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Posted by: blitZ Sep 23 2012, 06:20 AM

I am offered a good deal on some early 911 struts, but they have the 3 inch caliper spacing. Is there a disadvantage to these? Are calipers easy to source?

Thanks

Posted by: mepstein Sep 23 2012, 06:26 AM

Easy and cheap. (M calipers)

Posted by: tomeric914 Sep 23 2012, 07:15 AM

No problem with 3" spacing

Posted by: ClayPerrine Sep 23 2012, 07:48 AM

They also work fine with Boxster calipers.

Posted by: nsr-jamie Sep 23 2012, 08:35 AM

I thought the 3 inch spacing struts from the T 911 models would not fit any of the later calipers? Do those boxster calipers bolt on? Or do they need special adapters? I have the same struts and am thinking about upgrades in the future. I know PMB has a caliper kit with alloy calipers that bolt on to 3 inch spacing but have not heard about boxster ones. Someone please let me know. I would love to have cool Boxster calipers on my 914...but they have to clear 15 inch Fuchs (15 x 5.5J) and fit my early 911T (3inch spacing) struts.

Can't somebody just machine some adapters?? I would like to see that.

Posted by: ClayPerrine Sep 23 2012, 08:46 AM

Boxster calipers need adapter blocks to put on a 914. Rich Johnson sells the kits. If you use the rear mounting blocks on the front, you can use the 3" 911 struts.

Posted by: blitZ Sep 23 2012, 01:05 PM

Cool, looks like plenty of options. Aluminum Brembos? Where did you get those?

Thanks all

Posted by: mittelmotor Sep 23 2012, 01:51 PM

I'm pretty pleased with the M calipers on my V-8 conversion, with a std 17-mm master cylinder, stock 914-4 rear calipers and a T fitting replacing the proportioning valve. Takes a lot of leg, but they haul the car down from speed nicely in aggressive street driving. Easy to source, cheap and with the cooling holes for the V-8 conversion, I can bleed them from inside the frunk!

Posted by: blitZ Sep 23 2012, 03:20 PM

These struts come with Boge inserts. Will they fit the 914?

Posted by: rohar Sep 23 2012, 04:02 PM

I've been kicking around 3" adapters for these lately:



Bring big rims. No, bigger than that. 17" minimum.

4x40mm pistons per caliper. Could be fun.

Posted by: Dave_Darling Sep 23 2012, 05:18 PM

The 3" struts have good odds of being earlier than the 3.5" ones. They may have the bolt-retained ball joint instead of the later improved wedge-pin one.

You can't just bolt up A or S calipers to the 3" struts.

Those are about the only downsides I can think of.

--DD

Posted by: tomeric914 Sep 23 2012, 10:07 PM

They are Alfa calipers

http://www.pmbperformance.com/catalog/item/4741552/6862358.htm

Posted by: craig downs Sep 24 2012, 12:39 AM

I machined a couple pair of 3" struts for me and Aaron Cox about 4 years ago for our boxter calipers. It was a lot of work but they work great. We did a thread on it so if you look for it you will probably find it.