For a while I was pretty sure that I wanted to get a RB25DET, but then I started looking at buying a RB20DET. Heres what I have found:
1. Its less than half the price of the RB25det, and only 40 HP less. If figure that will all the money I will be saving on the RB20DET I will be able to upgrade the turbo and everything to well above the RB25DET's power.
2. Its still cheaper than the SR20DET so Im starting to think this is the motor for me as I am not planning on spending my life's savings on the car!
So its these basic things that have me wanting to buy the RB20dET instead of the RB25DET. I know for the RB25DET swap you need a new driveshaft fabricated, do you need the driveshaft for the RB20DET also? And are parts between any of the RB series engines interchangeable? Are there any other major things that the RB20DET swap would require that the SR20DET wouldn't? Thanks in advance for your help everyone.
RB20DET Swap Questions....
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spec-v5150
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Re: RB20DET Swap Questions....
RacerTim wrote:For a while I was pretty sure that I wanted to get a RB25DET, but then I started looking at buying a RB20DET. Heres what I have found:
1. Its less than half the price of the RB25det, and only 40 HP less. If figure that will all the money I will be saving on the RB20DET I will be able to upgrade the turbo and everything to well above the RB25DET's power.
2. Its still cheaper than the SR20DET so Im starting to think this is the motor for me as I am not planning on spending my life's savings on the car!
So its these basic things that have me wanting to buy the RB20dET instead of the RB25DET. I know for the RB25DET swap you need a new driveshaft fabricated, do you need the driveshaft for the RB20DET also? And are parts between any of the RB series engines interchangeable? Are there any other major things that the RB20DET swap would require that the SR20DET wouldn't? Thanks in advance for your help everyone.
My snetiments exactly. The rb20 does NOT need a new driveshaft. I hear the timing belts and what not are interchangable between the 3....not 100% on that. I dont think there is anything major that needs to be done. After searching and speaking with people who have done the swap, it sounds pretty straightforward. Make sure and get a front clip
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RubHamuSan
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spec-v5150
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RubHamuSan
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spec-v5150
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RubHamuSan
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yeah that is so true since hondas have been doing it forever. 1.6 head on a 2.0 block. would never work out would it.like i said before i will have this information soon. being that i will physicaly look at both and check with my eyes before i say it will or will not work;)and assumption is the mother of all phuck ups.also one more thing. who's to say i won't have a head gasket made for this swap.
What's your name and what's your relationship to unstable?RubHamuSan wrote:yeah that is so true since hondas have been doing it forever. 1.6 head on a 2.0 block. would never work out would it.like i said before i will have this information soon. being that i will physicaly look at both and check with my eyes before i say it will or will not work;)and assumption is the mother of all phuck ups.also one more thing. who's to say i won't have a head gasket made for this swap.
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RubHamuSan
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i have a freind who works there. why do you ask?and telling you my name is a little personal.look i'm not trying to be a *** or anything i way just stating that,don't assume anything till you see for yourself. especially when it has been done with other motors. thats all.i'm not trying to make you look bad or anything.
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spec-v5150
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Snakeyes39
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i'm just finishing up my swap right now, the only thing u have to do different is either buy custom motor mounts or go with a R32, A31 cefiro, or R33 laurel crossmember.
i went the crossmember route cuz i thought i'd be saving a bunch of money doing that, but it kinda bit me in the a$$. basically my engine sits a bit too high for the original hood, i even put 4mm worth of spacers to drop the crossmember alittle. i read a thread on some aussie site that they lowered the crossmember 10mm to clear the hood, but with the equipment i had, i don't see that as being possible.
so right now i'm still looking for a hood that will fit my car, i'm probably gonna end up having to get a fiberglass hood with some kind of scoop and then have someone fabricate that to fit.
as far as interchangeable parts, i'm pretty sure basic things will work. exhaust side of the 20 and 25 are basically identical but the intake is different. u can also throw some 26 parts in pretty easily, i'm using a triple plate GT-R clutch, fuel pump and also got some fuel injectors off a GT-R i'm about to have put in.
oh, and another special note: if the engine u originally have in your 240 is a single cam KA (like mine was) u're going to have to grab some new powersteering lines if u plan on keeping the powersteernig. i'm using the lines out of a '95 twin cam KA and i'm still kind of in the process of making it work, not sure what the problem is, but i'm pretty sure it's just for my car and not everyone elses, i may have bent a line.....
hope this helps u out in some way...
i went the crossmember route cuz i thought i'd be saving a bunch of money doing that, but it kinda bit me in the a$$. basically my engine sits a bit too high for the original hood, i even put 4mm worth of spacers to drop the crossmember alittle. i read a thread on some aussie site that they lowered the crossmember 10mm to clear the hood, but with the equipment i had, i don't see that as being possible.
so right now i'm still looking for a hood that will fit my car, i'm probably gonna end up having to get a fiberglass hood with some kind of scoop and then have someone fabricate that to fit.
as far as interchangeable parts, i'm pretty sure basic things will work. exhaust side of the 20 and 25 are basically identical but the intake is different. u can also throw some 26 parts in pretty easily, i'm using a triple plate GT-R clutch, fuel pump and also got some fuel injectors off a GT-R i'm about to have put in.
oh, and another special note: if the engine u originally have in your 240 is a single cam KA (like mine was) u're going to have to grab some new powersteering lines if u plan on keeping the powersteernig. i'm using the lines out of a '95 twin cam KA and i'm still kind of in the process of making it work, not sure what the problem is, but i'm pretty sure it's just for my car and not everyone elses, i may have bent a line.....
hope this helps u out in some way...
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spec-v5150
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Snakeyes39 wrote:i'm just finishing up my swap right now, the only thing u have to do different is either buy custom motor mounts or go with a R32, A31 cefiro, or R33 laurel crossmember.
i went the crossmember route cuz i thought i'd be saving a bunch of money doing that, but it kinda bit me in the a$$. basically my engine sits a bit too high for the original hood, i even put 4mm worth of spacers to drop the crossmember alittle. i read a thread on some aussie site that they lowered the crossmember 10mm to clear the hood, but with the equipment i had, i don't see that as being possible.
so right now i'm still looking for a hood that will fit my car, i'm probably gonna end up having to get a fiberglass hood with some kind of scoop and then have someone fabricate that to fit.
as far as interchangeable parts, i'm pretty sure basic things will work. exhaust side of the 20 and 25 are basically identical but the intake is different. u can also throw some 26 parts in pretty easily, i'm using a triple plate GT-R clutch, fuel pump and also got some fuel injectors off a GT-R i'm about to have put in.
oh, and another special note: if the engine u originally have in your 240 is a single cam KA (like mine was) u're going to have to grab some new powersteering lines if u plan on keeping the powersteernig. i'm using the lines out of a '95 twin cam KA and i'm still kind of in the process of making it work, not sure what the problem is, but i'm pretty sure it's just for my car and not everyone elses, i may have bent a line.....
hope this helps u out in some way...
If the Rb swap is the same as the SR, you can utilize the SOHC power steering lines. SRswap putlines it on theri faq and htis site does as well. Of course the easiet route to go is DOHC, but work with what you have uless you wann apya 100 bucks for some damn lines....
http://sr20.hybrids.jp/install....html
Nismo241 hood closes just fine....he can provide some insight on that
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SHIFT_Lock
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Snakeyes39
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spec-v5150 u said......
Nismo241 hood closes just fine....he can provide some insight on that
well let me know how he did that cuz i still haven't bought a new hood yet, but i still need to grab a silvia hood anyways since i did the swap. i'd appreciate it if u could tell how it works, also, i got a FMIC and my IC piping across the front sits higher than anything else in the bay........
Nismo241 hood closes just fine....he can provide some insight on that
well let me know how he did that cuz i still haven't bought a new hood yet, but i still need to grab a silvia hood anyways since i did the swap. i'd appreciate it if u could tell how it works, also, i got a FMIC and my IC piping across the front sits higher than anything else in the bay........
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RubHamuSan
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Snakeyes39
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