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2015-01-24

Rear bump steer

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Bump/roll steer check on the rears for the first time, using a laser level on the brake disc and a mirror. I don't know why I haven...
2015-01-02

Airfoil behind roll cage CFD analysis

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Does an airfoil generate downforce when placed behind a roll cage? Since I'm starting to get along with the CFD analysis software I d...
2014-12-25

Engine bay undertray aerodynamics

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Some time ago I started to do some CFD analysis to see if I could do any simple changes that improved the aerodynamic properties of th...
2014-10-18

MOT, autumn and nothing much

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The yearly MOT was a bit different. First attempt they refused to inspect the car as the guy said he'd not manage to get into the car...
2014-09-21

My wheel fell off on a trackday

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At 137 km/h coming into a long right turn, my inner rear wheel fell off. A loud clonk and I could see how the inner rear wheel was bypas...
2 comments:
2014-08-26

New rims with stickers on

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New 13" rims from Force Racing, 7" and 9" wide with brand new Dunlop slicks - "stickers". I bought the rims di...
2014-08-21

Gearbox disaster

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My gearbox failed with a bang on on the King of Mantorp TA-event . Totally unexpected on the day's last cooldown lap. Looking at the ...
2014-07-06

TimeAttack - "King of Mantorp"

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Valtonen Motorsport RX-8 Normally I don't like to compete but somehow I participated a Time Attack competition this weekend. S...
2014-07-02

Intake cone filter and air pressure

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The Pipercross airbox I bough was supplied with a built in air-filter rated up to 200 hp. As don't want to strangle my engine I now...
2 comments:
2014-06-25

Attempt to redirect exhaust noise

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As I previously wrote my noise levels are now down to 94-96 dbA on the intake side and 101 dbA on the exhaust side. In an attempt to re...
2014-06-22

Intake airbox

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As I wrote in the previous post the track noise regulations in Sweden has become much harder lately. The current limit is 95 dBA drive-by...
2 comments:
2014-06-14

Raceco silencer

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The track noise regulations in Sweden has become much harder lately. The current limit is 95 dBA drive by measured from a 10 m distance. ...
2014-05-30

Rear diffusor and front splitter inspiration

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I more or less gave up on my CFD simulations . At least for a while. I could not get consistent results and the obstacles were just too many...
2 comments:
2014-04-07

Aerodynamics - CFD simulations

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After some vacation reading of the book " Race car aerodynamics " I have had lots of thoughts of how to improve the car's a...
2014-03-10

Fuel system with Swirlpot

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It was not long ago  I uprated my fuel pump and since then I only used my car once. But I never felt satisfied with the new system. I fe...
2014-01-06

Oil filler cap lock

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It has happened more than once that the oil filler cap jump loose and spew oil on the exhaust primaries. Hopefully this will fix it.
4 comments:
2014-01-04

Oil temperature sender

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I'm reading a book right now that among other things has a lot to say about oil. One of the things it says is: "An engine should ...
2 comments:
2013-12-23

Race Technology DL1 + Dash4Pro

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Early Christmas this year when I got myself a Race Technology DL1 Club logger and Dash4Pro dash to go with it. I've been using a ...
2013-11-02

Fuel filter

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MANN WK612/2 or MAHLE KL158. Available in your local car parts store. Must be one of the parts on this car that is hardest to remove,...
2 comments:
2013-10-29

Uprated fuel pump

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In my search for a more robust fuel system the time has come to the fuel pump. According to Cosworth a 280hk Duratec engine need 1.4L/m...
2013-10-06

Tierp Arena

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Great day! Great fun racing with some other sevens. Probably the last outing for the season. My car is both wonderful and terrifying a...