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Hot!MR2 Lap times. Now with leaderboard

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roryh
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RE: MR2 Lap times 2009/05/04 23:21:53 (permalink)
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Thanks - In my last session I rekon I was on for a sub 1.50 but got baulked by a much slower car on the run up to turn 11 - I should have popped the lights as soon as I left the hairpin cause he didn't pick me up until too late - but anyway maybe next time.

How did you go out there today?
#46
barflairer
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RE: MR2 Lap times 2009/06/04 09:30:51 (permalink)
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It was my first time tracking the car so I'll be honest and say I did pretty bad. I think I did pretty much everything wrong to begin with. Coasted into corners, too soft on the brakes, too late braking, not using enough of the road and not looking far enough.

After a few tips from the instructors, they said I had improved dramatically by the end of the day so I can only go up from here. Learnt a lot from the advance guys yesterday so keen to meet some of the other forum members here that track their cars.

PS - Had a bit of a hairy moment when I lost it on corner 4 and a very expensive track maserati was flying up behind me.
#47
roryh
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RE: MR2 Lap times 2009/06/04 10:24:40 (permalink)
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Great to see another MR2 enthusiast getting their car on track!! You have to start somewhere and all seat time builds experience so well done.

It is likely there will be a few of us back at EC on the 22nd of this month.
#48

barflairer
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RE: MR2 Lap times 2009/06/04 17:51:10 (permalink)
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22nd is a Wednesday so I have to go to work. A bit too soon for me to track the car again anyways but if it was the weekend I would have just came down to watch and have a chat.

Will definitely keep my eye on these race threads and hopefully can join some of you guys on the track and learn from your experience.
#49
B24
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RE: MR2 Lap times 2009/07/04 07:23:11 (permalink)
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Well the MR2 should be able to see a mid 1.40 time(1.44-47) at EC on a warmer day as it was cool and from what a few friends said, it was lacking grip.
Rory, your car did look good through T1 with very little movement in the chassis or unsettled suspension from where I was standing.The youtube footage was great. Very smooth driving, looks like you could have cruised around for hours at that speed without any problems!

The sporting car festival is on at Bathurst this weekend for those interested in seeing about 400 race spec sportscars hit the mountain. I dont know if any MR2 will be there but still a great place to get some ideas for budding race car builders.
#50
B24
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RE: MR2 Lap times 2009/04/20 22:14:34 (permalink)
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I was looking at natsoft for timing results of the evo/wrx meet over the weekend at EC. Over half the field managed sub 1;50 times, with many in the low 1:40's. Has anyone managed these sorts of times?
I found a engineer who built the Bathurst 12hr MR2 in the 90's. He did mention that over the top of the Mountain the car had a 'spooky feeling' on the high speed cornering. I have been pondering on why this happens and how to fix it.
Any thoughts on this aspect of the MR2?
#51
evo65m
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RE: MR2 Lap times 2009/04/20 23:05:08 (permalink)
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evo/wrx day all the cars under 1.50 all have min 240kw atw's. Cam Dyle's evo that did a 1.40 has 460kw at all 4 wheels. I know that there is a 1.47 in my mr2 with more practice and i have 160kw atw. when we put some balls into it i think a 1.42 - 1.45 is quite achievable and will be reliable
#52
roryh
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RE: MR2 Lap times 2009/04/21 09:15:35 (permalink)
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the key will be to get as much weight out as possible and get the tyres working properly. My tyre temps indicate that the suspension setup is not correct and I am running too much camber for such soft springs and shocks. Therefore my total grip is down which would indicate there may be half a second or so just in mechanical grip to be found. As for the "spooky feeling" - I think you'll need to completly rose joint all the suspension to help this. Phoenix Power did a full set of these but I do not know if they are available any more.
#53
B24
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RE: MR2 Lap times 2009/04/24 20:11:23 (permalink)
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460kw is an amazing amount of power for a circuit car but like wet toilet paper, it wont last long! Its close to 600hp at the wheels and who knows at the flywheel. Clearly set up has more to do with making a car very quick.
Here is the link to lap records at EC. http://www.eastern-creek-raceway.com/lap_records.htm
As you can see on this page, no one has a 600hp atw 4wd. The R32 has less power and plenty of restrictions and managed a 42. The startlet did a 45 but is a absolutely crazy car. It had a 2ltr Vtec squezed in the front of it. It was comparable to a SW20 with a 600hp Toyota 4.0ltr V8 in it! Now theres a thought...

240 atw is still plenty power plus they are a later model car with 4wd so I guess you have to expect this. Nissan S14 is a better comparison to an MR2 as they are from the same era, 2.0Turbo, well balanced car .

I agree with weight reduction. Remove as much negative weight as possible then replace with positive weight. Cage, bracing, cooling systems etc. I will remove everything possible in the front of the car to lose 50kg then put 6-7kg of bracing of the chassis and suspension points. Same for the rear.
I removed every bolt not used which will make up for all the seam welding through out the car. I sure I have removed more than I added as a matter of fact. Just a thought.

I found Lexan for $180 a sheet(2.4 x 1.2 x 3mm) if anyone is interested. 2mm is also available. Im picking it up next week.

#54
evo65m
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RE: MR2 Lap times 2009/04/25 15:59:42 (permalink)
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Thought i would post Cam's lap at eastern creek he has set the car up for time attack only hence why so much power
http://www.youtube.com/watch?v=0iJ0d6zcrtE
#55
B24
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RE: MR2 Lap times 2009/04/25 18:29:39 (permalink)
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I just watched Cams laps. Great piece of footage.
The engine sounds absolutely brilliant. What is the spec on the car?

It is certainly a goal to work towards
#56
evo65m
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RE: MR2 Lap times 2009/04/25 22:14:53 (permalink)
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Cam's car is all carbon and lexan would weigh 1200kg runs a dog box and 2.3 stroker and has 439.5kwatw's. it is the goods but plenty of money has been thrown at the beast to get it where it is and a lot of heart ache but it all came together for him last week. Thumb's up in my book as his not a pro driver but a Accountant
#57
Vinnny
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RE: MR2 Lap times 2009/02/05 13:14:01 (permalink)
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sw20 non turbo,

No mods at all.. except for a removed spare wheel.

W rated tyres.... (pretty crap brand though)

1.17.1 wakefield park.
#58
surok
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RE: MR2 Lap times 2009/03/05 15:33:13 (permalink)
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nice, how were you timing that?
#59
Vinnny
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RE: MR2 Lap times 2009/03/05 19:37:07 (permalink)
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girlfriend on the stands lol.

So yeah. give or take a second. i was doing 1 17s pretty consistantly though. (except my cool off laps)
#60
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