OP
@grfx avatar
UTC

Enthusiast
1965 vespa 150 sprint VLB 1T
Joined: UTC
Posts: 52
Location: Ojai, California
 
Enthusiast
@grfx avatar
1965 vespa 150 sprint VLB 1T
Joined: UTC
Posts: 52
Location: Ojai, California
UTC quote
My old cylinder for my 1965 vlb 150 was tweaked so I got a new one. When I was assembling it I noticed where the head mounts on it doesn't have a lip Just a raised portion where the head meets. I know it does not need a gasket but seemed odd enough that I thought I should ask our community about it. The pictures I show is one with old head and new cydlinder, notice lip on head and just a flat on cylinder. The other picture of cylinder is of the old one notice matching lip for head lip. Hope I explained it clearly. Also the pin on the cylinder base by the ports does not have a pin in it, that matches engine casing.
Forum member supplied image with no explanatory text
Forum member supplied image with no explanatory text
UTC

Molto Verboso
One or two fun scoots....nothing too precious
Joined: UTC
Posts: 1984
Location: UK (South East)
 
Molto Verboso
One or two fun scoots....nothing too precious
Joined: UTC
Posts: 1984
Location: UK (South East)
UTC quote
That looks very Pinasco like. What diameter is the bore?
@mjrally avatar
UTC

Veni, Vidi, Posti
73 & 74 Rally, 76 ET3, 80 P200, 06 PX150, 59 Ser 2, 65 Silver Special, 90 V5N 50, 2015 HD Road Glide Special
Joined: UTC
Posts: 5150
Location: Oceanside, CA
 
Veni, Vidi, Posti
@mjrally avatar
73 & 74 Rally, 76 ET3, 80 P200, 06 PX150, 59 Ser 2, 65 Silver Special, 90 V5N 50, 2015 HD Road Glide Special
Joined: UTC
Posts: 5150
Location: Oceanside, CA
UTC quote
Low compression head with a raised lip and corresponding female end to match it on the cylinder is common in early motors with a deflector style piston. Heads with no lip, domed piston and high compression setups replaced that. I'm guessing you've got a newer cylinder but older parts. Sadly not apples to apples. Where did you buy your new cylinder?
OP
@grfx avatar
UTC

Enthusiast
1965 vespa 150 sprint VLB 1T
Joined: UTC
Posts: 52
Location: Ojai, California
 
Enthusiast
@grfx avatar
1965 vespa 150 sprint VLB 1T
Joined: UTC
Posts: 52
Location: Ojai, California
UTC quote
The cylinder is 57mm. I got the cylinder at Super Mercato. Just got an e-mail from them seems like a new head is my best option. $40 US, If it makes it work I'm on it. Do I still use no head gasket?
@mjrally avatar
UTC

Veni, Vidi, Posti
73 & 74 Rally, 76 ET3, 80 P200, 06 PX150, 59 Ser 2, 65 Silver Special, 90 V5N 50, 2015 HD Road Glide Special
Joined: UTC
Posts: 5150
Location: Oceanside, CA
 
Veni, Vidi, Posti
@mjrally avatar
73 & 74 Rally, 76 ET3, 80 P200, 06 PX150, 59 Ser 2, 65 Silver Special, 90 V5N 50, 2015 HD Road Glide Special
Joined: UTC
Posts: 5150
Location: Oceanside, CA
UTC quote
grfx wrote:
The cylinder is 57mm. I got the cylinder at Super Mercato. Just got an e-mail from them seems like a new head is my best option. $40 US, If it makes it work I'm on it. Do I still use no head gasket?
Did they say you could use the old piston with the $40 head? Or did you receive a new piston with the cylinder? Just making sure were keeping it apples to apples.

Still no gasket but if youre feeling up to it, a little copper gasket spray will always help.
OP
@grfx avatar
UTC

Enthusiast
1965 vespa 150 sprint VLB 1T
Joined: UTC
Posts: 52
Location: Ojai, California
 
Enthusiast
@grfx avatar
1965 vespa 150 sprint VLB 1T
Joined: UTC
Posts: 52
Location: Ojai, California
UTC quote
Yes came with new piston, wrist pin,cir- clips and rings. Thanks for checking.
DoubleGood Design banner

Modern Vespa is the premier site for modern Vespa and Piaggio scooters. Vespa GTS300, GTS250, GTV, GT200, LX150, LXS, ET4, ET2, MP3, Fuoco, Elettrica and more.

Buy Me A Coffee
 

Shop on Amazon with Modern Vespa

Modern Vespa is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to amazon.com


All Content Copyright 2005-2024 by Modern Vespa.
All Rights Reserved.


[ Time: 0.0116s ][ Queries: 4 (0.0035s) ][ live ][ 313 ][ ThingOne ]