Skrimgo Posted April 28, 2013 Share Posted April 28, 2013 Hi all, this has probably been asked a few times, tried searching but couldn't find many results and didn't want to sit behind a screen for hours looking page after page.Are there any major differences between RB25DE and RB20DET gearboxes?I currently drive a 20det powered R32 that gives me trouble trying to change into second unless I take it real easy and I've been offered an RB25DE gearbox for free from an R33.Are the gear ratios the same and is there anything major I need to look out for?Might pay to even post some more info for other people to see! Thanks in advance. Link to comment https://www.sau.com.au/forums/topic/424278-differences-between-gearboxes/ Share on other sites More sharing options...
White GTS-T Posted April 28, 2013 Share Posted April 28, 2013 R32 RB20DET and R33 RB25 DE = Same gearbox. Try this before you swap out boxes. http://justjap.com/store/product.php?productid=17082 1 Link to comment https://www.sau.com.au/forums/topic/424278-differences-between-gearboxes/#findComment-6830270 Share on other sites More sharing options...
GTSBoy Posted April 28, 2013 Share Posted April 28, 2013 The ratios are in fact slightly different. I think the biggest difference is in 3rd and 5th. The RB25DE ratios actually suit the RB20DET better than the original box. I was in the same position you are in, did the 25DE box instead and was happy. Link to comment https://www.sau.com.au/forums/topic/424278-differences-between-gearboxes/#findComment-6830358 Share on other sites More sharing options...
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