What is needed to swap a RB into a 240sx? *FAQ*

Discuss the RB20, RB25 and RB26 series engines.
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nyc240sx
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Rb25det series 2

Re: What is needed to swap a RB into a 240sx? *FAQ* (band1t85)

Postby nyc240sx » Sat Mar 13, 2010 1:23 pm

send it over ill take care of it email me
band1t85 wrote:where or who can calibrate my speedo on s14 rb25det?


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Seanzyyy
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Re: What is needed to swap a RB into a 240sx? *FAQ* (nyc240sx)

Postby Seanzyyy » Wed Mar 17, 2010 9:52 pm

quick question...are the driveshafts for an automatic transmission and manual transmission for the rb25 the same length?as in, if you get a custom driveshaft made for an auto tranny, but do a 5 speed swap, can you use the same driveshaft?thanks

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Coolwhip
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Re: What is needed to swap a RB into a 240sx? *FAQ* (Seanzyyy)

Postby Coolwhip » Thu Mar 18, 2010 1:46 am

Seanzyyy wrote:quick question...are the driveshafts for an automatic transmission and manual transmission for the rb25 the same length?as in, if you get a custom driveshaft made for an auto tranny, but do a 5 speed swap, can you use the same driveshaft?thanks
You can not, as the auto drive shaft and manual transmission drive shaft uses different yokes into the rear of the transmission. They also differ in length.

tyler19thd
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Postby tyler19thd » Fri Mar 26, 2010 6:23 am

i just bought a 91 240sx with no engine and im planning on rebuildning from the ground up and was considering running the rb20 but had a few concerns. wll the wire harnes match up to the 240s harness cause i was going to order the engine off of jdm.

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Noxy
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Re: (tyler19thd)

Postby Noxy » Fri Mar 26, 2010 7:32 am

The harnesses dont exactly match up per se, but you can make an RB20 to S13 harness out of the two. Search Rb20 writeup or Rb20 to s13 wiring.

OR you can pay a company or Carl H, a member on here, to do it for you for exceptionally better quality.

tyler19thd
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Re: (Noxy)

Postby tyler19thd » Sun Mar 28, 2010 4:24 pm

What about motor and tranny mounts? Will I have to redo all of that?

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Noxy
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Re: (tyler19thd)

Postby Noxy » Sun Mar 28, 2010 6:19 pm

For mounting the engine you can use the KA engine crossmember and buy aftermarket mounting brackets. With these you'll usually get brackets to mount the engine, tranny crossmember, and motor mounts.

You can also use the engine crossmember from a R32 skyline that had the RB20. It's cheaper to go this route since you can use stock KA mounts. HOWEVER, there is a high chance that you will need a new turbo elbow since the stock one might hit the steering column.

As for the transmission... If your car was an automatic, you can use the tranny crossmember and stock mount. A new crossmember comes with one of the aftermarket kits.

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Coolwhip
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Re: (tyler19thd)

Postby Coolwhip » Mon Mar 29, 2010 2:41 am

tyler19thd wrote:What about motor and tranny mounts? Will I have to redo all of that?
http://shop.rawbrokerage.com/C...7.htm


s13fever
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Re: What is needed to swap a RB into a 240sx? *FAQ* (Kamin)

Postby s13fever » Tue Aug 03, 2010 12:33 pm

RB20DETodd wrote:As for the rb20 sparkplugs i went to sparkplugs.com lol and It showed these for the rb20 BCPR5EIX-11 im running them now, i was told heat range 6 is what i should get, id like to change these plugs out, whats the #'s of what you guys are running on your rb20's?
aren't you in MD? cause i was thinking of putting an RB20det in my hatch.

Sekoo_88
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Re: What is needed to swap a RB into a 240sx? *FAQ*

Postby Sekoo_88 » Tue Aug 03, 2010 4:41 pm

OK I see that FOr the RB20 swap the OEM setup with the aftermarket mounts was recommended over Mckinney but what about the RB25, would the Mckinney setup be beter over the R33 cross member with the Syko mounts? Im putting the RB25 into an S14 and im buying the Mckinney downpipe either way but i wanted to knw what would be betr the Mckinney or the Syko iv gotten mixed answers i would think that the SYKO is betr cus its closer to factory but i wanna knw ur guyss answers.

RBnissan240sx
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Re: What is needed to swap a RB into a 240sx? *FAQ*

Postby RBnissan240sx » Wed Aug 18, 2010 11:23 pm

Hey guys i am doing this RB25DET swap in my 1990 nissan 240sx, now i found these mounts on ebay, and i am really considering them because i dont want to pay 500 ****ing $$ for mounts. can anyone tell me if these are good?

http://cgi.ebay.com/ebaymotors/RB20DET- ... 500wt_1182

Thanks

danielmcn
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Re: What is needed to swap a RB into a 240sx? *FAQ*

Postby danielmcn » Thu Aug 19, 2010 8:22 am

RBnissan240sx wrote:Hey guys i am doing this RB25DET swap in my 1990 nissan 240sx, now i found these mounts on ebay, and i am really considering them because i dont want to pay 500 ****ing $$ for mounts. can anyone tell me if these are good?

http://cgi.ebay.com/ebaymotors/RB20DET- ... 500wt_1182

Thanks
not the right section but I have those with my rb20 with no problem

RBnissan240sx
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Re: What is needed to swap a RB into a 240sx? *FAQ*

Postby RBnissan240sx » Thu Aug 19, 2010 6:23 pm

yea sorry i am just new to this forum. But thank you very much it is just that i dont want to spend 500$ on some ****ing mounts


Thanks

RBnissan240sx
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Re: What is needed to swap a RB into a 240sx? *FAQ*

Postby RBnissan240sx » Thu Aug 19, 2010 6:24 pm

sorry and just one more thing you have to take out the stock KA mounts when you put those on correct?

Thanks

RBnissan240sx
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Re: What is needed to swap a RB into a 240sx? *FAQ*

Postby RBnissan240sx » Mon Aug 23, 2010 1:37 pm

danielmcn wrote:
RBnissan240sx wrote:Hey guys i am doing this RB25DET swap in my 1990 nissan 240sx, now i found these mounts on ebay, and i am really considering them because i dont want to pay 500 ****ing $$ for mounts. can anyone tell me if these are good?

http://cgi.ebay.com/ebaymotors/RB20DET- ... 500wt_1182

Thanks
not the right section but I have those with my rb20 with no problem

Hey man did you have to take out the mounts that sit on the crossmember or do you leave those on and bolt them right up to that?

raymond.j.thomas1
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Re: What is needed to swap a RB into a 240sx? *FAQ*

Postby raymond.j.thomas1 » Wed Sep 29, 2010 8:08 pm

i cant find this so im gonna ask! what size innercooler and pipeing do ineed for a rb25det swap into a 90 240sx

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Noxy
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Re: What is needed to swap a RB into a 240sx? *FAQ*

Postby Noxy » Thu Sep 30, 2010 9:43 am

Depends on what intercooler your getting for your car. If your going to be using a stock sidemount intercooler, the stock piping is 2.5" (At least I'm pretty sure it is, but I'm not near mine right now...). As far as FMIC, you could use 3" piping, but you might have to get a reducer coupler if the crossover pipe is smaller. Hope that helps!

raymond.j.thomas1
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Re: What is needed to swap a RB into a 240sx? *FAQ*

Postby raymond.j.thomas1 » Thu Sep 30, 2010 11:17 am

i have the gretty style intake mani and im going with the q45 tb so im goin fmic how long and tall does it have to be to fit in the bumper i know i will need to do some triming!

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Noxy
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Re: What is needed to swap a RB into a 240sx? *FAQ*

Postby Noxy » Thu Sep 30, 2010 2:59 pm

Ah. Well I ran an rb20, but my friend has the greddy manifold with a larger throttle body and he is running 3" piping and a 32"x12"x3" intercooler, but yes trimming is involved :)

raymond.j.thomas1
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Re: What is needed to swap a RB into a 240sx? *FAQ*

Postby raymond.j.thomas1 » Mon Nov 29, 2010 8:41 pm

so im about to get some money togeather and i need a down pipe and a test pipe! where can i find these for a s13 im going with a megan racing type 2 exaust. would it be easyer to have them fabed at a shop?

240boosted
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Re: What is needed to swap a RB into a 240sx? *FAQ*

Postby 240boosted » Fri Dec 17, 2010 12:29 am

here you go


Tach Recalibration.

1. Pull Cluster
2. Remove Backin and Clear plastic cover for the gauge.
3. Take a sharpie and mark where the needle sits on the gauge face so when you're pulling the needles off you'll know where it sits so its not screwed up when you put them back on, you can also mark the spot it sits on.
4. Remove the gauge faces.
5. Where the tachometer face is... there is a variable resistor that you can stick a screwdriver in.
6. Ussually you turn it all the way to the left.
7. Once you've done that, do this entire process in reverse order.

Now since all motors are a little different and so are the electrical outputs, you might have to pull it back out, an then turn it a litte more right and a little more right, to get it perfect. Just keep doing it untill you're satisfied or if you have an SAFC it makes it alot easier to calibrate.


When using the sharpie on your gauge cluster, to get the stuff off, all you need it some axe body spray, or some red zone body spray. Apply it to some cloth and dab it onto the area that the sharpie has been applied to and it will either slowly or pretty much instantly come off.

If i left out anything or you're still confused quote and reply to this.

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Patrick StarFish
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Re: What is needed to swap a RB into a 240sx? *FAQ*

Postby Patrick StarFish » Sun Aug 07, 2011 2:38 pm

i know this question has been asked a million times but i have looked everywhere and can't really find any decent info on swapping a rb26 into a s13. i can find info on rb25 swaps and builds but no solid info or pics of that matter to help me out. just looking for info if i have to bang out spots on the firewall, oil pan modifications, and wiring. if anyone could help would be greatly appreciated!

G35to240SXRB26DETT
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Re: What is needed to swap a RB into a 240sx? *FAQ*

Postby G35to240SXRB26DETT » Fri Aug 19, 2011 6:24 am

Hi Joe..I was reading up on the swap by GTRs13 (AWD 240sx RBxxDET(T) swap!) i didn't want to bring it back from the dead but it does have detailed info for the S13 all the pics are down:( I'm a newbie here but not to building engines, fabing, painting, designing and what not. Just wondering if there is a database that these pics are stored on. I can draw an image from some of the text but would like to see the details and what I'll be doing with my S14. I'm heading back to AZ to get my turbo civic and get it retuned by Joe Locash, I see you are in Phx I'm from mesa:) Well I hope you or another member can assist with this. In advance Thanks!

;)

Got PSI
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Re: What is needed to swap a RB into a 240sx? *FAQ*

Postby Got PSI » Tue Nov 22, 2011 10:43 am

Quick question for anyone who may know....I'm prepping to do a RB25DET swap in my S14, and want to keep the cruise control feature. I know that Wiring Specialties makes a harness that retains the feature, but the throttle body pulley on my KA has two slots for both cables, whereas the RB only has one. I've done a little research and saw something about welding a pulley on to the RB TB, or replacing the pulley with the one off a KA, but wanted to get confirmation. Also would it be easier to achieve with a Q45 or some other TB? Thanks in advance.

Rregl
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Re: What is needed to swap a RB into a 240sx? *FAQ*

Postby Rregl » Mon Dec 19, 2011 1:30 am

I have a question for those that might have finished this swap. It's small but bothering me. Ive assembled everything I need to get the motor into a s13. Sending the bay for paint Jan 2.
So my humble question is, when I delete ac, the two inlets at the firewall are left open. Has anyone found a cap or a way to cap these. The more aesthetic the better?
I've searched but not getting very far, and dont want to leave them open?

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Re: What is needed to swap a RB into a 240sx? *FAQ*

Postby Wiring Specialties » Tue Feb 07, 2012 4:55 pm

Got PSI wrote:Quick question for anyone who may know....I'm prepping to do a RB25DET swap in my S14, and want to keep the cruise control feature. I know that Wiring Specialties makes a harness that retains the feature, but the throttle body pulley on my KA has two slots for both cables, whereas the RB only has one. I've done a little research and saw something about welding a pulley on to the RB TB, or replacing the pulley with the one off a KA, but wanted to get confirmation. Also would it be easier to achieve with a Q45 or some other TB? Thanks in advance.
Thanks for the bump.
OP, if you havent sorted your wiring yet and are interested in a harness, let us know. I have the RB25 to S13 in stock.
[email protected]

StockAsFuhS14
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Re: What is needed to swap a RB into a 240sx? *FAQ*

Postby StockAsFuhS14 » Fri Nov 16, 2012 6:57 pm

niceee

KaotiX321
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Re: What is needed to swap a RB into a 240sx? *FAQ*

Postby KaotiX321 » Thu Dec 27, 2012 7:17 pm

wondering if all this is information is the same for a 90 hatchback and trunk style 240sx. if not what is difference?

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Re: What is needed to swap a RB into a 240sx? *FAQ*

Postby Turb0wned » Mon Jun 24, 2013 7:52 am

Quick question. Now that a few years have pasted, what are the most recommended mounts for an RB25 swap into an S14? I know that now there are quite a few companies making them, some cheaper than others.

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Re: What is needed to swap a RB into a 240sx? *FAQ*

Postby Coolwhip » Tue Jul 09, 2013 10:13 am

Turb0wned wrote:Quick question. Now that a few years have pasted, what are the most recommended mounts for an RB25 swap into an S14? I know that now there are quite a few companies making them, some cheaper than others.
We still have alot of success running McKinney Mounts:

http://www.rawbrokerage.com/brands/McKi ... ports.html


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