Blown Chevette Diff?

Will they fit?...find out here!

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Have you blown a chevette diff?

Nope, still going strong.
7
78%
Yeap, they are weaker than my little sister.
1
11%
Not yet, but they are crap anyway.
1
11%
 
Total votes : 9

Blown Chevette Diff?

Postby mikuni » 11 Mar 2007, 01:58

How many people have actually blown a chevette diff?

I know they are tiny, but I've never had any trouble with mine despite the occational clutch drop etc. Also, I talked to a guy that had a twincam isuzu motor (G200W making around 100hp) and his standard diff lasted well with that power going through it.
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Postby CancerWagon » 11 Mar 2007, 09:38

I've blown two, but overall I wouldn't call them weak. Hearty abuse will break most anything.

(1600cc 65-70hp, 3.36:1 ratio)
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Postby mikuni » 11 Mar 2007, 12:16

And they are the same type of diff in you're model that you are aware of? I thought they might be different.
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Postby 14yearoldchevetter » 11 Mar 2007, 13:40

I suppose if you didnt have the bottom hangin out all the time the diff wouldnt blow, the cars weren't made for that, apart from the HS And HSR 8) 8) 8)
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Postby CancerWagon » 11 Mar 2007, 23:41

They were both 3.36:1 ratio... broke the spider gears. Changed out the spiders and carried on as before with fresh 80-90W oil. The NA axles appear to be the same as the garden variety vauxall 1256 diffs, But I have no way of confirmimg my theory.

Titanium spiders, or a spooled carrier. :twisted:
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Postby mikuni » 13 Mar 2007, 09:10

Cool, thanks for that.

It almost looks like my theory is proving true. That everyone just assumes that they are ultra weak just because they are small, but in reality they aren't completely unable to manage a little power.
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Postby shoveitnz » 13 Mar 2007, 14:40

Well I'm fitting an HS axle for the rotorvette but I think with only 130BHP (for now...)and very little torque fron the engine the standard diff would be ok? I dont drop clutches and cane it on rough roads.

I'd love it if standard diffs were ok as the HS axle means turreting the rear end on a car thats never seen a welder!!! sniff

All the hassle - plus the HS axle weighs so much!!!!
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Postby CancerWagon » 14 Mar 2007, 02:00

I'd think the standard differential would be very well suited to a W-a-n-k-e-l engine. (high power, low torque).

Put fresh appropriate oil in the axle, and a fresh magnet on the cover. Run it and inspect every so often to see how it's holding up.

I need to pop the cover on the diff in my diesel, to see what shape it's in. Has about the same as the gas engine for torque, at less than half the RPM.
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Postby sexychevette » 03 Apr 2007, 11:59

I reckon they're pretty strong... Ive dumped the clutch at full revs quite few few times without any problems :lol: thats with a 1256 tho. Im sure if you weld it up it'll handle abit of power. Maybe a better plan would be to go with an lsd piazza rear end? -but you've already explained why you dont want to do that...
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