Porting

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karhawk
Posts: 150
Joined: Wed Oct 08, 2008 8:13 pm
Your car is a: 81 spider

Venolia forged pistons

Post by karhawk »

My built 1800 has Venolia forged pistons, the last time I priced a set they were about $500 and were built to order
I don't think rings were included.

Chris
Oakland, Ca.
BEEK
Posts: 1833
Joined: Wed Mar 24, 2010 10:45 pm
Your car is a: 1975 Spider
Location: clermont fl

Re: Porting

Post by BEEK »

Daniel wrote:how was your valve to piston clearance ? do you remember what the spacing was at ? roughly ?
sorry i didnt see this posrt earlyer
i do not remember the clearances but i do remember when we played with cam timing we could make the valves hit the pistons within a few degrees of the factory settings, with the high lift cams we were using. one thing this makes me want to do is to dust off the old parts and engines i have in the garrage and rebuild a few of those engines. heck i might put one in my spider.
Automotive Service Technology Instructor (34 year Fiat mechanic)
75 spider
, 6 Lancia Scorpions, 2018 Abarth Spider, 500X wifes, 500L 3 82 Zagatos. 82 spider 34k original miles, 83 pininfarina, 8 fiat spider parts cars
son has 78 spider
Daniel

Re: Porting

Post by Daniel »

i do not remember the clearances but i do remember when we played with cam timing we could make the valves hit the pistons within a few degrees of the factory settings,
This is the part that concerns me when milling a head or block to raise the CR then your playing with a lot less
room for the valve to piston spacing and asking for trouble when using larger cams . I feel stock or mild cams
aren't going to be a problem .
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