M151 A1 69 .... a new sunrise

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Cisco82
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Re: M151 A1 69 .... a new sunrise

Post by Cisco82 » November 8th, 2020, 10:28 am

Lol , sorry i didnt remember aboy bike question .... it is my old Oscar Mister College R, the nile i had when i was at high school, it is a 50 cc , Moto Morini engine , four gears, it still goes well.

Now i have a ducati but i never sold my first bike,

bye
Francesco

M151-A1 1969
Alfa Romeo AR-51 1952

Hambone
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Re: M151 A1 69 .... a new sunrise

Post by Hambone » November 8th, 2020, 10:51 am

Cisco82 wrote:
November 8th, 2020, 10:28 am
Lol , sorry i didnt remember aboy bike question .... it is my old Oscar Mister College R, the nile i had when i was at high school, it is a 50 cc , Moto Morini engine , four gears, it still goes well.

Now i have a ducati but i never sold my first bike,

bye
Thanks, It looked bigger than a 50cc with the size of the cylinder and the rear tire makes it look like a trail bike as compared to our Honda Trail 90, I still own a couple of my 70's early bikes.

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Horst
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Re: M151 A1 69 .... a new sunrise

Post by Horst » November 8th, 2020, 12:55 pm

Cisco82 wrote:
November 8th, 2020, 9:15 am
Hi Horst,

you re right for side marker but it is another change due to homologation done in 70' , i cant change the position so i decided to use military side markers (in the 70' there was installed fiat round directional lamps , not so stylish i think..)

BR
I would think no one would care these days on the position any more...
Horst

1972 USMC M151A2 w/ROPS (ex Barstow) and M416
1962 M201 and trailer
1966 Pontiac GTO
1987 Suzuki Samurai
1987 911
1982 Ford E350 Cutaway Skoolie
Gone: 2xM35A2c, Unimog 404S, Hanomag AL28, DKW Munga

Cisco82
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Re: M151 A1 69 .... a new sunrise

Post by Cisco82 » November 28th, 2020, 11:16 am

The assembly is going on , engine and hear box ready for installation and exhaust system and differentatial installation in a more comfortable position :)
20201128_103216.jpg
20201128_103229.jpg
20201128_103242.jpg
20201128_103250.jpg
20201128_103300.jpg
Francesco

M151-A1 1969
Alfa Romeo AR-51 1952

Hambone
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Re: M151 A1 69 .... a new sunrise

Post by Hambone » November 28th, 2020, 7:22 pm

Now that's what you call hanging by a thread. :lol:

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Lou
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Re: M151 A1 69 .... a new sunrise

Post by Lou » November 28th, 2020, 9:21 pm

Like the carb! It would be great to grease the mutt like that, easier then crawling under it. Do not think that would work with the engine in. :lol:
Take Care,
Louie
M151A2,
KA2PFL,
MVPA 27368
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Cisco82
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Re: M151 A1 69 .... a new sunrise

Post by Cisco82 » December 25th, 2020, 9:17 am

A xmas gift for my M151 .... the engine reinstalled on the chassis!!

Merry xmas fellows.
20201225_132607.jpg
Francesco

M151-A1 1969
Alfa Romeo AR-51 1952

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m3a1
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Re: M151 A1 69 .... a new sunrise

Post by m3a1 » December 25th, 2020, 3:08 pm

Ahh... PERFECT! The gift that keeps on giving!

Cisco82
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Re: M151 A1 69 .... a new sunrise

Post by Cisco82 » January 17th, 2021, 10:20 am

Update : today i installed radiator and fron grill , it looks good.

I also had the first run around the garden .... it runs smooth but i noticed two problems:

1 - The clutch is t very aggressive , a sort of on/off may be i have to set it or it is only new (unlikely it is the latest version , i know it "eat" the flywheel)

2 - The compression test was low ... only 85-90 psi equal on all cylinders with engine hot and valve clearance adjusted. I know the cylinder rings was used , i only grinded valves and changed head gasket but i supposed to have a better result to be honest. Any comments?
20210117_140041.jpg
Francesco

M151-A1 1969
Alfa Romeo AR-51 1952

rickf
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Re: M151 A1 69 .... a new sunrise

Post by rickf » January 17th, 2021, 11:28 am

If it has an A2 style puck clutch then yes, it will be aggressive just like you describe. As far as the compression, I believe you said this motor was bought used and sat for a while? I would run it for a month or so and check the compression again. The cylinders may have been a little rusty and the rings will need to wear off the rust and seat back in. If it is running smooth then do not worry about the compression for now. If it is still low a couple months down the road then do a leakdown test and see where the air is blowing through.
1964 M151A1
1984 M1008
1967 M416
04/1952 M100
12/1952 M100- Departed
AN/TSQ-114A Trailblazer- Gone

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Re: M151 A1 69 .... a new sunrise

Post by Hambone » January 17th, 2021, 11:40 am

Jeep is looking great.

Cisco82
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Re: M151 A1 69 .... a new sunrise

Post by Cisco82 » January 17th, 2021, 2:04 pm

Thx Rick, i ll follow your suggestion. For your info the engine is the original one , it was used by my father years ago. i only grinded the valves and changed head gasket . The compression was low even before i removed it, i think the problem is piston rings ... maybe i could check a wet compression test just to see if the compression increase.
I ll keep you updated ;)
Francesco

M151-A1 1969
Alfa Romeo AR-51 1952

rickf
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Re: M151 A1 69 .... a new sunrise

Post by rickf » January 17th, 2021, 2:53 pm

Yes, a wet test will tell you if it is the rings, but again, if it has been sitting for a long time run it for a bit and then check it. I get so many vehicles in my head that I am helping that I tend to forget who has what anymore. :roll: :lol:
1964 M151A1
1984 M1008
1967 M416
04/1952 M100
12/1952 M100- Departed
AN/TSQ-114A Trailblazer- Gone

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Lou
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Re: M151 A1 69 .... a new sunrise

Post by Lou » January 17th, 2021, 8:16 pm

Great progress, looking good! :)
Take Care,
Louie
M151A2,
KA2PFL,
MVPA 27368
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TFischer
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Re: M151 A1 69 .... a new sunrise

Post by TFischer » February 20th, 2021, 11:30 pm

This project is coming along. I like how you use the engine hoist to get at the underside.
Ted
1968 M151A1

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