84 replies to this topic

[postve]

Hey guys,

I run a 1293 VMAX mini with a DAM2886 box and 3:44 FD. Getting sick of the high revs and useless 1/2 gear so looking at either 3.1 or 2.95 FD. Only question I have is the box I have which seems to be some sort of hybrid A/A+ mix from what I read. Also I see that 2.95 is for A+ and I know my engine is pre-A+. I might have to settle for a 3.1 but curious about the doability of 2.95 with the gear box I have..any feedback would be appreciated
.

[Spider]

I almost certainly guarantee if you remove the Mainshaft Bearing Retaining Plate, with an engine like yours especially, you'll find the case is cracked on the second bolt from the back of the box. They weren't a good case. Every single one I see from big wheel Mokes is cracked. I would suggest finding a DAM5626 Case for what you have.
 

Coming back to your original question regarding gear and in particular, final drive ratios, your gear ratios (assuming original gears) are;-

 

1st     3.52:1

2nd    2.21:1

3rd    1.41:1

 

If you find 1st and 2nd useless, you won't want the gears that come in the 5626 boxes.

I'd suggest perhaps looking at a Cooper S Gearset;-
 

1st     3.30:1

2nd    2.07:1

3rd    1.35:1

 

together with a 3.2:1 or maybe a 3.1:1 Final Drive might be more what you're after. The 2.95 Final Drive will fit (depending on which Mainshaft Bearing Retainlng Plate you use, you might need to fettle that), however, I think you'll find that a bit too tall.

 

 

[postve]

Sound advice and I did have it out before (2021 and add xpin for super charger) and here’s some pics spidey - interested your thoughts

[postve]

So Spidey I checked and block says 12g 1279 block pre a+ and chatted with mini spares who advised 3.1 will fit just fine - not at all interested in cooper s gearset - regarding 2.95 though, with the massive torque of the M45 super charger I don’t think it will be too tall?

[KTS]

I almost certainly guarantee if you remove the Mainshaft Bearing Retaining Plate, with an engine like yours especially, you'll find the case is cracked on the second bolt from the back of the box. They weren't a good case. Every single one I see from big wheel Mokes is cracked. I would suggest finding a DAM5626 Case for what you have.
 

Coming back to your original question regarding gear and in particular, final drive ratios, your gear ratios (assuming original gears) are;-

 

1st     3.52:1

2nd    2.21:1

3rd    1.41:1

 

If you find 1st and 2nd useless, you won't want the gears that come in the 5626 boxes.

I'd suggest perhaps looking at a Cooper S Gearset;-
 

1st     3.30:1

2nd    2.07:1

3rd    1.35:1

 

together with a 3.2:1 or maybe a 3.1:1 Final Drive might be more what you're after. The 2.95 Final Drive will fit (depending on which Mainshaft Bearing Retainlng Plate you use, you might need to fettle that), however, I think you'll find that a bit too tall.

 

 

possibly something else to consider is the effect of playing around with the drop gear ratios

 

for example,  with a 29tooth (std) primary gear and 28tooth (eco) input gear, the effective gear ratios quoted above become

 

1st     3.40:1

2nd    2.14:1

3rd    1.38:1

4th     0.97:1

 

..with a corresponding effect on the FD selected (i.e. 3.44 becomes 3.32)

[postve]

Thx guys and slightly outside of my comfort zone as wanted to stick with basically dropping in either 3.1 or thinking more 2.95 - super Charger would be quite effective in dealing with the tallness - another UK buddy swears by the 3.1 so might go that route as from what I hear easier to install

[Spider]

not at all interested in cooper s gearset

 

Sorry, but I think you dismissed this all too quick

 

Getting sick of the high revs and useless 1/2 gear
.

 

Changing the final dive ratio will go some way to helping with the 'useless 1/2 gear' but fitting taller 1st and 2nd gears, that the S Gear set have will be a bigger improvement.
 

[postve]

Spidey the reason I am dismissing the reco as wanted to keep it simple and just swap out the final 3:44 to let’s say a 3:1, (I am not disputing your logic as it is quite correct) I want to stay away from anything else related to the gears is my point - you think I will short change myself and is it complicated ?? Tracking down a good box over here in Canada is like striking gold - near impossible ..

Edited by postve, 09 October 2022 - 11:54 PM.

[Spider]

Spidey the reason I am dismissing the reco as wanted to keep it simple and just swap out the final 3:44 to let’s say a 3:1, (I am not disputing your logic as it is quite correct) I want to stay away from anything else related to the gears is my point - you think I will short change myself and is it complicated ?? Tracking down a good box over here in Canada is like striking gold - near impossible ..

 

Swapping out the final drive involves the changing of 2 gears + shimming up the diff + locking the gearbox in 2 gears to get the pinion nut undo and done up.

Swapping from the gears you have also involves changing of 2 gears + locking the gearbox to undo and do up the first motion shaft nut.

 

Overall, they are similar jobs to do and the 2 gears needed for the swap in ratios last time I looked were easily available new.

[postve]

Thx Spidey and familiar with the effort - is there any video on line and appreciate the help m8- at the end of the day just going to swap out the final gear as hearing from those who have similar set up to mine - will do the trick

Edited by postve, 10 October 2022 - 11:03 AM.

[Spider]

Thx Spidey and familiar with the effort - is there any video on line and appreciate the help m8- at the end of the day just going to swap out the final gear as hearing from those who have similar set up to mine - will do the trick

 

The few videos I have watched I wouldn't recommend I'm sorry, but it's not a difficult job.

[postve]

Thx again Spidey!!

[postve]

Hey Spider,

Found this video and engine come out today - will show box and look for those cracks if any

[Spider]

Hey Spider,

Found this video and engine come out today - will show box and look for those cracks if any

 

The few videos I have watched I wouldn't recommend I'm sorry,

 

[postve]

Thx Spider and interestingly enough the video I sent works wonders for me, gear box off and inspection done - will send a few pics soon - and removing Diff tomorrow and will swap final drive as bought the 3.1 FD. Just cleaning it up for block painting   Screenshot 2022-10-25 091106.jpg   75.03K   2 downloads

 

Next step - off with flywheel and bell housing then finally the diff..

Edited by postve, 25 October 2022 - 01:17 PM.