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> Another Sti build., Building my 914GTSTI
914GTSTI
post Feb 9 2015, 02:06 PM
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A little more work on the Boxster to 108 axle. I'm not going to use a spacer. So I cut the spline about .112". (now I'm going to here it?)

After I get the trailing arms cleaned up I will put it together.

(IMG:http://www.914world.com/bbs2/uploads_offsite/i916.photobucket.com-8123-1423512413.1.jpg)

(IMG:http://www.914world.com/bbs2/uploads_offsite/i916.photobucket.com-8123-1423512413.2.jpg)

The spline on the Boxster hub will need to be cleaned up a little.

Randy
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914GTSTI
post Feb 9 2015, 05:35 PM
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Well you will need a spacer. I forgot the castle nut ! My bad. (IMG:style_emoticons/default/chair.gif)
So I made one. I will still shorten the spline . Want the spacer to sit very close to the shaft. The space could be stepped but I feel it will hold its shape better flat. Should torque up better ?

(IMG:http://www.914world.com/bbs2/uploads_offsite/i916.photobucket.com-8123-1423524917.1.jpg)


(IMG:http://www.914world.com/bbs2/uploads_offsite/i916.photobucket.com-8123-1423524917.2.jpg)

You could say its a thick washer ? (IMG:style_emoticons/default/lol-2.gif)
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914GTSTI
post Feb 10 2015, 09:16 PM
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A stiffey ?

(IMG:http://www.914world.com/bbs2/uploads_offsite/i257.photobucket.com-8123-1423624618.1.jpg)

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914GTSTI
post Feb 11 2015, 12:40 PM
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I now have 5x130 and a parking brake ! (IMG:style_emoticons/default/piratenanner.gif)

(IMG:http://www.914world.com/bbs2/uploads_offsite/i916.photobucket.com-8123-1423680025.1.jpg)

(IMG:http://www.914world.com/bbs2/uploads_offsite/i916.photobucket.com-8123-1423680025.2.jpg)

(IMG:http://www.914world.com/bbs2/uploads_offsite/i916.photobucket.com-8123-1423680025.3.jpg)

Now on to some welding ! (IMG:style_emoticons/default/beerchug.gif)
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Brian Mifsud
post Feb 11 2015, 02:27 PM
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QUOTE(914GTSTI @ Feb 5 2015, 03:27 PM) *

I, cleaned up a 914-4 brake rotor and bolted (one hole) to the Boxster hub. It almost self centers. I then tightened up the wheel lug. Used a transfer punch to mark the 5 bolt pattern. Will drill them after getting a bit for a stud mount ? I want to do a mock up so I'm using what I have. Anybody try using allen bolts for wheel studs ? In dirt racing it is a cheep way to go . With some luck the stub's will be here in a day or two ?

(IMG:http://www.914world.com/bbs2/uploads_offsite/i916.photobucket.com-8123-1423164673.1.jpg)


Randy


Hi Randy,
I'd be alot more cautious about locating those holes. Using a transfer punch and the hub both introduce significant error. That's a job for a milling machine with a rotary table in my opinion. Otherwise the compounding tolerances could introduce some very unwelcome high speed wobble...
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914forme
post Feb 11 2015, 02:47 PM
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[/quote]

Hi Randy,
I'd be alot more cautious about locating those holes. Using a transfer punch and the hub both introduce significant error. That's a job for a milling machine with a rotary table in my opinion. Otherwise the compounding tolerances could introduce some very unwelcome high speed wobble...
[/quote]

Its not the hub he's drilling, its the rotors. Carry on, it should not be an issues. Just set two points, mark and drill. The lugs do not place the rotor in a perfect alignment. The counter sunk screw does that. Just make sure one of them matches up. And a lug bolt matches up, and go for it.
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914GTSTI
post Feb 11 2015, 06:32 PM
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Yes I will use my mill.

I now have one stiffie ! (IMG:style_emoticons/default/lol-2.gif)

(IMG:http://www.914world.com/bbs2/uploads_offsite/i257.photobucket.com-8123-1423701127.1.jpg)

(IMG:http://www.914world.com/bbs2/uploads_offsite/i257.photobucket.com-8123-1423701127.2.jpg)

(IMG:http://www.914world.com/bbs2/uploads_offsite/i257.photobucket.com-8123-1423701127.3.jpg)

Just need to weld the end.

Is their good way to pull the bushing ? And replace it with rubber or ??. Will be going some track and fast driving.

Thanks, Randy
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Brian Mifsud
post Feb 12 2015, 11:11 AM
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[quote name='914forme' date='Feb 11 2015, 12:47 PM' post='2144938']
[/quote]

Hi Randy,
I'd be alot more cautious about locating those holes. Using a transfer punch and the hub both introduce significant error. That's a job for a milling machine with a rotary table in my opinion. Otherwise the compounding tolerances could introduce some very unwelcome high speed wobble...
[/quote]

Its not the hub he's drilling, its the rotors. Carry on, it should not be an issues. Just set two points, mark and drill. The lugs do not place the rotor in a perfect alignment. The counter sunk screw does that. Just make sure one of them matches up. And a lug bolt matches up, and go for it.
[/quote]


My dad was a Machinist, and I make my living as a Mechanical Engineer. I've always been "belt AND suspenders" so any advice I give is coming from "overkill is just enough"....... My name is Brian and I have TRUST issues..... (IMG:style_emoticons/default/hissyfit.gif) (IMG:style_emoticons/default/beer3.gif) (IMG:style_emoticons/default/biggrin.gif)
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914GTSTI
post Feb 12 2015, 05:57 PM
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New paint.

(IMG:http://www.914world.com/bbs2/uploads_offsite/i916.photobucket.com-8123-1423785452.1.jpg)

(IMG:http://www.914world.com/bbs2/uploads_offsite/i916.photobucket.com-8123-1423785452.2.jpg)

Hello, my name is Randy and I have a car building problem ! (IMG:style_emoticons/default/blink.gif)
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914GTSTI
post Feb 14 2015, 12:56 PM
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Looking at the rotor shield and found some cracking at the mounting holes. So I brazed some AN washers and should be go to go ?

(IMG:http://www.914world.com/bbs2/uploads_offsite/i916.photobucket.com-8123-1423940164.1.jpg)

Randy
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914GTSTI
post Feb 14 2015, 02:35 PM
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I was doing some welding and I saw this on the bench. So it got welded also. May not need it but ? (IMG:style_emoticons/default/idea.gif)

(IMG:http://www.914world.com/bbs2/uploads_offsite/i916.photobucket.com-8123-1423946115.1.jpg)

(IMG:http://www.914world.com/bbs2/uploads_offsite/i916.photobucket.com-8123-1423946116.2.jpg)

(IMG:http://www.914world.com/bbs2/uploads_offsite/i916.photobucket.com-8123-1423946116.3.jpg)
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914GTSTI
post Feb 16 2015, 12:44 PM
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All installed. 930 CV, cut Boxster Hub, and a 108 MM stub. Stock brake caliper and rotor drilled 5x130.

(IMG:http://www.914world.com/bbs2/uploads_offsite/i916.photobucket.com-8123-1424112278.1.jpg)

(IMG:http://www.914world.com/bbs2/uploads_offsite/i916.photobucket.com-8123-1424112278.2.jpg)

(IMG:http://www.914world.com/bbs2/uploads_offsite/i916.photobucket.com-8123-1424112278.3.jpg)

Randy
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914GTSTI
post Feb 18 2015, 12:10 PM
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Cleaned up the front cross bar and added some paint.

(IMG:http://www.914world.com/bbs2/uploads_offsite/i916.photobucket.com-8123-1424283052.1.jpg)

Been thinking maybe I will test fit the coil-over idea and see if it will work ? Also thinking about the German VW vented rotors with the 5x130 ? I can get them for $450 +- with shipping. I'm finding the 911SC front ends are big $$$$ .

Back when I started this I could have had all for $750. Wish I had gotten it then. (IMG:style_emoticons/default/chair.gif)
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914GTSTI
post Feb 18 2015, 05:12 PM
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I know the manual said to drive out the bearing and the hub but it beats the hub a little. So I built 2 drivers.

(IMG:http://www.914world.com/bbs2/uploads_offsite/i916.photobucket.com-8123-1424301156.1.jpg)
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914GTSTI
post Feb 19 2015, 07:38 PM
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Installed the crossbar and found the 11/1971 and the 09/1974 don't use the same lower ball joint. (IMG:style_emoticons/default/headbang.gif) So I got the 74 lower arm and installed it.

Test fit the coil-over idea I have and it is going to be very close. With stock Alum. wheels ! Think a 1/4" spacer would be best with stock fenders. Tires in photos are 195/60r15'

I will be adding the steel GT flairs and 7 or 8" front wheels and 8 or 9" rear. At this point I'm not sure what spacers if any will be needed and foresure don't know with the coil-over's in the front ?

(IMG:http://www.914world.com/bbs2/uploads_offsite/i257.photobucket.com-8123-1424396337.1.jpg)

(IMG:http://www.914world.com/bbs2/uploads_offsite/i257.photobucket.com-8123-1424396337.2.jpg)

(IMG:http://www.914world.com/bbs2/uploads_offsite/i257.photobucket.com-8123-1424396337.3.jpg)

(IMG:http://www.914world.com/bbs2/uploads_offsite/i257.photobucket.com-8123-1424396337.4.jpg)

(IMG:http://www.914world.com/bbs2/uploads_offsite/i257.photobucket.com-8123-1424396337.5.jpg)

But it looks like it will work ! (IMG:style_emoticons/default/piratenanner.gif)
Randy
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914GTSTI
post Feb 19 2015, 07:43 PM
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And no, i'm not going to use a 300# spring on the front. And some idiot mounted directional tire on backwards ! What a dip stick.
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CptTripps
post Feb 25 2015, 02:22 PM
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Great job on the front/rear suspension parts. I powder-coated all of mine, and I wish I wouldn't have.
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914forme
post Feb 25 2015, 02:55 PM
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QUOTE(914GTSTI @ Feb 19 2015, 08:43 PM) *

And no, i'm not going to use a 300# spring on the front. And some idiot mounted directional tire on backwards ! What a dip stick.


I was going to ask if you had calculated out the actual spring rate compared to the torsion bars you are replacing.

Stock 911 19mm is ~110 Lb/in These are an upgrade to a 914 btw.
21 mm ~ 175 Lb/in
22 mm ~ 210 Lb/in
23 mm ~ 250 Lb/in
24 mm ~ 300 Lb/in
25 mm ~ 350 Lb/in

I never calculated the stock 914-4 bar as I never ran them. I rounded the above numbers to match QA1 springs you can buy. You could go variable, as they make 100-200lbs/in and a 140-250lbs/in, and a 175-350lbs/in. Never thought about using them as I have always gone linear.
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914forme
post Feb 25 2015, 07:12 PM
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Stock 914 T-bars are ~90 lbs/in just to add that little bit. Again I rounded to a spring you might be able to get from Qa1
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914GTSTI
post Feb 26 2015, 03:35 PM
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Thanks.

I was thinking that I would start with 200 F and 175 rear ?

I want to get the chassis with the new motor/trans and stuff first then check it on the scales. May give me a better idea about where to start ?
Randy
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