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| markr154 |
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[quote="LG"]
This is very useful LG! I've got a STD EF, with what I can only guess is a 3.23:1 Single spinner. With all the mods I've done (everything but the cam, see below list), would my car benefit from going to a 3.45:1 or 3.7:1 LSD? I can feel that my engine has opened up more with my intake & exhaust mods, but the car itself is still a little sluggish (except when I put my foot down with Auto shift kit switched on!) A higher geared diff would HAVE to make the car more responsive, right?
_________________ Hot Chilli Red EL XR6, 5-spd, JMM DEV 5 enhanced (161 rwkw custom tuned), Eliminator Switch Chip, 18" BA GTP rims, Pedders Superlows, BA XR6 badges, BA Sunroof, Pioneer Stereo, Splits, 6x9's, 10" sub, 700W 6-ch Viper amp.
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| Blu Falc |
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no higher gearing makes it less responsive, a higher value for the diff means shorter gearing. shorter gearing is more responsive, faster accelerating but uses more fuel because there is more revs for a given speed
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| Greenmachine |
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{USERNAME} wrote: id be p****d if it doesnt have an LSD...it should do....go sit on the brake and see if it leaves 2 nice fat strips.........as for the ratio, jack the car up and see what the tag on the diff has stamped on it....im gonna take a guess and say 3.45....could be wrwong but....what revs does it sit on at 100 kays??
That test is actually NOT a useful indication of whether the diff is limited slip or not - on a good surface where traction on both wheels is fairly even a standard diff will leave two nice big black marks as well!!! There is a big MISCONCEPTION that standard or "open wheel" diffs only drive one wheel - in fact even an open wheel diff drives BOTH wheels, but the result when the traction on one side is less than the other is that side will spin more and the side with good traction will lose driving force. A more useful test would be to start off with one wheel on the bitumen and the other on the dirt and see how the car takes off with firm but not mad acceleration - if it's very difficult to control wheelspin on the wheel which is off the bitumen then it's probably a std diff (or sick / badly adjusted LSD) - but if it's possible to get rolling without too much difficulty controlling that wheelspin then there's a good chance she's LSD.
_________________ Sold the Greenmachine - now driving 2015 Jeep Cherokee Trailhawk. |
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| Kingkezza |
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Here's an easy way to test if you have and lsd or not without doin burnouts or other s*$t that can hurt you'r diff:
Jack the back end up after schocking the front wheels. Make sure the car is in neutral and the handbrake released. Spin one of the rear wheels with your hand. If the other rear wheel turns in the same direction as the one you are turning you have lsd. If the other rear wheel turns in the opposite direction, then you have a conventional.
_________________ 5spd Heritage Green EL XR6. Wheels by ROH. Stereo by Clarion. Exhaust by Pacemaker & Lukey. Suspension by Whiteline, Durashock and K-Mac. |
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| Greenmachine |
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kinkezza's absolutely right there - I have to make it clear tho that I wasn't talking about being brutal (perhaps using the term "moderate" is even over the top for what I was trying to suggest) - ie. if the wheel starts spinning there's no point continuing to lay into it - and you'll find that with a std diff the off road wheel will slip quite easily with just mild acceleration. The difference between that wheel off the road wanting to slip really easily whilst the car makes little forward progress vs the car moving off with decent traction will be quite noticeable.
_________________ Sold the Greenmachine - now driving 2015 Jeep Cherokee Trailhawk. |
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| janek |
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Posts: 413 Joined: 14th Nov 2004 Ride: 2000 AU II Fairmont Ghia Location: Brisbane Most of the time/Sydney Some of the time |
quick question. i have a 3.45 s/s diff. whats it gonna cost me to get it 3.45 lsd?
_________________ Organza 2000 AU 2 Fairmont Ghia
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| Blu Falc |
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{USERNAME} wrote: quick question. i have a 3.45 s/s diff. whats it gonna cost me to get it 3.45 lsd?
The cost of a hemisphere when you find one |
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| janek |
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Posts: 413 Joined: 14th Nov 2004 Ride: 2000 AU II Fairmont Ghia Location: Brisbane Most of the time/Sydney Some of the time |
which would be roughly how much?
_________________ Organza 2000 AU 2 Fairmont Ghia
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| Big Kev |
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{USERNAME} wrote: which would be roughly how much?
i think LSD hemisphere is what guys round the 300-350 mark
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| Blu Falc |
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yer about that
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| SIM |
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another quick question.. I have the stock 3.23 limited slip in my ghia, i seem to have quite a bit of "backlash" i think they call it ahh i cant remember but anyway the diff's done a few k's now, way over 230 000 and there is a knocking noise at certain speeds when slowing down from the rear somewhere. Just wondering what would i be looking at spending if i wanted to upgrade it to a 3.45 and would there be any real diffrence.
Also can i just get a 3.45 centre and have it fitted in my 3.23?
_________________ RIP Scotty |
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| mswyld |
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i have a mustang with what they call a 8 & 3/4 inch diff
please clarify what it is! |
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| mswyld |
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i have a mustang with what they call a 8 & 3/4 inch diff
please clarify what it is! |
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| mswyld |
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i have a mustang with what they call a 8 & 3/4 inch diff
please clarify what it is! |
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| GTBob |
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Not as strong as a 9 inch
_________________ Rotten Old Revhead!!! XW GTHO + EF ex cop car (exractors 2.5 cat back zorst !6" Simmons K&N +airbox mods Lowered with Bilstein shocks+Whiteline Bars NEXT THING Swap HO for GTP or Ferrari! |
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