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Indy-Barely Functional-Guy
Indy-Barely Functional-Guy SuperDork
5/5/18 8:55 p.m.

I'd like an update please. This is awesome sauce.

JesTerI3
JesTerI3
8/27/18 12:09 p.m.

Noob here...

So I'm thinking of swapping my 350z engine into my 89 RX7. LOOOOONG story short, I have a useless 350z chassis with a fully functional engine and drivetrain. Then I have my RX7.... I want more power in the tiny car and better emissions... Mostly more power....I need to completely rebuild and rewire the rotary and came to the conclusion of doing a swap. Its cheaper to just swap versus rebuilding the entire engine since everything is on hand...

 

In your process of doing this have you came across any parts in production that can be used directly for this (or) slightly modified?

Or is everything straight from scratch?

wvumtnbkr
wvumtnbkr UltraDork
8/29/18 6:36 a.m.

I am curious if this ever got completed.

 

That is a tall engine.  I would take some measurements and see how much ground clearance you are okay with.

Most parts for this swap will need to be fabricated unless somebody recently came out with a kit.

Ethan
Ethan New Reader
10/1/18 9:15 p.m.

In reply to JesTerI3 :

The main problem with this swap is the oil pan being front sump on a VQ. An '02 pathfinder upper and lower oil pan will bolt on to convert it to rear sump, but it is a tall rear sump pan, as its from an SUV. Pretty much the whole VQ intake plenum sticks out of the engine bay, while the oil pan is 1" off the ground. So you have to modify the shape of the lower oil pan, or do a dry sump setup, which would be ideal. Last I checked the only dry sump kit for the VQ was by Dailey Engineering, and somewhere in the neighborhood of $6k. We will probably be fabricating our own, unless I win the lottery, or Dailey Engineering decides to send me one. Like wvumtnbkr said, engine and trans mounts will also have to be fab'd.

       Also, just for reference, my VQ measures about an inch from the back of the plenum to the firewall with nearly the whole engine sitting behind the front cross member and weighing 40lbs more than the rotary it replaced (I still like rotaries.) FCs are known for their perfect 50/50 weight distribution, and the first year hardtop (1986) was around 600lbs lighter than the 1987 and later models. By all accounts it should turn out to be a little ripper, even before any FI.

      I have recently heard of someone in Florida that completed this swap, but as far as im aware he modified or changed the FC's cross member (and rack?), instead of the VQ itself.

    As for its current state, it hasn't changed since the last update. Once again priorities have shifted away from the FC temporarily and unfortunately. On the plus side, it will never go anywhere. Im a radiator, driveshaft, and few other small odds and ends away from driving it, and still have yet to fire it. There is still a lot of parts needed before being able to track/race it (seats, dash, safety etc.) I haven't forgotten the build thread though, and the next update will be actual progress. Apologies for the delay.

The 6+ year build continues...

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