My 26/30 Build

[huddy]

Hey Everyone,

I'm in the 'slow' process of collecting parts to get my RB26/30 build underway - End result will be to achieve around 300rwkw with a lot of response (rev limited to around 7200-7500)

Items already purchased:

RB26 Head - complete with covers

RB26 std inlet plenum

RB26 std 6 throttles

GT3076r - 0.82 external gate

TIAL 38mm external gate (14psi spring)

6 Boost manifold

Now i'm looking at buying these bits as i go - just hoping people can speak from experience and point me in the right direction for what is good value, where to get it from for the best price - The build isn't supposed to be all out, just would like to keep it reliable

Items to be purchased:

RB30 block (series 2 - as means oil drains already in block?)

Forged pistons & rings

Rods

Oil pump

Metal Head gasket

Arp rod bolt kit

ARP main stud kit

ARP head stud kit

ACL Bearings

Water pump

Harmonic balancer (std?)

Modified sump – rb30

Custom oil drain & oil restrictors (or is this mainly to suit RB25?)

Crank collar

All other machining etc to suit - completed by Nisspeed here in SA.

Here are a couple of pics of parts obtained already,

cheers

-Matt

[huddy]

Damn this no edit function...

Also:

Adjustable Cam Gears.

Also what timing belts are people using? Do RB26 ones fit or is it RB30 due to the height difference? (Will a NISMO belt suit?)

[unique1]

for your power goals i think the engine is abit overkill, forgies etc are not really needed, just freshen up the stock block and it should run 300kw pretty easily, and head studs etc not needed either.

The common belt everyone seems to use is the Dayco 94407, its about $35 or so, i reckon spending $100+ on other belts isnt needed.

If you plan on upgrading turbo later than think about forgies etc but with the 3076r i personally wouldnt bother. my motor i recently did i wish i went straight for the gt3582, the 3076 just doesnt have that throw ya back in the seat feel i was hoping for.

just my 2c worth

Edited February 10, 2009 by unique1

[Al]

If he plans to use the car like his avatar then he needs a very strong engine. If you have the money no need to skimp on reliability.

I love the gt3076r on my rb30det, it's freaken awesome, power and torque throughout the whole rev range!

My only concern about your setup is the 38mm ext gate. You my get boost creep, I would have gone for at least a 45mm gate.

[Pattygtst]

yeah agreed larger external gate for sure.

[huddy]

Hey cheers guys - building it to be as 'reliable' as possible - mainly for drift, but also something i can just have fun in. Wanting to do some grip/hillclimb/drag aswell.

Initially i went for the turbosmart 38mm, but I spoke with Simon at morpowa (has a 2jz with 6boost manifold, 38mm tial, gt3582 no boost issues) and he also spoke with Kyle (i think thats his name) from 6boost and came to the conclusion that if i change to the TIAL 38mm i should have no probs.

I know you always hunger for more, but this is the route i'm going atm.

Here's a pic of the car before my old TOMEI 2.4 was removed and the car was stripped getting ready for CAMS cage.

...So who can tell me where to buy stuff

[Pattygtst]

have a read through this thread, be a pain to have to go through the same thing

http://www.skylinesaustralia.com/forums/Hu...reep&st=120

[shanef]

Hey Everyone,

I'm in the 'slow' process of collecting parts to get my RB26/30 build underway - End result will be to achieve around 300rwkw with a lot of response (rev limited to around 7200-7500)

Items already purchased:

RB26 Head - complete with covers

RB26 std inlet plenum

RB26 std 6 throttles

GT3076r - 0.82 external gate

TIAL 38mm external gate (14psi spring)

6 Boost manifold

Now i'm looking at buying these bits as i go - just hoping people can speak from experience and point me in the right direction for what is good value, where to get it from for the best price - The build isn't supposed to be all out, just would like to keep it reliable

Items to be purchased:

RB30 block (series 2 - as means oil drains already in block?)

Forged pistons & rings

Rods

Oil pump

Metal Head gasket

Arp rod bolt kit

ARP main stud kit

ARP head stud kit

ACL Bearings

Water pump

Harmonic balancer (std?)

Modified sump – rb30

Custom oil drain & oil restrictors (or is this mainly to suit RB25?)

Crank collar

All other machining etc to suit - completed by Nisspeed here in SA.

Here are a couple of pics of parts obtained already,

cheers

-Matt

RB30 block - Every single rb30 i've personally seen (which is about 15 to date) has had the bungs for all the oil/water lines

Forged pistons & rings - Mahle pistons from USA or get the rod & cp piston combo from spoolimports, if u use the cp pistons get a set of acl oil rings to suit

Rods - Spool rods

Oil pump - i'd personally put a tomei on it, or better yet an external. ur going to be ringing its neck, lets not hide that fact lol

Metal Head gasket - acl gasket kit will surfice

Arp rod bolt kit - comes with the spool rods

ARP main stud kit - required for ur application

ARP head stud kit - required for ur applicaton (u'd be after RB25 headstuds)

ACL Bearings - yep their good

Water pump - genuine nissan

Harmonic balancer (std?) - atleast a ross balancer, ati if ur going to run an external oil pump

Modified sump - something with extra capactiy, gates & baffling

Custom oil drain & oil restrictors (or is this mainly to suit RB25?) - -10 drain from back of head, oil restrictors

Crank collar - proengines do them

id also put some poncams and springs in it with adjustable gears

hope that helps

[huddy]

Thanks for your help

That spool site is good - i've flicked an email off to him so thanks for that.

Why is it RB25 head studs are required? same as 26?

With the custom oil drain is it like this?

http://www.spoolimports.com/content/SPOOLR...OilDrainKit.asp

are these the oil restrictors? http://www.lewisengines.com.au/prod79.htm

how do they work?

Also looking into Moroso oil accumulator

Edited February 11, 2009 by huddy

[raps86]

the rb25 head studs will screw into the 30 block but the 26 studs are bigger and would need drilling and tapping the new thread. just make sure u have both the head guides before u fit the head gasket and head so the head wont move around.

[Bliksem]

Also looking into Moroso oil accumulator

Been PM'ing DAS KAMU about these too, interested in a group buy?

[jangles]

Thanks for your help

That spool site is good - i've flicked an email off to him so thanks for that.

Why is it RB25 head studs are required? same as 26?

With the custom oil drain is it like this?

http://www.spoolimports.com/content/SPOOLR...OilDrainKit.asp

are these the oil restrictors? http://www.lewisengines.com.au/prod79.htm

how do they work?

Also looking into Moroso oil accumulator

heres a bit on the oil restrictors,

[huddy]

Yeah i might be interested in that MOROSO group buy... especially as they're only $330 ea anyway.

I reackon i've got the jist of the oil restrictor thing / and 11mm head stud thing.

Any more tips / hints / advice will be appreciated

cheers

-Matt

[Al]

Wastegate size is determined by turbo size. The smaller the turbo, the bigger the gate; as more exhaust gases need to be bypassed. I still say go for the 45mm gate or above.

[brada31ke70]

ah, mr huddy, i have read a few of your posts in the cefiro forum. going 26/30 aye? i ran a bottom end bearing in my 26 cefiro and have also decided to go 26/30, i purchaced a series 3 siloette rb30, it has all of the oil lines in the block, i think there was one for sale on boost cruiser for $150. just having fun extending the down pipes off the twin turbos at the moment, not so easy doing it in the shed. good luck with the build. if you are running a 26 head do you still need to run the oil restrictors, isnt one of the oil galleries blocked off? i have noticed the 26 block has one of the oil galleries blocked off compared to the 30 do you need to weld up the 30s oil gallery? is running baffels in the sump necessary for a 30? any information will be greatly appreciated. sorry for crashing your thread huddy

Edited February 13, 2009 by brada31ke70

[Roy]

Just buy a cheap RB20 and throw a 26 crank and rods at it ...err oh

[huddy]

hehe that's right ROY... still love the 20's just after a little more torque... going from 2.4 to 3.0 should do the trick

[NismoR31Jet]

Not all RB30's had oil feed and return bungs in the block.

Very early VL's had the series 1 block which has no ports for oil/water lines, to be honest, I have only ever seen one!

Pretty much all R31's have the series 2 block.

I am doing the same engine for my wifes car. I have the rb30 bottom end with a 26 head. My biggest issue is to go twin high mount turbos as my head came with a brand new twin high mount manifold, or a highmount single.

[Al]

Just buy a cheap RB20 and throw a 26 crank and rods at it ...err oh

I think you're over due for another drive of my car Troy, just to jog the memory banks . It's a little different than when you drove it during the "run-in tune", that's pretty much my low boost now; high boost unleashes an angrier beast .

Still have some more "tuning experiments" that i want to try, to see if she has more in it, should be sorted in a few weeks.

ie: Apexi exhaust, adjustment of inlet and exhaust cam gears, etc.

[N1GTR]

Al are you entered for deca?

You wont believe how this thing goes