rev210

RB26 out of R32 GTR Running good nik $2,900 Location:Perth Contact:PM Comments: R32 GTR RB26 long motor (the usual head to sump without the usual ancillaries) Kms would be the usual 100,000+ timing belt has been done less than 20,000kms ago. Drop into your GTR and go or bung it in a conversion. cheers.gif $3100. ! ! ! * timing belt replaced. * complete minus the ancillaries like power steering /aircon/alternator. * Includes plenum/ throttle bodies & fuel rail (no injectors or reg, easy to get) * Includes sump/ front diff * Turbo oil & water lines & intake piping all there. * No turbos * Has been made ready for map sensors (D-jetro / aftermarket ecu) * Motor was well cared for and serviced by previous owner. It was running with excellent oil pressure and had a compression test done showing average of 160psi Any questions PM me rev210

Basically that's what I was asking someone to help me understand in terms of why the stock cams are so much better. I've seen evidence to the contrary, my own car on the smallest turbos. What I'd like to see is a graph showing the low rpm greatness of stock cams on the upgrade turbos (like the N1/GT-SS/-7's/-5'S) exact same turbo type / boost and prefferably engine. Also with a list of all the settings for both (I don't ask too much do I). Wonder if Sydneykid would like to stick his nose into this thread?

SAU gets famous. Whoo hoo!

you lose power.

I think my new thread on GTR's is just what people are really looking for in this one and just not getting. Check it out now!

How nice. got the scan of it so we can add it into the thread?

I think the cost aspect is certainly a downside for sure. But, when you are looking at the alternatives for limited top end power to get a much faster car. They aren't bad value really. I was lucky * $800 second hand tomei's with gears * $300 dyno use (mates rates). I sold the GTR cams for $200 so all up I was $1,100 down for them. Pretty good value for me. But you can imagine what driving the car was like in terms of on-call power. Really cool having pull from 3,000 rpm. With bigger huffers you say good by to that sadly. Be interesting to see what I can do with the GT-SS units. I'll make notes of cam timing settings when I get round to it. BUT. If the motor I had wasn't so old and I wanted to lean on the turbos for more boost. At the time I could have had that 50rwhp more advantage from 3,000rpm over a cam gear adjusted stocker plus the better part of 30+rwkw all the way up the curve more than adjusted stock cams . Thats not a chicken feed power gain. I say that knowing I can replicate it again.

too big?

I can't spell sorry.... My bigger group A turbos installed later on were heaps laggier. They were a fairly big turbo afterall , there is only so much you can do with big turbos. I also dusted piston 3 (lowish compression) so the 280rwkw tune I put in later was pretty faggy and I didn't spend as much time on cam timing. However I would gladly take the $50 challenge against a set of GT-SS turbos and 260 tomei's and stock cams (with adjustabe gears) on the same motor. Actually I might challenge myself to that one as well I happen to have the GT-SS units. The setup of the cam timing is a tricky thing for many, including me. It took lots of time to set up mine on the dyno (I was fortunate it didn't cost me much). I dropped the allen key and burnt my hand so many times too altering the exhaust cam. I'm like a broken record I know but, good matched cams work a treat if you bother with them and work out what to do. Beer Baron, Most stock cammed and even cam gear adjusted GTR's have basically the same power as yours at 3,000rpm. ie: not oodles. On your curve see if you can find another 40rwhp or so at 3,000rpm with adjustment of cam gears on stock cams, to match the tomei's I assure you it's a waste of time trying buddy. You could maybe try race fuel? or a 50hp shot of nitrous? Also, think about how much additional power curve I would have on there at 3,000rpm with the same boost as you. I had standard front and dump pipes on mine. But, basically the same setup as yours with the exception of running a cat.

Hi Beer Baron, I can only find 1 of the series of dynos I did for the cams on the stock turbos, an early one unfortunately and not the most impressive, at least not to dyno queen obsessed people I ended up lopping the peak around 300rwhp on purpose but I was making it in the end around 5,000rpm from memory at basically 10/11psi on the later tune before one of the rickety old turbos let go. As you can see, I was making full boost and 160rwhp at 3,000rpm on a 'nanna' tune. 10psi stock turbos with the cams. It pulled like a freight train by comparision to the stock cams, which at 3,000rpm had a joyous 40-50 or so rwhp less on the same motor. making that attessa work plenty early. The bummer is I should have collected more of the tuning graphs for prosperity, as a comparison on the same car/motor/time is really the only way to go ideally. djr81, if we compare what mine has 'down low' just from this graph you can see tomei cams absolutely hand standard ones thier ass not the other way around. actually in terms of lag/power at 3,000rpm it lays the smack down on a stock turbo R33 gtst rb25, in fact a little more than a RB30DET with rb25 turbo. oooh thats gotta hurt! I'm investigating going down the same path again and I have absolute confidence of the outcome on stock turbos, as unremarkable as they are.

Hi djr81, I certainly can't agree more with your comments about focusing on engine and ancillaries abillity to match a desired power level, it's good advice for any new or future GTR owner. And you draw good attention to the fact that 'bolt in cams' aren't always a simple drop in and go. People should budget for more than just some cams. But, I think from the outset people often miss the potential and real benifits of installing the right cams by assuming they ought to be tuned in such a way as to attain more outright top end power. Setting up cams, for many seems to be focused exlusively on bigger power numbers on thier local dyno.But, what if you looked at the best gains selected cams have always offered in the abillity to give you greater tuning control over the shape of your power band ,'boost on'. I installed cams (260s) on my old Aussie R32 GTR as both a performance mod and a way to increase the motors longevity. As you mentioned, I looked at the limits of stock - Pistons / fuel system/airflow meters/ old motor etc..as having a horsepower limit. The old Rb26 also would ideally like to live life at lower rpm with less heat as well. Along with a few other things I looked at the option of cams to help me acheive more within those limits and succeeded. With a set of tomei cams in on stock turbos I could do things like; * bring the boost in 500rpm or so sooner. * have more power everywhere once boost was on (the fun part of the rpm range) * make the same 'limited' maximum power level as stock cams, to ensure airflow meters/fuel pump/pistons etc are within a safe margin. Importantly I made this peak power figure with; * less rpm * less timing * a richer AFR (under boost/load) * less boost (meaning happier turbos) * lower intake temp (lower boost) I had no orginal plan to upgrade the turbos, only did that after one died of old age. My main reasons were ; * to make the car perform better under boost (the fun part of the rpm range) * to increase reliabillity of the motors more sensitive areas by decreasing its efforts in the airflow/pumping air dept. when getting it's neck wrung. A set of 260's may not be the best cam combo to get the most out of the stockers but, I do know they work much better than stock cams, making more power once positive boost is reached.I know This by virtue of spending quite a few hours on both cams (tomei & stock) altering cam timing tune on exactly the same motor, setup and basic conditions. My regret is I should have taken a bunch of printed graphs home to post up. Will next time, promise I just think it's important to avoid focused talk about 400rwhp or any other number as a single number, determining when cams should or should not be bought.

History shows this isn't the case at all. It goes back to the 1 tonner days. Plenty of hoon tradies worked them up made them look like show cars and then threw crap in the purpose built trays. Many quick ones around back then. A friend of mine used to go down the drags in his beautiful XD 460cube work ute running 10's in road trim, though admittedly not with the wheel barrow. Although I reckon he would have if the scruteneers allowed it. The theory is good 422kw, bags of cement, lumber and donuts.

The words 'a budget setup' and RB30 hybrid don't mix. Slap a second hand Rb20 in and build an RB30 hybrid on a stand at your own pace financially and do it right the first time. You have plenty of time to read over the very worthwhile 304 pages, like everyone else does.

You have to read the thread stickied above about the RB30 conversion. A mod will probably lock this thread.

The pulleys are good for the reasons already mentioned. I had a set on my old GTR and I'll get around to a new set for this one. If you add the weight saved by swapping them along with a fan change to electric, a lighter/better balancer and some adjustable alloy cam pulleys then you get a pretty decent improvement in response. Be about 5kg or so, which isn't shabby.

Use the search function mate. go here and look for starters; http://www.skylinesaustralia.com/forums/Rb...no-t103095.html

Have pulled off a set of turbos that were meant to be HKS GT-SS. Appart from HKS actuators there is no HKS branding on the turbos themselves anywhere. The Tag on the turbos indicate they are a garrett off the shelf item. 707160 -9's The front cover has no A/R marking just the normal nissan M24. The rear is the usual 0.64 A/R. The specs on the 707160 -9's seem to indicate they are 'between' the 2860 -7's and 2860 -5's in size. link http://www.turbobygarrett.com/turbobygarre...0R_707160_9.htm Anyone with GT-SS turbos remember what they looked like?

Do you think that what we need is Fat Bald Middle aged Men Mind control helmets to stop them thinking such thoughts. Actually I guess the only people worried about them thinking these thoughts are people who can read thier minds as they drive down the road, like you? With such an abillity, perhaps you are a ninja and can bring us all justice on the issue .As it indicates from your website; www.realultimatepower.net

A well shielded and cold air fed pod filter will give you sweet bugger all power over the standard airbox. If you have an unshielded pod you will have quite a bit less power than stock. Hold onto the standard airbox and shove a good replacement filter in K&N or Pipercross.

Nothing like the treatment people give our domestic and international parcels. The beauty of second hand PowerFC's is you can test them in the space of a few minutes. Easier done when purchased locally. EMS is a good little unit.

Thats nice if all you are after is peak power. A correctly cammed motor has an earlier and fatter power band. The average power is much higher and therefore the car significantly faster in every regard.

I hear what you are saying. Doesn't really answer the question. I have had 'first hand' experience of exactly the opposite, as have plenty of others on this forum and abroad who don't fit the 'kidz on the internetz' category. They seem to validate manufacturers claims. And why wouldn't they, the theory supports the 'real experience' and manufacturers claims (based on real test engines) also. There was a bloke on these forums a while back who worked for one of the manufacturers (tighe?) and had access to a cam design program that gives pretty good info on what changes to cam design will have on a given motor. I cammed up the exhaust side of an Rb25 with pretty much exactly the gains he suggested set at the timing he mentioned. Lets hear some actual reasons in design why this might work.

Seems to be contrary to bulk of actual experience with GTR owners globally and manufacturers claims. I'm interested in why you think it is all the same

I've never heard of a 'dud' power FC purchase to date, not that it may not happen, just seems to be by far the exception ot the rule. Searching this forum you struggle to find someone complaining of a dud purchase....

As someone who has done the poncam tomei cams on stock turbo's I would say otherwise for gains not being good for the money. They are excellent gains actually. Driving the car with stock turbos and upgraded cams over standard is a fantastic experience. You are going to see the same substancial increase in the power curve shape along with the benifits of lower rpm/boost less aggressive tuning on fuel/timing and lower temps to make the same peak power all good things for standard motors and turbos. I'm going to do it again in the not too distant future with this bunky gtr I have. Later on when you upgrade the turbos they are still in there to be used.