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LOL of course I know you need to use Skyline parts - what I meant was whether the balancer has to be from a RB30, RB26 or RB25 or are they all interchangeable?

Keep it simple try not to think too much. :pirate:

I've said use the balancer that is suited to your ancillaries, so do just that. :ph34r:

All pulleys must match and line up. So... use the balancer that is matched to your ancillaries, that would be the balancer that came with the car.

Just to add to Cubes reply, You definitely wana keep it all the same.

VL's used two different Rb30 balancers (year specific/different belts).

I'm sticking with the VL setup -cheaper to replace pwr steer pump etc..

Edited by Alf

lucky, i just bought a sexy rb30 power bond harmonic balancer for my 25/30, lucky it still lines up then- i ditched the a/c tho as the balancer doesnt use it, one less thing to worry about.

my donk will start bein assembled this weekend and over the next couple, just dummied the head/block/plenum/turbo and ex mani up to see how everything lines up (pics below) and everythings sweet except the vvt oil feed which comes real close to the plenum. can anyone see any probs which i have missed??

also i heard that the block needs shaving on the ex side for the mani to fit, however mine was all good, is this normal??

post-23187-1175613466.jpg

post-23187-1175613559.jpg

post-23187-1175613578.jpg

post-23187-1175613728.jpg

It was a new one..however its just been rebuilt by Mr Turbo down the coast...so it should come back stronger and better.

Lucky there.

On the new motor we ran too tighter bearing clearances and the crank started picking up bearing metal and it clogged the oil feed line to the turbo..starved it of oil and bam...ball bearings in the dry sump tank! However that has now been rectified.

Well we plastigauged mains and big ends at 1.5 thou'or .030mm i think it would be if ive calculated that in my head right...rough enough maybe?

Need bigger for race motor with relatively big power, and doesnt get run in....gets built, straight on dyno and then raced.

I've got a RB30 block sitting on the floor infront of my RB25. I'm wondering if I should put a set a cams in it before i do the conversion? Sure you can make good power with the stock items..

But, is it a better option to do the cams and make a fatter power curve, or spend the money somewhere else?

I'm in 2 minds.. but leaning towards something like a pair of step2 HKS.

They will be fitted with adj gears. which I hope to buy very soon.

I want to make a strong power figure, but not so keen to have to pull 8000rpm to make it. Hence the conversion. I'm after about 420ish rear hp. got GT3040r. it should come on strong a bit earlier than the 35.

Am I thinking right?

cheers.

I've got a RB30 block sitting on the floor infront of my RB25. I'm wondering if I should put a set a cams in it before i do the conversion? Sure you can make good power with the stock items..

But, is it a better option to do the cams and make a fatter power curve, or spend the money somewhere else?

I'm in 2 minds.. but leaning towards something like a pair of step2 HKS.

They will be fitted with adj gears. which I hope to buy very soon.

I want to make a strong power figure, but not so keen to have to pull 8000rpm to make it. Hence the conversion. I'm after about 420ish rear hp. got GT3040r. it should come on strong a bit earlier than the 35.

Am I thinking right?

cheers.

the right cams (not sure what they are) will certainly give you more low-mid power. However depends how big a cams u put in, you'll have to check the head and possibly get it machined to clear the lobes. Oh and you may also need heavy duty springs.

Also, it may be worth while spending the extra money and rebuilding the head and getting a light port job.

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