Re: Tech/Alfa Romeo lifters

["Jonas Karlsson" <jonas85k@hotmail.com>]

From: T Berk <tberk@mindspring.com>
>andkat wrote:
> >
>>Has anybody used the larger alfa lifters?  I think they are 35mm where the 
>>volks are 32mm(?).  My lifter bores are a little bellmouthed so I would 
>>like to bore them bigger and use the larger dia. lifters.  Someone also 
>>suggested sleaving them,

>Do they weigh more than stock? Reciprocating Mass and all that.
>Other than your spec. situation, is there any performance reason to mod in 
>this direction?

Sounds like Andy wants to keep his head (lots of expensive work/effort 
perhaps) while "reconditioning" the lifter bores.

Aside from that, having larger lifters does have a performance benefit. 
Larger lifters allow for larger cam lobe faces, and this will make a 
difference in the allowable profile  of the cam, as well as stiffness of the 
valve springs. With stiffer springs you can rev higher, and all that good 
stuff. I doubt just switching to bigger lifters would make any difference by 
itself, even if you had a custom cam designed to utilize the increased 
surface area. There would need to be some serious head custom work to make 
use of it.

HTH

Jonas
85 Scirocco 2.0
78 Scirocco 1.8
87 Scirocco 16V
For direct reply: jonas@metabolex.com
http://www.geocities.com/scirocco2l8v

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