cheekychimp
Well-known member
This is a fairly simple question but I have had so many conflicting answers recently, that it has started to do my head in and I now don't know if I am barking up completely the wrong tree.
I have a complete 3.909 ratio transmission with correct rear differential (out of an Evo/RS GVR4) that I want to freshen up and throw in my daily.
Basic idea was simply to get one of the transmission shops to do me a straight cluster with EVO III gears and have the double synchro mods done.
Then I get told I can't run the EVO III gears in the EVO/RS box and need to use the EVO III front ring and pinion. I don't think this is correct. It will work, but in order to make it work I'm pretty sure I would then require the EVO III transfer case to get the correct ratio to match the 3.909 rear due to the EVO III front ring and pinion having one tooth less (or more?).
Everything I have seen so far suggests that the EVO/RS GVR4, EVO I and EVO II had exactly the same front ring and pinion and use a transfer case that is identical in ratio to any 1G DSM or GVR4. There are some minor differences in the individual gear ratios between the VR4 and the first two EVOs but other than that everything seems to be interchangeable.
EVO III gearsets seem to be the strongest available however and it just makes sense to get a full cluster with the synchro work done and get the box put back together over here using the original EVO/RS GVR4 front ring and pinion.
Am I missing anything here?
I have a complete 3.909 ratio transmission with correct rear differential (out of an Evo/RS GVR4) that I want to freshen up and throw in my daily.
Basic idea was simply to get one of the transmission shops to do me a straight cluster with EVO III gears and have the double synchro mods done.
Then I get told I can't run the EVO III gears in the EVO/RS box and need to use the EVO III front ring and pinion. I don't think this is correct. It will work, but in order to make it work I'm pretty sure I would then require the EVO III transfer case to get the correct ratio to match the 3.909 rear due to the EVO III front ring and pinion having one tooth less (or more?).
Everything I have seen so far suggests that the EVO/RS GVR4, EVO I and EVO II had exactly the same front ring and pinion and use a transfer case that is identical in ratio to any 1G DSM or GVR4. There are some minor differences in the individual gear ratios between the VR4 and the first two EVOs but other than that everything seems to be interchangeable.
EVO III gearsets seem to be the strongest available however and it just makes sense to get a full cluster with the synchro work done and get the box put back together over here using the original EVO/RS GVR4 front ring and pinion.
Am I missing anything here?