I've searched and I've searched. I've read threads that Google linked to on other sites (Hybridz, zcar, etc), but the posts were so poorly written, I am still in need of an answer! You guys here never let me down, so here's my question; I am building an L28 (F54/P90, N/A with dual SU) that I will be swapping into my '71 (12/70) 240Z. The F54 came from a 1981 280ZX Turbo. Will there be any clearance problems with the L28 turbo oil pan? If so, Can I simply use the oil pan from the 240Z on the F54? I plan on running ZStory headers and I think I've heard whispers that there may be interference issues with the L28 pan/heat shield?

What is the sage advice from all of you that have walked this path before me........

Edited November 16, 2025Nov 16 by astrohog

You can use a p30 oil pan on an f54 block.

I have a vague memory that the ZX pan works in a Z. But, since you have both why not measure to be sure?

How much "building" will you be doing on the turbo engine? You know that it has a lower CR than an NA engine, right?

1 minute ago, Zed Head said:

I have a vague memory that the ZX pan works in a Z. But, since you have both why not measure to be sure?

How much "building" will you be doing on the turbo engine? You know that it has a lower CR than an NA engine, right?

Yes. I've had the turbo motor sitting here for a decade, and the original plan was to go turbo, but I changed my mind and want to keep it N/A and make it what I might have done back in the day to hop it up for a, "somewhat period-correct street rod" that is clean and simple under the hood, with not a lot of spaghetti or that immediately looks like it has been modded. Of course, I want to keep it easily-returnable to its stock configuration and will be keeping the original, numbers-matching L24 and the rest of the original bits.

My plan is to bore to 89mm add flat-top pistons and new rods, L-Spec Datsun-worked head (shaved, ported, new springs, SS valves, valve guides, stage 2 or 3 cam and cam tower shims). I just purchased the A123 electronic ignition distributor, Champion radiator with fans and will be doing the GM alternator conversion, light flywheel, performance damper, turbo oil pump and keeping the dual SU's.

More than I bargained for, but I think I will end up with a really nice driver that will satisfy my butt dyno!

Sigh...

44 minutes ago, cgsheen1 said:

Sigh...

It's just snark if you don't follow it with something useful. Are you sighing the pan question or the build details?

1 hour ago, Zed Head said:

It's just snark if you don't follow it with something useful. Are you sighing the pan question or the build details?

I assumed he was mourning the loss of another turbo block to N/A..............

Turbo, Julio.

You can do just as well with that P90 head and flat tops on that F54 block. I know you've read this before but I'm gonna post it anyway.

https://datsunzgarage.us/engine/

Not a "snark" - just a sigh from a bona fide Turbo Swap and EFI Enthusiast... Always have been and never apologetic. And although I sigh, I never fault anyone else's decisions concerning their own vehicles. A comment is just a comment, everyone has their own opinion, and some have greater experience in a certain sphere than others.

8 hours ago, cgsheen1 said:

I never fault anyone else's decisions concerning their own vehicles.

Sigh...

Thanks for replying. From out here, the post reader, the sigh sure does look like a comment. Just couldn't tell what the comment was about.

Which ZStory header are you getting?