Roy

Hopefully enough of a difference to justify all the suspension changes that are taking place at the moment. As soon as I pick the car up the turbo saga begins.

I am excited. Just got an email that there is some billet goodness back in my office waiting for me. Supppose I have to come back to Melb this weekend now I can already feel all that extra power in my bones. Fark the 18G for present, check the 20G tune and go straight to the 73HTA and see what the deficiencies are in the current tune. Hopefully give me a good idea of differences in characteristics.

I was liking the guy towards the end of 2010. I thought he had come into his own. By mid 2011 I wanted to punch the tv when he came on. Have to hand it to the guy that he invokes reactions

Most exhaust shops dont purge weld stainless because they more often then not MIG. Half the time you look inside and there is pterodactyl shit all over the ID. The other half there is nothing as there isnt full penetration with the weld. I suppose its all post turbine so not often viewed as being worth the expense of using the gas and having the extra regulators/hoses/bungs set up. Elite, If exhaust places are making dumps out of 304 then good to know. It seems to be the guys that are more into the competition car prep/race fabrication that go for the 321. So probably overkill for road cars. Though if a burner and its coil bundle use 321, LOL I know my dump will outlast the rest of the car

Oh man...this is all from memory...so happy to be corrected. 321 is on paper better then 304 at elevated temperatures due to the inclusion of titanium in it and improves its mechanical properties at high temps. You can get high carbon variants of 304, which are termed 304H. Not 304, and certainly not 304L which is a low carbon version as like 316L they have reduced strength at high temperature so not used for structural/pressure applications at elevated temperatures. We never use 304 in heat exchangers etc. Quite often we use 321 or other high carbon or stabilised austenitic stainless steels. In an exhaust you dont care about the corrosion properties of ss, rather things like the creep strength, thermal expansion and structural stability/embrittlement which is where the 321 is better. Though they are all about the same with regards to withstanding general corrosion at higher temps in only air. Years ago I was my old employers boffin on stainless and material selection. That was 12 years ago and now moved more into management so have forgotten the ins and out of the metallurgy of how the grain structures change/react to temps etc. But at the end of the day if people are using 1.2mm thick welded 304 tube in their dumps and lasting then who gives a shit what texts say. The proof is in the pudding. The lads where i used to work all used 321 for their crazy race boat headers and manifolds etc. The downstream exhaust was often 304, but the manifolds 321. I think you will generally find thats common practice in the old school world of header design and racing. Overkill? I dunno ps...it was either Prochem or Atlas that had pretty good tech data which may be of interest to anyone that cares

LOL, there are more important things in this world to know then grades of stainless My industry uses a lot of it so know a little, I am more interested in what lesser grades of stainless people use and get away with. I used 321 but not sure its worth the expense?

When talking SS prices, be sure to be comparing like for like. There is 304 vs 316 (L grades of each) plus all the other grades of 300 stainless, that are often more suitable for exhausts. You then have various standards for tubing. Your 304 is typically welded tube fit for arhitectural hand rails etc (A554 etc). Some use it no problem in exhaust. Other standards are for pressure piping (A369/270 etc) , heat exchanger tube etc and are far more expensive. Then on top you have wall thickness....so may not be a case of one place cheaper then others...usually just different. Anyone use Carringtons in western Sydney? They used to be cheaper then Midway, Atlas, Austeel, Sandvik, Prochem, Geordi etc etc Nice work on the dumps...have to be happy with that

Its from the Battle of the Supercar series. I have seen a couple of episodes but not that one. Episode 1: Turbo 6 Challenge. They normally tell you if they are modded, like in the Hennessey Viper vs GT etc episodes. That Porsche looks like it has a Techart front spoiler so perhaps they are hotted up.

Mates? Well he wont have many distractions for the coming season. Nobody on the grid likes him. His Mrs dumped him. He walked away from this Dad. Dennis isnt around as much to protect/support him. Whitmarsh seems more open to the two drivers and has never used words like "petulant" to describe Button...but has used such language for Hamilton. His support network on race weekends seems non-existant. Hoping his 2012 season is a cluster fark and his candle blows out and McLaren dont meet his pay demands at end of year. He will be remembered as a great talent, who was lucky to win a WDC whose most mature performance as an F1 driver was his first season. After that hsi head seems to spend half the time off in the clouds, and the other half up his ass.

Just make me a mod of that thread only. It has been so long since it has been updated and we would know who our quickest cars were if allowed to keep it updated...which in turns makes sure people post up times and pay notice