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Stop me before I touch another transmission!, A story of many broken hard parts.

bryanc	Mar 13 2006, 01:18 AM Post #1
Member Group: Members Posts: 321 Joined: 9-August 04 From: San Antonio, Tx Member No.: 2,495 Region Association: Southwest Region	So, here's my 914 story with some recent updates..... Background: in 1992, I bought a 914 rust-bucket that had just had the tranny rebuilt and the PO forgot to put oil in it. Turns out transmissions don't like that. I bought it for a steal and re-rebuilt the tranny. It lasted for about 30 miles. Didn't torque the mainshaft bolt correctly and it unscrewed itself through the tailhousing. In 1994, I had bought a daily driver 914 (my blue car) and it got ran over in a parking lot. So, while it was being repaired, I decided 'why not rebuild the tranny' since it had the familiar 2nd gear crash. It lasted about 1000 miles. Leaked, ran out of oil, you know the rest. After that, I bought a good used tranny and vowed to never open it up. It still works (knock on magnesium case) Today When I bought the yellow car in my avatar, the PO gave me a second gearbox that the mainshaft bold had backed out of (sound familiar?). He said 'there's lots of shavings in there so it needs to be gone through'. Ok, tonight I decided to go through it.... It's never that easy.... Attached thumbnail(s)

bryanc	Mar 13 2006, 01:20 AM Post #2
Member Group: Members Posts: 321 Joined: 9-August 04 From: San Antonio, Tx Member No.: 2,495 Region Association: Southwest Region	Top of tranny says: '914LTD 01/01 GT Diff' (has a limited slip) 'AFMSX 55 2MM' I assume the AFMSX is the gear selection. I'll look that up soon. This is the 'short track' box. The long track box is in the car. the 2MM is the pinion mesh?? Anybody?? Second picture, of the gear cluster: Attached thumbnail(s)

bryanc	Mar 13 2006, 01:22 AM Post #3
Member Group: Members Posts: 321 Joined: 9-August 04 From: San Antonio, Tx Member No.: 2,495 Region Association: Southwest Region	The gears look great, but that pinion is ugly. Sorry for the photo, but it's bad. The ring gear seems ok, it's a stock 7:31 ratio R&P. Attached thumbnail(s)

bryanc	Mar 13 2006, 01:23 AM Post #4
Member Group: Members Posts: 321 Joined: 9-August 04 From: San Antonio, Tx Member No.: 2,495 Region Association: Southwest Region	Previous experiment in transmission surgery: Attached thumbnail(s)

bryanc	Mar 13 2006, 01:24 AM Post #5
Member Group: Members Posts: 321 Joined: 9-August 04 From: San Antonio, Tx Member No.: 2,495 Region Association: Southwest Region	And the one before that: Attached thumbnail(s)

bryanc	Mar 13 2006, 01:24 AM Post #6
Member Group: Members Posts: 321 Joined: 9-August 04 From: San Antonio, Tx Member No.: 2,495 Region Association: Southwest Region	PO did this:

bryanc	Mar 13 2006, 01:25 AM Post #7
Member Group: Members Posts: 321 Joined: 9-August 04 From: San Antonio, Tx Member No.: 2,495 Region Association: Southwest Region	Sorry forgot pic: Attached thumbnail(s)

bryanc	Mar 13 2006, 01:27 AM Post #8
Member Group: Members Posts: 321 Joined: 9-August 04 From: San Antonio, Tx Member No.: 2,495 Region Association: Southwest Region	'But I have a new tailhousing' says the PO . I think it can work, but it's gonna take some elbow grease: Attached thumbnail(s)

bryanc	Mar 13 2006, 01:30 AM Post #9
Member Group: Members Posts: 321 Joined: 9-August 04 From: San Antonio, Tx Member No.: 2,495 Region Association: Southwest Region	So here's my plans: I can take the mainshaft out of one of my previous transmisison experiments. I assume I should I take the ring gear as well? If I do that, how do I set the pinion mesh? IIRC, there is a special porsche tool for doing this. Anybody know any tricks to do it without that tool? Anybody have that tool?

ClayPerrine	Mar 13 2006, 06:48 AM Post #10
Life's been good to me so far..... Group: Admin Posts: 15,416 Joined: 11-September 03 From: Hurst, TX. Member No.: 1,143 Region Association: NineFourteenerVille	It takes some special, very expensive tools to set the pinion depth and backlash. I found them on e-bay years ago, and paid through the nose to get them. If you want to box it up and send it to me, I will rebuild it. I have done a bunch of them, and they work fine. In answer to your question, the ring gear and the pinion gear are a matched pair, and have to be kept together.

bryanc	Mar 13 2006, 10:43 AM Post #11
Member Group: Members Posts: 321 Joined: 9-August 04 From: San Antonio, Tx Member No.: 2,495 Region Association: Southwest Region	I figured as much on the R&P. I'll probably have a local shop do the depth and backlash setting since I need to get this put together soon. That is if they have the tools. There are several local shops to choose from, so someone must have the tool. Why can't it be like other cars where you slop some paint on the teeth and verify that you get good coverage when you rotate the gears? Thanks for the help.

rick 918-S	Mar 13 2006, 11:07 AM Post #12
Hey nice rack! -Celette Group: Members Posts: 20,426 Joined: 30-December 02 From: Now in Superior WI Member No.: 43 Region Association: Northstar Region	if you have any qurstions on the engraving, 914 LTD. 309.694.1797 call Brad.

GaroldShaffer

Mar 13 2006, 11:45 AM

Post #13

You bought another 914?

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QUOTE (rick 918-S @ Mar 13 2006, 09:07 AM)

if you have any qurstions on the engraving, 914 LTD. 309.694.1797 call Brad.

(IMG:http://www.914world.com/bbs2/html/emoticons/dry.gif) (IMG:http://www.914world.com/bbs2/html/emoticons/slap.gif) (IMG:http://www.914world.com/bbs2/html/emoticons/laugh.gif)

(IMG:http://www.914world.com/bbs2/html/emoticons/agree.gif) You beat me to it.

rick 918-S

Mar 13 2006, 12:17 PM

Post #14

Hey nice rack! -Celette

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QUOTE (itsa914 @ Mar 13 2006, 09:45 AM)

QUOTE (rick 918-S @ Mar 13 2006, 09:07 AM)

if you have any qurstions on the engraving, 914 LTD. 309.694.1797 call Brad.

(IMG:http://www.914world.com/bbs2/html/emoticons/dry.gif) (IMG:http://www.914world.com/bbs2/html/emoticons/slap.gif) (IMG:http://www.914world.com/bbs2/html/emoticons/laugh.gif)

(IMG:http://www.914world.com/bbs2/html/emoticons/agree.gif) You beat me to it.

Just got off the phone with him. He said he even dates the rebuilds.

He has my transaxle now.

Cap'n Krusty

Mar 13 2006, 12:57 PM

Post #15

Cap'n Krusty

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QUOTE (bryanc @ Mar 13 2006, 08:43 AM)

I figured as much on the R&P. I'll probably have a local shop do the depth and backlash setting since I need to get this put together soon. That is if they have the tools. There are several local shops to choose from, so someone must have the tool.

Why can't it be like other cars where you slop some paint on the teeth and verify that you get good coverage when you rotate the gears?

Thanks for the help.

I doubt there is one independent Pcar shop in a thousand that has the tools, and then they have to have somebody proficient in the use of those tools. Don't get your hopes up. The Cap'n

ClayPerrine

Mar 13 2006, 01:09 PM

Post #16

Life's been good to me so far.....

Group: Admin
Posts: 15,416
Joined: 11-September 03
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QUOTE (Cap'n Krusty @ Mar 13 2006, 12:57 PM)

QUOTE (bryanc @ Mar 13 2006, 08:43 AM)

I figured as much on the R&P. I'll probably have a local shop do the depth and backlash setting since I need to get this put together soon. That is if they have the tools. There are several local shops to choose from, so someone must have the tool.

Why can't it be like other cars where you slop some paint on the teeth and verify that you get good coverage when you rotate the gears?

Thanks for the help.

I doubt there is one independent Pcar shop in a thousand that has the tools, and then they have to have somebody proficient in the use of those tools. Don't get your hopes up. The Cap'n

(IMG:http://www.914world.com/bbs2/html/emoticons/agree.gif)

I got lucky in purchasing the tools. And while I know I can do the job right, I am VERY slow about it.

GaroldShaffer	Mar 13 2006, 01:56 PM Post #17
You bought another 914? Group: Benefactors Posts: 7,620 Joined: 27-June 03 From: Portage, IN Member No.: 865 Region Association: None	Call Brad at 914ltd 309.694.1797 (IMG:http://www.914world.com/bbs2/html/emoticons/smile.gif)

bryanc	Mar 13 2006, 07:52 PM Post #18
Member Group: Members Posts: 321 Joined: 9-August 04 From: San Antonio, Tx Member No.: 2,495 Region Association: Southwest Region	I'll probably call Brad tommorrow, but Stuttgart Southwest in Tempe can set the box up correctly, I just need to get parts over to them.

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