Built gearbox update page 3

Post by **Merlin** » Fri Mar 04, 2016 3:57 pm

Yeah lash / proper meshing was the reason why we did not do it ourselves.

Out of interest can you take a few pics of the diff?

Post by **Vtecmec** » Fri Mar 04, 2016 4:14 pm

I have an m2v5 mated to my h22a, it sits around 3400 rpm at 70 (gps speed not speedo). Feels nicely ratio'd and I can stay in vtec through the gears with a 5k vtec crossover.

Post by **Merlin** » Fri Mar 04, 2016 4:23 pm

The thing I liked about the M2V5 when I had my first Lude was 70mph down changes into 3rd. I cant do that anymore.

Post by **4thgenphil** » Fri Mar 04, 2016 8:01 pm

I'm sure the diff bolts are a left hand thread, i use an impact gun to remove em

Post by **newkid** » Fri Mar 04, 2016 9:18 pm

4thgenphil wrote:I'm sure the diff bolts are a left hand thread, i use an impact gun to remove em

They are but I don't have the tools to check lash etc. I'll just get it built by someone to save the hassle. Far beyond what I can do or have tools for.

Post by **newkid** » Wed Mar 16, 2016 2:04 am

Going back to this. The m2a4/b4 is showing as

M2A4 - 3.307 - 1.950 - 1.360 - 1.034 - 0.787 - 4.266
M2A4 - 3.307 - 1.950 - 1.360 - 1.071 - 0.787 - 4.266

m2f5 is this
M2F5 - 3.307 - 1.950 - 1.360 - 1.071 - 0.870 - 4.062

This is based on our own wiki and other threads, whats the correct 4th for the a4/b4

@dino, @merlin

Post by **Merlin** » Wed Mar 16, 2016 9:14 am

I think it will be this

M2A4 - 3.307 - 1.950 - 1.360 - 1.071 - 0.787 - 4.266

What difference will it make? Are you combining the gears from two boxes?

Post by **newkid** » Wed Mar 16, 2016 9:23 am

Been trying to work out differences with the final drive on the m2f5. 1.071 is obviously shorter than 1.034? If the a4/b4 was 1.034 then it's would accelerate slower yes?

Post by **Merlin** » Wed Mar 16, 2016 9:26 am

newkid wrote:If the a4/b4 was 1.034 then it's would accelerate slower yes?

Yes that is correct. lower the number, slower the acceleration.

Post by **newkid** » Wed Mar 16, 2016 9:33 am

OK cheers. Top speed = way down (not that you ever get that far anyway) 4th maybe and 5th defo going to accelerate harder. Kind of looking forward to this now.