Tuning Abarth Camshaft

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Tuning Abarth Camshaft

Toshi 975

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Feast your eyes you may never see another one.
 

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As far as I am aware there is no problem. You would normally expect to use a hotter camshaft in conjunction with other engine mods. Cylinder head, carb and exhaust as a basic package.
 
To HELP David sell the camshaft, it would be wise for any prospective purchaser to check what size drive sprags the camshaft will accept. If I am correct, the 110 deriratives had a narrower slot in the cam (for the oil-pump drive sprags) than the 126 engine versions.
 
Automotive porn…….what are the specifics of it David, what makes it special?

As far as technical specifics go I do not know apart from I measured the lift at 7.3mm. I once tried to measure all the characteristics of the Alquati camshaft I had by setting it up in an engine block, fitting a large protractor to the flywheel and mounting a DTI on a cam follower.
I got really confused and gave up.
What makes an original new Abarth camshaft special ? Well I guess it is because of what it is and there can’t be many originals of left anywhere in the world. Some dedicated Abarth followers spend their lifetime seeking out original parts. I was lucky enough to have two of these from separate sources. One I listed on eBay for £500 and it sold to a collector in Switzerland within minutes and he went on to buy other original Abarth engine parts I had. I think that it is fair to say that all of the Abarth parts you see for sale now are reproduction but the odd original, generally used, parts turn up from time to time. What makes it special? Probably the same as what makes the gun that shot Billy the Kid worth £1.5 million and a pair of wing nuts from a wartime paratroopers bicycle worth £40.
To answer Tom’s point, yes the dog drive from the camshaft to the oil pump does require a fitting by grinding a shave off the oil pump section. I have come across this a number of times.
 

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i believe a lot of Abarth stuff was forged rather than cast and things like valve springs made from different grades of steel...
 
As far as technical specifics go I do not know apart from I measured the lift at 7.3mm.

Hi Dave, Interesting what the level of lift on the cam is - I've just checked both of my applications and have found the following comparison -
a 35/75 - 75/35 cam of 290deg duration gives 7.25 of lift at the cam lobe.
a 40/80 - 80/40 cam of 300deg duration gives 7.70 of lift at the cam lobe.
both of my cam's are of italian origin but I'm sure that there will be many different timing arrangements available. I also have a cam of unknown origin somewhere - I must measure the lift sometime -
Get it on FleaBay(y)(y)(y)
Ian.
 
Hi Dave, Interesting what the level of lift on the cam is - I've just checked both of my applications and have found the following comparison -
a 35/75 - 75/35 cam of 290deg duration gives 7.25 of lift at the cam lobe.
a 40/80 - 80/40 cam of 300deg duration gives 7.70 of lift at the cam lobe.
both of my cam's are of italian origin but I'm sure that there will be many different timing arrangements available. I also have a cam of unknown origin somewhere - I must measure the lift sometime -
Get it on FleaBay(y)(y)(y)
Ian.

Excuse my crude little chart that I noted some cam details. Min column is the measurement across the lobe base, max is base to top of lobe then lift = max - min.
Cam 1 is a used standard, cam 2 is good used but has a higher lift so possibly a later 126 or mild sport, cam 3 is a new standard, cam 4 is from an Italian prepared 595 Abarth replica, cam 5 is the Abarth, cam 6 is a new last model 126EL
 

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i believe a lot of Abarth stuff was forged rather than cast and things like valve springs made from different grades of steel...

The first Abarth camshaft I sold only had engraved identification markings on it so it may well have been made as a forging. Some boxes for you.
 

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