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Help with RB25DET S14 swap, first project

Rileymax
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Rileymax Apprentice

Rileymax

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Need a bit of info regarding a few things, I have a s2 RB25DET going in an S14A(where to get things and what to get)

 

Are there any shops in Aus that do a custom RB box to s14 diff driveshaft?

 

With custom mounts on the engine with an R33 crossmember, will the gearbox crossmember from a 33 work and will it mount correctly? I'd prefer to not cut or bash anything

 

How do I get the speedo to work with the s14

 

What sort of big things should I be looking to for when everything gets modplated?

 

I also currently have the head off the 25det waiting for a new headgasket and studs, are there any big things I should be doing while I have that off?

 

Sorry for the big post, just trying to learn my stuff and avoid as much labour cost as I can

robbo_rb180 Grand Master

robbo_rb180

Posted
Posted

What ever you think it's going to cost double it. 

Use speed sensor in 25 box and get a dakota digital signal converter

Measure tailshaft length and get hardy spicer to mod s14 one and put on r33 yoke

Cross members use r33 stuff but use vl engine rubber mounts will sit engine lower and gearbox crossmember needs tabs welded to move bolt holes forward. 

Mod plates will depend on the state you live in 

Basic stuff is replacing all hoses with new ones

Will need cefiro front sway bar and need to mux and match s14 & r33 power steering lines

Also check what ratio your s14 diff is as r33 use 4.11 ratio, need 1kg heavier front springs 

Rileymax Apprentice

Rileymax

Posted
  • Author
Posted
What ever you think it's going to cost double it. 
Use speed sensor in 25 box and get a dakota digital signal converter
Measure tailshaft length and get hardy spicer to mod s14 one and put on r33 yoke
Cross members use r33 stuff but use vl engine rubber mounts will sit engine lower and gearbox crossmember needs tabs welded to move bolt holes forward. 
Mod plates will depend on the state you live in 
Basic stuff is replacing all hoses with new ones
Will need cefiro front sway bar and need to mux and match s14 & r33 power steering lines
Also check what ratio your s14 diff is as r33 use 4.11 ratio, need 1kg heavier front springs 
Would I be able to just drop in the 33 steering rack with the crossmember so I don't have to mess around with power steering lines?

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