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Old 03-05-2008, 04:34 AM
Mario.D Mario.D is offline
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Giulietta Sprint 1959 Upgrade
Im intend modify my Giulietta Sprint 1959 to make a Allegerita version.
Stock 1300 with single Solex will be replaced with a Alfa Supercuadro
engine( 1600 Stock block bored to 1750 (80mm pistons) and 1300 101 crankshaft,1600 head including 1050203200.00 cams & dual Weber 45.
What i need modify to replace stock 4 speed trany to 5 speed trany ?
Thanks for your help.
Regards
Mario

Giulietta Sprint 1959
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Jaguar XK 120 Roadster 1954
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Old 03-05-2008, 07:09 AM
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BlpltGTV BlpltGTV is offline
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Any idea on what type of hp this setup will make? I'm currently trying to pick a 59 101 up, and would be interested in a build such as this.

Will
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Old 03-05-2008, 09:01 AM
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pathung pathung is offline
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My guess is hp figures would be similar to that of a Euro 1750 GTV? As Mario's using 45 Webers, the numbers may be slightly higher.
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Old 03-05-2008, 11:48 AM
101 Alfa Mike 101 Alfa Mike is offline
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Quote:
What i need modify to replace stock 4 speed trany to 5 speed trany ?
You need a later 5-speed tranny. It will bolt right up with a 101-Gulia transmission cross mount. I prefer to stuff the inner workings from the later 5-speed into the earlier 4-speed bell housing, case, and tail housing. You will need a special oil seal to seal the late input shaft in the early bell housing. The speedo drive in the later box will probably be for a 4.56 which is I expect you need.

Mike R
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Old 03-05-2008, 02:58 PM
Mario.D Mario.D is offline
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Thanks Mike.

Need i replace the rear end too?
I have Junior 5 Speed trany & rear end.
What will hapen with a clutch pedal?

Regards
Mario
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Old 03-05-2008, 03:18 PM
Mario.D Mario.D is offline
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The Alfa Supercuadro old preparation is a stroker engine to get 80 mm piston
& 80 mm displacement.
With a 1600 head can arrive to 12.1 compresion,in the past some people
used 1300 head ,is explosive but have fragile 13.1 or more.
The vantage is to get aprox.8000 RPM starting 2000 RPM power band.

Regards
Mario
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Old 03-05-2008, 10:57 PM
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Quote:
Originally Posted by Mario.D View Post
The Alfa Supercuadro old preparation is a stroker engine to get 80 mm piston
& 80 mm displacement.
With a 1600 head can arrive to 12.1 compresion,in the past some people
used 1300 head ,is explosive but have fragile 13.1 or more.
The vantage is to get aprox.8000 RPM starting 2000 RPM power band.

Regards
Mario
Thats way to high strung for my taste. 10.5 is about the limit that I'd be interested in. 12:1 or greater is just asking for bearing failure at an early age.

Will
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Old 03-06-2008, 03:51 PM
Mario.D Mario.D is offline
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Hi Jason.

Yes i removed bumpers,lateral glasses,upholstery and others stuff.
Allegerita without power remain only Allegerita.

Regards
Mario
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Old 03-06-2008, 04:42 PM
101 Alfa Mike 101 Alfa Mike is offline
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Quote:
Need i replace the rear end too?
I have Junior 5 Speed trany & rear end.
What will hapen with a clutch pedal?
In terms of the tranny upgrade, you just want to make sure the speedo drive gears match the rear end ratio you will be using.

I would stick with a mechanical clutch and it will all bolt up. Suppose you could use a later bell housing and convert to a hydraulic clutch, but I've never done that.
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