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A12 Fan Clutch (2806070) Dimensions
Posted By: LYNCHROAD69.5
A12 Fan Clutch (2806070) Dimensions - 01/15/08 01:55 AM
Can anyone tell me the height and diameter of a 070 fan torque clutch? I have one that I believe is an 070 but no numbers on the face. Also anyone rebuild these?
Posted By: 62maxwgn
Re: A12 Fan Clutch (2806070) Dimensions - 01/15/08 02:03 AM
7 1/4" x 2 1/2"
Posted By: Anonymous
Re: A12 Fan Clutch (2806070) Dimensions - 01/15/08 02:20 AM
Quote:
Can anyone tell me the height and diameter of a 070 fan torque clutch? I have one that I believe is an 070 but no numbers on the face. Also anyone rebuild these?
theres a guy down south i believe rebuilds them but he takes about 7 or 8 months. i need my 070 rebuilt as well.
anyone know who the guy is?
Posted By: Mastershake340
Re: A12 Fan Clutch (2806070) Dimensions - 01/15/08 02:33 AM
Fred Oliva. 7 or 8 months? I think its over a year.
http://www.gate.net/~foliva/clutch.htm
Posted By: 6PakBee
Re: A12 Fan Clutch (2806070) Dimensions - 01/15/08 02:35 AM
Quote:
Quote:
Can anyone tell me the height and diameter of a 070 fan torque clutch? I have one that I believe is an 070 but no numbers on the face. Also anyone rebuild these?
theres a guy down south i believe rebuilds them but he takes about 7 or 8 months. i need my 070 rebuilt as well.
anyone know who the guy is?
You have a PM.
Posted By: Anonymous
Re: A12 Fan Clutch (2806070) Dimensions - 01/15/08 03:05 AM
Quote:
Fred Oliva. 7 or 8 months? I think its over a year.
http://www.gate.net/~foliva/clutch.htm
Try 2 or 3 years. Fred is so busy he doesn't return any phone calls. Mine is in need of a rebuild as well.
If anyone knows of any other rebuild services other than Fred, please let us know.
Thanks,
Harry
Posted By: AZ_A12_BEE
Re: A12 Fan Clutch (2806070) Dimensions - 01/20/08 04:05 AM
height of stem is 1 1/4 inches anything else is not a 070
Posted By: floyd
Re: A12 Fan Clutch (2806070) Dimensions - 01/20/08 01:01 PM
Quote:
Quote:
Fred Oliva. 7 or 8 months? I think its over a year.
http://www.gate.net/~foliva/clutch.htm
Try 2 or 3 years. Fred is so busy he doesn't return any phone calls. Mine is in need of a rebuild as well.
If anyone knows of any other rebuild services other than Fred, please let us know.
Thanks,
Harry
I'm pretty sure Jules was looking into it, but I'm not sure if he decided to do it or not.
Posted By: bremotorsports
Re: A12 Fan Clutch (2806070) Dimensions - 01/20/08 05:29 PM
One of my C.D.F. (Certified Detail Freak) associates here in NJ, Bill Meerholz, has re-done several 2806070 and 3462112 fan clutches with outstanding results. For fan clutch info and other component restoration services, contact him as follows:
Bill Meerholz Enterprises
973-839-1001 Shop
973-703-7003 Cellular
bmcuda@optonline.netBill Rolik
Posted By: JulesdaWiperman
Re: A12 Fan Clutch (2806070) Dimensions - 01/22/08 03:02 PM
Bill,
would you be able to post a picture of how your friend installs the front faceplate back onto the housing please?
Thanks
Jules
Posted By: bremotorsports
Re: A12 Fan Clutch (2806070) Dimensions - 01/23/08 01:48 AM
After disassembling an unusable core for an overall evaluation, and, as a result, in our estimation, because of the extremely thin gauge of the metal involved and other potential durability problems, the decision was made to refinish only sound cores not requiring the disassembly process. Considering the fan clutch is often just behind a 1500.00 radiator, it was felt this was the safest route for all parties concerned. Need a reference? Call Ted Stephens. A unit was done for him. Any further questions, contact Bill M. per the info provided in my previous post.
Bill Rolik
Posted By: JulesdaWiperman
Re: A12 Fan Clutch (2806070) Dimensions - 01/23/08 03:07 AM
If I understand you correctly, the clutch is not opened at all then. I don't see the resto process
then. No matter. I was just curious.
Jules
Posted By: AZ_A12_BEE
Re: A12 Fan Clutch (2806070) Dimensions - 01/23/08 04:44 PM
Quote:
After disassembling an unusable core for an overall evaluation, and, as a result, in our estimation, because of the extremely thin gauge of the metal involved and other potential durability problems, the decision was made to refinish only sound cores not requiring the disassembly process. Considering the fan clutch is often just behind a 1500.00 radiator, it was felt this was the safest route for all parties concerned. Need a reference? Call Ted Stephens. A unit was done for him. Any further questions, contact Bill M. per the info provided in my previous post.
Bill Rolik
so its just a cosmetic resto?
Posted By: bremotorsports
Re: A12 Fan Clutch (2806070) Dimensions - 01/23/08 06:38 PM
Until there is a greater comfort level with the reattachment of the front plate FOR THE LONG HAUL, yes. As stated, it is extremely thin. We want to be sure that these units are suitable for normal, and even extended length driving, not just sitting dormant.
There are alternative, permanent methods being explored now. In the interim, there are good cores on hand. Contact Bill M. as previously stated for further details.
Bill Rolik
Posted By: Mastershake340
Re: A12 Fan Clutch (2806070) Dimensions - 09/26/08 09:27 PM
Quote:
Quote:
Fred Oliva. 7 or 8 months? I think its over a year.
http://www.gate.net/~foliva/clutch.htm
Try 2 or 3 years. Fred is so busy he doesn't return any phone calls. Mine is in need of a rebuild as well.
If anyone knows of any other rebuild services other than Fred, please let us know.
Thanks,
Harry
I just got an invoice from Fred Oliva yesterday for mine, it's been almost exactly a year since I mailed it to him. I put check in the mail within a half hour of getting my bill. I look forward to seeing my restored fan clutch! 
Posted By: CrazyD
Re: A12 Fan Clutch (2806070) Dimensions - 09/26/08 10:10 PM
What eaxactly is done during the restoration - or rephrased, what causes a fan clutch to become less resistant - are there vanes inside the unit similar to a torque converter?
Posted By: TransAm Twins
Re: A12 Fan Clutch (2806070) Dimensions - 09/26/08 10:17 PM
Got my bill from Fred this week also! Was one year on 9/19. If mine looks anything like his other work, it should be really nice.
Posted By: blkbee6pack
Re: A12 Fan Clutch (2806070) Dimensions - 01/21/09 04:06 PM
I have a fan clutch that after looking at many photos of 070 clutches, it looks dead on. The measurements are 7 1/4" diameter, but the length is 2 3/4".
1/4" longer than it should be and the shaft seal is dark blue, not red. What would this be for,
and any one have a part number? THANKS
Posted By: AZ_A12_BEE
Re: A12 Fan Clutch (2806070) Dimensions - 01/21/09 04:13 PM
Quote:
I have a fan clutch that after looking at many photos of 070 clutches, it looks dead on. The measurements are 7 1/4" diameter, but the length is 2 3/4". 1/4" longer than it should be and the shaft seal is dark blue, not red. What would this be for, and any one have a part number? THANKS
What is the length of the shaft measured like the pic I posted earlier in this thread using the wooden ruler?
Posted By: YYZ
Re: A12 Fan Clutch (2806070) Dimensions - 01/21/09 04:24 PM
Blue seal with a longer shaft might be a 3462112 -they are noticeably taller than the 070 units
Posted By: blkbee6pack
Re: A12 Fan Clutch (2806070) Dimensions - 01/21/09 04:26 PM
Measureing from stud hole to end of shaft is 1 1/2", and blue seal. Everthing else looks dead on.
Posted By: AZ_A12_BEE
Re: A12 Fan Clutch (2806070) Dimensions - 01/21/09 04:27 PM
Quote:
Blue seal with a longer shaft might be a 3462112 -they are noticeably taller than the 070 units
Thats what Im guessing, a measurement would confirm this 
Posted By: Dave Watt
Re: A12 Fan Clutch (2806070) Dimensions - 01/21/09 07:02 PM
Quote:
I just got an invoice from Fred Oliva yesterday for mine, it's been almost exactly a year since I mailed it to him. I put check in the mail within a half hour of getting my bill. I look forward to seeing my restored fan clutch!
Photos?
Posted By: Mastershake340
Re: A12 Fan Clutch (2806070) Dimensions - 01/21/09 07:13 PM
I got my invoice in September but my fan clutch didn't show up until just before Christmas. I guess there was a plating problem and mine was among a group that needed to be redone. Not a big deal except I wasn't notified, feared my part was lost in shipping, and my emails asking where it was were ignored.
All's well that ends well I guess, as it is safely stored here and will look good on the car someday if it ever gets finished!
Posted By: 5126brl No more
Re: A12 Fan Clutch (2806070) Dimensions - 01/21/09 07:20 PM
Looks Nice
Is there a date code on it? I can not see one in the photo.
Posted By: Dave Watt
Re: A12 Fan Clutch (2806070) Dimensions - 01/21/09 07:24 PM
Thanks for posting the photo, that is some nice work. I'd love to know how the front is reattached.
Posted By: Mastershake340
Re: A12 Fan Clutch (2806070) Dimensions - 01/21/09 07:26 PM
No, I think there is supposed to be a datecode on the front face somewhere. I guess I will need to stencil one on myself. This was the original fan clutch off my car, I wish I had cleaned it up and looked for markings including the datecode before I sent it off to Fred.
Posted By: AZ_A12_BEE
Re: A12 Fan Clutch (2806070) Dimensions - 01/22/09 03:11 AM
Quote:
Measureing from stud hole to end of shaft is 1 1/2", and blue seal. Everthing else looks dead on.
You have a 3462112 unit. Let me know what you get for it, I got on I need to sell also
Posted By: cdp
Re: A12 Fan Clutch (2806070) Dimensions - 01/22/09 11:37 PM
69 A12 rr
Posted By: RoadRunnerJD
Re: A12 Fan Clutch (2806070) Dimensions - 01/23/09 12:22 AM
Are there any numbers stamped in your fan blades?My fan blades are all indiviually stamped with the fan p/n. The only paint on my original is "Engine Side". Do you think it could be either way?
Posted By: RoadRunnerJD
Re: A12 Fan Clutch (2806070) Dimensions - 01/23/09 12:24 AM
I believe the slightly longer shaft one is from a 340. I've used them before and they work fine. Also, there is stil 1 3/4" clearance from the front of the fan to the radiator fins. IMO-I wouldn't hesitate to use it.
Posted By: cdp
Re: A12 Fan Clutch (2806070) Dimensions - 01/23/09 12:47 AM
my flan blate in only ink stamped, no part #'s stamped. I have seen others/later model with each blade stamped.
May have been more than one supplier?
Posted By: 69Y2RT
Re: A12 Fan Clutch (2806070) Dimensions - 01/23/09 05:06 PM
I think I was told these were both the 070 clutches.
Is that possible?
Posted By: shakerjoe
Re: A12 Fan Clutch (2806070) Dimensions - 01/23/09 05:20 PM
no - the one on the left is a 3462112, 1971 - I should know, they're both mine - that's my old dining room !
Posted By: shakerjoe
Re: A12 Fan Clutch (2806070) Dimensions - 01/23/09 05:30 PM
front's
Posted By: shakerjoe
Re: A12 Fan Clutch (2806070) Dimensions - 01/23/09 05:35 PM
070 difference - forgot how much longer the 112 was, and both clutches I can't get to in the garage, about 5/16's or so I think I remember
Posted By: 70runner
Re: A12 Fan Clutch (2806070) Dimensions - 01/24/09 08:41 AM
One I got from Meerholz:
Front face:
Closeup showing red seal:
Posted By: Topcat
Re: A12 Fan Clutch (2806070) Dimensions - 01/24/09 04:55 PM
Mastershake and I were in the same batch because I had mine delayed also. Fred said his plater accidentally plated it the wrong color. Took about 9 months before I got mine back. If you have any imperfections on yours before its re conditioned, they will show later when it gets re plated. Mine has 2 tiny spots on it but aren't very noticable. This is a 71 clutch.
Posted By: Mastershake340
Re: A12 Fan Clutch (2806070) Dimensions - 01/24/09 05:25 PM
Can someone educate me on date coding on these clutch fans? My engine build date was April 6, 1970. What code should be stamped in the center of my fan clutch?
Posted By: blkbee6pack
Re: A12 Fan Clutch (2806070) Dimensions - 01/24/09 07:54 PM
Thanks for all the great ansers.
I would say mine is a 112. The shaft is 1/4" longer with a blue seal. Anyone have a restoreable 070 that wants to sell or trade for my restorable 112? It is not worn out, leaking, broken etc. I need to get one soon and send it out to be restored. As i am about a year or so left with the bee. THANKS
Posted By: ScottSmith_Harms
Re: A12 Fan Clutch (2806070) Dimensions - 08/23/12 03:57 AM
Whos the Corvette guy who restores fan clutches? There was a post about him on Moparts recently but I can't find it?
Posted By: RestoRick
Re: A12 Fan Clutch (2806070) Dimensions - 08/23/12 06:09 AM
Posted By: ScottSmith_Harms
Re: A12 Fan Clutch (2806070) Dimensions - 08/23/12 07:18 AM
Link isn't working Rick
Posted By: TWS
Re: A12 Fan Clutch (2806070) Dimensions - 08/23/12 12:12 PM