s designed for Puch e50 engines and will let you work stuff like that out

Re: Bought a 70cc45mm Dmp kit for my E50 pinto puch . helpful tips

> Joshua Rosa Wrote:

> -------------------------------------------------------

> And just ordered a 15 t and 14t sprocket for the front. What could these

> sprockets bring me to? And a stock 45 on the rear.

You can’t really expect more than 9000rpm out of that pipe and cylinder combo. And definitely not on a stock crank. But 15x45 probably around 40mph and rapid acceleration

Re: Bought a 70cc45mm Dmp kit for my E50 pinto puch . helpful tips

But i am looking for more to speed. So as far as the sprockets go, how do i go about getting more top speed

Re: Bought a 70cc45mm Dmp kit for my E50 pinto puch . helpful tips

> Joshua Rosa Wrote:

> -------------------------------------------------------

> But i am looking for more to speed. So as far as the sprockets go, how

> do i go about getting more top speed

A 17 upfront will help.

Larger front sprocket, smaller rear sprocket for top speed

I know a brit guy over here running a Bosch ignition 17x45 gearing and a homoet p4 pipe (high revving) who gets 50mph.

Check that link I sent in my last post. 17x45 at 9000~ rpm is 44mph.

I’ve attached a couple of photos for your consideration one of how a stock skirt looks above the transfer.

And how you can modify it for faaaar more power. This is a great freeeeee mod you can do with a dremal or diamond needle files and lots of time.

Stock crank will be dead within weeks if you do this though as the increase is whack!

F18AE472-0E57-498D-BF53-C698DEF33845.jpeg
C42434A3-E494-4ED0-8555-6072C91CFB7A.jpeg

Re: Bought a 70cc45mm Dmp kit for my E50 pinto puch . helpful tips

Just re read the thread realised you have a needle bearing crank.

Go for it POWERRRR

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