explanation of the Ferrari 308 vs 914-6 caliper, differences and necessary mods to use 308 caliper Options

[jim dorociak]

Ok - I started down a slippery slope and now am faced with exactly what to do to wrap up my calipers.
Initially had refurbished 4 cylinder calipers and wanted to split and run vented rotors, well the spacers from 911 calipers do not fit, so I decided to look for 914-6 rear calipers knowing that I already had the spacer blocks from the 911 calipers - and then I ran across some Ferrario 308 calipers and thought I had the final solution as they already have spacer blocks and started a restoration of these calipers. I managed to get them disassembled, and all the parts gold zinc plated and am ready for assembly only to bump into Eric Shea at the last swap meet in LA last weekend and he mentioned that the bleeder valve was in the opposite end of the caliper compared to the 914-6 and the proper way was to have the caliper half drilled in the 914-6 location and run two bleeder valves - So is it the need to have the bleeder valve at the top of the caliper as the -6 caliper is so it works properly or could you just not do the modification to drill and run 2 bleeder valves - a convenience factor or must do to properly bleed the caliper?

Who used the 308 calipers and did you do the dual valve set up???

I look forward to any discussions and experiences you guys can share.

Jim. jdorociak@gmail.com,

[iankarr]

Here’s how PMB restored my 308 calipers, with some explanation on how they differ from the 914 ones…


https://www.youtube.com/watch?v=oUvYRPe2bDw

[Superhawk996]

Here’s how PMB restored my 308 calipers, with some explanation on how they differ from the 914 ones…


https://www.youtube.com/watch?v=oUvYRPe2bDw

Cool video -- wish there had been an Interwebz when I had to do a caliper seal kit back on my 1st teener way back in the late 80's. So much good information in Ian's video's.

PMB makes it look so simple. Worth every dollar to have PMB do it if for no reason other than getting a nice Zinc / Yellow Chromate on the calipers that will help prevent future piston bore corrosion!