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Help fitting 944 cookie cutters on 931

 
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kelkelio  



Joined: 06 Aug 2008
Posts: 16
Location: Fremont, CA

PostPosted: Sat Nov 22, 2008 11:27 am    Post subject: Help fitting 944 cookie cutters on 931 Reply with quote

Hi Guys,
I need some of your wisdom and knowledge. I got a great deal on a set of 944 cookie cutters with new 215/60/15 tires. Put them on my '81 931 and of course they stick out too far. The fronts are okay and do not rub but the rears rub badly. We found about a 1" spacer on the rears and if we remove it - the tires fit inside nicely but that leaves the front looking ridiculous.
Would rolling the rear fenders be enough to give me clearance if I keep the spacers on?
What other options should I consider?
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2Fast  



Joined: 09 Dec 2007
Posts: 459
Location: Klamath Falls, OR

PostPosted: Sat Nov 22, 2008 11:44 am    Post subject: Reply with quote

I'm not sure about rolling the fender...I seem to recall someone on the board doing it. But, Something a lot of people around the board do when they get wide tires, is that they take the flairs off of 944's and attach them to the 924. Its a lot of work for the rear flairs. A lot of cutting and welding. As for the front there are like 15 or so bolts that hold a 944 flared fender in place, and it easily attaches to a 924. No modification required. Thats the only easy mod to help the front wheels fit. If you went through GT-racing.com you could buy yourself some fiberglass/carbon fiber Carrera GT rear flares. From what I understand, they are easier to attach to the 924 than a factory 944 flair. I'm not sure if this is the answer you are looking for, but I hope it helps.
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1979 Porsche 924 NA 5spd
1979 Parts Porshce 924 NA 5spd
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Smoothie  



Joined: 01 Jan 2003
Posts: 8032
Location: DE (the one near MD, PA, NJ)

PostPosted: Sat Nov 22, 2008 11:58 am    Post subject: Reply with quote

Do both rears rub with the new wheels? -or just the left-rear?
I ask because there's a common oddity with 924 bodies - there's a bit less room at the left-rear, so that one can be a problem while the right side is ok.

When I first tried to fit my 911 Fuchs 5-spokes, the fronts rubbed on sharp turns, and the rears rubbed when you'd hit a bump. These wheels, with their different offset, left them sitting about [16]mm further out than the stock wheels. My fix for the front was to fit 220lb stock height springs and to change to a thicker stabilizer bar. For the rear, I installed coil helper springs that fit over the shocks, plus a rear stabilizer bar. -And to make up for the discrepancy between rear left and right (to eliminate the left side rubbing), I changed to a thinner spacer at the rear-left only. There I use two .25" spacers together for a total of .5" spacing to replace the stock 1" spacer. Small problem - with this arrangement, the bolts are too long for the nuts, so since they're made of a soft metal, I just reinstalled the nuts and let the bolts pop through the ends of the nuts as they were tightened - then removed each nut and used a drill-mounted countersink bit to chamfer the ends of the holes that were created, so it doesn't look toooo stupid.
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'82 924T, US version, dark green metallic, 5 speed Audi 016G gearbox


Last edited by Smoothie on Mon Nov 24, 2008 10:34 pm; edited 1 time in total
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kelkelio  



Joined: 06 Aug 2008
Posts: 16
Location: Fremont, CA

PostPosted: Sat Nov 22, 2008 12:35 pm    Post subject: Reply with quote

2 Fast thanks for the help - I am trying to avoid doing body work, the exterior is in good shape. My husband on the other hand, can hardly wait to put on some fender flares and make it a race car.

Smoothie - I am so happy to hear about the left side rubbing on these models. I assumed it was from the drivers added weight.
Is it possible to buy shorter lug studs?
Are the 220lb springs and stabilizer bars from another model Porsche? Where could I find these items?
I am trying to decide if it's worth all the trouble. On one hand I would like to keep it original with the spider webs but the cookies make it look like more like a sports car. IMHO
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alexvex  



Joined: 31 Jul 2006
Posts: 420
Location: Seattle, WA (from Indiana)

PostPosted: Sat Nov 22, 2008 1:23 pm    Post subject: Reply with quote

Cookie cutters are early offset wheels. Since 924's are narrow body they have early offset suspension but require late offset wheels. Unless you are putting on 944 fenders/rear flares then there is no way for you to make them fit right. Sell them and buy some late offset wheels...about the only thing you can do.
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--Alex--
1992 Porsche 968 (VW 2.5L I5 Turbo swap in the works)
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2010 Touareg TDI
Past Pcars: 80 931, 87 924S, 87 951
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kelkelio  



Joined: 06 Aug 2008
Posts: 16
Location: Fremont, CA

PostPosted: Sat Nov 22, 2008 2:21 pm    Post subject: Reply with quote

Thanks Alex - can you tell me what you mean by late offset?
I was looking at a set of wheels from a 95 911 but didn't think they would work. Would those be considered late offset?
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Smoothie  



Joined: 01 Jan 2003
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Location: DE (the one near MD, PA, NJ)

PostPosted: Sat Nov 22, 2008 3:11 pm    Post subject: Reply with quote

I think he's talking specifically about early 944 and late 944 offsets - late meaning 944S2, and possibly 924S ('87-'88 ) as well. Late 911 might be something completely different.
I've seen some early 924 examples with cookie cutters, so apparently it's do-able. -But I don't know what their offset is and exactly how far they stick out, so can't say if what I did to fit the old 911 Fuchs would work for the cookie cutters. -But I got the front 220lb springs and the front and rear stabilizer bars new and caught them on sale/clearance, bought at different times. The rear helper springs were from JCWhitney.

The front springs show here as part number 904777 - http://www.automotion.com/productpage.aspx?cid=19&sid=308&pid=106765

You probably could get shorter bolts for the rear, but it's way easier and also cheaper to just pop the bolts through the ends of the nuts. I use a wheel lock on each wheel, so only had to "pop through" 4 of the nuts. I don't even know if this would be needed with cookie cutters - maybe the part of the wheel that the bolt passes through is thicker, making it unnecessary.

Of course if your only problem is rubbing at the rear-left, take care of that with thinner spacing, then take it for a drive - if other problems reveal themselves (such as fronts rubbing on sharp turns, and rears rubbing from bumps), deal with them as necessary..
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alexvex  



Joined: 31 Jul 2006
Posts: 420
Location: Seattle, WA (from Indiana)

PostPosted: Sun Nov 23, 2008 3:00 am    Post subject: Reply with quote

Late offset is around 52mm. Early offset is around 23mm.
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--Alex--
1992 Porsche 968 (VW 2.5L I5 Turbo swap in the works)
1995 Audi 90 Quattro Sport (4.2L V8 Swap)
2010 Touareg TDI
Past Pcars: 80 931, 87 924S, 87 951
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Maybe924  



Joined: 14 Aug 2007
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Location: New London, CT

PostPosted: Sun Nov 23, 2008 5:42 am    Post subject: Reply with quote

The Cookie Cutters originally fit to non-Carrera 911s will fit 924s without modification. These wheels are 6X15.

If you want staggered wheels you can fit the (6X15) Cookies on the front and (7X15) Cookies on the back with the 21mm spacer removed and shorter lug bolts installed.

Or if its a 924S than you don't have rear spacers to remove so you'll need to run the 6X15s all around.
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Cedric  



Joined: 27 Aug 2004
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Location: Sweden

PostPosted: Sun Nov 23, 2008 10:04 am    Post subject: Reply with quote

7x15s all around this car, get less height and width on the tires and it might fit. This is with 205/50 toyo r888...


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kelkelio  



Joined: 06 Aug 2008
Posts: 16
Location: Fremont, CA

PostPosted: Mon Nov 24, 2008 10:25 am    Post subject: Reply with quote

Thanks guys, I knew I could count on you to come up with some ideas.
Here's the plan: We are going to replace the rear left side spacer with the 2 1/4" spacers as Smoothie suggested. Parts heaven is nearby so we will get shorter lug studs. We've added the coil helpers to the front.

Should be done tomorrow so I'll let you know how it goes.
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Smoothie  



Joined: 01 Jan 2003
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Location: DE (the one near MD, PA, NJ)

PostPosted: Mon Nov 24, 2008 10:43 pm    Post subject: Reply with quote

You're dealing with a greater difference in offset (23 vs. 52 (=29mm)) than I was (36 vs. 52 (=16mm)), so I'd be suprised if what I did would solve the problem in your situation.
http://www.924board.org/viewtopic.php?t=21373&start=11

Also, those early 924NA's I've seen with cookie cutters obviously had suspension mods including a swap to 5-bolt suspension + who knows what...
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kelkelio  



Joined: 06 Aug 2008
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Location: Fremont, CA

PostPosted: Tue Nov 25, 2008 2:25 am    Post subject: Reply with quote

I have a turbo with the 5 bolt suspension and disc brakes all around. My husband is pretty determined (stubborn) to make these work. I think by the end of the day we may just swap the tires to the spider webs and call it a day.
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kelkelio  



Joined: 06 Aug 2008
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PostPosted: Tue Nov 25, 2008 5:02 am    Post subject: Reply with quote

Thanks, Smoothie.
After reading your post we changed our plan a bit. We are going to remove the original spacers and run a 1/4" spacer on the right side to make it even with the left, roll the fenders and take a test drive. If that works then we'll change the lug studs. If further adjustment is needed we'll go with adjustable air shocks. Does that sound reasonable?
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