I suppose it would be gauche to suggest using your drill 
750 Veloce Cam Cover Needed
Need cam cover with 16mm holes for early Sprint Veloce, S/N E06524. (Normales have 12mm holes.) I will be posting photos and more info in the forum. Thank you. Keith Martin
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That would be too easy!I suppose it would be gauche to suggest using your drill
I'll bet there are far more 750 normale cam covers left out there than cylinder heads for them to mount onto, so I'm not sure it would be a crime to hack a little bit.
Greig says that the "plinth" - the flat area that the hole is drilled into, is different on the Veloce than the Normale. Isn't it just like Alfa to do something goofy like that?
I have one, will have to look at the critical dimensions. I have a known-Normale to compare it to. It has 101 cam cover nuts on it.
Andrew
Andrew
Thank you, Andrew. Until this week I never knew there was a difference!
I didn't either, and am now not optimistic mine will suit your needs; odds are it's a Normale. Never known Greig to be wrong!
Andrew
Andrew
I believe both the normals and veloce cam covers are machined from a common casting. The veloces nut seats are spot faced down to a lower height, into the blend radius at the base of the plinth, resulting in a larger face diameter.
Some visuals on the difference between Normale and Veloce Valve cover nuts. Note that the Normale fit into a 12 mm hole (kind of loose fit) the Veloce fits into a 16 mm hole (also kind of a loose fit). Bot types are held into place on the Valve cover with a thin washer and snap ring inside tha valve cover.
Ciao,
Bill Gillham
Jefferson Oregon
Ciao,
Bill Gillham
Jefferson Oregon
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I had forgotten completely about the tab to hold the Normale air cleaner. Yet another question. Why would you have 12mm Normale holes but no air cleaner tab?Mine must be a Normale, has 12mm holes and the pad for the Normale air filter.
Andrew
The veloce cover has the same air cleaner pad, with a cored hole, but the hole is not tapped.
Joe
Joe
Confirming my 101 Veloce has the pads machined lower, and much larger holes. The short 101 cam cover nuts have a shouldered boss on the underside that requires a larger hole.
Andrew
Andrew
How about the 101 ?
Reviving this one year old thread with the 101 cam covers.
Are the 101 cam covers any different than 750s ?
How about the differences between 101 Normale and Veloce cam covers ? Same as for 750 ?
Veloces having a bigger hole for cover nuts and absence or presence of stud for air filter ?
Reviving this one year old thread with the 101 cam covers.
Are the 101 cam covers any different than 750s ?
How about the differences between 101 Normale and Veloce cam covers ? Same as for 750 ?
Veloces having a bigger hole for cover nuts and absence or presence of stud for air filter ?
101 cam cover is wider of course.
The veloce vs normale issues are the same.
On the 750 the castings are the same number, just machined differently to create the veloce cam cover.
DB
The veloce vs normale issues are the same.
On the 750 the castings are the same number, just machined differently to create the veloce cam cover.
DB
Joe and Dave are spot on, 750 Normale & Veloce cam covers are identical in their casting, the difference was in the machining, where the 6 plinths on the Veloce cover were milled off to make more room for the cam cover button under the Veloce air can - on a 750F it's a tight fit.
The reason for enlarging the hole from 12mm to 16mm was to make sure that the shoulder of the cam nut still has some 'meat' to pull / snug down on with the plinth milled off.
The cast boss for the Veloce wasn't drilled & tapped for the stud.
To convert a Normale cover to a Veloce cover is dead simple, mill the plinths down a bit (how much....difficult to say exactly but 2mm to 3mm is about right, drill the holes out to 16mm, extract the air filter stud, thinners wash the hole really well & screw in a length of threaded aluminium rod with locktite, then cut off & clean up the lump, remembering to drill a little dimple +- 6mm drill in the top of the aluminium peg to simulate the casting dimple... if you really need to........ it's under the air box & all but invisible.
The early Veloce cam nuts looked almost like the Normale ones missing the Bakelite, except that the base washer was round & not hexagonal, the later Veloce cam nuts were thin knurled black buttons with a 10mm hex in the middle, while the Normale ones were thick, knurled & had a 14mm hex in the middle. The reason for this change was that Alfa had been making 2 versions of the Veloce air can, one with a pressed dent underneath it for clearance on the 750F's (There's heaps of room in a Sprint), but this was getting complicated, so rather have one version of the air can & make the offending cam nut thinner. Same thing applied to the 101 Veloce / Normale covers.
Lastly The 750 cam covers are narrower than the 101 covers
Hey, no-one said Alfa was logical & they did have heaps of State 'Lira' to $$$pend.....
Ciao
Greig
The reason for enlarging the hole from 12mm to 16mm was to make sure that the shoulder of the cam nut still has some 'meat' to pull / snug down on with the plinth milled off.
The cast boss for the Veloce wasn't drilled & tapped for the stud.
To convert a Normale cover to a Veloce cover is dead simple, mill the plinths down a bit (how much....difficult to say exactly but 2mm to 3mm is about right, drill the holes out to 16mm, extract the air filter stud, thinners wash the hole really well & screw in a length of threaded aluminium rod with locktite, then cut off & clean up the lump, remembering to drill a little dimple +- 6mm drill in the top of the aluminium peg to simulate the casting dimple... if you really need to........ it's under the air box & all but invisible.
The early Veloce cam nuts looked almost like the Normale ones missing the Bakelite, except that the base washer was round & not hexagonal, the later Veloce cam nuts were thin knurled black buttons with a 10mm hex in the middle, while the Normale ones were thick, knurled & had a 14mm hex in the middle. The reason for this change was that Alfa had been making 2 versions of the Veloce air can, one with a pressed dent underneath it for clearance on the 750F's (There's heaps of room in a Sprint), but this was getting complicated, so rather have one version of the air can & make the offending cam nut thinner. Same thing applied to the 101 Veloce / Normale covers.
Lastly The 750 cam covers are narrower than the 101 covers
Hey, no-one said Alfa was logical & they did have heaps of State 'Lira' to $$$pend.....
Ciao
Greig
Thanks Greig, very clear.
And the 12 vs 16 mm hole issue is identical on 101 ?
And the 12 vs 16 mm hole issue is identical on 101 ?
Hi Philippe, yes the 12mm Normale hole vs 16mm Veloce hole is the same for 101
Cheers
Greig
Cheers
Greig
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