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Vespa Sprint
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Hi there Vespa enthusiasts.

The chassis number is a VLB1T - a 1970 Sprint 150 but the Engine number is simply as per the attached screenshot - no series prefix. I don't think it is safe to assume that it is a VLB1T engine - If I am looking to identify this engine so I can replace one of the Fly-side needle roller bearings that was almost completely mashed when I dis-assembled - any idea on how I can go about identifying the replacement bearing if I don't find the prefix VLB1T when searching the engine numbers on http://www.scooterhelp.com/serial/ves.motor.serial.numbers.html
Forum member supplied image with no explanatory text
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Hooked
150 GLx, Rally 200
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Measure the bearing, or check the numbers on the bearing?
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measured the bearing - although mangled
Howzit,

Neither of the needle bearings have numbers on them - the one was almost completely in pieces when opening the engine (Gear selector), the other needle bearing has no identifiable number.

I've got the pieces of the one and the whole other - but still would like to understand exactly which engine type I've got in order to buy parts in confidence.
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Molto Verboso
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Molto Verboso
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That bearing sucks. It's such a bad design realtive to the P series bearing in that location. I had to do the same thing to my GL. The entire drive shaft is supported by that thing on the selector rod side and when mine went out it ended up killing the hub side bearing as well. I found individual rollers inside the cases as well. Good thing I didn't try and run it like that (I bought it that way) who knows what kind of damage it could have done.

To answer your question you would need a pre-fix on the engine cases to exactly nail down which cases you have. Short of that, I know of no other way. How many ports does the top end have? Moar pictures?
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more pic's - some info if you can
Hi again - here are images of the bearings. Any identification you can offer or a link to a website that sells these - would be much appreciated.
Forum member supplied image with no explanatory text
Forum member supplied image with no explanatory text
Forum member supplied image with no explanatory text
Forum member supplied image with no explanatory text
Forum member supplied image with no explanatory text
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Re: measured the bearing - although mangled
Bazzer wrote:
Howzit,

Neither of the needle bearings have numbers on them - the one was almost completely in pieces when opening the engine (Gear selector), the other needle bearing has no identifiable number.

I've got the pieces of the one and the whole other - but still would like to understand exactly which engine type I've got in order to buy parts in confidence.
Wheres the other needle bearing from?
Crankshaft / flywheel?

If so, i'd say you had a P range engine which is a one type bearing that fits all P ranges.

Edit:

. . . but looking at your casing image above it doesn't look like one.
The bearing hole looks to big . . .
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I'd say you have a Nammer engine.
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Molto Verboso
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Yea, where is that bearing with the pointy needle bearings from? There should be the first bearing you show in the selector rod area on the flywheel side. That other bearing is some mystery stuff scooby doo.
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dcunited4life wrote:
where is that bearing with the pointy needle bearings from? There should be the first bearing you show in the selector rod area on the flywheel side.
what does this mean?
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Molto Verboso
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Vader19 wrote:
dcunited4life wrote:
where is that bearing with the pointy needle bearings from? There should be the first bearing you show in the selector rod area on the flywheel side.
what does this mean?
This bearing appears to be the one which is expected to be found on the flywheel side where the selector rod exits the case.

External inline image provided by member with no explanatory text

Which area of the engine case did this bearing originate from?

External inline image provided by member with no explanatory text
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dcunited4life wrote:
This bearing appears to be the one which is expected to be found on the flywheel side where the selector rod exits the case.
No. That is a fly-side case bearing for crank.
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Regardless. I've only ever seen that sort of wear from a Nammer engine.
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Hi All,

The two bearings are not the same dimension. If you look carefully at the crankcase image I have pressed the damaged bearing into the gear selector housing as it is from that housing.
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From what I can see it is a 3 port engine if this helps anything. As far as I understand there isn't a 3T 150 sprint engine rather a 2T, but I see this engine has 3
Forum member supplied image with no explanatory text
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UTC quote
It does look like a P range engine now i can see your crank flywheel bearing in place.
Theres also the lack of kickstart springy plate that you'd find on older engines but not P ranges as P ranges had an actual spring.
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Do you guys think this is the same bearing? Seen on eBay
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Check SIP's page.
They have dimensions for all their bearings.
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Wow. That bearing is so fucked up I can't stop looking at it.
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Maybe I'm way off here but the prefix should be above the engine number, next to the small piaggio emblem. I think I can make something out in the first photo you posted. Looks like it has an m in it.
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I seriously doubt you'll be able to get a bearing to seat correctly in that lower case. It looks good and fucked.
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Looks kike that bearing spun in the case soooo....I would be more concerned about the condition of that then replacing the bearing....no.
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And a 1970 is too early for that later type of bearing.

Again, I'll say it: NAMMER
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UTC quote
biggy888 wrote:
Maybe I'm way off here but the prefix should be above the engine number, next to the small piaggio emblem. I think I can make something out in the first photo you posted. Looks like it has an m in it.
s

I can see the letters on the case, too. I think you should use a magnifying glass or try to take some paper and pencil/charcoal or something and rub across letters to figure out what you really have before you start buying stuff.

BTW, the engine case looks toast. At least you didn't find a soda can in there.
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UTC quote
I found it!
Howzit Guys,

I can't believe I didn't see it. It is clearly a VLX1M as the engine prefix.
Thanks Biggy888, now to find the replacement bearing from the parts catalogue -
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UTC quote
I can't find a link to the catalogue for the bearing
Hi again Chaps,

now that I know the engine number to be a VLX1M - where do I find a catalogue that shows me what bearings are compatible with this engine type? Seem to be struggling to get to the SIP page that shows all the bearings specific to this engine type - just don't find the VLX1M engine type anywhere.
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dude, that engine is toast. save your money for a new lump.
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Molto Verboso
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UTC quote
Re: I found it!
Bazzer wrote:
Howzit Guys,

I can't believe I didn't see it. It is clearly a VLX1M as the engine prefix.
Thanks Biggy888, now to find the replacement bearing from the parts catalogue -
If the numbers reads VLX1M-201238, that's a 1980 PX150 engine. Double check those letters to be sure. You may have a Vietnam special. Pictures would help.

The engine looks like its pushing daisies. Try for another engine. and go over the scooter with a magnet to see if you have something that may not be safe.
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turning the corner on the restore project
Hi there Chaps,

Just thought you would like to know I solved my mystery of the no-name bearings. I hooked up with a young guy who seems to have taken over a truckload of old Vespa spares - and had the bearings I needed at a fraction of the new price.

Here is what the crankcase looks like now. Thanks for all the advice and help as usual.
Forum member supplied image with no explanatory text
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