simple question- diff ratios

japdrifter_s13

japdrifter_s13

running out of skill
ok...so im hearing people benifit with better acceleration with a different diff/ratio

talk to me...i have an s14a weldertron atm in my s14a.

wat would you guys recommend and is there really that much of a difference?

thanks in advance breadbins:thumbs:
 
iv a 4.4 diff in my sil...find it very good for driftin over the standard 3.9 diff ...breaks traction an awful lot easier an its easier to maintain the drift too
 
in my opinion below 350bhp 4.4:1 above 400bhp you really should be on a 4.1:1

Personally i prefer the 4.1:1 as it gives me greater wheel speed which means more smoke, i find the 4.4 too short.
 
you've asked about acceleration only - yes, shorter ratios will give better acceleration of course.
for drifting, in addition to what the others said, it also depends on the track. if it's a low speed track, i'd leave in the 3.7 and stay in 2nd. for faster tracks stick in a 4.3 or 4.4 and grab 3rd.
 
cheers for the advice guys.... so if im looking for a diff ratio to use on a daily basis, want quick acceleration and potentially compete with next yr wat ratio could you guys recommend? 4.4:1

bearing in mind the cars no more than 300hp atm
 
I ment 4.636:1 i was on iphone typing shit.

4.900 - C23 Serena SR20DE 4WD Auto

4.636 - C23 Serena SR20DE 4WD Manual, C23 CD20T 4WD

4.375 - R32 RB20DET 4WD, A31 Cerfiro RB20DET 4WD

4.363 - R34 RB25DE 4WD, R34 RB25DE Manual, R34 RB20E, R33 RB25DE 4WD, R33 RB25DET Auto, R33 RB25DE, R32 RB20DET, R32 RB20E,
C35 Laurel RB25DE 4WD Auto, C34 Laurel RB25DE 4WD Auto, C34 Laurel RB25DE Auto, C33 Laurel RB20DE Manual
A31 Cerfiro RB20DET, A31 Cerfiro RB20DE Manual, S13 CA18DET, S13 CA18DE, C23 Serena SR20DE 2WD, C23 Serena CD20T 2WD

4.111 - R34 RB25DET Auto, R33 RB25DET Manual, C35 Laurel RB25DET Auto, C35 Laurel RB20DE Auto, C34 Laurel RB25DET Auto, C34 Laurel RB20DE Auto,
S13 SR20DE (ABS),

4.083 - R34 RB25DE Auto, R33 RB20E, R32 RB20E (ABS), C33 Laurel RB20DE Auto, A31 Cerfiro RB20DE Auto,
S15 SR20DE, S14 SR20DET Manual, S14 SR20DE Manual, S13 SR20DET Manual, S13 SR20DE (ABS), S13 SR20DE

3.916 - S13 SR20DET Auto, S14 SR20DET Auto, S15 SR20DET Auto, A31 Cerfiro RB20E. 5 & 6 bolt

3.692 - S14 SR20DET ADM Manual, S15 SR20DET Manual. 5 & 6 bolt

3.583 - R33 RB25DE Auto, C33 Laurel RB20E Auto
 
so if i was to get hold of a c23 serena 4wd manual diff, weld the shit out of it then fit it into my s14a casing, is that do-able?

can i just bolt it all back in?
 
superclarkey can you confirm the diff ratio for a a31 rb20e auto diff i think its supposed to be 4.4:1 but can you confirm
 
the hat said:
superclarkey can you confirm the diff ratio for a a31 rb20e auto diff i think its supposed to be 4.4:1 but can you confirm
Click to expand...


Im prety sure thats a 4.3:1 in there mate.

4.3:1s are mint for most things but with a bit of lag they can be a PITA on some tracks.

Iv used a number of differant ratios, 4.1 is the best inbetween and one of the most common to get hold of.

Im swapping and changing a bit this year...
i.e
Stowe 4.1 didnt work so 4.3 went in and was mint,
4.1 was mint at silverstone,
for norfolk and the KD race in portugal a 3.7 will be going in,
etc etc etc
 
cheers polo im putting a s13 vlsd in the cef as its a daily and the missus doesnt want a welder in the car so the 4.3 will be up for grabs
 
superclarkey can you confirm the diff ratio for a a31 rb20e auto diff i think its supposed to be 4.4:1 but can you confirm

My VIN plate says RC39

IMG_8327.jpg
 
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