BoostdR

It made 823hp 3000rpm 406nm 5000rpm 879nm 7500rpm 759nm 8300rpm 698nm 823hp @ 22psi BP98 Fuel with 10% methanol Matt

I wouldn't bother at your power level. The OEM manifold is a good thing up to 300rwkw

I'm going to have to disagree on a few of your points Justin, sorry mate The factory car had no issue's as the pump pressure was matched to the factory restrictor. Cast piston clearance and ring gap is also much less than forged meaning less blow by. CRD'd comment about putting in a smaller restrictor making no difference intriges me as its not the first time I have heard a comment from someone there that is obviously incorrect. I think the story changes with who you talk to there. So the issue shows itself because: 1. a higher pressure pumps flows more oil through the same size restrictor giving more in the head 2. more blow by from larger piston to bore clearance, which floats the oil in the head 3. G forces from track work and constant rpm compound the problem So with what we know, reducing oil flow back to the std amount will not bring us back to factory spec due to the increased blow by gas. To get around this we need to do at least one of the following: 1. Increase drain back to the sump by enlarging the oil galleries which is not easy and not much diameter increase to be had 2. Run a crank case breather which will reduce the pressure differential from sump to head encouraging the oil to return 3. Install a rear head drain which also acts as a breather As Sydneykid said a while back there is a multistep approach required to fix this issue. And you have to complete all the steps. There are easier ways to get around the issue, however usually have a downside. -Running a scavenger pump or catch can drain will still give a head full of oil which leaves less in the sump and a harder path for the blowby gas to travel up and out...usually resulting in a spun bearing or spitting the dipstick out. Matt

260 9.15 for up to 850hp on a 26/30. Any longer duration we found just lost response(at the same lift)...and did nothing to max power. Having said that some will argue a longer duration cam will reduce lag(on a Rb26), but I feel that would be related to the associated lift and porting. I for one would love to try the Mines-wave Shore Pro II Cams 252/252 10.05mm. They are designed for a RB26. Tells you something about duration and lift relation to acheiving a responsive engine. I have had some Gibson cams dialed and the told a similar story, although being staggered by a reasonable amount. After all we are after max average power, having a cam come into its zone from 5000-10000 is not going to be as quick as 3000-8000 on a rb30 that revs to 8000-8500rpm Matt

Going from a 1.5mm to a 1.1mm restrictor reduces flow by 47%. I have also dropped pressure. I'm sure it will make an impact. Matt

Yep ,oil filter is easier to get to aswell. Matt

I have to move my PS tank aswell. What did you use for the lines?

prob another week or so guys, depends when my delivery from the States arrives. Was sent on the 20th so hopefully not to far away. Matt hoping to fill the mid range in a little. Note this is Flywheel

haha, I grabbed it anyway. Worth a try.. will give me something else to test on the dyno after my 6boost manifold install. Matt

I have a RB26/30 and can't help to think the larger capacity will be better. The reduced velocity from the larger intake should also aid better cylinder distribution. The gains due to the butterflies being after the Plenum are not the same as other plenums however. The linkages on the 6 throttle OEM have to be lengthened by 10mm or so. There should be enough adjusment available to do so. Not sure about clearance from the brake lines on the master cylinder. For the money, I will eventually give it a try. The Casting on there is much better than the Rb25 ones. Matt

I have installed a hioctane 1.1mm restrictor in the block, just waiting on my stainless braided hose for my water lines. Matt

Pump Drive New seal will be installed. Matt

pm replied

Checked the crank, it does have a R33 Crank. Have pics to prove No loom but have a R33 GTR one avail Inlcudes turbo's postcode 5019 can get ready for transport whenever. Have a pallet here. Matt

I tried everything. I have a nismo can, also installed a breather from the dipstick to the oil cap. I found that when it spits it out it comes in a large quantity, faster than it t Drains back to the sump from my can. Only way to get it to work I found was to run a scavenger pump from the can to force the oil back into the sump. All of which is not optimal. As I said before. 1.1mm restrictor Reduced oil pressure Installed head drain to front passenger side of sump. If I still have the issue slightly I will install my boost pressure activated scavenger pump in the head drain line. Matt

I have just installed a 1.1mm restrictor from hioctanedirect also fitted my pump with STD springs as my reinmax pump springs were .1mm thicker. It was also running just under 8bar max. I would rather around 6. I have also had the white smoke. Seems to get past the valve stems every now and then. Mine does it when it has been hot, sits for a bit then restated. Totally clears up after 10min or so. Only happens when the head has been full of oil.

You can make the problem worse with the mines baffles as they do not allow much drain back once oil gets into the baffles. In the instructions it lists to put silicon half way up the internal runner. I would leave it as is so oil can drain back. Also leave a gap in the foam to allow the oil to fall. matt

Very tight motor

Complete Rb26dett from a R32 GTR. The car did have a late model Pull Type gearbox so also hopefully has the full face crank drive. Will be looking into this. Travelled Genuine 115,000km totally Stock very healthy had 100,000 service N1 oil and water pump Compression test very good Located in Adelaide Buyer to arrange interstate transport from my house $3800 if 33 crank $3200 if 32 crank Matt 0413023669 Video of Motor Running before removal

does it sit any higher than the std bonnet? For extra engine clearance that is

So I pull the harmonic and timing cog off.. Can you elaborate on this gap? The motor has a N1 oil pump on it now. Actually I think I know what you mean. There will be a gap on a half face crank as the flat bit of the drive doesn't extend right out to the edge of the pump. Should be pretty easy to tell. I will have a look and put some pics up. Cheers Matt

I've just removed an engine from a 1993 32 GTR to find it had a pull type gearbox. It is not a vspec but is a late 93. The oil pump has been replaced along with the water pump. Is there any other tell tail signs to if it's running a full face drive crank from looking from the outside? I don't want to pull the motor down if I don't have to as it is going to be put up for sale. Just seems a waste as the only reason we removed it was to fit a 33 motor. Matt Thanks in advance

ratios?

Tomei oil restrictors are 1.5mm. You can't measure them accurately with a vernier, best to use a drill bit. What oil pressure max does it have now?

I was using the same manifolds and dumps. Still going with the tomei Dumps. I plan on using a piece of OEM heat sheild. The multi layer with ceramic internal. Your hard pipe kit definately won't fit. I checked my clearance today and my kit will fit under the bonnet..by a very small margin. I have heat wrapped the manifolds and prettied them up with some black therma-tec spray. I have to remove the head to reduce the oil restrictor down to 1mm, then will complete the installation. Matt