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How strong are Dana 30's?

General Tech Talk

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How strong are Dana 30's?

Post by toy77 »

G'day all,

i was wondering if anyone here has any advice on the strength of dana 30 diffs?

what kind of abuse they have handled, and how they have been broken.

i am not using this diff in a 4x4, but rather my street car, so not all info will be relevant, but all will be appreciated.

Cheers
Stew
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Post by Wooders »

Not using in a 4x4?
You do relise it's a FRONT diff right?
Cheers [url=http://www.wooders.com.au]Wooders[/url]
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Post by toy77 »

hehehe, yeah i do....

but they also use dana 30's in volvo's... rear wheel drive.

Cheers
Stew
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Post by Wooders »

Well how's about that.....
Anyhow my front Dana30 has taken a reasonable pounding - but they are NOT a strong diff.
The R&P are tiny.
The tubes aren't exactly strong either.
Personally if you were looking to put some HP through it - I'd replace it...
Cheers [url=http://www.wooders.com.au]Wooders[/url]
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Post by jeep97tj »

I have seen a few axles go, all running 35 simexs 2 after being getting air and landing with 130kw being bumped into them and the other on full lock stuck in a rut, never heard of a ring and pinion leting go.
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Post by Wooders »

I have - a few.
Admittedly one was up at the cape.....
Also we're talking rear application where IMHO the size of the R&P would come into play much more.....
Cheers [url=http://www.wooders.com.au]Wooders[/url]
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Post by grimbo »

what sort of car, what sort of HP, what sort of use? Custom application or is it stock? Open or locked diff? What diff ratio

If you can provide enough info to cover all bases you'll probably get more appropriate answers
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Post by toy77 »

hey there,

i already have one in my car, but someone has asked how much power they can handle.... so i thought i would ask.

i have a 77 celica, fitted with a 1ggte and single turbo. it is making 200kw at the wheels at the moment. centre is welded. - car weighs slightly over 1000kg. the car is used for street and drag... and the diff has handled some pretty big launches on slicks so far......

i have spoken to a few people who have usedthem in race applications before, was just after more information from people with experience.

Cheers
Stew
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Post by Wooders »

What ratio. a 3.07 (eg) is much beefie than say a 4.56 or 4.88 that we commonly have in our Dana30's (to run bigger tyres).
Cheers [url=http://www.wooders.com.au]Wooders[/url]
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Post by toy77 »

i am runnin a 3.9 ratio
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