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@rodri9o avatar
UTC

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PX 200 E 'Iris' edition
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@rodri9o avatar
PX 200 E 'Iris' edition
Joined: UTC
Posts: 876
Location: Long Island, NY
UTC quote
Hi guys,
What do I need to do to break in a new cylinder and piston I put in?

I just replaced the cylinder and the piston on the PX and it is running very well...already have done 35km's on it or so, but I want to make sure I'm doing things properly. I mixed the oil to fuel ratio to 3% and I'll be running 700 miles nice and easy.


Any other advice?
@gickspeed avatar
UTC

Ossessionato
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Location: Racing Capital of the World
 
Ossessionato
@gickspeed avatar
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Location: Racing Capital of the World
UTC quote
It needs to be at 2%. If you go beyond that, then you are leaning your jetting.

Take it easy for the first couple hundred miles. I tend to run a couple tanks using Dino oil. Then switch to a full synthetic.

Do plug chops to insure you ate jetted correctly.
@vader19 avatar
UTC

Mr. Clean
P,SUPER,V90, 50 Special
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Posts: 10205
Location: This is't my locker!
 
Mr. Clean
@vader19 avatar
P,SUPER,V90, 50 Special
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UTC quote
I've always gone the trash and chill, seat the rings method, hasn't failed me yet... there's another thread that argues both... works for me, but I won't sell it... my top ends are mine to potentially seize, but if it aint mine, I'd say follow johns advice.... whateve you do, don't go any less than %2. err on the + side.
OP
@rodri9o avatar
UTC

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PX 200 E 'Iris' edition
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Posts: 876
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@rodri9o avatar
PX 200 E 'Iris' edition
Joined: UTC
Posts: 876
Location: Long Island, NY
UTC quote
i ran a search on here and apparently i used the wrong terms as i did not find anything.

what wold be the search terms so i can read up on this?
@jwilliams avatar
UTC

Addicted
'60 Allstate VNB1, '60 GS150 VS5, '61 Cushman VBB1, '62 GS160 Mk1 VSB1, '64 GL VLA1, '74 Rally VSE1 200 Euro, '78 P200e VSX, '06 LX150
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@jwilliams avatar
'60 Allstate VNB1, '60 GS150 VS5, '61 Cushman VBB1, '62 GS160 Mk1 VSB1, '64 GL VLA1, '74 Rally VSE1 200 Euro, '78 P200e VSX, '06 LX150
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Location: Half Moon Bay, CA
UTC quote
I am running in another '78 P200 with new cyl and rings. 90 miles of 600 so far at 35mph and lots of gear and RPM changes.

I believe in the Piaggio engineers' run-in instructions because of their years of empirical testing. I don't believe in ancient aliens, a free lunch, man-made global warming, big foot, pills that make you skinny, that boob-jobs increase self-esteem or other apriori claptrap.

Attended a VW show once. A big event was running a 40hp engine at WOT, WITHOUT OIL, to see how long it would last. Blew a rod right through the crankcase after nearly a minute. Suprised it lasted that long. However, if it had survived a cross country drive I would have had to rethink my belief in Pennzoil.

@rob98801 avatar
UTC

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85 Vepsa PX150E with sidecar, 80 P200 with sidecar, 96 Goldwing with Hannigan Sidecar, LR87aj5, LR91aj3
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@rob98801 avatar
85 Vepsa PX150E with sidecar, 80 P200 with sidecar, 96 Goldwing with Hannigan Sidecar, LR87aj5, LR91aj3
Joined: UTC
Posts: 578
Location: Central Washington State
UTC quote
jwilliams wrote:
I believe in the Piaggio engineers' run-in instructions because of their years of empirical testing. I don't believe in ancient aliens, a free lunch, man-made global warming, big foot, pills that make you skinny, that boob-jobs increase self-esteem or other apriori claptrap.
Amen brother,Amen
⚠️ Last edited by Rob98801 on UTC; edited 1 time
@jsharpphoto avatar
UTC

Molto Verboso
1974 Vespa Sprint Veloce, 1963 VBB 180 Custom
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Posts: 1380
Location: Dallas, TX
 
Molto Verboso
@jsharpphoto avatar
1974 Vespa Sprint Veloce, 1963 VBB 180 Custom
Joined: UTC
Posts: 1380
Location: Dallas, TX
UTC quote
different manufacturers recommend different things. the paperwork that came with my pinasco aluminum 177 kit, recommended 3% for 300 miles.

Gick, do you disagree with those suggestions? I fully understand that more oil can actually make you lean. Maybe it has something to do with the fact that it's aluminum vs. cast iron?
@vader19 avatar
UTC

Mr. Clean
P,SUPER,V90, 50 Special
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Mr. Clean
@vader19 avatar
P,SUPER,V90, 50 Special
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Posts: 10205
Location: This is't my locker!
UTC quote
"Proper way to break in a new top end"


This is the thread I was talking about... some different points of view.
What I call "thrash and chill" I'm talking about doing some heat cycles... and then RUN it.
@jackson85 avatar
UTC

Ossessionato
T5 Pole Position, T for thoroughbred
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Location: Dublin
 
Ossessionato
@jackson85 avatar
T5 Pole Position, T for thoroughbred
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Posts: 4631
Location: Dublin
UTC quote
im a thrash and chill man. your top end though
@astromags avatar
UTC

Veni, Vidi, Posti
'80 P200E, '76 Primavera 125 ET3. '59 Vespa 150
Joined: UTC
Posts: 6897
Location: GT, Texas
 
Veni, Vidi, Posti
@astromags avatar
'80 P200E, '76 Primavera 125 ET3. '59 Vespa 150
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Posts: 6897
Location: GT, Texas
@travisnj avatar
UTC

Primasarah
1979 P200E, 1977 Rally 200, 1974 Primavera
Joined: UTC
Posts: 3087
Location: Lake Worth, FL
 
Primasarah
@travisnj avatar
1979 P200E, 1977 Rally 200, 1974 Primavera
Joined: UTC
Posts: 3087
Location: Lake Worth, FL
UTC quote
Thrash it in, don't sit at a set rpm for too long (it can cause piston ridging).
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