Sheldon Posted March 20, 2020 Share Posted March 20, 2020 Hi, I bought an r32 gtst almost a year back and ive been fixing all the little bits and pieces to get it to the stage of a road worthy. The guy i bought it off said its got an rb25det, The motor is N/A at the moment but im not sure if its de or det. The head is stamped 75T and so is the block. Any way of telling if it was originally turbo'd. New to the skylines and tryna learn. Thanks sorry if this is in the wrong place. Link to comment https://www.sau.com.au/forums/topic/480000-not-sure-if-my-rb25-is-a-det-or-de/ Share on other sites More sharing options...
Duncan Posted March 20, 2020 Share Posted March 20, 2020 Well, what it originally left the factory with is stamped on the chassis plate on the firewall. R32 GTST came with rb20det not rb25det, although some late r32 gts came with rb25de no t. But I guess you are asking if you have an rb25det motor with a turbo removed, or an rb25de. One way to tell should be a compression test as the rb25det will have lower compression, not sure other certain ways because it seems some rb25de blocks had plugged ports for the oil feed and oil return instead of nothing at all (although, no oil ports would confirm rb25de) Quick search on here suggests 75T was the casting number for both rb25de and rb25det from R33 gtst, so that doesn't help. Link to comment https://www.sau.com.au/forums/topic/480000-not-sure-if-my-rb25-is-a-det-or-de/#findComment-7926916 Share on other sites More sharing options...
Dil-Dog Posted March 21, 2020 Share Posted March 21, 2020 Yeah i am trying to understand... So you wanna know if its a 1. De+t 2. DET turned de 3. A true Factory DE/Na once you tell us exactly what you wanna know, we can tell you what to look for. Link to comment https://www.sau.com.au/forums/topic/480000-not-sure-if-my-rb25-is-a-det-or-de/#findComment-7926935 Share on other sites More sharing options...
Sheldon Posted March 21, 2020 Author Share Posted March 21, 2020 Sorry the engine was swapped to an rb25 by one of the previous owners and I’m trying to figure out if it’s a det Turned de or if it’s a factory de Link to comment https://www.sau.com.au/forums/topic/480000-not-sure-if-my-rb25-is-a-det-or-de/#findComment-7926939 Share on other sites More sharing options...
GTSBoy Posted March 21, 2020 Share Posted March 21, 2020 Take off sump. look for oil squirters. Other, less thorough option is to see if the injectors are DE or DET. Or you could look at the ECU's part number. Link to comment https://www.sau.com.au/forums/topic/480000-not-sure-if-my-rb25-is-a-det-or-de/#findComment-7926942 Share on other sites More sharing options...
Sheldon Posted March 21, 2020 Author Share Posted March 21, 2020 How would I find out if injectors are DE or DET? Link to comment https://www.sau.com.au/forums/topic/480000-not-sure-if-my-rb25-is-a-det-or-de/#findComment-7926944 Share on other sites More sharing options...
KiwiRS4T Posted March 21, 2020 Share Posted March 21, 2020 By colour. Don't ask me which...Google and ye shall find. Although on second thought they will probably be DE injectors regardless. Link to comment https://www.sau.com.au/forums/topic/480000-not-sure-if-my-rb25-is-a-det-or-de/#findComment-7926945 Share on other sites More sharing options...
Dil-Dog Posted March 21, 2020 Share Posted March 21, 2020 Okay i know exactly how u can tell... but is the engine in or out of the car? Link to comment https://www.sau.com.au/forums/topic/480000-not-sure-if-my-rb25-is-a-det-or-de/#findComment-7926960 Share on other sites More sharing options...
jmknights93 Posted March 21, 2020 Share Posted March 21, 2020 Take some photos? Link to comment https://www.sau.com.au/forums/topic/480000-not-sure-if-my-rb25-is-a-det-or-de/#findComment-7926962 Share on other sites More sharing options...
Sheldon Posted March 22, 2020 Author Share Posted March 22, 2020 The engine is still in the car and I’ll take some photos but of what? The injectors or the engine Link to comment https://www.sau.com.au/forums/topic/480000-not-sure-if-my-rb25-is-a-det-or-de/#findComment-7926978 Share on other sites More sharing options...
Rusty Nuts Posted March 22, 2020 Share Posted March 22, 2020 Get yourself an el cheapo borescope from ebay and take a look down the spark plug holes at the piston tops. Link to comment https://www.sau.com.au/forums/topic/480000-not-sure-if-my-rb25-is-a-det-or-de/#findComment-7926980 Share on other sites More sharing options...
Dil-Dog Posted March 22, 2020 Share Posted March 22, 2020 This is your best bet i can think of...That red circle is your turbo oil drain. if in that area on your block is a blank/does not exists then it is 100% a de block. If this spot on your block has any kind plug of bolt or block off that goes into a hole, then its a turbo block that plugged up. Link to comment https://www.sau.com.au/forums/topic/480000-not-sure-if-my-rb25-is-a-det-or-de/#findComment-7926982 Share on other sites More sharing options...
Rusty Nuts Posted March 24, 2020 Share Posted March 24, 2020 On 3/22/2020 at 1:38 PM, Dil-Dog said: If this spot on your block has any kind plug of bolt or block off that goes into a hole, then its a turbo block that plugged up. Na sorry mate, have a de block here drilled and tapped for turbo oil return with a plug in it, so thats not necessarily true. Link to comment https://www.sau.com.au/forums/topic/480000-not-sure-if-my-rb25-is-a-det-or-de/#findComment-7927135 Share on other sites More sharing options...
Dil-Dog Posted March 24, 2020 Share Posted March 24, 2020 Damn bro..... i only have experience with neo’s. That must be a series 1/2 specific thing then. My 25de neo and my friends 25de neo is a blank in that location. good looking out though. @Rusty Nuts Link to comment https://www.sau.com.au/forums/topic/480000-not-sure-if-my-rb25-is-a-det-or-de/#findComment-7927138 Share on other sites More sharing options...
Rusty Nuts Posted March 24, 2020 Share Posted March 24, 2020 8 hours ago, Dil-Dog said: That must be a series 1/2 specific thing then. Yep, its a series 1 de block. Link to comment https://www.sau.com.au/forums/topic/480000-not-sure-if-my-rb25-is-a-det-or-de/#findComment-7927148 Share on other sites More sharing options...
Ben C34 Posted March 25, 2020 Share Posted March 25, 2020 15 hours ago, Dil-Dog said: Damn bro..... i only have experience with neo’s. That must be a series 1/2 specific thing then. My 25de neo and my friends 25de neo is a blank in that location. good looking out though. @Rusty Nuts It is weird they bothered drilling and tapping then plugging it, but that's what they did. What's even stranger is they did the same on rb30 blocks. Good on them for helping us out though ! 1 Link to comment https://www.sau.com.au/forums/topic/480000-not-sure-if-my-rb25-is-a-det-or-de/#findComment-7927198 Share on other sites More sharing options...
Dil-Dog Posted March 25, 2020 Share Posted March 25, 2020 Oh wow... thanks. never knew and thats good to know though. I guess nissan only hates us neo’s boyz ? Link to comment https://www.sau.com.au/forums/topic/480000-not-sure-if-my-rb25-is-a-det-or-de/#findComment-7927231 Share on other sites More sharing options...
Rusty Nuts Posted March 26, 2020 Share Posted March 26, 2020 On 3/21/2020 at 2:55 PM, Sheldon said: How would I find out if injectors are DE or DET? DE injectors are brick red colour, DET are blue Link to comment https://www.sau.com.au/forums/topic/480000-not-sure-if-my-rb25-is-a-det-or-de/#findComment-7927284 Share on other sites More sharing options...
Rusty Nuts Posted March 26, 2020 Share Posted March 26, 2020 On 3/25/2020 at 3:14 PM, Ben C34 said: It is weird they bothered drilling and tapping then plugging it, but that's what they did. The blocks would have been all turbo spec on the production line, then some bean counter said "hey we can save some yen" and got a bonus. Link to comment https://www.sau.com.au/forums/topic/480000-not-sure-if-my-rb25-is-a-det-or-de/#findComment-7927285 Share on other sites More sharing options...
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