Omega Owners Forum

Omega Help Area => Omega General Help => Topic started by: joff on 31 July 2014, 09:56:50

Title: Diff ratio
Post by: joff on 31 July 2014, 09:56:50
Hi, is the Diff on an auto 3.2 MV6 the same as on the auto 3.2 Elite (estate and saloon) :y

Thanks for your help
Title: Re: Diff ratio
Post by: Kevin Wood on 31 July 2014, 10:16:55
Yep, they all had 3.9 diffs. :y
Title: Re: Diff ratio
Post by: chrisgixer on 31 July 2014, 10:49:19
Yep. All 3.9.

2.6 got 4.22, which gives slightly better acceleration if fitted to a 3.2, but slightly higher rpm at motorway speeds.
Title: Re: Diff ratio
Post by: joff on 31 July 2014, 19:10:20
Thank you both :y
Title: Re: Diff ratio
Post by: zirk on 31 July 2014, 20:02:11
Got 3.7 fitted both my 3.2 Estate and Saloon.  ;)
Title: Re: Diff ratio
Post by: chrisgixer on 31 July 2014, 20:11:33
Got 3.7 fitted both my 3.2 Estate and Saloon.  ;)

What is that like to drive Zirk?
Title: Re: Diff ratio
Post by: 05omegav6 on 31 July 2014, 22:10:27
Got 3.7 fitted both my 3.2 Estate and Saloon.  ;)

What is that like to drive Zirk?
Manual ;D
Title: Re: Diff ratio
Post by: chrisgixer on 31 July 2014, 22:12:39
Got 3.7 fitted both my 3.2 Estate and Saloon.  ;)

What is that like to drive Zirk?
Manual Edwardian ;D

Oh ffs. ;D
Title: Re: Diff ratio
Post by: 05omegav6 on 31 July 2014, 22:14:46
Pmsl ;D ;D ;D
Title: Re: Diff ratio
Post by: joff on 31 July 2014, 22:29:15
They got you on that one Chris :y
Title: Re: Diff ratio
Post by: cem_devecioglu on 31 July 2014, 22:39:41
did someone say something about manuals ::)


leaving the control to a 8 bit chip makes you what ? ;D
Title: Re: Diff ratio
Post by: 05omegav6 on 31 July 2014, 22:49:18
did someone say something about manuals ::)


leaving the control to a 8 bit chip makes you what ? ;D

Munkay... ::)
Title: Re: Diff ratio
Post by: zirk on 01 August 2014, 00:51:24
Got 3.7 fitted both my 3.2 Estate and Saloon.  ;)

What is that like to drive Zirk?
Sideways mostly if the LSD kicks in, but as pointed out once you get up to decent speed then its the same as yours but you have to move that stick around until you find one that works.  ;D ;)
Title: Re: Diff ratio
Post by: zirk on 01 August 2014, 22:58:29
Although on a serious note, and being a Manual and assuming I can retian the LSD Clutch Plates, Im tempted to fit a 3.45 ratio and see how drivable that is and wether it will improve the 3.2's poor mpg figures.  :-\
Title: Re: Diff ratio
Post by: chrisgixer on 01 August 2014, 23:19:37
Although on a serious note, and being a Manual and assuming I can retian the LSD Clutch Plates, Im tempted to fit a 3.45 ratio and see how drivable that is and wether it will improve the 3.2's poor mpg figures.  :-\

Where's 2woody? :-\

Suspect it will depend on the type of journey. If stop start in town perhaps an improvement as less time spent pressing the loud pedal.

If long run at motorway speeds, I'm not sure if the higher rpm will worsen mpg. Certainly on an auto, changing from a 3.9 to a 4.22 sees an increase of about 400rpm at 80mph. Which doesn't sound much, but can be slightly irritating.

It does go better and pull a higher top speed quicker. The 3.9 takes forever to get there. Your honour. :-\ ;D
Title: Re: Diff ratio
Post by: zirk on 01 August 2014, 23:52:04
Other way round Chris, the whole idea would be to increase mpg at motorway speeds, I reckon at 70 in 5th with a 3.45 ratio would work out about 2200 to 2300 against the 2600 or there abouts, question is how would it behave in first and second around town, I reckon, being a manual box, theres enough torque in a 3.2 to deal with it, thoughts.  :-\
Title: Re: Diff ratio
Post by: Kevin Wood on 01 August 2014, 23:55:10
The manual box has a stupidly short first gear so I can't see it being a problem.

Problem is, the engine is pretty flat below about 2500 RPM so it's not going to be great on the motorway, IMHO. Be in and out of 5th all the time.

Still, nothing ventured... :y
Title: Re: Diff ratio
Post by: zirk on 02 August 2014, 00:04:53
The manual box has a stupidly short first gear so I can't see it being a problem.

Problem is, the engine is pretty flat below about 2500 RPM so it's not going to be great on the motorway, IMHO. Be in and out of 5th all the time.

Still, nothing ventured... :y
Thanks Kev, to give some idea, I can wack a Manual 3.2 manual into 5th at 30 mph and drive it lightly without issues, obviously on level ground at that senario, any hill or increase in speed required, then its a change down, I really cant see a problem a 70 mph tbh, chould be wrong, but my biggest issue could be 1st and 2nd around town, although I reckon with 5 gears to play with might be worth doing some trials.  ;)
Title: Re: Diff ratio
Post by: 05omegav6 on 02 August 2014, 00:08:43
Mine used to live in fourth and fifth around town, only a problem if you need to make serious progress, but then, that's what second is for ;D
Title: Re: Diff ratio
Post by: chrisgixer on 02 August 2014, 17:00:20
Other way round Chris, the whole idea would be to increase mpg at motorway speeds, I reckon at 70 in 5th with a 3.45 ratio would work out about 2200 to 2300 against the 2600 or there abouts, question is how would it behave in first and second around town, I reckon, being a manual box, theres enough torque in a 3.2 to deal with it, thoughts.  :-\

ah, yes sorry. Well in that case I'd bet on the higher gearing not helping.  :-\ although I've probably got that arse backwards as well   :-[  ;D
Title: Re: Diff ratio
Post by: 05omegav6 on 02 August 2014, 20:17:07
Other way round Chris, the whole idea would be to increase mpg at motorway speeds, I reckon at 70 in 5th with a 3.45 ratio would work out about 2200 to 2300 against the 2600 or there abouts, question is how would it behave in first and second around town, I reckon, being a manual box, theres enough torque in a 3.2 to deal with it, thoughts.  :-\

ah, yes sorry. Well in that case I'd bet on the higher gearing not helping.  :-\ although I've probably got that arse backwards as well   :-[  ;D
Not an issue with the Monaro/VXR8, although they produce a decent slug of torque... but the effect at cruise will be similar, a lazy, economical cruiser :y
Title: Re: Diff ratio
Post by: cem_devecioglu on 02 August 2014, 23:46:36
The manual box has a stupidly short first gear so I can't see it being a problem.

Problem is, the engine is pretty flat below about 2500 RPM so it's not going to be great on the motorway, IMHO. Be in and out of 5th all the time.

Still, nothing ventured... :y


yep.. reason is to rev the engine as quick as possible..getrag 240 is also stupidly long on 2nd and 3rd.. even the 260 has shorter 2nd and 3rd..