Syncro Rings, Specs anyone? |
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Syncro Rings, Specs anyone? |
tracks914 |
Jan 10 2005, 08:34 PM
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#1
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Canadian Member Group: Benefactors Posts: 2,083 Joined: 15-January 03 From: Timmins, Ontario, Canada Member No.: 153 Region Association: None |
I need to put a couple of syncro rings in my tranny. (1st and 2nd) They look pretty simple but whats the scoop on them? Why would a brass ring with a notch cost so much to make?
I am a machinist and can make my own pretty easily if I had the specs on new ones, but is it the material that they are made of that makes them so expensive? Are they bronze or brass or what? |
SpecialK |
Jan 11 2005, 03:17 AM
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#2
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aircraft surgeon Group: Benefactors Posts: 3,211 Joined: 15-March 04 From: Pacific, MO Member No.: 1,797 |
Not sure of the material, but the Haynes indicates that they're Molybdenum coated. New O.D. is shown as 76.12 mm to 76.48 mm.
If this doesn't help, at least you're bumped up so a real P-car mechanic can hook you up with more detailed info. (IMG:http://www.914world.com/bbs2/html/emoticons/wink.gif) |
MattR |
Jan 11 2005, 03:49 AM
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#3
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Advanced Member Group: Members Posts: 3,279 Joined: 23-January 04 From: SF Bay Area Member No.: 1,589 Region Association: Northern California |
High precision? 60 bucks doesnt seem too bad for a high precision brass/bronze short run piece. Its not like 300 bucks for a set of main bearings for a 912...
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JWest |
Jan 11 2005, 06:48 AM
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#4
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Senior Member Group: Members Posts: 1,662 Joined: 6-January 03 From: Fort Worth, TX Member No.: 97 Region Association: None |
The syncro rings are steel with the afore mentioned molybdenum coating on the outer surface.
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tracks914 |
Jan 11 2005, 06:31 PM
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#5
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Canadian Member Group: Benefactors Posts: 2,083 Joined: 15-January 03 From: Timmins, Ontario, Canada Member No.: 153 Region Association: None |
Are they all this composition? I have seen a variation in the price from $50 from "blondde" formerly "partwerks" on ebay to $80 in all the online P catalogues. |
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Dr Evil |
Jan 11 2005, 06:37 PM
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#6
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Send me your transmission! Group: Members Posts: 22,995 Joined: 21-November 03 From: Loveland, OH 45140 Member No.: 1,372 Region Association: MidAtlantic Region |
Not too long ago they were $20-25 a piece. It is all about market demand/supply. The exterior coating must be rough as well.
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bondo |
Jan 11 2005, 06:40 PM
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#7
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Practicing my perpendicular parking Group: Members Posts: 4,277 Joined: 19-April 03 From: Los Osos, CA Member No.: 587 Region Association: Central California |
Hey Mike, what's the best way to tell good used syncros from bad ones? I have some that are obviously good, and others that are obviosuly bad.. then I have some with a slight groove on one side, and some with no groove but some random pitting.
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Dr Evil |
Jan 11 2005, 06:46 PM
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#8
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Send me your transmission! Group: Members Posts: 22,995 Joined: 21-November 03 From: Loveland, OH 45140 Member No.: 1,372 Region Association: MidAtlantic Region |
I would have to see them. As long as one side is rough it should be useable. The #1 way to tell that they are spent is that they are smooth. They can't entice the slider to spin up if they are not rough.
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bondo |
Jan 11 2005, 06:57 PM
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#9
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Practicing my perpendicular parking Group: Members Posts: 4,277 Joined: 19-April 03 From: Los Osos, CA Member No.: 587 Region Association: Central California |
Cool, that should help exclude a few more.. I'll bring any remaining questionable ones to the next D&G.
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Red-Beard |
Jan 11 2005, 07:09 PM
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#10
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"Ya canna change the laws of Physics" Group: Benefactors Posts: 1,124 Joined: 11-February 03 From: Houston, TX Member No.: 288 Region Association: None |
I'm wondering if the "source" of the previous cheap synch bands was mexico. The price increase occured about the time they stopped producing Beetles.
James |
tracks914 |
Jan 11 2005, 09:10 PM
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#11
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Canadian Member Group: Benefactors Posts: 2,083 Joined: 15-January 03 From: Timmins, Ontario, Canada Member No.: 153 Region Association: None |
So what is your take on these, Syncro rings are they worth the $50 or should I buy the ones from PP or Tweeks (Mid America Motorworks) for $80?
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scotty914 |
Jan 11 2005, 09:18 PM
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#12
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suby torque rules Group: Members Posts: 1,525 Joined: 20-July 03 From: maryland, the land of 25 year Member No.: 924 |
that is not a syncro that fits a 901 tranny, it looks more like a piston ring
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Red-Beard |
Jan 11 2005, 09:18 PM
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#13
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"Ya canna change the laws of Physics" Group: Benefactors Posts: 1,124 Joined: 11-February 03 From: Houston, TX Member No.: 288 Region Association: None |
From my understanding, they are coming from Germany now, and are probably NOS.
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Dave_Darling |
Jan 11 2005, 09:21 PM
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#14
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914 Idiot Group: Members Posts: 14,981 Joined: 9-January 03 From: Silicon Valley / Kailua-Kona Member No.: 121 Region Association: Northern California |
I heard (don't remember where from, sorry!) that Porsche came down on an aftermarket manufacturer of the synchro rings a couple of years ago, and got them to stop producing 901-type synchro rings. (Possibly other stuff as well.) Supply & demand took over, and the prices quickly doubled to about $50 each. (They've since climbed even more, obviously...) No idea if the story is true or not. --DD |
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scotty914 |
Jan 11 2005, 09:24 PM
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#15
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suby torque rules Group: Members Posts: 1,525 Joined: 20-July 03 From: maryland, the land of 25 year Member No.: 924 |
hereis the PP parts image of the gear syncro parts diagram. if it helps you to see what they look like
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Red-Beard |
Jan 11 2005, 09:29 PM
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#16
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"Ya canna change the laws of Physics" Group: Benefactors Posts: 1,124 Joined: 11-February 03 From: Houston, TX Member No.: 288 Region Association: None |
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Red-Beard |
Jan 11 2005, 09:50 PM
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#17
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"Ya canna change the laws of Physics" Group: Benefactors Posts: 1,124 Joined: 11-February 03 From: Houston, TX Member No.: 288 Region Association: None |
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ZachP |
Jan 28 2005, 03:42 PM
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#18
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Member Group: Members Posts: 58 Joined: 12-September 04 From: Mooresville, NC Member No.: 2,746 Region Association: None |
I have a bunch for 901. $56 each, 2 or more I will give you for $53 a piece. Shipping will be between 1 and 4 dollars depending on when anyone wants it.
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Jeff Bonanno |
Jan 28 2005, 03:58 PM
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#19
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il dottore Group: Members Posts: 421 Joined: 30-April 03 From: San Diego, CA Member No.: 636 |
from top to bottom: trash, junk, hmm, new.
Attached image(s) |
ZachP |
Jan 28 2005, 04:03 PM
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#20
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Member Group: Members Posts: 58 Joined: 12-September 04 From: Mooresville, NC Member No.: 2,746 Region Association: None |
Interesting name jeff... any relation? I Know a bonanno descendant in your area... downtown SD.
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