i heard of ppl puting a mustang rear in an fd as an upgrade? is this true? what do you need to do this and what does it actualy do for the car?

 

Jimlab is putting a Cobra Diff in his FD. Check His thread.

 

Stick with your stock diff, unless you are swapping in a torquey V8. The stock diff is a torsen (Torque Sensing) LSD (Limited Slip Differential) and is actually quite good.

 

If you don't plan on drag racing or making 400+ RWHP...

The stock differential was never made to survive those conditions, and as Vosko has so obligingly proven, can come apart with an impressive amount of damage. You can upgrade the axles, and you can upgrade the differential assembly (at a cost of $1,600+ install), but you can't fix the heavy cast iron carrier, there are almost no choices for gear ratios available (and they're all expensive), and the inner axles and tripod cups are another weak point that can't be avoided.

If you're not planning on hard core drag racing, and you can live with the gear choices available, and you don't plan on pushing the car much past ~350 RWHP, then stick with the stock differential. If you put your car through severe duty or plan on making a "grip" of horsepower, then it's definitely something to consider.

 

...and let's be honest, how much skill does drag racing really take? Stick with road racing/rally/autox and you'll never need to bother with swapping out that diff, and you'll feel better for it!

 

Sorry, but the stock diff CAN survive drag launches of 600+RWHP, and has done so many times. It's just that only REAL hardcore FD drag racers know the trick of how it's done, and yes I mean leaving the stock diff casing in place, I'll tell you this much, what causes the stock diff to go is the flexing of the casing, solve that problem, and you'll stop it from breaking, and NO I'm not gonna say how it's done.

 

why not tell us how its done??? why the secrecy (SP?)??? Do you think your better then all of us if only you know how to do it? Why even mention it if you dont know or wont tell how its done?

Its kinda like saying, hey guys, i just learned how to make our trannies very relible and not grind just by doing something very simple but only the elite guys know how to do it. If you can figure it out then you will never have any type of tranny problems and I know how to do it, "and NO I'm not gonna say how it's done."

Im sorry for the language but how the f*ck are we suppose to react to a post like this???

 

i guess there's no point visiting an online forum about a certain car if no one will provide any useful tips eh?

 

yeah haaa no **** hey?

 

Spoken like someone who has never tried it before...

I suppose next you'll say there's no skill involved in NASCAR because they "only make left hand turns". Next time you're driving in heavy traffic at 200+ mph and making passes on the inside of turns, let me know.

The same thing goes for drag racing. Let me know when you run your first 11-second quarter mile, and don't be afraid to admit that the best you could manage with your 300+ RWHP car on your first day at the strip was a blistering 14-second pass...

 

Try my standard answer... "yeah, whatever".

 

Ford 8.8" vs. Mazda 203mm (8.0")...











Any questions?

 

Oh please! I'm probably making twice that and I haven't snapped my diff.




Anyways, I meant to say that, but I figured since he asked, "what do you need to do this and what does it actualy do for the car?" that he wasn't making that kind of power.