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4.11 pintara pinion wont fit? 

 

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Posted: Tue Mar 27, 2007 10:48 pm 
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stockstandard wrote:
gogetta wrote:
stockstandard wrote:

2.77 EA diffs are 75 series, so any of the R31 ratios will fit


but not all R31 are 75 series, im fairly sure the 3.7 gears I put in there were 78s


If they were 78's they wouldnt have fit in your 2.77 housing without machining.


thats what I thought , at the time i was surprised..
ill check it again tomorrow..

 

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Posted: Tue Mar 27, 2007 10:48 pm 
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so do the ef's come out with 75 siried diffs then since my gears seem to be 75

 

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Posted: Tue Mar 27, 2007 10:50 pm 
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falcon_3512003 wrote:
yep both crowns has 0575 but just had a look at the housing and it has 0578


that is very strange.....if theyre 75s how did they fit in the first place and why dont the 411s fit if they are also 75s?

i think it comes back to that 3.08 housing being the odd one out..

 

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Posted: Tue Mar 27, 2007 10:51 pm 
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All the housings are marked 578 - even back in the x-series.

When you say you think it was a 78 series R31, was that the gears or the center? The R31 center I picked up at the wreckers last had a 4 pin 78 series center but the gears were still 75 series 575's

 

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Posted: Tue Mar 27, 2007 10:52 pm 
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falcon_3512003 wrote:
so do the ef's come out with 75 siried diffs then since my gears seem to be 75


no idea, its all very confusing....expert help required

 

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Posted: Tue Mar 27, 2007 10:54 pm 
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so if there all marked 578 what do i do then cause im geting confused to what to do lol

 

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Posted: Tue Mar 27, 2007 10:55 pm 
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stockstandard wrote:
All the housings are marked 578 - even back in the x-series.

When you say you think it was a 78 series R31, was that the gears or the center? The R31 center I picked up at the wreckers last had a 4 pin 78 series center but the gears were still 75 series 575's


im going to have a look at all my housings and gears tomorrow as I cant recall at the moment...

it makes sense that the x-series were marked 0578 because they were known as a 78 series diff....

 

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Posted: Tue Mar 27, 2007 10:56 pm 
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god bw had to confuse people with all these diff blody diffs but they all look and nily fit the same lol

 

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Posted: Tue Mar 27, 2007 10:57 pm 
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falcon_3512003 wrote:
so if there all marked 578 what do i do then cause im geting confused to what to do lol



think you need to find a good diff shop and find out whats the go....may have to spend some money with them but....

 

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Posted: Tue Mar 27, 2007 11:01 pm 
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well the guy at a diff shop told me today to get a diffrent housing or shim it but he didnt want to shim it for some reson he didnt want the job ??

 

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Posted: Tue Mar 27, 2007 11:03 pm 
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The markings cast on the housing are totally meaningless. If you try to find this magical late model housing that fits the old gears then your in for a lot of stuffing around.

 

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Posted: Tue Mar 27, 2007 11:08 pm 
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well he told me to open diffs and look at there crown and look for the same numbers that are on my 3.08 crown and cause i didnt know what they were while i was there but now i know there both 75 gears i duno why they wont fit

 

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Posted: Tue Mar 27, 2007 11:09 pm 
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my EL 3.08 diff is a 75 series. i fit 3.9's in it fine.

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Posted: Tue Mar 27, 2007 11:22 pm 
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i think you should be able to shim it then without any maching...

do the gears fit together at all or is it just an alignment issue..

 

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Posted: Tue Mar 27, 2007 11:33 pm 
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nar theses play in the pinion when u put the yoke on about 7mm play its like there needs to be a shim between the yoke and front bearing caust it wont pull the bearing into place

 

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