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Preperation For Rb25 Rebuild

rad100

By rad100,
in Engines & Forced Induction

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rad100 Grand Master

rad100

Posted
Posted (edited)

hey all..

im planing on rebuilding my rb25det to forged internals..

the car see's track time every now and then. so want something that can handle revs etc etc.

i have read throught Nytsky's build thread and also looked at spools website and a couple of others..

now what im not sure on is what parts i need to gather before i send them and the engine off to get built..

i know pistons, rods, bolts, gaskets...

im looking at spool or nitto rods, cp pistons, genuine gasket kit, arp bolts ..

are these good? what else would i need to see my engine to be reliable at the track..

i want to have the rear oil drian.

also looking at the nitto oil pump item..

any work should be done to the head?

should i use nissan bearings or other?

and around the 350rwkw mark and possilbe e85..

and to take some revs :)

i have atm ready to go on, plazmaman plenum, tomei poncams, splitfires, gt3076 .82 with ext gate, nistune ecu, z32, rb26 rocker covers and mines cam baffles, cam gears..

any further info/advice would be good..

Edited by rad32
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rad100 Grand Master

rad100

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  • Author
Posted (edited)

was also thinking of doing what my mate did..

specs:

Fully balanced

Arp main studs

Arp head studs

Acl bearings

Acl 1.2mm head gasket

Ross/acl pistons

Argo rods

Adj cam gears

its really all the small stuff like oil restrictors, head porting, harmonic balancers etc..

just want it all safe for the track.

Edited by rad32
TiTAN Grand Master

TiTAN

Posted
Posted

ATI or Ross harmonic balancer

Larger sump

Oil feed restrictors x2

Extended oil pump drive

New water pump

If you haven't already you should look into larger radiators and oil coolers for reliability on the track.

that being said if the current engine still works why fix what isnt broken.

rad100 Grand Master

rad100

Posted
  • Author
Posted

yeh i have oil cooler and relo kit and aloy rad..

engine is fine but im looking at slowly starting a collection of parts so when i does come time for a rebuild i have everything here and instead of paying 10k at once ill only have to pay for labour..

N1GTR Grand Master

N1GTR

Posted
Posted

If you aren't sure about e85 yet don't buy injectors.

Once you decide what fuel to use, buy them then.

For everything else if you do a search around you'll see it's pretty much all been covered before.

NYTSKY's list would be a good place to start

rad100 Grand Master

rad100

Posted
  • Author
Posted

yeah i have 740cc already...

and yeh his list is good but he wasnt tracking the car from what i could see..

so if there is anything else i would need ontop of his to help with a track scenario..

rad100 Grand Master

rad100

Posted
  • Author
Posted

so my mates engine i posted up, from what i read all i would need to change would be the pistons and rods to a stronger unit for higher revs and add a blancer, sump and oil restrictors..

sound about right?

FineLine Grand Master

FineLine

Posted
Posted

From my experience you will be pushing shit uphill with that turbo to make that sort of grunt.

Make sure you use good valve springs, Port match everything in your airflow system from the throttle body to the dump.

Balance every rotating part to within an inch of its life. oversize exhaust valves and a decent valve cut.

GL with it mate.

Red R Racing Apprentice

Red R Racing

Posted
Posted (edited)
From my experience you will be pushing shit uphill with that turbo to make that sort of grunt.

Make sure you use good valve springs, Port match everything in your airflow system from the throttle body to the dump.

Balance every rotating part to within an inch of its life. oversize exhaust valves and a decent valve cut.

GL with it mate.

Red R are building it Noel, they have already built a couple of RB25's recently that have made this power with that turbocharger on E85 or race fuel.

One of them saw over 3 bar of boost for two laps due to a blown off wastegate hose which would have also ran it very lean and the owner admits to "giving it an absolute caning" with no engine trouble at all.

Im sure it will be quite well built. :cheers: Paul does not cut any corners as he, being a drag racer, is still not aware what a corner even is.

Edited by Red R Racing

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