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Diff Difference?

Tech Talk for Suzuki owners.

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Diff Difference?

Post by jhsuzi »

Quick Question: How do you tell the difference between a NT diff (3.9) and a WT Diff (3.7)?

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Post by nicbeer »

external or internal?

external - spring pads are 2" wider approx on the WT 3.7 diffs

internal - count the crown and pinion to devide = ratio

also NT 3.9 are 4 pin diffs front and rear, where the 3.7 are 4 pin rear only i think.
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Post by want33s »

the nt diff has small flanges and 8mm bolts.
the wt has larger flanges and 10mm bolts
Last edited by want33s on Wed Nov 07, 2007 5:30 pm, edited 1 time in total.
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Post by jhsuzi »

Internal.
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Post by want33s »

jhsuzi wrote:Internal.
count the teeth and divide crownwheel by pinion.
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Post by jhsuzi »

Thanks for that Guys.
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Post by dank »

pre mid-88 WT sierra have a four pinion front diff as well. Everything after June/july 88 they went to a 2 pin carrier. mine is an april 88 model and it had a 4 pinion front diff.
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Post by jono_785 »

hey guys little off subject... i wanting to fit a front lockright that i already have.. where can i get a 4 pin carrier from as mine has a 2 pin?
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Post by 11_evl »

jono_785 wrote:hey guys little off subject... i wanting to fit a front lockright that i already have.. where can i get a 4 pin carrier from as mine has a 2 pin?
i think dank just answered that 4 you

pre mid-88 WT sierra have a four pinion front diff as well. Everything after June/july 88 they went to a 2 pin carrier. mine is an april 88 model and it had a 4 pinion front diff.
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Post by bigcam »

jono_785 wrote:hey guys little off subject... i wanting to fit a front lockright that i already have.. where can i get a 4 pin carrier from as mine has a 2 pin?
PM dank, he has a couple lying around ;)
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Post by jono_785 »

ah sorry i not specific enough. can u use the narrow track 4 pin carrier?
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Post by Gwagensteve »

Yes.

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