Roy

Putting aside numbers for a second. Here is a 210rwkws Hypergear R33 GTS25t on good street/track tyres.(camera car). In fronf of him is an R33 GTS25t with a Trust T67-25G setup on RE55s. And in front of him me with my TD06-20G, I think i still had the std inlet plenum on at this stage. So you have 210rwkws/street tyres chasing 310rwkws/semis chasing 260rwkws/semis. John in the camera car is a bit mad and with slightly quicker cars in front of him does a brilliant job of hunting us down, and murders us both under brakes...but you see the acceleration isnt worlds apart...and funniest thing of all...you dont see the T67-25G R33 get near my bumper let along overtake... I think this vid puts the numbers people sometimes chase into perspective. Would have been real interesting if the camera car had RE55s and had the same corner speed. But an extra 100rwkws means we do get away but we are hardly leaving him for dead.

Yeh its strange. You would think it would yield a better result. As I pointed out they are not overly different to my old Trust manifold in teh collector at different angles too...yet the Trust manifold was more responsive then the 6boost...so the merge collector is perhaps nice but a bit of a wank on a 6 cylinder...I can only put the better performance of the Trust manifold down to its 6-2-1 type arrangment vs the 6boost 6-1 merge collector. Perhaps the 6-1 works better when if its a twin scroll manifold so really only 6-2. I dunno....but after reading thread after thread of 6boost having the most effecient design and collector getting around and most responsive yadda, yadda I was a bit gutted to have spent money on the manifold, new gate, piping to go backwards in response. Marginal, but backwards all the same. They are durable and I expect it will give me years of trouble free running so that is always a bonus. So perhaps air is just lazy and these things dont really translate as you would hope. I agree that if you can get the design 100% right then you should aim for it....even if it doesnt correlate to a tangible performance increase....its nice to have things right. But that said when the manifold is 1/3 of the price you can be forgiven for forgetting niceties and worrying about performance and budget. For the moment its all conjecture until someone bolts one on and gives it a nudge.

I have had this setup since early 2003. You would think I dont find it too annoying when you consider I have ran this setup for 9 years! I appreciate its not for everybody...but sticking with the 20 is definitely the cheapest, very reliable and easiest option.

I suppose his setup uses 50% PULP

Yeh, RB20s are terrible! Here is a comparo from a few years ago ... The RB20 gives away 500cc, half a point of compression and variable timing on the inlet cam ... AND is an older engine. So on paper where you dont have to pay for things or get them registered it seems a no brainer. But in the real world where your folding stuff is what you are handing over, and you want to get the car registered with correct engine numbers etc BassJunky R34: GCG Hi Flow, Poncams same tuner and dyno as me Abo Bob R34: GCG Hi Flow, built engine, think he had Poncams as well. Different dyno, different tune My setup: Std RB20, std plenum, a TD06-20G setup Main reason for the difference is the R32s higher final drive ratio adn 17" wheel vs 18s of the R34...but all are 4th gear pulls. Even if you only compare BassJunky's result and mine as they are both from teh same dyno and tuner....you can readily see that when you open up the taps why the RB20 easily keeps pace with the RB25NEO with a Hi-Flow GCG turbo. So not saying the RB25 isnt superior...but I sure as hell have made the decision to keep my money in my bank account and spend the money on tyres, fuel, oil and driving it at the only place you can legally and safely enjoy the performance. So getting back to the OP, fix the bolt on gremlins and ascertain the health of the engine. In which case a $600-800 wrecker motor with warranty is your quickest, cheapest and safest fix. If you have the budget to rip it all out and start again with a later model engine then go for it...just talk to industry people as it is not as cheap as many people make out PS...i will add both R34 engines popped at that power. One going forged internals after melting a ring land and Bass Junky's car having another engine put in...neither saw as much let along more track work then my car...though they both probably see more road kms than my car. Not to say their cars were inferior, both tops cars and modded carefully/well. A large part of the reason my engine is still running is luck, but a part of it is testament to the strength of the RB20

RB25s, pfft

All that will do is fix the arc that that the turbo flange and dump pipe will "swing" when it all glows red and there is a mechanical load on it. The best way to do a bracket is to use the tapped threads off the side of the head which are for engine removal. Throw a support to the underside of the turbo flange....support the dump/front pipe properly off the gearbox mount and even a thin walled stainless manifold will last for years.

OR, for $150 just buy the back door Kando the Great housing that will bolt to your modded manifold! Even a well made spacer will just be introducing more bolts and gaskets to leak and decrease clearance to the inner strut upgright http://www.ebay.com.au/itm/Turbine-Housing-Kinugawa-TD06SL2-20G-T67-25G-T3-8cm-AR61-V-Band-External-/270900070544?pt=AU_Car_Parts_Accessories&hash=item3f12e70890#ht_2093wt_1270

A few of us Aussie lads will be in Germany in March and hiring some Exiges to attend ... http://www.pistenclub.de/Portals/0/Anmeldung/Anmeldung_NBR_GP_2012-03-26_uk.pdf Get the R34 out for a crack

Kimi will be Kimi if he wins a race or not he will be there...it will be more interesting to see how the new upstart goes I will be rooting for Grosjean to hand it to him. BIG ask, and I dont think it will happen but Grosjean is in a great position to show whether he is a good driver or a little bit special as he grows through the year. And really want to know what One have planned for 2012...I rang Foxtel the other week and they didnt have a clue what was happening with F1 coverage in 2012

I dont care if they are fast or slow. They are CHEAP! Fark spending 2k on Yoko etc. Cant bring myself to pay that for tyres just to run around at a sprint day

Why does it look like it would have boost control issues? Here is one of their pics and a pic of my Greddy/Trust TD06 manifold that hlds boost like a champion, better then the 6boost that replaced it. So cant see the issue the rest of you all are vs And I dont mean to rag on 6boost, so far mine has been a durable thing and overall happy with it. But has anyone taken their turbo off after some running? Have they noted that the collector splits open in the ID due to temperature expansion. The welds are not full pen and the join seems to propogate open. So i question will the split actually propogate out to crack the weld? If others look the same then I wont worry as you very rarely hear of problems with 6boost manifolds. The 6boost manifolds seen a little sensitive to the distance from the wastegate is mounted from the collector. Coomon knowledge these days on where to mount the wastegate. So not an issue. But plenty of people had loads of problems at first trying to get the 6boost manifolds to not get massive boost creep, even with various springs. My 6boost / Turbosmart setup has an 8psi spring in it but min boost is around 15psi. Fine with me as I want to run 20psi. My Greddy gate had an 8psi spring and guess what, with no boost control the turbo ran 8psi. Now people have it worked out. You can guesstimate what spring, gate lcoation will give you the coost control you need. The longer length wastegate pipes are typical of the Japanese manifolds, and the angle seems very similar so expect (thats no guarantee, but an educated guess) it to be fine with regards to holding boost.

Well plenty to watch and root for this year. Grosjen at Renault. Senna in Williams. Disco Dan at STR. Petrov at Caterham and of course Webz be VeTool. As long as Hackilton eats armco and carbon fibre as much as he gags on cock 2012 will be a great year

And people insist the std manifold is a good thing and doesnt hold back performance No sin to be running the std manifold as it makes so much sense in many ways...but it does limit the performance you are going to get. I hope my new turbo with a billet wheel doesnt trend the same way the GTX turbos are going with regards to response. They do flow better at higher pressure ratios...but, but yeh...at what cost to response. Still a good result for 90 ULP too!

I know some are happy to see the back of Trulli...but this is a BS move. They gave the guy a contract and just gave it away to a guy that has not even tested for the team and nobody even knows if he has the pace of Trulli or technical feedback Dont get me wrong though, I love the fact that Petrov has got a steer...but pretty piss poor form of the team I really want to get behind...but, at least my mad Russian has a seat in 2012...even if it is from a bonehead cash driven decision

I love how everybody makes out that the Nissan brand is so immaculate. Like it enjoys the customers that Mercedes does Nissan is cheapsville wanker performance on the whole. So many punks drive Nissans...I would rather bogans than this bunch No disrespect to people reading that happen to look liek the above...I am just old and out of touch with the times

Can you FAST an engine number to find out what car it was in?

RB20s loves the revs, this is 8,800rpm limiter with std cams And the engine is out of an unloved 89 Laurel or something and been in my car for 60,000kms of thrashing

Was there reasoning behind why they didnt run the diffuser all the way to the side, rear spats that are beind the wheels. Amazing fabrication...some goods craftsman out there!

First things first...keep it simple and replace the coil packs with some new ones. The miss coming and going is the coil packs. Very common, mine did it for about 2 years until I got sick of the random nature of it and threw in new Splitfires. RB20s take the same coil packs as RB26 so shop around for whatever new replacement ones you can find. Maybe these http://www.skylinesaustralia.com/forums/topic/297703-yellow-jackets-coil-packs-best-price-world-wide/ Throw some new spark plugs whilst you are at it. Gap them down to 0.8mm. Then at least you will have a decent baseline. Next time you get a miss just remove the plug from the back of each coil pack whilst the engine is idling. If the miss gets worse its not that cylinder. If the miss stays the same with a particular plug removed then you know thats the offending cylinder. As for the smoke. Are you using oil? Do you run a catch can setup and is the factory PCV valve still plumbed into the rocker cover and turbo inlet? Is it smokey at idle or with a quick punch of the accelerator to 2k or so? Or is it only after load/boost and lift off? Also, do you run a boost gauge and do you know the boost its running? Have you pulled the kick panel off to see if the ECU has any stickers and things on it or other signs it has been tampered with...if so by who? I suggest you get a mechanic you trust to look at it if you cant diagnose bits yourself. Last thing you want to do is put an RB25 or another engine in it and find you have the exact same problem because you are re-suign shitty old coil packs that overheat and short out and the same R34 turbo that is shagged.....oops, nothing wrong with the old engine I just paid good money to remove Check the basics....Nissan enginers are just fancy Datsuns, they make noise, bits fall of them...but with bacically std power they take a lot of abuse...so usually all the bolt ons that age and fail...not the engine. USUALLY

But bringing people back to reality for a second! Its a 335rwkws std RB25 with a bolt on turbo! That is mega. Perhaps a gate, manifold or other combination may be a tad punchier, but show me a single bolt on turbo that will match this setup???? I haven't seen any? Would be pretty mint, stock looking setup if his pipes weren't so sex when you open the bonnet.

Not taking away from the results for a second. For a bolt in internal gate setup its brilliant and un heard of power and response 5 years ago. But have to say I am a bit disappointed its not making 200rwkws until around 4,300rpm which is only 200rpm better then my RB20 with a TD06-20G on 98. I am really looking for a 330-350rwkws setup that does 200rwkws at 4,000rpm. I wonder if something like a Full Race manifold, twin gate and GTX3071R on a std RB25 would do over 200rwkws at 4,000rpm?

...on farking corn fuel Gone are the days where people are chasing numbers on 98. Come on Caltex, forget Commodore company cars...the performance enthusiast is a bigger market...get more servos stocking it

Any decision on this? Sorry if I am being a pain in the a55. I have some spare time weeknights at present and can give the times a good audit. Come March I am going to have the car in the garage working on it in all my spare time

The MX5 video is interesting. What tyres and mods has he got. His corner speed is great. Makes the Skylines look clumsy