Titanium valves - How much HP ?
Discussion
That 0-100-0 data. What an interesting set of figures..
Even though it is rather low sample rate, it seems to show you were getting wheelspin/loss of grip up to 50mph! It was always suggested that a better surface would have given a better result.
Did the system record engine revs as a dataset?
Less than 400 effective hp just before the gearchange at about 60mph.
OK start flaming now!
Even though it is rather low sample rate, it seems to show you were getting wheelspin/loss of grip up to 50mph! It was always suggested that a better surface would have given a better result.
Did the system record engine revs as a dataset?
Less than 400 effective hp just before the gearchange at about 60mph.
OK start flaming now!
I did the same test on the same track (ie brunters) and I can confirm it is a slippery a F$%$......
With a mear 526bhp AS unit I was launching at 2000rpm and waiting for the wheelspin to stop before I could floor it. Otherwise it would wheelspin all the way to 60mph in 1st gear and only do a 4.2second 0-60.
At the drag strip I could launch at 4000rpm due to the greater grip. I'm still waiting to find out what times GMAN does at the strip, I recon he will be mid 10's at worst.
With a mear 526bhp AS unit I was launching at 2000rpm and waiting for the wheelspin to stop before I could floor it. Otherwise it would wheelspin all the way to 60mph in 1st gear and only do a 4.2second 0-60.
At the drag strip I could launch at 4000rpm due to the greater grip. I'm still waiting to find out what times GMAN does at the strip, I recon he will be mid 10's at worst.
Don't waste your money on titanium valves. Best bet is to put lighter pushrods and lightweight solid lifters. Use a flat tappet lifter. Switch to a single valve spring design. Switch to a lighter weight rocker if you can find one. Push rods account for about 35% of valve train interia as this is why overhead cams are better on high RPM applications.
Ti valves can cause spalling on bronze alloy exhaust valve guides, so you must be carefull when selecting. Consult your valve manufacturer about guide compatibility.
Ti valves are for the most extreme high RPM applications and you can loose engine reliability with these. There's debate in the race world about how usefull they really are. A simple stainless valve works as well and will be 100% compatible with bronze guides.
Ti valves can cause spalling on bronze alloy exhaust valve guides, so you must be carefull when selecting. Consult your valve manufacturer about guide compatibility.
Ti valves are for the most extreme high RPM applications and you can loose engine reliability with these. There's debate in the race world about how usefull they really are. A simple stainless valve works as well and will be 100% compatible with bronze guides.
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