joh21m Posted February 10, 2005 Share Posted February 10, 2005 I know this has been covered before but i searched and searched but couldnt find the info i needed. Basically my question is this... What is needed to bolt the rb25 turbo onto the rb20det? Does anything need to be changed or is it simply a bolt off - bolt on...what about gaskets? is it fine to use the old ones? oil lines? water lines? Anything that anyone can think of that needs to be changed please state what it is... also i have an rb20det in my s13...will it still all line up (dump pipe etc...)? Any answers appreciated except "Do a search". Thanks in advance, Joh Link to comment https://www.sau.com.au/forums/topic/64209-rb25-turbo-onto-rb20det/ Share on other sites More sharing options...
R31 POWER Posted February 10, 2005 Share Posted February 10, 2005 If it is a R32(silver top) Rb20det then it will bolt straight up like a Rb20det turbo.It's best to get the RB25 elbow(intercooler bend)that comes off the comp housing as it's got a bigger internal hole.Also put the Rb20det acuator on the RB25 turbs for more boost.RB20/25 dumps are the same. You can still use the RB20det elbow on the RB25 turbo but you need to drill out the 3 blot holes.Also you can use the RB25 acuator but it holds lower boost,like 7psi or something. Link to comment https://www.sau.com.au/forums/topic/64209-rb25-turbo-onto-rb20det/#findComment-1204108 Share on other sites More sharing options...
Cillham Posted February 10, 2005 Share Posted February 10, 2005 how accessable would a rb25 elbow be, ive been given the impression they are hard to find? Link to comment https://www.sau.com.au/forums/topic/64209-rb25-turbo-onto-rb20det/#findComment-1204165 Share on other sites More sharing options...
nedb Posted February 11, 2005 Share Posted February 11, 2005 check this link out. if you did a search you whould've found it. http://www.skylinesaustralia.com/forums/sh...5+turbo+upgrade Link to comment https://www.sau.com.au/forums/topic/64209-rb25-turbo-onto-rb20det/#findComment-1204989 Share on other sites More sharing options...
joh21m Posted February 11, 2005 Author Share Posted February 11, 2005 i did search but its hard to write an exact search line to bring up the correct threads thnks for the link... Link to comment https://www.sau.com.au/forums/topic/64209-rb25-turbo-onto-rb20det/#findComment-1205506 Share on other sites More sharing options...
smok74 Posted February 12, 2005 Share Posted February 12, 2005 Try getting the Ball bearing version of the RB25det turbo from the series II R33 as Nissan upgraded to BB turboes in both series II's of the R33 and the S14. Link to comment https://www.sau.com.au/forums/topic/64209-rb25-turbo-onto-rb20det/#findComment-1206570 Share on other sites More sharing options...
joh21m Posted February 12, 2005 Author Share Posted February 12, 2005 cool thanks for the info... Link to comment https://www.sau.com.au/forums/topic/64209-rb25-turbo-onto-rb20det/#findComment-1206640 Share on other sites More sharing options...
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