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sr20 -> cefiro what parts needed?

sky80

By sky80,
in Four Door Family & Wagoneers

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sky80 Rising Star

sky80

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sorry to go off topic but dont you have an rb26??

yep, i do, but since i cant afford to keep the car if i dont get some money some how, i've decided that maybe i should sell the 26 as a full rwd conversion kit to some one, and buy a cheaper engine to put in, that way i can still live for a few months before having to look for a job...

how much you guys reckon i can get for a complete rb26 engine with turbos, harness, power fc, gearbox, cross member, plenum, injectors...all that shit...

too_much_boost Mentor

too_much_boost

Posted
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Meggala gets a workshop to do all his work. You are better off with someone who did the conversion themselves.

There are 3 SR cefiros in Sydney that I know. You should check them out. You are welcome to come check my conversion out and have a chat about it. PM me if you like

someonestolecc Grand Master

someonestolecc

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The workshop who did my car didn't exactly to a good job either sky80 so you wanna stay away from them, whoever they were. Listen to too_much he does good work, if you need to look at my car you're welcome to check it out also.

BHDave commented on my gearbox mounts being good so you may like to copy that but that's pretty much it.

too_much if you wouldn't mind would you please keep it in the thread so others (like me) can look at it? and so I can (with permission) use it on my website? :)

too_much_boost Mentor

too_much_boost

Posted
Posted

The conversion from stock RB20det manual to SR20DET manual in a cefiro is pretty straight forward. I'll run through what I did to make it all work

For starters, You need to pull the old lump out. I did this with the engine and gearbox still bolted together. This is always the easiest way to pull a driveline out. This is all pretty straight forward.

Remove all the cooler/intake piping

Take out the radiator

Disconnect the wiring loom from under the dash and pull it though to the engine bay

Disconnect the fuel lines, and throttle cable and any other bits that attached the engine to the chassis.

Unbolt the engine mounts

Lift

IMGP0151.JPG

While the engine was out, i gave the engine bay a scrub with a scrubbing brush and scourer and degreaser to get rid of the toxic RB stink through my engine bay.

IMGP0152.JPG

The SR engine mounts will not line up with RB crossmember, so I used an S15 crossmember (which bolts in with no mods), complete with S15 steering rack (although an S13 one will work just as well). I used S13 steering arms as the S15 ones were too long. The standard lower control arms remained in place.

IMGP0154.JPG

I bolted on the flywheel, button clutch and gearbox while the engine was out of the car, also put the stainless manifold and S15 turbo on while it was still out. The more you can do on the engine before you install it, the easier things will be. I also fitted the mount on the engine for my oil cooler kit.

I put the engine and box in while bolted together. There is ample room to do this. The engine mounts lined up fine. I was lucky to find that the standard RB20 tailshaft was the exact right length for my driveline, and had the same output shaft splines.

We had to modify the SR gearbox crossmemder, which took about half hour. The mounting holes needed to be elongated by about 8-10mm, and part of the lip needed to be ground off. This doesn't have much effect on the strength of the crossmember.

I used a stock S13 radiator, which fitted the standard bottom mounting holes quite nicely. I did have to make custom top mounts out of thin aluminium that i bent to shape.

IMGP0160.JPG

I made up a mild steel intake pipe and set about welding up some intercooler pipes for my fmic. Having a tig welder handy makes life easy. Also fitted a cusco catch can and plumbed it in

IMG_0638.JPG

IMGP0164.JPG

There is some wiring trickery involved, but i wont go into that here as i can't remember the exact details. You just need to have a SR20 wiring diagram/pinout handy, and the same for the RB, then match things up

The rest is just tidying stuff up. You will need a wheel alignment if you changed the steering rack. You will find the tacho will be out, so I got an aftermarket Pivot tacho.

I made my own front pipe and 3in cat back as there was nothing readily available

The finished product

IMGP0183.JPG

Since then i have fitted a few more things to make it faster and handle better

Sorry about being so longwinded, but you did ask! :)

sky80 Rising Star

sky80

Posted
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Posted

dude...you're a legend...some one pin this thread :)

there's so much space in there, V mount :D

too_much_boost thank you very much...the longer the wind, the better it is :) wanna come around and gimme some pointers when i get back from o/s? ;)

so s15 steering arms are too long, is that the arm that come from the steering wheel? or is it the radius rods?

too_much_boost Mentor

too_much_boost

Posted
Posted

I reckon now that i've done it once, i could do a drive-in, drive-out conversion in a weekend. The stuff that takes time is making the exhaust and FMIC piping.

The steering arms are the bit that goes from the steering rack to the tie-rod ends

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