Mivec with 4WD gearbox- anyone?

[boyzone]

Guys,
Behalf of my fren to bring up this question.
he mivec gearbox got problem, plan to change but quite expensive to get back original. workshop offer him 4WD gearbox with very reasonable price..
Anyone running this set up before? can share opinion ? :hmmmm: Thanks

 

[jinkl]

ratios wont be nice
most 4wd mitsu gb's are close ratios and they r short u cant pull revs

 

[GT_AUTO]

not to mention the car will be heavy.btw,imagine all the hp have to drive
all four wheel.u might disappointed with the out come of the conversion.
u wont feel the power as it used to be.

 

[boyzone]

err... check on the 4WD gearbox's ratio .. gear teeth ratio number is low ( e.g 2.98 vs 3.083 at the 1st gear ) but cover with high final drive ratio ( >4.9 ).
it should given slow rev up but better high speed right?
Example :
3.083 -> 8000rpm = 50km/h
2.980 -> 8000rpm = 65km/h

Pls advise.. Thanks

 

[zzainudin]

bro i'm using mits 4G92 Non-Mivec ori 4wd from h/cut (lock to 2wd), pick up can rev until 7k++..
ok what,top speed can go 180 Above..

actually what engine r ur friend running

 

[jinkl]

which 4wd gearbox u talking bout bro
evo's 1'st and 2nd are very very short

 

[boyzone]

My fren engine is Mivec.
Btw, I not very sure what 4WD gear is it as not familiar ..
If not mistaken, is took from 4G93T.

 

[cooljas]

gentleman,
Lets get things rite here, the mivec gearbox ratios r shorter than the evo's or any mitsu turbo gearbox

 

[cooljas]

err... check on the 4WD gearbox's ratio .. gear teeth ratio number is low ( e.g 2.98 vs 3.083 at the 1st gear ) but cover with high final drive ratio ( >4.9 ).
it should given slow rev up but better high speed right?
Example :
3.083 -> 8000rpm = 50km/h
2.980 -> 8000rpm = 65km/h

Pls advise.. Thanks

longer ratios gearbox will have better top speed...
The one tat u gave example about 4.9FD on a 4wd gearbox...tis is a special gearbox and very diff to find in da market...

 

[deacon]

4wd gearboxes are proned to higher loss from flywheel to wheel even when locked to fwd correct?

 

[boyzone]

longer ratios gearbox will have better top speed...
The one tat u gave example about 4.9FD on a 4wd gearbox...tis is a special gearbox and very diff to find in da market...

Actually most of the 4WD gearbox is ready with >4.9 final drive ratio.
Btw, anyone had been tried with 4WD gearbox?

 

[cooljas]

Actually most of the 4WD gearbox is ready with >4.9 final drive ratio.
Btw, anyone had been tried with 4WD gearbox?

maybe u should let all of us know which turbo gearbox got 4.9fd.....thanks

 

[boyzone]

Pls refer to MIVEC Owners Group FAQ section.

 

[jinkl]

all evo's have 5.X final drives
u could try , bt in my opinion u will loose
the long revs cos its gonna shorten ur pulls

 

[cooljas]

pls bare in mind tat the individual ratios r very long....the gearbox juz have a bigger final drive.....calculate back...it might be worst than a mivec gearbox

 

[boyzone]

ya.. u are right. maybe will loose up 1st gear pick up abit.

 

[fct]

think there is 4wd version 4g92 mivec in japan.

2w ratio(mivec) 4w ratio(4g92) 4w ratio(vr4)
1st 3.363 3.083 2.846
2nd 1.947 1.684 1.684
3rd 1.285 1.115 1.115
4th 0.939 0.806 0.833
5th 0.756 0.651 0.690
Final 4.592 5.208 4.933
transfer gear NA 1.090 1.090

pls compare these few gearbox

 

[boyzone]

Thanks...
my bro just go to 4G92 non mivec with 4WD gearbox..
will keep update.