 Ring and Pinion Backlash, What's everyone doing? |
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| Matt Romanowski |
 Apr 15 2013, 07:11 PM
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#1
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Senior Member  Group: Members Posts: 878 Joined: 4-January 04 From: Manchester, NH Member No.: 1,507  |
For the folks who are rebuilding their own transmissions, what are you using for a backlash measurement? The manual says around .007, but that seems a little tight. We're trying to get some temperature out of the transmission and were thinking about running a little looser. Anyone tried that?
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Replies
| Dr Evil |
Oct 6 2013, 10:35 PM
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#2
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Send me your transmission! Group: Members Posts: 23,041 Joined: 21-November 03 From: Loveland, OH 45140 Member No.: 1,372 Region Association: MidAtlantic Region 
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Not using inches, why would you assume so? Decimal was out of place, sure.
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| Jon B |
Oct 6 2013, 10:57 PM
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#3
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Member Group: Members Posts: 73 Joined: 28-September 13 From: Vista, CA Member No.: 16,448 Region Association: None |
QUOTE(Dr Evil @ Oct 6 2013, 09:35 PM)  Not using inches, why would you assume so? I didn't assume numbers were in inches, I said "1/1000 of something" because it wasn't noted, just .012-.018 of something. But in US when people see .018 they do assume inches. Matt began thread with .007, an inch dimension although also not noted as such. Just felt it should be corrected in case future forum members search "backlash". No? Jon B. |
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| 0396 |
Oct 7 2013, 05:44 PM
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#4
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Advanced Member Group: Members Posts: 2,046 Joined: 13-October 03 From: L.A. Calif Member No.: 1,245 Region Association: Southern California |
QUOTE(Jon B @ Oct 6 2013, 09:57 PM) QUOTE(Dr Evil @ Oct 6 2013, 09:35 PM) Not using inches, why would you assume so? Hi, I didn't assume numbers were in inchs, I said "1/1000 of something" because it wasn't noted, just .012-.018 of something. But in US when people see .018 they do assume inches. Matt began thread with .007, an inch dimension although also not noted as such. Just felt it should be corrected in case future forum members search "backlash". No? Jon B. Some might not know Jon B. But as an FYI, he's one of the premiere 901/915/G50 trans experts on the west coast. Jon, good catch on the decimal thing. Only an expert would have caught that. (IMG:style_emoticons/default/piratenanner.gif) |
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Posts in this topic
Matt Romanowski Ring and Pinion Backlash Apr 15 2013, 07:11 PM
Mark Henry I wouldn't try that, maybe it's time for a... Apr 15 2013, 08:34 PM
Matt Romanowski
I wouldn't try that, maybe it's time for ... Apr 16 2013, 05:15 AM Mark Henry I don't race so mine is just stock.
But, I... Apr 16 2013, 08:02 AM pcar916 :agree: The backlash and contact pattern go work... Apr 16 2013, 08:16 AM Matt Romanowski You can have good settings and contact and still b... Apr 16 2013, 08:29 AM Dr Evil I use the factory tool, or at least a clone of it.... Apr 16 2013, 11:58 AM Jon B The factory states that .012-.018 is tolerance... ... Oct 6 2013, 10:32 PM Jon B
I use the factory tool, or at least a clone of it... Oct 7 2013, 10:49 PM Dr Evil
[quote name='Dr Evil' post='1850919' date='Apr 16... Oct 8 2013, 10:34 AM 396
[quote name='Dr Evil' post='1850919' date='Apr 1... Oct 8 2013, 12:31 PM Dr Evil Sure, whatever Oct 7 2013, 12:26 AM Matt Romanowski Jon - Good call.
As an update, we're going to... Oct 7 2013, 06:19 AM 76-914
Jon - Good call.
As an update, we're going t... Oct 7 2013, 08:19 AM Jon B
As an update, we're going to pull the transmi... Oct 7 2013, 10:00 PM r_towle Matt, what kind of differential do you use?
Rich Oct 7 2013, 07:56 PM Matt Romanowski
Matt, what kind of differential do you use?
Rich... Oct 7 2013, 11:32 PM zambezi
[quote name='Jon B' post='1936884' date='Oct 6 20... Oct 7 2013, 08:18 PM Dr Evil Ya, in my free time ;) Sorry, I am at my 9a-9p job... Oct 8 2013, 12:41 PM Dr Evil Search on Pelican as the guy who made them had a t... Oct 8 2013, 12:41 PM jimkelly see post #43
http://www.914world.com/bbs2/index.p... Oct 8 2013, 12:47 PM Dr Evil Um, no. That is not it. Oct 8 2013, 12:49 PM Matt Romanowski Post 21 shows one though. Oct 8 2013, 01:25 PM sixnotfour http://forums.pelicanparts.com/porsche-911...tml#p... Oct 8 2013, 01:56 PM Dr Evil
http://forums.pelicanparts.com/porsche-911...tml#... Oct 8 2013, 02:42 PM r_towle Matt,
Have you considered replacing the diff hous... Oct 8 2013, 07:44 PM Matt Romanowski
Matt,
Have you considered replacing the diff hou... Oct 8 2013, 08:25 PM Jon B We have a billet intermediate plate and side plate... Oct 8 2013, 09:35 PM Matt Romanowski
We have a billet intermediate plate and side plat... Oct 8 2013, 10:46 PM Jon B Matt,
You realize that's alot of engine and t... Oct 8 2013, 11:32 PM Matt Romanowski
Matt,
You realize that's alot of engine and ... Oct 9 2013, 06:07 AM r_towle
Matt,
You realize that's alot of engine and ... Oct 9 2013, 11:19 AM Jon B Can you replace the ring and pinion with the 8 too... Oct 9 2013, 12:07 PM John I use the VW tools. Got them to do 915's, but... Oct 8 2013, 07:52 PM Jon B John,
Those are excellent tools, and Porsche-reco... Oct 8 2013, 09:18 PM John
John,
Those are excellent tools, and Porsche-rec... Oct 9 2013, 08:18 PM 914forme Okay the magic mystery tool is really not needed. ... Oct 9 2013, 07:17 AM pcar916
Now Pinion Backlash, I hate doing that, shims, pu... Oct 9 2013, 08:24 AM Dr Evil Agreed, I hate setting preload. <_< Oct 9 2013, 08:23 AM Dr Evil Going to more teeth on the pinion of a 901 will ac... Oct 9 2013, 12:10 PM Jon B Going to more teeth on the pinion of a 901 will ac... Oct 9 2013, 02:08 PM Dr Evil I disagree. When it comes to the 901 pinion, more ... Oct 9 2013, 02:19 PM Jon B More teeth increase the gear's load bearing su... Oct 9 2013, 03:01 PM Dr Evil
We can disagree.
In any case it's really no... Oct 9 2013, 03:08 PM Dr Evil Late, but none the less relevant. Oct 9 2013, 04:30 PM Jon B It only began in April, so not quite a resurrectio... Oct 9 2013, 05:13 PM Dr Evil Yup, relevant, addressed two misplaced decimals, I... Oct 9 2013, 05:31 PM Jon B John,
I have more than one bar, but keep the smal... Oct 9 2013, 10:00 PM Jon B 914 Transmission
Measuring differential bearing pr... Oct 11 2013, 03:46 PM 396 Thanks for the indepth education. Now we know who ... Oct 11 2013, 03:54 PM Jon B 914 Transmission
Setting Ring & Pinion
Factor... Oct 11 2013, 04:03 PM |
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