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Chipndip's RB25DET S30 build


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Hey everyone,

My names Chris, I acquired a 1976 280z just over a year ago. The motor was in tired shape, it had a cam on it but all the valves were bent. I swapped the head for a stock cam and wired up a megasquirt system. It ran alright but it never made tons of power. I saw that a few people were putting RB's into z's and thought that would be a cool swap. Keeps it in the family. After building a whole new l28 to have the head gasket go, it was the final straw. I would start in swapping the RB despite the cost and time. I've created this thread to document progress.

 

Here she is when I picked her up from the PO.

As you can see it has the MSA bodykit on it.

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Update 1 - More pics!!

 

So a bit of a background, I picked up a motor from JDM engine depot down in NJ. The motor I received failed a leakdown test. Initially diagnosed it as a head gasket but upon further tear down it had 5 leaking valves. They said the warranty was only intact if the head was on. To me it was worth a rebuild as you never know what the engine went through in its past life in Japan.

 

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Here are some pics from the machine shop

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The new engine will contain the following

King main + rod bearings

Cometic headgasket

CP pistons

Manley Rods

ARP headstuds

ARP mainstuds

ARP rod bolts

N1 oil pump

HKS fine tune belt

new tensioner + pulley

new water pump

 

I also ordered my oil pan from PAT1 and patiently waiting for it to come in. I've heard really good things about him. I went for the whole new oil pan option.

 

I kinda cheaped out on my motor mounts and went with the CXracing kit.

They aren't as bad as I expected. I'm unsure if I will run it for long after the install.

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While waiting for the engine to come back, I decided to mount the transmission. It fit really nice without any cutting needed.

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Next up was the fuel system. Although it is a 280z with fuel injection, I may want to run more power down the line. This is my rigged up system. It is an aem 380lph external with -06AN supply and return lines all the way. I used a aeromotive fuel pressure regulator you can see mounted on the firewall. I modified the original fuel pump mount. I cut and rewelded the end as to provide a little bit of protection for the lines. There is no 220v line in my garage so any welding past flux core can't be done. I am hoping to move into a shop in the near future.

 

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Edited by chipndip829
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