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Posted by: burton73 Feb 14 2018, 09:58 AM

Do the Boxster calipers fit factory Fuchs wheels. And do they need to be 16 in wheels.

I am putting Boxster Calipers on my V8 car and I want to know that the 16 Fuchs factory wheels in 16 inches will fit with 7 inch (911) and 8 inch( 951) wheels, Or 8 in (911)

Thanks as always for the help.

Bob B

Posted by: Blue6 Feb 14 2018, 10:36 AM

Yes they do. I'm running 7 & 8 16's with the boxster non-s calipers. I used Rich Johnsons mounting kit, which is quality and well engineered.

Posted by: gothspeed Feb 14 2018, 11:01 AM

What is this 'mounting kit' you speak of?

Posted by: Justinp71 Feb 14 2018, 11:07 AM

For anyone running 15" wheels you can go with Wilwood Calipers... Also there are a couple tricks to installing these, I can inform anyone interested.


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Posted by: mepstein Feb 14 2018, 11:34 AM

You need adaptors to fit 3 1/2 struts. Rebel Racing has f & r adaptors and Stompski racing has them for the front.

Posted by: SirAndy Feb 14 2018, 11:57 AM

I run Boxster calipers on all 4 corners under 15x7 Cookie Cutter wheels using the RJ adapters to mount them.

No problems at all so i don't see why they wouldn't fit under 16" Fuchs wheels ...

Posted by: burton73 Feb 14 2018, 12:05 PM

I emailed Rich,

Got back to me fast.

Bob B

Hi Robert,

Any Porsche 15 or 16" alloy wheel, 7" or wider will fit over the boxster caliper. My guess is the guy bought the "cost effective" cast Fuchs copies which have a completely different ID.

You're golden and the best of luck with the project!

Rich

Posted by: Mueller Feb 14 2018, 12:09 PM

Good to know, might even fit my BBS Mahle 15x7s?

Posted by: Mitox Feb 14 2018, 12:14 PM

Does anyone have the 15" Fuchs wheel ID they can share?

Posted by: andys Feb 14 2018, 12:19 PM

I'm interested in the tricks to install.
Which Wilwoods? Piston sizes? What calipers are you running on the rear? Master cylinder diameter?
Thanks,
Andys

Posted by: burton73 Feb 14 2018, 12:30 PM

In the last 2 years, there has been a huge increase on what people are selling Factory Fuchs in 16In.

15in are much less.

Bob B

Posted by: SirAndy Feb 14 2018, 02:22 PM

I can schwing by and we can do a test fit, if you are interested ...

Posted by: Mueller Feb 14 2018, 02:39 PM

I'll be home all weekend doing something in the garage (off on Monday as well)

My twins asked about you a few weekends ago at EASY.. "is your German friend with the torn shirts going to be here?"

Posted by: Justinp71 Feb 14 2018, 03:34 PM

You will need a 1/8"npt x 10mm bubble flare adapter for the brakes lines (available at dune buggy shops or amazon). The mounting holes need to be drilled out from 7/16" to 15/32" (12mm).

I bought the superlites, but if you really want dust seals get the dynapro. Buy the version with the 3.5" mounting holes, they mount on later 911 3.5" struts (same struts the boxster calipers fit). If you have 20mm rotors buy the ones for .810" rotors. 24mm rotors you can get the 1.25" version, technically though that rotor is a little small for it, so I preferred the 20mm route. I am amazed at how the offsets are correct, fitting the rotors perfectly, no pad overhang or anything.

I have the 1.25" Bore (4 piston), similar overall area to the early 911 46mm M-caliper. The rears are 42mm rear 911 M calipers. I run a 19mm master cylinder. I expect it to brake much better with porterfield RS4 pads on all 4 corners, but I am waiting on some parts at the moment to complete this swap. I didn't want to go too big on the piston and upset the bias and have to convert to a 23mm master cylinder.

Not any reason why you can't buy the dynalites either at $130 ea from summit. Btw, you can buy them in many piston sizes.

Posted by: burton73 Feb 14 2018, 03:39 PM

What are you going to do for emergency brake?

Bob B

Posted by: Justinp71 Feb 14 2018, 03:44 PM

14.5" on my factory 911 fuch 15x7 wheels.

Posted by: Justinp71 Feb 14 2018, 03:45 PM

The PO install a 911 drum style emergency brake. I'm only replacing the front calipers with wilwood.

Posted by: Mitox Feb 14 2018, 05:51 PM

Thanks for the info. If Boxster brakes will fit a 15" Fuchs with 14.5" ID, then they should fit the Euromeister 16" wheel. My 16X7s and 8s have ~ 15.5" ID, though if the caliper is located inside the wheel too far, it may interfere with the wheel ID as it ramps down to a smaller ID beginning ~ 2.5" from the inside lip.

Posted by: mepstein Feb 14 2018, 06:05 PM

From what I’ve read on pelican, a lot of repro Fuchs don’t fit due to different inner dimensions than real Fuchs. The cast wheels require more material for the same strength and interfere with the larger calipers.

Posted by: mmascari Feb 14 2018, 06:12 PM

I just sold a pair of Euromeisters in the classifieds because they didn't fit on the inside. The caliper rubbed and would have required a spacer. This was on the rear with Boxster non-S calipers. I have Boxster calipers on both front and rear. I thought about a small spacer but with a narrow body the offset would have brought the tire even further out towards the fender and would have never fit.

Posted by: mmascari Feb 14 2018, 06:14 PM

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Posted by: Mitox Feb 14 2018, 06:20 PM

If I understand your situation correctly, it seems that the interference was at the inner section of ID that ramps down to a smaller ID. The caliper must have initially fit into the ID.

Is this correct?

I'm asking, because I want to make my Euromeister work in my flared fenders.

Thanks

Posted by: mmascari Feb 14 2018, 06:32 PM

Oh yeah, the calipers fit with a lot of room within the wheel diameter. The problem for me was the face of the caliper rubbed on the inside of the wheel, therefore required a spacer to push the wheel off the hub/rotor.

Posted by: Mitox Feb 14 2018, 06:44 PM

Thanks. I'm using flares, so will need a spacer anyway, so I think the Euros should be OK with Boxster brakes.

Posted by: 914Sixer Feb 14 2018, 07:01 PM

I bought the wheels and I am going to be using stock -6 calipers. Hoping I do not have to massage the rear fenders. According to the Maxilite Wheel site 16x7 with 23mm offset are good to go. I'll know in a couple of days.

Posted by: mmascari Feb 14 2018, 07:19 PM

Should be....a lot of guys running them with stock calipers.

Posted by: andys Feb 14 2018, 10:08 PM

Not sure who this question is directed to, but my e-brake is a Wilwood mechanical spot.
Andys

Posted by: wndsrfr Feb 15 2018, 05:12 AM

Ooohhhhh....I like...I need this....another photo with mounting detail? Bellcrank source?

Posted by: mepstein Feb 15 2018, 06:05 AM

Summit sells bellcranks in different sizes

Posted by: Freezin 914 Feb 15 2018, 07:33 AM

For you guys running the boxster calipers, are these track cars? Sixes? I was always told the stock calipers were plenty good provided they were in good working order with quality shoes.

Posted by: mepstein Feb 15 2018, 08:11 AM

Stock is great on a four. Sixes are heavier. V8's, flared cars, ect, usually want more brake. It's not always a - have to. Sometimes its a - want to.

Posted by: Steve Feb 15 2018, 08:15 AM

I’m running them front and back with Rich’s kits. My car is street and some Auto cross. Yes it’s overkill, but they look good, brake awesome, cheap and plentiful, but are much newer than the other brakes. I had problems with my rebuilt 914-6 rear calipers. It was easier to update to a 911 emergency brake.

Posted by: JmuRiz Feb 15 2018, 08:40 AM

Good to know they work with 15" too...wonder if I can put my early 911 hubcap wheels on or my 951 alumn spare tire wheels on there for a total sleeper look

Posted by: Mitox Feb 15 2018, 09:52 AM

I've seen Rich's kits referred to several times, but I'm having trouble finding them. Is there a website he runs, or does someone else market them for him?

Posted by: mepstein Feb 15 2018, 10:02 AM

A914guy@ail.com

Great guy. He will email you info if you reach out to him. He has a good number of parts available.

Posted by: Mitox Feb 15 2018, 10:12 AM

Thanks. To be sure though, is the email AOL or AIL?

Posted by: burton73 Feb 15 2018, 10:17 AM

AOL.com

Posted by: gothspeed Feb 15 2018, 10:23 AM

stock brakes with good pads is plenty for general and aggressive street use. I will be doing vented front rotors at minimum and if ambition allows, add some alloy calipers.

Posted by: mepstein Feb 15 2018, 10:42 AM

Yea, sorry. AOL

Posted by: andys Feb 15 2018, 12:24 PM

See my build thread:
http://www.914world.com/bbs2/index.php?showtopic=204625&st=20
Start at post #32, then post #37.

Andys

Posted by: SirAndy Feb 15 2018, 12:40 PM

Pretty much the same story here ...

Posted by: Freezin 914 Feb 16 2018, 07:15 AM

It’s official, I am interested in doing this upgrade on my car. After reading this thread and seeing all your input it has me curious. Can you all tell the rest of us best place to source parts, mounting kits, any tips to streamline the install?

Posted by: mepstein Feb 16 2018, 08:25 AM

914guy@aol.com
Rebel racing

Remember, this puts pretty heavy 911 Carrera rotors on your hubs so unless you have an engine with some HP, you will accelerate slower.

Posted by: Mueller Feb 16 2018, 11:41 AM

There are a few videos showing this on youtube with before and after numbers. I'm sure there is a hp/tq number that your car could be putting down and not notice the extra weight. If a stock 4 banger I'm sure you'd notice it

Posted by: Justinp71 Feb 16 2018, 11:55 AM

That was another advantage of the wilwoods, they make a .810" version that works perfectly with the 83 and earlier 20mm vented rotors.

Posted by: Freezin 914 Feb 17 2018, 07:48 AM

Planning on building a 2056 for the car, not sure if that would constitute enough hp, but again, after reading this thread, I like the idea of newer, better brakes.

Posted by: burton73 Feb 17 2018, 09:30 AM

So I had a 74 2.0 in 79. Put in a complete fresh 911sc Front suspension and light wheels. It felt great in handling and stopped great. Seemed just as fast.

Bob B