 930 diff flip pictures requested....... |
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| dlee1967 |
 Mar 9 2012, 04:57 PM
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#1
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V8Lurker  Group: Members Posts: 540 Joined: 20-February 03 From: Splendora, TX Member No.: 327 Region Association: None  |
Before the flamers get started...YES, I have searched and searched.....even on the Lambo Lounge and GT40 forums.
I am interested in any pictures of the case machining and welding required when flipping the differential on an early (short) 930 transaxle for fitment in a 914. A shot of the inside of the bellhousing to show the added kick out for the ring gear on the other side is what I am most interested in as the 930 pressure plate comes in pretty deep and care must be taken to make sure you don't have any contact by making the kick out too high. The electronic speedo sender is a bit of a no brainer, but please post what you have. I am aware of setting the backlash and how critical this is in providing long life of the gearbox. No need to rehash this. I am aware of the shops that provide this service and what they charge. I am aware of the technique for inverting the box, but want to maintain a full trunk on a street car and don't care to add a spray bar system in the box. Thank you. Attached image(s) 
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| pdlightning |
Mar 9 2012, 05:53 PM
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#2
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Member Group: Members Posts: 207 Joined: 4-February 11 From: Santa Clarita Member No.: 12,660 Region Association: Southern California |
QUOTE(dlee1967 @ Mar 9 2012, 02:57 PM)  Before the flamers get started...YES, I have searched and searched.....even on the Lambo Lounge and GT40 forums. I am interested in any pictures of the case machining and welding required when flipping the differential on an early (short) 930 transaxle for fitment in a 914. A shot of the inside of the bellhousing to show the added kick out for the ring gear on the other side is what I am most interested in as the 930 pressure plate comes in pretty deep and care must be taken to make sure you don't have any contact by making the kick out too high. The electronic speedo sender is a bit of a no brainer, but please post what you have. I am aware of setting the backlash and how critical this is in providing long life of the gearbox. No need to rehash this. I am aware of the shops that provide this service and what they charge. I am aware of the technique for inverting the box, but want to maintain a full trunk on a street car and don't care to add a spray bar system in the box. Thank you. Good set of questions. I am doing the same to a LS1/ 915 box with a 3:10 R/P and will learn from the post, Thanks |
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| dlee1967 |
Mar 15 2012, 01:28 PM
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#3
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V8Lurker Group: Members Posts: 540 Joined: 20-February 03 From: Splendora, TX Member No.: 327 Region Association: None |
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| pcar916 |
Mar 15 2012, 01:31 PM
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#4
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Is that a Lola? Group: Members Posts: 1,523 Joined: 2-June 05 From: Little Rock, AR Member No.: 4,188 Region Association: None 
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Not sure why this would bring on flames but good luck!
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| Richard Casto |
Mar 15 2012, 02:12 PM
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#5
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Blue Sky Motorsports, LLC Group: Members Posts: 1,465 Joined: 2-August 05 From: Durham, NC Member No.: 4,523 Region Association: South East States |
I am interested as well and subscribed to this thread shortly after your first post. However, I am suspecting that most who have actually done this may consider the "how to do this" to be proprietary information and may not be likely to share for fear of loosing business.
Richard |
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| McMark |
Mar 15 2012, 03:18 PM
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#6
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914 Freak! Group: Retired Admin Posts: 20,179 Joined: 13-March 03 From: Grand Rapids, MI Member No.: 419 Region Association: None |
I thought I had pics to share, but I can't find them. (IMG:style_emoticons/default/sad.gif)
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| McMark |
Mar 15 2012, 03:22 PM
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#7
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914 Freak! Group: Retired Admin Posts: 20,179 Joined: 13-March 03 From: Grand Rapids, MI Member No.: 419 Region Association: None |
Well, I guess I just needed to look again. This wasn't my project, I just took pics. Some DAPO had tried to solve the issue with epoxy/JBWeld. It didn't work. (IMG:style_emoticons/default/rolleyes.gif)
This got welded up in the bellhousing area. Attached image(s)    
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| dlee1967 |
Mar 15 2012, 09:32 PM
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#8
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V8Lurker Group: Members Posts: 540 Joined: 20-February 03 From: Splendora, TX Member No.: 327 Region Association: None |
Geeze Mark....that sure is ugly. After the DAPO butcher job it is a wonder you wanted to touch it. After you welded up the mess in the bell housing was any material taken off the ring gear or the selector shaft?
Thanks for the pics. These should be the "how not to flip your 930 diff". David Lee |
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| GeorgeRud |
Mar 15 2012, 10:00 PM
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#9
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Advanced Member Group: Members Posts: 3,725 Joined: 27-July 05 From: Chicagoland Member No.: 4,482 Region Association: Upper MidWest |
As Vellios made a conversion kit for the 930 trans, there must be a way to flip the Ring gear without destroying the case. Perhaps they do need to be welded up to get enough material to machine the clearance for the ring gear! I don't believe there's any more than just a slight clearancing needed on the 915 gearboxes, but that doesn't help you.
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