Rb25 Neo Silvia S15

[n_D]

Howdy,

Had this S15 for a couple of years. Car was my daily running around 200rwkw. In April this year the pressure plate exploded, destroying gearbox, bellhousing, starter motor, windscreen and ripped the flange off the back of the motor.

Was pretty upset at the time but took the opportunity to take it off the road and build something cool. Always wanted a rb Silvia, this is my chance, firewall was alreasy bashed from the explosion so it was a sign haha.

This is how it sat before I took it off the road.

Plan is to go a R34 Neo motor, E85 and a precision 6266 twin scroll.

[n_D]

Here is a picture of the pressure plate and the associated damage. Took off in first gear at full throttle, about 5,500rpm there was a massive bang followed by rattles and smoke etc... Shit sounded expensive lol

[n_D]

Then started the slow process of removing the old motor and all the stuff form the engine bay.

Filled the big holes with epoxy steel, then a metal reinforced filler, then a body filler.

Still needs one more layer of filler and a sand before I get the engine bay painted. Motors going in and out a bit atm so leaving engine bay bare.

Engine Acc. Loom was a major pain in the ass to remove. Had to pull the dash as the previous owner had wired in the alarm and headunit etc... with no thought put into it.

Edited December 20, 2013 by n_D

[n_D]

MORE BOG!

[n_D]

Scored a R34 GT-T brake setup for a steal $450 front and rear with hubs, knuckles, calipers, pads and rotors etc...

Got some RDA drilled and slotted rotors, still havent decided on pads. Will wait till car is closer to completion.

Straight swap, hand brake cables pretty much line up like the S15 cables.

Just had to get front hubs drilled out to 14mm. Got a race car builder to do this as I've heard its a major pain in the ass without proper drilling equipment,

Edited December 20, 2013 by n_D

[n_D]

Found a R32 Cross member to mount the motor.

Seen better days, looks like someone oxyd a bolt out of it. Did not notice it until I got home.

Got it fixed with a new washer tig welded in the existing hole. Then took a wire drill bit, went to town on it and gave it a paint.

[n_D]

Found a good motor. Came out of a 4 door automatic, 80,000kms never boosted. And a MINT R33 box to go behind it.

[n_D]

I rebuilt the top end with a full Nissan gasket kit, water pump, ARP studs etc..

Replaced timing belt and tensioners etc.. with a Gates Racing Kit, been advised to replace idler pulley bolt as they have snapped from using the tighter racing belt. Replaced the bolt just in case.

Got the head ground and chem cleaned

[n_D]

Fitted a RB30 oil filter stud so I can run my greddy relocation and cooler kit.

[n_D]

Just pics of all the goodies going in.

Precision 6266 ball bearing twin scroll 0.84a/r

Bosch 1200cc Injectors

Twin Tial 38mm Gates

Forward facing inlet plenum

Nismo engine and gearbox mounts

Powersteering cooler

Braided ABS-delete brake lines

Superpro Rack Bushes

Sard FPR

Walbro E85 460lph Pump

@Performance Tub Kit, w/catch can, rad overflow and powersteering tanks

[n_D]

Motor is in the car. I need to get either the subframe or brackets cut and shut to move the motor back. Definitely sits nice and low though.

If I can move the motor back about 30mm, I can fit thermofans on the radiator as pullers, use a pusher on the A/C Condensor and keep aircon

[n_D]

Coated the rear housing on the turbo, was quickly gathering ugly surface rust.

Scored a nice boot with a ducktail spoiler, needs some repairs and a spray but got it cheap

Few other random pics here.

Edited December 20, 2013 by n_D

[JH32]

Cool build! Have always thought an RB25 in an S15 would be a fun combo to do.

[timmy_89]

Nice thread, not sure if I missed it or not, but have you got a time frame in which you would like to have the car running again?

[mattlikewhoa]

I'll be following this build! It's going to be quite the fun ride once it's finished.

[Bushy]

Very tidy! Loving all the photos. I'm surprised how much damage was done when the pressure plate let go.

To move the engine back, slotting the engine mount bolt holes on the subframe may be an option?

[n_D]

I did consider slotting cross member but its not possible with the r32 xmember, can be done with the 33. Will be getting subframe modded when i send it off for exhaust and intercooler piping.

Hopefully have the car done march/april next year, fund after new years are low lol.

Bought most of the big expensive stuff, still need a clutch NPC quoted me about $1250 for a single plate organic that will hold 450rwkw with a billet flywheel.

Mate is spraying engine bay for free still gotta pay for the tubs to be fitted and the wiring.

Edited January 4, 2014 by n_D

[dftsilvia]

What intake mani is that? is it the one off ebay for the neo? its like 690 bucks

[n_D]

Its from rc-turbo.com think u can buy through eBay.

Cost me about $1100 with the throttle body. Solid welds, individual runners, flat surfaces etc can't see why it wouldn't perform like any other decent manifold .. couldn't justify money on a plazmaman/Greddy

[n_D]

clutch sorted. npc button clutch with a billet flywheel. should be good for 450kw atw