Crank Collar

[hecticrb25]

What is the necessity of a crank collar during an engine rebuild?

[Beer Baron]

it has larger 'flats' to drive the oil pump.

[hecticrb25]

So if fitting an N1 oil pump a crank collar is required yes?

[GTR32GUS]

the early model rb26 had a narrow flat bit on the crank where it goes into the oil pump (does that make sence) which can get stripped

[Guilt-Toy]

depends how much money you have to burn.. if you can afford to rebuild your engine in the very near future then heck... why bother with a crank collar?

So if fitting an N1 oil pump a crank collar is required yes?

[GTR32GUS]

yes

[hecticrb25]

The reason i ask is that i have a spare s1 rb25det that im going to rebuild while its out of the car.

I have got my hands on some reasonably priced rb26 rods, got some wiseco forgies on the way, what else should be on my checklist?

Power goal is 300rwkw

Edited July 25, 2007 by hecticrb25

[Guilt-Toy]

as long as your support systems are all up to the task (injectors turbo cooler manifolds etc) sounds like your on the right track. Just make SURE you invest in the crank collar because its worth its weight in gold compared to rebuilding your engine again.

[hecticrb25]

What about oil restriction?

I hear rb25's get a bit too much to the head, with a better quality oil pump might run the sump dry yeh?

[Guilt-Toy]

i am going to take a different approach to the usual "do a search"

http://www.skylinesaustralia.com/forums/in...howtopic=110680

go there. there is all the information you need for the oil issues. IF your not going to be revving it past 6500 every gear change you probly wont need it. But anyway read that thread.

Check the forced induction guide for more info

[hecticrb25]

Sweet thanks Guilt-Toy!

[Guilt-Toy]

NP's =)

oh btw high octane sell the restrictors so go to www.hioctaneracing.com.au if you need to buy one.

I have made 363rwkw outta my 25/30 and i only have the restrictor - i did not go for the drain back from the back of the head to the sump (but i dont do any drifting or track racing)

Edited July 25, 2007 by Guilt-Toy

[paul f]

where can i buy a crank collar kit for my rb26 i cant find a link to buy them!!! peaple say they are for sale but where? websit please!!

[Guilt-Toy]

there is a JUN one for sale on the for sale section at the moment.

I have purchased 4 or 5 of them so far from Pro Engines. Very good service and they get it to you very quick as well (providing he has them in stock)

taken from www.proengines.com.au

Contact Pro Engines

Phone: 0448 826256

E-mail: [email protected]

Address: 18 Stephens Road Queanbeyan, NSW 2620 AUSTRALIA

Payments: We accept payment by Bankcard, Mastercard & Visa. Also Direct deposit and Palpal.

where can i buy a crank collar kit for my rb26 i cant find a link to buy them!!! peaple say they are for sale but where? websit please!!

Edited July 25, 2007 by Guilt-Toy

[paul f]

im located in the usa im in need of the crank collar kit/the proper oil restrictor(whats the proper one?), and the head drain return kit! is there an online website that sells rb26 stuff like that or an rb specialist website to research and find stuff for sale like that?

[hecticrb25]

Okay so here is a list of parts that i have/will be getting. Aim is 300rwkw.

RB25DET S1 in a S13 silvia.

Jun Crank Collar

Standard RB25DET Crank

R33 GTR Rods

Wiseco Forged Pistons + Rings

Oil Restrictors

Engine Balancing

N1 Water Pump

N1 Oil Pump

???cc injectors

bosch 040 fuel pump

GTR intercooler

Greddy intake plenum

Valve Springs

Tomei Poncams

Is any of this overkill and am i missing anything?

[Guilt-Toy]

Paul

There is no made up kit. I could put one together but it would cost too much money and i wouldnt even be able to sell them because they are really easy to make.

All you need is the JUN 1.5mm restrictor which is available from hioctane (details above) OR from Japan Nengun www.nengun.com he sells them as well.

The collar is available from Nengun as well but its a bit more expensive then the version from Proengines in Canberra.

Then if you read the oil controll thread that i linked above you can see pictures and details on how the drain back to the sump was made and you can source the parts and fittings from your own local sources (speedy fitting etc etc)

all it is.. is a drain back from the back of the head to the sump thats it. very easy once you have it appart and know what has to be done. Check the pics

DID i mention to read that oil controll thread ? just double checking that i did.

im located in the usa im in need of the crank collar kit/the proper oil restrictor(whats the proper one?), and the head drain return kit! is there an online website that sells rb26 stuff like that or an rb specialist website to research and find stuff for sale like that?

[Guilt-Toy]

are you going to get solid lifters? i kept the stock ones and they are starting to cause me some issues when try to push more then 360rwkw.

Anyway Nismo 740cc injectors are the only ones i reccomend. they will do fine for your power level and there will be room for more power later on if needed (4 hole injector's are your friend)

Okay so here is a list of parts that i have/will be getting. Aim is 300rwkw.

RB25DET S1 in a S13 silvia.

Jun Crank Collar

Standard RB25DET Crank

R33 GTR Rods

Wiseco Forged Pistons + Rings

Oil Restrictors

Engine Balancing

N1 Water Pump

N1 Oil Pump

???cc injectors

bosch 040 fuel pump

GTR intercooler

Greddy intake plenum

Valve Springs

Tomei Poncams

Is any of this overkill and am i missing anything?

[hecticrb25]

Will the hydraulic lifters f*&k out at my power aims + a bit?

[Guilt-Toy]

as a general rule your valve springs and lifters should be ok if they are in decent condition. its only when pushing them harder when you have issues.

My whole rb25 head is stock - stock cams stock lifters and stock valve springs and i dont have any issues at 360rwkw and might be able to get a little more but i dont really need anymore power.

Reason why i asked is because your getting after market cams which may put extra stress on them.

Will the hydraulic lifters f*&k out at my power aims + a bit?