Cubes

With the proxes4's on the rear I can now 'almost' get all of second down. 3rd doesn't give the slightest hint of letting go. First gear is still pretty useless but with half throttle it seems to hook well, short shift to second and then be a little soft on it.

No unfortunately not. I went with the suspension + reasonable tyres + ebc + cams + new steer rack and a few other bits route instead. Otherwise it would have been only wheels and tyres which I would not have enjoyed anywhere near as much. So far the short 20km drive quite happy with the Proxes 4. Nice and grippy in a straight line. They have 2x the straight line grip of a near new 245/40/18 nankang NS2.

If that were the case why doesn't F1 and v8 supercars etc run super low profiles? Or does it have more to do with regulations more than anything?

Thanks. The size I'm looking at there's a $45 per tyre difference. Bugger.

Fitting up tomorrow and then on with a set of teins a few days later. I've spoke to a lot of people are very happy with the proxes 4.

That it is buddy. Mark99 used a destroked rb30 crank with rods and custom pistons in an rb26 block to obtain 2.9ltrs. Very similar result. Curious if this is how they are also doing it. 150rwkw off the bat at 2600rpm is impressive. Its pretty much the same as my stock rb20det turbo'd rb30det was making without loading the car up prior to starting the power run. With the GT30 with 1bar it doesn't make 150rwkw until 3000rpm if you don't load it up prior. hence my comment of how a car is loaded up makes a huge difference to the look of area under the curve. IMO.

The way the dyno operator loads the car up also makes a huge difference to the look of the curve. I've came to the conclusion that its near impossible to compare a curve in a true sense. Mine for example during tuning was seeing 225rwkw at 4000rpm with 1bar; a usual shootout mode power run where you'd nail the throttle at 2000rpm and by 4000rpm we would only see 190rwkw. But none the less this gtr does have it.

There was a bloke here in SA 'mark99' who built a rb29 with almost identical results a year or so ago. He used an rb26 block, destroked rb30 crank, I forget which rods and custom pistons. Looks like am rb26, smells like an rb26.

Thats the one. 8th of March. Saturday 10am start.

I'll have a ask around about them. No need for a spin but thanks. Are the extra $$ really worth it? I hardly ever push the car to its cornering limits so really what I want to know is are the T1Rs noticeably better for straight line acceleration grip or are the benefits primarily with cornering?

8.5-9:1 is my opinion. 8.2 is fine if you wish to run lots of boost on pump fuel. Say your going for 400rwkw with a gt35r.

Heat is irrelevant they should be designed with rubber that is able to withstand the temps experienced. My stock coils get stuck on the plugs; but the rubbers never broke.

Pics.

A few things the pfc has over the stock ecu. PFC 20x20 load/rpm map vs the stock ecu's 16x16 load/rpm. For myself the PFC felt noticeably smoother some how at small throttle openings. PFC - Well known for its excellent interpolation between load/rpm points. = better fuel economy The PFC has a dash flash instead of just R&R where it drops back to a 'safe' map that may not be 'safe' under some circumstances. How an rb30det making 268rwkw manages 450km's per 50litres of fuel daily driving 60km/h stuff with a good tune is a testament to how good the pfc actually is at interpolation and the ability to tune it finer than the stock ecu due to its greater 20x20 load/rpm map. The PFC has never been a fully fledged ECU; hell even the microtech has more features standard. There's really little point comparing it to one when they are worth almost 2x the price. For the usual streeter a PFC is nice on the pocket and returns excellent fuel economy with minimal dyno time. IMO.

Hey ppls, I'm up for a set of tyres. Is there any one who has ran both the Toyo T1r and Proxes 4? Probably won't get too many replies but..... Are the extra $$ really worth it?

bish33. What afr's is it running up around peak power? My bets the afr's are spot on or a tad lean. Which indicates with a stock ecu the fuel pump is on its last legs. Give it 6months it will continue to lean out more so and we will hear of how your rebuilding the motor due to broken ring lands. :S Post the dyno sheet with afr's so we can see what state of tune it is in.

Guy; 30rwkw doesn't sound like a lot but factor in the auto + your mid range would rip his to pieces making the acceleration difference look more like 50-60rwkw.

bish33, Bring it down to the dyno day on the 8th of march and see how it compared to others on the day. Typically on the boostworx dyno r33's with similiar mods pull 190-200rwkw. With an adj. exh. cam gear around 210. Even playing field; same dyno operator, same strapping down technique, same dyno.

Simon's rb25det made around 220rwkw on turbo tunes dyno as well. Sounds around the mark.

Why not head down the local wreckers and pick up a short motor for ~$50-$150. I grabbed mine out of a running VL wagon; just happened at the time there was a bloke asking for a rb30e head and i wanted the bottom end so $100 odd later I had a running in good nick rb30e bottom end. Or you can pick up a complete rb30e with warranty for 300-400 max.

As I mentioned in a PM. Using a Z32 with the SAFC is 100% pointless as the SAFC bends the voltage back to what it would have been with the stock afm. As a result if the stock afm were maxed out yet the Z32 is outputting say 4volts. The safc will increase the voltage back to the maxed 5.1volts so the ecu against see's 5.1volts as it did with the stock afm. Stick with the stock afm, stock injectors and a nismo fpr in your case. IF you were to have the ecu remapped with a high flow then do consider the Z32 and ca18det or gtr injectors.

I did the SK method using a length of hose 2 hose clamps and a hack saw. Very easy and works well.

There is.

Those that have paid get priority when they want to run. So if you have paid and rock up at 12:00 and want to run your the very next car on. Those that haven't paid its basically if you hand the $$ to myself first then you get on the end of the paid list to run when you want. If that makes sense. I wouldn't be too concerned as people always rock up late and some people simply don't turn up. ------- With regards to club sponsorship etc. We have discussed its best not to do so until the club is up and running with a member base.

Mines always done that. Since I bought the car a good 6years ago when its odo was at 60k. Now 258,000km's later it still does it. But only at low speed from 0-20km/h then after its smooth.