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Posted by: mharrison Sep 29 2003, 09:46 PM

I am planning to drill rotors for 5-lugs. Does anyone have a source for 914 rotors that aren't drilled at all? I think there would be a great market for this, as well as 5-stud rotors for the 914. (Oh yeah, any source for these either)? I'm basically looking for a 5-lug with no holes.

-Matt

Posted by: Mueller Sep 29 2003, 09:56 PM

if you can wait a week or so, I'll have pricing on a set of new hubs that allow you to convert to 5-lug and have 911 vented rotors without having to replace any other suspension component on the front...if you can replace front wheel bearings, then you can easily do this conversion.(uses 914/4 front wheel bearings)

(i know it shows 4-lug, but 5-lug is planned as well)

Posted by: Korijo Sep 29 2003, 10:25 PM

DAMMIT !! Got to budget/generate more parts $$$

Posted by: nebreitling Sep 29 2003, 11:52 PM

bad ass!

are you making these yourself, or did you design them>

nathan

Posted by: Bleyseng Sep 30 2003, 09:10 AM

So what caliper will we have to run with that? Are you making spacer blocks for the stock calipers?


Geoff

Posted by: jdogg Sep 30 2003, 09:17 AM

Yeah, what he said....stock calipers?

Posted by: mharrison Sep 30 2003, 10:04 AM

Let me know when these are available.

Posted by: ArtechnikA Sep 30 2003, 10:07 AM

there is no lack of vented-rotor 911 'M' calipers...

i think i've got a couple of sets, one for sure. another one if you count the set i'm taking off the 911 this winter to install aluminum 'S' calipers ...

Posted by: gklinger Sep 30 2003, 10:19 AM

Mike, in 4 lug, will these be drilled for studs instead of threaded for bolts? I want to keep my 4 hole Mahles, but *really* want to go to studs.

Posted by: Scott Sep 30 2003, 11:32 AM

Mike,

Will I be able to bolt up late (steel) 911S calipers or would I need adaptors?

How's my suspension coming? Not in a hurry just asking.

Posted by: Mueller Sep 30 2003, 11:43 AM

1)Calipers= still looking into this, a few options
*Stock with spacers
*M calipers (available cheap, since the 911 guys upgrade to bigger units)
(anyone have a set to loan me???)
*Boxster Calipers
*aftermarket calipers (not anytime soon, I want to focus on Porsche caliper alternatives first)

2)5-lug = studs only

3)4-lug = both studs and threaded versions are being looked at

Scott,

The middle of next week your suspension should be finished. Those calipers have a 3.5 inch spacing for the 911 struts, not too sure if they can be "tweaked" to fit the /4 struts. Do you have 914 or 911 struts??

Posted by: Scott Sep 30 2003, 11:52 AM

Mike,

I have both sets of struts but heres the rub. The 914 ones are late ('76) and have the solid bottom. The 911 are 911T and have the split (pinch) bottom. I want to install the soild bottom ones for strength and safety. So...I can either wait for yours and hopefully put the steel 911S calipers on my late 914 struts or I will have to buy a new set of 911 struts (either late S or early Carrera).

Thanks for the update on the suspension.

Posted by: ArtechnikA Sep 30 2003, 12:25 PM

Sportomatic cars came with aluminum calipers, so you have a few more options available. i used '69 911T Targa Sporto (!) struts on my /6 because they were the only ones with the combination of 3,5" caliper mount spacing and Boge top thread, so i could use my Boge-threaded externally adjustable Koni dampers...

Posted by: thesey914 Sep 30 2003, 01:26 PM

Mike, If your hubs allow 911 vented discs running on standard 914 wheel bearings then I reckon you'll have massive interest.
Are these billet with all the spot facing machined for the studs?
So the 911 "M" callipers have the same 3.5 bolt measurement as the stock callipers?

Posted by: ArtechnikA Sep 30 2003, 01:46 PM

911 'M' calipers have the same -3"- mounting centers as the stock calipers...

911 'S' and 'A' calipers use 3,5" mounting spacing...

Posted by: thesey914 Sep 30 2003, 02:08 PM

Cheers for the clarification Rich

Posted by: Brad Roberts Sep 30 2003, 02:29 PM

Hum... sold exclusively thru.....




B

Posted by: fiid Oct 1 2003, 12:13 PM

Killer Engineering Ninja Monkeys Do Exist!!!

This is awesome, Mike! Good work.

Fiid.

Posted by: thesey914 Oct 9 2003, 01:55 PM

*BUMP* -any progress??


Attached image(s)

Posted by: Brad Roberts Oct 9 2003, 02:01 PM

Scott,

If your following along at home on this... USE the 911 struts with the 3 inch bolt spacing. Anything else you use throws you into a totally different class with PCA and SCCA in our regions. Those pinch bolts have NEVER failed. Porsche switched to a different design because the ball joint supplier couldnt keep up with demand back then.

You own a 4cyl car. Its doesnt need anything larger than a 911 M caliper/pads.


B

Posted by: Mueller Oct 9 2003, 02:19 PM

I'm working on them, right now I've got to decide if I'm going to go with:

1) Bolt on 911 "M" calipers, there are tons of these out there not being used since some 911 guys upgrade to bigger calipers

2) Stock /4 calipers, but with two spacers, one would split the caliper, the other one would be to properly align the caliper to the rotor, new bolts would be needed: for the caliper it self and to bolt the caliper to the strut.

Also, I see no reason why the BMW caliper wouldn't work, as well as the 4 piston Volvo caliper.

Posted by: URY914 Oct 9 2003, 02:24 PM

Mike,
What's up with those Superlights you bought a little while ago?

Paul

Posted by: ArtechnikA Oct 9 2003, 02:25 PM

IMO - do this first.

lower cost , fewer pieces, don't have liability issues of people dismantling their own calipers... people will buy a pair of the plentiful M calipers before they'll risk opening their working /4 calipers. this also gives them a working set of stuff - disk/hub and caliper - they can fall back to if there are any issues with the conversion or thsy just get cold feet or run out of time...

do the other stuff later, as demand dictates...

i have at least one set of M calipers - two i think - in a box on the shelf; there's no lack of them. get these parts in the market and on the street, establishing cashflow to develop the other options...

just my thoughts, WTFDIK ...

Posted by: Mueller Oct 9 2003, 02:33 PM

they ended up being a total waste of time and money

The problem is that I bought Dynalites instead of the Superlites, I guess I looked at the wrong spec sheet and thought they work (easily)

I see two options to use the Dynalites:

1) to use stock diameter rotor (solid or vented course), one would have to cut the mounting ears on the strut and modify them, this I would not want to do.

2) If larger diameter rotors are installed, the Dynalites would would, but we are talking about going up from the stock dia. of 11" to 12" or 13" rotors, not a bad thing, but not something I want to do right now........

I have not looked at the Superlites too closely, but the Tech at Wilwood told me that these are popular for the Porsche racers. On my to-do list..........

Posted by: Brad Roberts Oct 9 2003, 02:44 PM

That NEVER happens. I cant count how many times I went down the Wilwood path and always ended up with a stock type caliper.


B

Posted by: URY914 Oct 9 2003, 02:46 PM

I studied the Superlite spec sheet and it looks like it could work.
But, I got other things to do too
My car stops fine, just needs to go faster.
When I run outta brakes I'll look at them closer.

Paul

Posted by: rdauenhauer Oct 9 2003, 05:20 PM

Heres a twist Mike, What about applying a similar setup IE: Vented /6 size rotor, to 911 3.5" spindals (so I can retain my s-calipers) but keep it 4-LUG (Wheels have got to stay ) Possible? Easy right?

Posted by: John Jentz Oct 28 2003, 04:21 PM

Hey, Mike, I think these http://www.csp-shop.de/cgi-bin/shop2/shop_main.cgi?func=start&wkid=5627041627 might fit. In the USA, Classic & Speed Parts, Arcadia, CA 626-445-0108.

Posted by: Aaron Cox Oct 28 2003, 06:13 PM

they sell the 914/911 specific rotors- but not in "blanks"

Posted by: mharrison Oct 28 2003, 09:50 PM

Posted: Sep 29 2003, 07:56 PM

So have you made any progess on this?

Posted by: Brad Roberts Oct 29 2003, 02:57 AM

We met with a person who *might* tool up and make them for us today. He should get Mikes drawings before the end of the week.


B

Posted by: 914Timo Oct 29 2003, 04:36 AM

Mueller, do you know how heavy those Volvo calipers are. They are big and they are cast iron. IMHO, they are ok for slow family cars, not ok for our cars.

Posted by: gklinger Nov 20 2003, 06:43 PM

Any progress on the vented rotors? Just remounted my wheels with new Yokohama AVS ES100s, and had a bolt hole strip out on the front right. Crap! Sure would rather go this route than replace the stock rotor, if they're going to be available soon...

Posted by: Brad Roberts Nov 21 2003, 01:16 AM

Garry,

They will be available soon but I plan to test them (thoroughly) before a full blown release. It will be a month or so AFTER you see them posted here on a car and working.


B

Posted by: gklinger Nov 21 2003, 08:57 AM

Thanks Brad. I definitely want to go this route when these are available. Four lug with studs. Take your time, testing is Good. In the meantime, I guess it's new stock rotor time.

Posted by: mharrison Nov 21 2003, 10:42 AM

I'm in for a set with 5 studs in the 911 pattern when they're ready!

-Matt

Posted by: Brad Roberts Nov 21 2003, 02:39 PM

This design has already been proven.. so not much testing is needed.

Hang in there. These are going to be trick.


b

Posted by: nebreitling Nov 21 2003, 04:50 PM

I'm in for a set!

can't wait for this upgrade.... and some 5-lug wheels

n

Posted by: Mueller Nov 21 2003, 05:28 PM

...for those freaks out there, odd ball bolt patterns such as 4x100 can be done as well oh wait, that is the bolt pattern I have on my 914

Posted by: Aaron Cox Nov 21 2003, 05:54 PM

can you make 5 stud studded rears? or is it better to just drill and stub the hub and run 914/6 rear rotors?

Posted by: rdauenhauer Nov 21 2003, 06:37 PM

HERE HERE! Thats me too. I have the late model 3.5" spaced Koni Reds but I want VENTED fronts AND retain my Mahles
Did you say Freak

Posted by: Brad Roberts Nov 21 2003, 06:45 PM

I really dont see any reason why this cant be done. I think its a good idea.


B

Posted by: Joe Ricard Nov 21 2003, 07:20 PM

Got my finger on the pay pal button just need the word.

Posted by: Brad Roberts Nov 21 2003, 07:22 PM

It will probably be one of the first things we sell in the new Ecommerce section.


B

Posted by: nebreitling Nov 21 2003, 07:49 PM

actually, 4x100 would be even cooler! ricey rims, here i come!!

i'm getting so excited for these i can barely contain myself!!!

Posted by: Mueller Nov 21 2003, 08:01 PM

I thought about having brand new rear hubs/flanges made (any bolt pattern), but they'd be in the $300 (ea) range

Heat treated 4130....the design is simple, it's cutting the splines that is expensive and only a few shops can do it....

Posted by: thesey914 Nov 22 2003, 02:10 AM

What material are the fronts going to made of? 4130, T45, En6 or some alloy?

Posted by: Mueller Nov 22 2003, 12:03 PM

The fronts are currently spec'd to be made from 7075-T6
....factory 911 hubs are cast aluminum (A356???)

Don't worry, applications using stock /4 lug bolts will not be threading directly into the aluminum. Most applications will be studded.

Posted by: thesey914 Nov 22 2003, 04:08 PM

T6. Great, less weight -less balance problems

Posted by: thesey914 Dec 2 2003, 02:10 AM

*bump*
any progress?

Posted by: Brad Roberts Dec 2 2003, 02:15 AM

We are currently getting bids for the project. I think it has been narrowed down to two different manufacturers. A prototype should be done by the end of this week.


B

Posted by: Mueller Dec 2 2003, 02:21 AM

I'm waiting for one more bid as well , I'll call them in the morning..........

I guess it's time to go home, I'm still in the office