Tim Radley

I've a friend of a friend who spent £250,000 on some jewelry for a girl he met in a night club.  He didn't blink at that and the money is effectively thrown away.  I see some girls spend £4000 on fake tits and they are ugly - again a total waste of money.  I've another customer who spent £125,000 on a non-running ex-motogp bike just to hang it on his living room wall.  People can do what they like with their money.  Knowing how many of these guys think, at least half the enjoyment comes from actually building the car.  Better to have a year or more of fun creating something that some of the previous examples i've given ;)

bits have been getting some paint today, will be left to cure over the weekend then polished up ready for Tues/Weds bearing no complications.  A few pictures of how it's getting on (can't be arsed to put them all up lol)

 

He has short arms like a t-rex and struggles to turn into corners

He has short arms like a t-rex and struggles to turn into corners

I watched world time attack this morning.  Most of the cars were running dry sump.  Nobody looked like they had been deep fried, not even the V-Sport GT86 that was running the same sump Nigel and I have bought.
The stock sump and oil supply aren't sufficient for my needs nor those of Nigel so we had no choice but to buy a proven system.
I'm more worried about 12 bar of oil pressure than it leaking

DFV is a great choice as long as you aren't after making it into a proper full-on race shock later on.  As it can't be made that.  It's a great road and track shock and not loads of confusing adjustment so a very good choice.  But we are talking small amounts between best and not so good.  When 0.2 seconds gives you 8 places up the grid it's important.  Enthusiast not so much

Indeed, the polar opposite of you describe being a gas turbine which makes huge power but only likes operating over a narrow speed range.
 
Without a torque curve for the twin-charged setup vs supercharged or turbocharged only its difficult to begin to make an objective assessment, but my gut feeling is that twincharged won't be much quicker. My rationale being the extra torque from the supercharger will be at low revs, so would only be of benefit on initial acceleration from rest when you'll likely be traction limited anyway (really need 4wd to exploit it - see Lancia Delta S4!). Once you're rolling then even with relatively long ratios you could easily stay in the region of highest torque.
 
On the flipside of that you may be contemplating a dustbin sized turbo for huge peak power figures, and without a complicated (i.e. expensive!) anti-lag system you're expecting to rely on the supercharger boost to spool up the turbo this side of christmas? One dimensional graphs of dyno plots being useless to assess transient effects.

Hi Nigel,
 
Mine is geared for 156 in 6th at 8,000 rpm.
 
We find that Toyota sprint requires around 145mph top speed but that was in the Celica GT4X but that was running a good 650 - 700bhp.
 
Here is a screenshot of my ratios with 4.4 final drive and 1.0 reduction gear vs a stock car
 

 
also check out our video from woodbridge, https://youtu.be/WNYrtiYfDNk
 
Although I'm not using 6th at this circuit I am not running full power yet!
 
Its also nice to be able to short shift up a gear especially in difficult conditions (wet / slippy / bumpy)  
 
I think my ratios are about perfect for me
 
Best Regards
Adrian

When I look at those discs I can't help thinking BBK

Hi Tim, the factory have a summer holiday looming so lead time is 2-3 months at the moment. 
Regards
Adrian

Agreed,  use a PD blower after a large turbo  to pull through the turbo and multiply the boost  when the turbo comes on song for this t
 
for this to work though you'll need a really good intercooler setup for the SC as it'll be seeing hot air from the turbo when that comes on boost
 
that is unless you run another intercooler for the turbo
 
ie ; air comes into turbo - out to intercooler - into throttle then into SC - out through that intercooler - into engine
You'd certainly want a water air setup for the SC at least to keep the air path short and so avoid lots of pipework
 
I look forward to seeing this , with a built bottom end and a GT30 or similar turbo you'd get about 500 bhp and with no lag

Several reasons:-
You are further into your warranty period and at a granny pace so by the time you thrash it they've reduced their exposure
You have got used to the power and less likely to crash it so they can't get sued for selling dangerous cars
If anything is wrong with the build of the engine or chassis then it's less likely to cause as much damage if you are at 7500rpm or 140mph than 3000 and 60mph
 
Mostly i'd sum that up with 'minimising liability' from the manufacturer
 
The only thing i will say for thrashing them is i've always done it and never had one go bang.  If it was because the manufacturer was concerned it would go bang then i'd argue they weren't very confident in their own build quality.
 
Rings half bed in rotating the engine by hand and fully after the first few minutes of running.  I've stripped fresh built engines before they've run, after 5 minutes, 20 minutes, 1 hr and observed the differences.  After 5 minutes rings look the same as they do at 4 hrs.

They say that because people are inherently stupid. 
 
I've done 64K in my car, it uses no oil and makes good power. 
 
Whilst I did limit the rpm to a point, I made sure that even when it only had a few miles on it, that I gave it full throttle in second and lifted off to seal the rings properly. I'd typically go up to 4500rpm or so then lift off and let it slow down under engine braking. 
 
I also varied the revs a lot and built up the rpms until 1000miles. You need to load the engine, but never, ever labour it. 

I build maybe 100 engines per year and strip a lot of those on regular intervals so get to observe the wear.  My running in procedure consists of 2 heat cycles.  Engines that come in that have been "pussied" generally have excess build up of fuel gunk and glazed bores.  I've never ever ran an engine in and no idea why manufacturers say to do this when they run them hard on the test bench before they go in the car.  My GT86 was on a trackday 3 days after it came out of the showroom and i've pulled it apart twice since.  It's still like new inside

The dyno chart proves out what is well known.  Light isn't always best in certain areas.  Look at any F1 crankshaft and you will find they use heavy metal inserts to increase weight, same for a MotoGP crank.  This is done for very good reason.  Lightweight parts can lack torque stability.  On/off throttle control can be bad.  If you want to sit blipping your throttle when parked up then yes lightweight parts can seem better but the reality is the heavy parts will accelerate faster in this scenario that the car ever does when driving.  Lot of junk parts in the aftermarket so be careful.

Lightwight pulley has 5th order at 7k rpm and 6th order vibaration at 6krpms at >0.2 deg vibration angle is not good!
 
Fluidampr has more vibations in the 5th-7th order in the higher rpms. I dont care if they are a small angle, they are still much bigger than the stock damper!
 
You can use these graphs to determine total power of the vibrations, and I am sure by looking at those graphs the stock damper will win.
 
Toyota/Subaru engineers have done a great job!

The point you have to remember is that the stock crank pulley would not have a harmonic damper if it did not need it.
 
You take your chances, your engine etc. 
 
Until you've done a decent amount of mileage with a lightweight pulley it is difficult to tell if it's an issue. Low mileage race cars don't really give you that info. 
 
I must admit, I see no appeal in being a guinea pig.

of course red is the fastest, why do you think Ferrari's are red?

Tim,agreed black is very very fast,but not nearly as fast as the reds

Guys a V8! will spoil the awesome handling of these lovely little pocket rockets it is like fitting V8 into a S13/14/15 one way to make a car to front heavy!

A V6 yes can be fitted far enough back in the chassis to keep the awesome handling!

I know a couple of motors that will fit nicely as well.

Hi Tim nice to see you over here.