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Hey all.

Going to have the rb25det head taken off, stripped, prep'd and redone

I'll have parts in a month all ready to go in.

Who should I see for all the work. - ? (Im sthn suburbs)

How much roughly would it cost. - ? either strip n fit, or extra port n polish

Not after high HP just high Torque with awesome auto awd midrange goodness.

whats involved in Head work??

so far have purchased:

Q45 90mm throttle body

Greddy Q45-RB25DET 90mm throttle body adapter set

Cometic intake manifold gasket

Cometic intake collector gasket

Cometic exhaust gasket

Cometic Head gasket 1.2mm x 87mm

ARP head stud kit

EPP 6mm Intake valve seals

EPP 6mm Exhaust valve seals

EPP Intake valve seats

EPP Exhaust valve seats

EPP Intake valve guides

EPP Exhaust valve guides

EPP clear cam gear timing belt cover

Tomei 8.8mm lift valve springs

Need to arrange:

Tomei 256/256 8.5mm poncams

Tomei oil gallery orifice

:D

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Rebuild with shortened bronze valve guides new stem seals, multiangle valve job (3 angle is done standard on the rb's), port and polish (noticeable work done around the bowl area) and valve deshroud cost me ~1.1k

I had it done by Chris Milton Engine developments but honestly I can't recommend them as they bum steered me a few times (valve seat pressure stuff ups etc) they then charged me again to fix up their stuff up.

Unsure if James from Nisspeed is still around. Might want to quiz Shaun.

I'll definately be talking to shaun soonish Cubes - waiting on attessa oring

madaz the cometic head gasket is Multi-Layer Steel.

MLS head gaskets are comprised of three layers of corrosive-resistent stainless steel. I'll have the slide highflow tuned for max efficiency (whatever that is, 16-18psi)

paid for the parts (bar poncams)

  • 1 month later...

thanks for the Link, Ive had a chat and got a quote.

Ive been quoted around $1200 to $1500 depending on how far I want to go with the porting job, from Lewis Engines in Mt Barker Sth Aus.

parts have cost me exaclty $3000 AUS, from Sliding Performance (best dealer on SAU, thanks guys), and Erics Performance Parts (USA Ebay, when the u$a-au$ dollar rate was almost equal)

so all up its a $4500 job, plus the retune and basic service stuff.

looking for big torque thru the auto and around an easy 230kw

have bought, and have got on hand, although I might swap the 1.2 x 87mm head gasket for 1.5 x 86mm, not sure.

for stock bottom end what should I use, 86 or 87mm? who else is good for head work in Adelaide? just wondering

Cometic intake manifold gasket

Cometic intake collector gasket

Cometic exhaust gasket

Cometic Head gasket 1.2mm x 87mm

ARP head stud kit

EPP 6mm viton Intake valve seals

EPP 6mm viton Exhaust valve seals

EPP Intake valve seats

EPP Exhaust valve seats

EPP Intake valve guides

EPP Exhaust valve guides

Q45 90mm throttle body

Greddy Q45-RB25 adapter kit

EPP clear cam gear timing belt cover

Tomei oil gallery restrictor orifice

Tomei hi-lift valve springs ~8.8mm

Tomei 256/256 pon cam shaft set

2x 700cc Sard injector external intake manifold setup

thats some list for 3thou, I reckon.

almost got venolia pistons and rods for $300 lol, but decided not to bid/buy at the last minute. lol. what coulda been ........ heheheh

wont do bottem end at this stage, top first. maybe pistons and rings in a few yrs time.

I had it done by Chris Milton Engine developments but honestly I can't recommend them as they bum steered me a few times (valve seat pressure stuff ups etc) they then charged me again to fix up their stuff up.

We'll have no slandering around here thank you very much :P

I can vouch for, James (not Jason :)) from Nisspeed. However, he is usually one very busy man.

For the cost of a decent set of pistons and rods these days, in all honesty, I'd be doing the lot now - while the head is off. If you don't have the extra $ then save a bit more and then do it.

If you want to make the most of the top end upgrades and have piece of mind with that additional torque, then at least do the pistons/rings etc. We all know that standard RB25DET ring-lands are like Amy Winehouse (sp?) they love the crack :sick:

just remember the rb ring lands are weak and that power level you can do the rings believe me ive just done mine at 200+rwkw but i think gazzanats helped that lol so make certain your tune is good

and its a very nice list ive got 1 too since the rings went its given me a excuse to go ahead with the 26/30 build up

Edited by R334door(s2)

too right pete dam safc and standard ecu dont mix

have a look at this run see how lean she is at low rpm :D and then hits r&r im not too fused but she was a good motor maybe i should whack another bottom end on it this. The other build up is not gonna give me much change from 30g ill tell yas all about it after. :P

pic of dyno graph

cheers for the replies

damn that dyno chart above, lol, nasty

yeah, happy with the list, cheers for the nice comments.

should have bought the venolia pistons and rings for $300 then, damn it. was thinking that pistons/rods (proper pricing, theres $1500) and a hone and bore would be three grand at least extra on top of the head work.

I figured I could do head work now, be happy with low-mid 200'kws, and in a few years time do the bottom end.

Ive got the toshi ecu remap chip, great, heaps rich LOL but timing is pretty good. safc is in bigtime negatives atm, so plenty of scope for the extra 700cc injectors to be switched on thru a rpm/wot switch for safe fueling.

Im hoping bottem end will be fine, but thanks for the tips, from your wealth of experience (whatsisname) I'll take it into consideration and see what I can do a deal on, perhaps. just I figured I didnt need to spend that extra 2-3g for bottom end rebuild, and have fun doing it in a few yrs time.

total list of car, for the past 3yrs ownership. all mods are mine.

*********

Car:

1997 Series 1 Nissan Stagea RS Four Station Wagon

100,150kms, Auto, RB25DET engine, Attessa 4wd

Silky Snow Pearl, Dayz bodykit

100,000km service (new water pump, belts, exhaust studs, fresh fluid such as p/steer, radiator, attessa, etc)

Engine:

Ryco Z201 fuel filter, Ryco Z145 oil filter, Castrol Edge 0/40w engine oil

Davies Craig automatic transmission oil cooler upgrade kit

MV Automatic shift kit & auto service kit

Koyo Radiator upgrade

Splitfire coil packs

NGK BCPRE6 0.8mm copper v-gruve spark plugs

Bosch 040 fuel pump with direct battery feed at 13.8volts

Aerospeed adjustable exhaust cam gear pulley wheel

Greddy remote oil filter relocation kit

Nismo adjustable fuel pressure regulator

Nissan Z32 Air Flow Meter

3inch Just Jap Racing stainless steel single dump pipe system (turbo to cat)

3inch Racing Technologies metalcat high flow catalytic converter

3inch cat-back exhaust system with Kakimoto GTR Racing hi-flow straight-thru muffler

Cold Air Induction aluminium box w/ lid setup, foam internals, using standard snorkel air feed

Cold Air Radiator air guide (feeds radiator / pod / intercooler)

Apexi Super Induction pod filter

Apexi 'Hybrid' front mount intercooler, tube & fin and bar & plate, with custom return air feed pipe kit

Apexi boost gauge

Apexi SAFC Super Air Fuel Computer

Apexi SITC Super Ignition Timing Computer

Apexi Profec B spec-ii dual stage Electronic Boost Controller, set to 1bar and 1.1bar

HKS heavy duty 14psi turbo actuator

Sliding Performance water/oil cooled 360degree journal bearing Hi-Flow Turbocharger

Rated 250rwkw at 1bar, 2yr old 10,000kms perfect condition. Easy stable 1.1bar

Toshi remapped ECU chip

Suspension:

Bilstein front and rear suspension shocks, with ‘lowering’ circlips, using standard springs

Whiteline front and rear adjustable swaybars

Dayz adjustable engine swaybar

Whiteline front castor kit

Whiteline rear subframe alignment kit

BJR Graphic 17” x 7.5” +40offset rims with Hankook K104 Ventus tyres, 235/45/17

Brakes:

Maltech stainless steel braided brake lines, Front and Rear

DBA slotted front brake discs

Benidx Advance front and Heavy Duty rear brake pads

Audio:

Clarion stereo tape unit with 6-stack cd player + usb-mp3 adapter

Clarion amp mounted to enclosure for Clarion 10inch subwoofer

Pioneer 260w 4-way front door speakers

Eclipse 80w 2-way rear door speakers

Razin volt stabiliser kit

Car alarm

Head Parts to Fit & Tune – Boostwerks:

Cometic intake manifold gasket

Cometic intake collector gasket

Cometic exhaust gasket

Cometic Head gasket 1.2mm x 87mm

ARP head stud kit

EPP 6mm viton Intake valve seals

EPP 6mm viton Exhaust valve seals

EPP Intake valve seats

EPP Exhaust valve seats

EPP Intake valve guides

EPP Exhaust valve guides

Q45 90mm throttle body

Greddy Q45-RB25 adapter kit

EPP clear cam gear timing belt cover

Tomei oil gallery restrictor orifice

Tomei hi-lift valve springs ~8.8mm

Tomei 256/256 poncam camshaft set

2x 700cc Sard injector external intake manifold setup

31-32psi, depending on the weather

lol

mobil 98 fuel, sometimes BP or Liberty or Shell 98

anything else?

teheheheheehehehehe

love my RB

oh edit: Shaun at Boostwerks is gettng me a price, for the total job

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