jnr32r

jaja

Hey Frankie... nah he said he got me as i went up the bridge over the M4, i have no idea where he was ... I was a bit unsure if it was really that fast until i saw the PFC peak hold @ 155km/h.... ooops its such a tempting road tho dead straight and bump free....

Thanks to all of you who feel the pain.... Rang the RTA and they said its 6 months, unless i want to dispute it in court... I thought the copper was gonna say "walk home" but he didnt even mention any suspension.... FFFAAAARRRRKKK!!!!!

Got done doing 140 in Homebush Bay Dve on saturday nite... 6 Point and $1559... Anyone know what kind of suspension this atracts?

KNG blew his motor, but is saving for something big.... if you knrew how he used to drive that thing you would know it was bound to happen....

Im Damiens cuzin... KNG32R is RIP... but hes comin in my car for this cruize... you coming?

havent been on a cruise for ages, i might give this one a go....

There is definetly more potential with the RB26, but if you are on a tight budget, i would personally stick to a Fully Sik RB20 than a fully stock RB26....

So the RB20 PFC from AP engeneering can actually run a RB26??? What mods would that require tho?

That makes sense and would explain why our cars dont idle. If the base circle is 0.1mm thicker on the RB26 cams then all valves will always be 0.05mm open. But you said they cant reduce in height and then you said they will adjust themselves after an over-rev, so that means the oil is emptied slightly and the lifter height reduced. Whats not to say you can reduce that 0.05mm before installation by blowing some oil out and hence making all the valves colsed. Or are you saying that the oil will fill up to maximum capacity and then push down open the valves. If so i think 0.05mm is such small distance you might get away with it....

Actually Matt, i did install adj. cam gears at the same time and tried setting them at 2 degrees advanced on the inlet and 3 degrees retard on the exhaust without succes... so i dunno

Whats the reasoning behind soaking them in oil??

Its possible but we measured a few times and at slightly different angles and it was pretty consistant.... You know what i rekon !! I rekon we should all get together have a BBQ and get SydneyKid to install a set on someones car... What do you say ???????? If theres 10 of us it should be a 20min job.... LOL

SK: I can guarantee that the RB26 cams i have are 0.1mm thicker at the heel of the lobe than the std RB20 cams hence they would push on the lifters 0.05mm more than the std ones. Dont you think there is a need to bleed all the lifters before fitting the RB26 cams? We actually tried blowing out the oil out of one lifter and there was ~0.05mm difference in height. I can also guarantee 99% that the install was right. Its actually quite easy as there is alignment marks everywhere (crank gear, pulleys, backing plates, belt)...

lukevl: Im still confused how is it that RB20 cams have 360 degree duration???

Roy: It is measured at the heel of the lobe the flat section with no lift. Ahh32: Why did you soak them in oil?? WazR32GTST: Can you confirm that your mechanic actually bled them before he put them in? Im still not convinced thats the reason why they havent worked. Maybe Sydneykid can help here ...

yes did it myself... more and more now i think the lifters should be bled before the new cams go in..... I was about to try it but wanted to get more info as to how the lifters work exactly...

I tried the swap on sunday unseccesfully.... Changed them without any problems, checked everything was the right way, i even had a copy of the GTR manual to guide me thru. But when it came to starting it would start up and idle very bad. It was very lumpy and it wouldn hold idle at all. I played with the PFC ign/inj adjustments, but it didnt make much difference. At one stage it stayed idling but it was very rough. I also noticed that the boost gauge was only showing very little vacuum about -5mmHg. After alot of frustration we started thinking it could be the valves are already opening as the RB26 cams are 0.1mm thicker than the RB20s at the lobe. Which in turn will push the the valves 0.05mm open. I still dont really understand the hydraulic lifters concept and how they work. As i understand it when the lobe is pushing down the lifter it is solid as the oil cant escape and when it comes up it fills up with oil untill it gets pushed down again. So i suspect what might be hapenning is that putting the RB26 cams straight in without taking the oil out of the lifters will make solid and thus opening the valves, and then never fully closing as the oil cannot escape fully. If thats correct that would mean that before putting the RB26 cams in one should empty the oil out of the lifters. Im not sure if thats right, but if someone can clarify the lifter operation that would be great. RB20 cams are back in and everything is fine again....

thats what i used... didnt know that was the name for it

i wouldnt be so sure about that mate, why do you think torque settings are spceified.... i actually was measuring with a micrometer today to see if the cams were bent at all (these are the ones i bought from BBenny) and it turns out that there is a very very small deviation on both cams of 0.09mm on the exahust cam and 0.06mm on the inlet cam. And i could just press slightly with my finger right in the middle and actually change it by 0.10mm. So you can imagine how much it would affect it if you tightend just one of the bolts too much. The other interesting thing i found was that the lift in the inlet cam was actually 8.9mm not 8.5mm as seen on other threads. The exhaust cam was actually 8.5mm as previously described.

Roy, when you did ur cam swap did you use a torque wrench and set it according to RB26 or RB20 specs? Ill be trying the swap next w.end so we'll see how it goes...

Ive got a 2535 with 208rwkw @ 18psi. Full boost is at around 4000rpm In a couple of weeks ill be trying the Rb26 cams with adj cam pulleys and another tune. Im hoping for about 250rwkw @ 1.4bar.

67% for a R33 is about right. But in a R32 that has 270cc std injectors its more like 50%. It all the depends on the tunability.

i need to get my rack reco, its leaking oil and the rubber boots are all cracked and open. Can anyone recommend someone? and what is usually the price without fitting?

I need to know the input shaft diameter of a RB20/25 gearbox. I want to make a tool to centre the clutch plate when i fit it to the gearbox. So if anyone has a gearbox laying around and 5 mins to measure the diametre on the shaft where the splines are, it would be greatly appreciated. Thanks