1980 Morini M1 pacer help

I just installed a new 42mm too end kit on my pacer super sport...

I bought the ped seized a few months ago and the plan was to keep it simple.

I got the old piston out of the cylinder but the walls of the cylinder were too far gone to just put a stock size piston in.

So I got the 42mm kit and now I need some help.

What carb or jetting is a good starting point and suggestions on a pipe?

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Re: 1980 Morini M1 pacer help

Pete Flaven /

The bike is bone stock with no mods except for the 42mm kit.

I’m hoping by me upgrading to the 42mm I didn’t over complicate things

Any help would be greatly appreciated

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Re: 1980 Morini M1 pacer help

Enlarge the stock air filter holes, put in a #58 jet, put a see-thru paper inline filter under the tank, get a mild pipe for more durability. Replace the top end wrist pin bearing if it has wear.

Re: 1980 Morini M1 pacer help

Pete Flaven /

So no major porting or buying a bigger carb?

Re: 1980 Morini M1 pacer help

COULD be your carb is a little small. A 14/12 Dellorto with a 58 jet should be good with a mild pipe . No, I never do porting because I like 38-40 mph and 100 mpgs.

Re: 1980 Morini M1 pacer help

Pete Flaven /

Would the MK3 pipe be considered mild? Sorry fir all the questions

Re: 1980 Morini M1 pacer help

No, I think it's racy, but you just jet to it.

Re: 1980 Morini M1 pacer help

Pete Flaven /

Any idea who makes a mild pipe for the Morini?

Re: 1980 Morini M1 pacer help

I bought my few pipes at MopedwareHouse years ago. They are mid-range for hill climbing performance.

I do not know ,but I'll bet Blake here or someone does know.

Re: 1980 Morini M1 pacer help

Pete Flaven /

The 42mm kit I got had a steel head gasket. Yesterday I started the bike and it was literally pushing exhaust out of the head gasket. 😞

I removed the head and installed the stock 50cc gasket...too small, the piston touches it.

I ordered new gaskets, a mild pipe and some jets

I’m trying to find a big bore fiber head gasket but no luck so far

Re: 1980 Morini M1 pacer help

Just cut it out of a piece of copper sheeting or aluminum.

Remember to re-torque the head after it cools down after you've run it a coupla hours. (edited)

Re: 1980 Morini M1 pacer help

Terbo Speghetti /

> Pete Flaven wrote:

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

> Would the MK3 pipe be considered mild? Sorry fir all the questions

The mk3 pipe is very mild, but also save your money and run the stock pipe. The ride will be better, that's what they designed kits for.

Re: 1980 Morini M1 pacer help

Dont get the mk3 pipe, I have one, and it blocks off my center stand. Get a slip on exspansion chamber, and clamp or weld it on to the stock header. Its much cheaper too, good luck!

Re: 1980 Morini M1 pacer help

Pete Flaven /

I ended up getting a universal mid range pipe. I’ll fabricate a header and make it work.

Made some quick engine turned side panels ... makes it look fast 🤣🤣🤣

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Re: 1980 Morini M1 pacer help

I have set these up with a dellorto 15 sha with the 14 Intake. I put around 74- 80 jet in there I really don't remember exactly. it hits nicely. Pipes are hard to come by I'm looking for on now but probably gonna hack up a stock header with a chamber. I modded a Puch low end pipe it was a lot of shaving on the header end to fit.

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