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5thgenluder

1971 240z rb25det build thread

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jakeoster    14

GeeMan, all the info you need to do the swap is on this forum.

 

You just need to decide if this is what you want (there's plenty of YouTube videos of rb25 performance). Also you must consider if you are able to finance the swap.

 

5th gen-

 

The N1 water pump was designed for a street driven R34 N1 spec GTR. I would have to believe that Nissan would not include a pump that would overheat the car in normal use as this is a street car. In my opinion get what you want. Honestly, I think the negative is heresy that the Internet has talked up.

 

Haha sorry, just figured it was time to put that out there.

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GTZ    0

GeeMan, all the info you need to do the swap is on this forum.

 

You just need to decide if this is what you want (there's plenty of YouTube videos of rb25 performance). Also you must consider if you are able to finance the swap.

 

5th gen-

 

The N1 water pump was designed for a street driven R34 N1 spec GTR. I would have to believe that Nissan would not include a pump that would overheat the car in normal use as this is a street car. In my opinion get what you want. Honestly, I think the negative is heresy that the Internet has talked up.

 

Haha sorry, just figured it was time to put that out there.

 

 

jakeoster I agree with you about the N1 oil and water pump. I'm running N1 oil and water pump on my car and have no complains. The ones I took off were N1 as well. All of nissans N1 products are better than the oem stuff.

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GTZ    0

Guys help me out here. I am trying to compile all the missing items for my car.

 

I have the following.

1. motor mounts

2. drive shaft

3. exhaust

4. intercooler

5. radiator with fan

6. greddy style intake manifold

 

I have on my list.

1. rb25det timing kit.

2. greddy type rs blow off valve

 

I think I may need.

1. new water pump. ( maybe N1)

2. boost contoller ( maybe greddy profec b )

3. zeitronix zt2 wideband.

 

What am I missing? What else do I need or not need?

 

 

http://forums.hybridz.org/index.php/topic/97559-74-260z-rb25det/

I have made some what of a list on my posting of things I used and it might give you some idea. Unfortunately I didn't really document my build from the beginning but have learnt a lot from it.

If you will retain your stock ecu and stuff for a while than don't waste your money on a greddy or any other BOV at this time. My motor has a MAP and TPS based tuning in which case I run a turboxs rfl bov vented to the atmosphere. If you run a MAF you will have to recirculate it back in the intake as its measured air like the stock setup. When you get to the point of upgrading your motor and see what direction you are head it than you can choose the correct bov for your setup.

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5thgenluder    0

Gtz. I have been following your thread. Lots of good info. Thanks Jake and gts for the heads up on the n1. I really want to get moving on this but I haven't had a day above 20 degrees since October and we are gonna get 20 inches of snow in the next 3 days. Damn this Chicago weather.

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GeeMan    0

Jakeoster, yeah I kinda made a small mistake for buying the engine without looking at what I need first. Finance isn't the problem just need a good direction to head first. The engine is out. Took it out last night. I want to know what I can still use from the Z that can be used for the RB. I just want the basics to get this motor running. Any help is very very appreciative. Thanks guys.

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wow this is really thorough, im actually considering a 240z that is just down the road from my house for $500, but the guy said that the floor boards were rusted out, is it worth it? im going today to look at the extent of rust on the car. so PLEASE let me know soon lol

 

 

thanks

 

ps sorry about your dad :(

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250z    0

First of all my condolences to you and you family

 

I have just read this entire thread, you are doing a superb detailed job! thank you for being so thorough and for posting links.I dont have a Z yet just currently doing as much hw as I can. This is the swap I plan on doing, keep up the good work, looking forward to the completion of this build.

Edited by 250z

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5thgenluder    0

The weather around here is finally starting to break. We have had a few days above 35 degrees this week. Im gonna get started on the car again. I hooked up one of the gauges. The cobalt blue looks great. Pictures up when I get my camera back. Just curious if anyone has a link to prepping an rb25det. So far I plan to change the water pump and the timing kit. Is there anything else I should do?

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5thgenluder    0

Dash isnt looking so good. When I removed the dash cap it was worse under there than I thought.

post-11227-000419700 1299554859_thumb.jpg

To make mattters worse when I removed the dash foam from the metal frame it broke in the center over the 3 humps. Im gonna give it a little bit of work and see what I can do but I'll probably just do an alluminum dash.

post-11227-070468400 1299555018_thumb.jpg

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5thgenluder    0

Update:

 

Worked on the dash a little more. The good news is it is one piece again. I used some wood to screw it back into place. The I used 60 second adhesive that I got from autozone. I glued it in a few spots underneath to get it to stay in place. Now Im in the process of rebuilding it. I am following the cheap dash repair alternative thread. So far I have filled some of the gaps with great stuff and sanded it down. It worked better than I had expected. I got my camera back and took some pics.

 

post-11227-036775900 1299729867_thumb.jpg

post-11227-053782900 1299729881_thumb.jpg

post-11227-008982200 1299729892_thumb.jpg

post-11227-033753300 1299729903_thumb.jpg

 

So now I have to find some SEM Bumper repair. I plan to fiberglass the entire dash and make mounting and servicing my gauges easier.

More Later.

Edited by 5thgenluder

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JSM    15

1. Run standard "Paint" program installed on all Windows based PC's.

2. Open the picture you want to modify.

3. From Menu bar, Select Image => Resize/Skew

4. You should be able to go down to 50% or more on both Vertical and Horizontal under the Resize section

Edited by JSM

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5thgenluder    0

update

 

Ok still working on the dash. Got a little work done today. Like I said in an earlier post I want a better gauge solution with a good fit and finish. This meant eliminating the cups I was using before and eliminating the gaps that I get above and below the dash when mounted at the preffered depth. Here is the beginning of my solution.

 

1st I screwed a board behind the gauges to give me a flat surface. Then I screwed 3 spray paint caps to the board. Then I filled all the gaps with great stuff.

post-11227-037892800 1300424823_thumb.jpg

Here is the back.

post-11227-074603500 1300424866_thumb.jpg

post-11227-074603500 1300424866_thumb.jpg

Then I began sanding them to the appropriate size.

post-11227-087356500 1300424804_thumb.jpg

More

post-11227-050000300 1300424923_thumb.jpg

Here is the back.

post-11227-004083900 1300424956_thumb.jpg

I plan to mount the gauges by securing my gauge plates to the new foam. Like shown.

post-11227-005397300 1300425029_thumb.jpg

I need to sand it all back a bit because its way to deep. Then Im gonna sand it out about 1/4 inch so the fiberglass doesnt make it too big for the gauge to fit.

 

Let me know what you guys think. I havent heard from you guys in a while and some encouragement would help keep me motivated. :)

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240zdan    25

what exactly are you trying to do with the dash there?

 

I have two dashes in storage both are way better condition than that one, i could sell them for cheap if u want. yours is pretty much a write off and the fiberglass will be a PITA to finish off nicely dont you think? Unless you plan on heavily coating it with some sort of gelcoat to smooth it out but even that i can see it being messy wth lots of sanding...

Did you ever consider wrapping the dash with suede? That would hide alot of flaws and give you a racey look...

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