Building an RB25DET 240z!

Z car, 210, 510, 521, 621,721 pickups and any thing in between.

Moderators: notoptoy, S Allen, Solex68

User avatar
Alvin
Roadster Nut-Site Supporter
Posts: 8381
Joined: Tue Jan 23, 2007 7:01 pm

Building an RB25DET 240z!

Post by Alvin »

I wanted to share this build with you guys.
I'm building a replica of a friend's 1971 Datsun 240z with an RB25DET drivetrain swap.
Image
Image
This build will be similar to one I did a few years ago: Porsche 993TT brakes, Recaro seats, roll bar, Watts for Panasports, solder for mandrel exhaust, etc.
I am using the Hasegawa 240z kit body/chassis. The paint is GoGreen. I have some BOVs, and turbos, fmic's to play with, but I hope that the "top-Half" engine looks convincing. LHD is from the Fujimi kit.
Image
My goal is to replicate most everything visible in the engine bay

I cut the hood and I figured out how to mount the turbo and clock the outlet:
Image

Next, 1:1 has a Greddy intake manifold with a larger MAF.
I used a RB26 manifold, smoothed it cut off the piping.
made some runners from an old 240z exhaust manifold since they are squared off.
Injectors are from an SR kit
I'll fashion the maf from the charcoal canister/emissions thingy from a 280zx kit.
Image

Added the "Greddy" casting for the emblem:
Image
Image
After some sanding/painting:
Image

I shot the Testors "Go Green" on the valve cover/ engine bay followed by clear and I am pleased with the result:
Image

Added some pulleys for the water/crank/alt. The front cover was modified from an RB20 to look the RB25, including "hump"

Image

With the body on:
Image

Finished the Interstate battery/mounting j-bolts, just need to wire it. Mocked up the intake manifold, need to modify the throttle body as it's too close to the fender. More updates to come!
Image
Alvin Gogineni
San Jose, CA
1967.5 SPL/SR20
1997 Acura Integra GS-R
2022 Chevy Bolt EUV
zcarblog.com
Instagram
YouTube
My SR20 Build Thread
User avatar
windy311
Roadster Fanatic-Site Supporter
Posts: 527
Joined: Sun Aug 01, 2004 6:49 am
Location: NSW Australia
Model: 1500/1600
Year: Low Windshield-64-67.5

Re: Building an RB25DET 240z!

Post by windy311 »

That looks realy detailed and you know he will want that when you done.
1964 1500 H20 powered 5 speed
1965 1600
Rob.
roadsterfan

Re: Building an RB25DET 240z!

Post by roadsterfan »

Alvin,
You are truly, one amazing craftsman. Not only do you build these incredible models but the photography is just as amazing and professional!
User avatar
spl310
Roadster Guru
Posts: 13241
Joined: Sun Dec 29, 2002 10:38 pm
Location: In front of this keyboard... in Jacksonville, Florida!

Re: Building an RB25DET 240z!

Post by spl310 »

Nice!
"Wow, a Roadster!" Stuart Little

1967.5 2000
1967.5 2000
1964 1500
1964 1500
1967.5 1600
1968 chassis
2006 Acura MDX
2013 Volkswagen Jetta TDI wagon
1995 F350 Powerstroke!
More...
User avatar
DnCrs13
Roadster Fanatic
Posts: 432
Joined: Tue May 27, 2008 10:24 am
Location: Madison Wisconsin
Contact:

Re: Building an RB25DET 240z!

Post by DnCrs13 »

Alvin,

That looks amazing. I have been building models since I was about 5 or 6. Mostly glue bombs for the first 10 years or so, but I have gotten a lot better. I have done some mild customs, but nothing to that degree. It made my day to see that others are still building models. Unfortunately, since I got my 1:1, my 1:24s have gone to the wayside. I do have a couple of datsun kits built and a roadster kit or two waiting patiently.

Keep us posted on your progress!
Dan
'64 Impala Sedan
'68 1600
'08 Legacy Spec B.
'12 G25X
'18 Volkswagen Golf Alltrack
Dairyland Datsuns
User avatar
Alvin
Roadster Nut-Site Supporter
Posts: 8381
Joined: Tue Jan 23, 2007 7:01 pm

Re: Building an RB25DET 240z!

Post by Alvin »

Thanks for following!
I added the brake and clutch m/c's and plumbed them. The booster has a hole drilled so I can route the vacuum hose into the intake manifold later.
I will add a little flurescent highlighter to the reservoir caps to make them looked zinc'd, like the 1:1
Image
Alvin Gogineni
San Jose, CA
1967.5 SPL/SR20
1997 Acura Integra GS-R
2022 Chevy Bolt EUV
zcarblog.com
Instagram
YouTube
My SR20 Build Thread
User avatar
Alvin
Roadster Nut-Site Supporter
Posts: 8381
Joined: Tue Jan 23, 2007 7:01 pm

Re: Building an RB25DET 240z!

Post by Alvin »

finished the battery!
I'm proud of the little grounding wire off the negative terminal cable:lol:
Image
Image

reference:
Image
Alvin Gogineni
San Jose, CA
1967.5 SPL/SR20
1997 Acura Integra GS-R
2022 Chevy Bolt EUV
zcarblog.com
Instagram
YouTube
My SR20 Build Thread
User avatar
Alvin
Roadster Nut-Site Supporter
Posts: 8381
Joined: Tue Jan 23, 2007 7:01 pm

Re: Building an RB25DET 240z!

Post by Alvin »

did some work on the turbo.
Mounted/clocked turbine to compressor, added the coolant line:
Image
Then I made a downpipe out of solder, painted it black(coated) and tried to simulate the welding onto the compressor flange:
Image
Finally, I added a little detail I think Rob will be happy with, the wastegate plumbing!
Image
Image
Alvin Gogineni
San Jose, CA
1967.5 SPL/SR20
1997 Acura Integra GS-R
2022 Chevy Bolt EUV
zcarblog.com
Instagram
YouTube
My SR20 Build Thread
User avatar
Alvin
Roadster Nut-Site Supporter
Posts: 8381
Joined: Tue Jan 23, 2007 7:01 pm

Re: Building an RB25DET 240z!

Post by Alvin »

I started working on the intake/FMIC plumbing. Added a radiator fan and intake on the turbo. Tried different beds on the hotpipe and cold pipe to the throttle body, tricky to make things route through the radiator supports!

Image
Image

Image

I added the BOV on the intake side and a little hose on it. Put hose clamps on the rubber connector
I think I will re-do the air filter to be smaller and look like a K&N
Image
Image
Alvin Gogineni
San Jose, CA
1967.5 SPL/SR20
1997 Acura Integra GS-R
2022 Chevy Bolt EUV
zcarblog.com
Instagram
YouTube
My SR20 Build Thread
User avatar
dbrick
Roadster Fanatic-Site Supporter
Posts: 10084
Joined: Thu Sep 09, 2004 11:05 pm
Location: Kenilworth, New Jersey

Re: Building an RB25DET 240z!

Post by dbrick »

Somehow, I think building the actual car would be easier. Phenomenal work, I don't have a fraction of the patience (or attention span) required.

Dave Brisco

Take my advice, I'm not using it"

66 2000 The Bobster
64 1500 in pieces for sale
1980 Fiat X1/9
2009 Volvo C-70
08 Expedition EL, STUPID huge but comfy
1962 Thompson Sea Lancer, possible money pit
sleepyzzz
Roadster Fanatic-Site Supporter
Posts: 687
Joined: Sat Aug 30, 2008 5:43 am
Location: Harrison, AR

Re: Building an RB25DET 240z!

Post by sleepyzzz »

dbrick wrote:Somehow, I think building the actual car would be easier. Phenomenal work, I don't have a fraction of the patience (or attention span) required.


me either Dave, but that is truely amazing!!!!!!!! very nice work, Alvin.
1967 SPL1600 sold
2015 Nissan Rogue
2015 Altima

http://i32.photobucket.com/albums/d29/sleepyzzz56/roadster/IMG_0252-1-1.jpg
User avatar
Skyman
Roadster Fanatic-Site Supporter
Posts: 2397
Joined: Thu Dec 15, 2005 6:49 pm
Location: Salt Lake City, Utah

Re: Building an RB25DET 240z!

Post by Skyman »

And I thought you needed to have small hands to work on roadsters. Wow.

Kyle
67.5 SRL311-00060
67.5 SPL311-14241
2004 Porsche 911 Turbo
2003 Ford Powerstroke; Piped & Chipped
User avatar
Alvin
Roadster Nut-Site Supporter
Posts: 8381
Joined: Tue Jan 23, 2007 7:01 pm

Re: Building an RB25DET 240z!

Post by Alvin »

thanks guys!
Check this out I added the hot pipe, with welds, a heat sheild for the air filter, vacuum line for the BOV off the wastegate, and upper radiator hose with clamps:
Image
Image

There is a hidden catch can for the radiator(just like on my roadster!), I will make that and start wiring the 6 injectors/fuel rail...stay tuned!
Alvin Gogineni
San Jose, CA
1967.5 SPL/SR20
1997 Acura Integra GS-R
2022 Chevy Bolt EUV
zcarblog.com
Instagram
YouTube
My SR20 Build Thread
User avatar
Alvin
Roadster Nut-Site Supporter
Posts: 8381
Joined: Tue Jan 23, 2007 7:01 pm

Re: Building an RB25DET 240z!

Post by Alvin »

An Australian Zcar source recently did a write-up on Rob'z, and featured my YouTube videos!
http://www.viczcar.com/member-rides/rob ... atsun-240z" onclick="window.open(this.href);return false;
Alvin Gogineni
San Jose, CA
1967.5 SPL/SR20
1997 Acura Integra GS-R
2022 Chevy Bolt EUV
zcarblog.com
Instagram
YouTube
My SR20 Build Thread
User avatar
Alvin
Roadster Nut-Site Supporter
Posts: 8381
Joined: Tue Jan 23, 2007 7:01 pm

Re: Building an RB25DET 240z!

Post by Alvin »

I tried to make simplified fuel injector wiring/plumbing

Image

-wired each injector,
-made a fuel inlet line and return line
-also added the brake booster vacuum to the intake manifold
Image
Image
Alvin Gogineni
San Jose, CA
1967.5 SPL/SR20
1997 Acura Integra GS-R
2022 Chevy Bolt EUV
zcarblog.com
Instagram
YouTube
My SR20 Build Thread
Post Reply