Noble M12 heavily modified
Discussion
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I promised a clip with drive by... I made this quickly, there is 3 dyno runs starting low and working up to the big run.
There are 2 drive bys... I was pulled by the noise police on the first tine out so I wasnt allowed to use full throttle keeping my wastegates shut and thus the car quite... the first drive by is with me on 3/4 throttle with car quite and the second was my last few laps so was at full chat
I will be getting a silencer made for the wastegates so I can fit them on track... not needed on the road as the wastegates only open on full throttle above 5000rpm and if Im doing that on the road Im not worried about noise
My driveshaft issue turned out to be the problem I though it would be but didnt ruin my day... I have a shorter one on order and definatelly need it prior to my next track day.
http://www.youtube.com/watch?v=s_ltQiy8nII
There are 2 drive bys... I was pulled by the noise police on the first tine out so I wasnt allowed to use full throttle keeping my wastegates shut and thus the car quite... the first drive by is with me on 3/4 throttle with car quite and the second was my last few laps so was at full chat
I will be getting a silencer made for the wastegates so I can fit them on track... not needed on the road as the wastegates only open on full throttle above 5000rpm and if Im doing that on the road Im not worried about noise
My driveshaft issue turned out to be the problem I though it would be but didnt ruin my day... I have a shorter one on order and definatelly need it prior to my next track day.
http://www.youtube.com/watch?v=s_ltQiy8nII
Screamer pipes are effectivelly a separate exhaust system....on a turbo car you have a wastegate per turbo and this opens to allow exhaust gasses to bypass the turbo otherwise the turbo would massivelly overboost and overspin destroying itself and engine in the process.
usually these wastegates are built into the turbo and simply bypass the exhaust gasses directly back into the exhaust in the same place as all the other gasses.
Mine is different in that I fitted external wastegates instead of my turbo having them built in, I also have 2 wastegates for the single turbo... and I have then routed them direct to the rear of the car so these are the two extra little pipes you see. This means that when the turbo really starts to spool up the wastegates open and gasses will be bypassing not only the turbo but also the entire exhaust system and silencer.... effectivelly under full boost/throttle my engine becomes unsilenced.
Also means that low boost is louder than high boost as the wastegates vent more of the exhaust gasses to restrict the turbo to 0.6bar rather than the 2-3bar its wanting to produce.
The flames are simply fuel going into the hugelly hot exhaust and igniting causing flames... the rev limiter cuts spark but some fuel still goes in and goes straight into the exhaust... the manifolds get so hot that despite being 2mm thick stainless they go beyond red and become almost translusent, quite amazing to look at actually.
My eventual goal is to run anti lag and launch control... this means we actually deliberatly overfuel the car during gearchanges so that the flames keep the turbo spinning... its amazing to hear and see although very destructive to the turbo and can make exhaust temperatures rise to silly levels.
But lets be hounest... it would be rude not to
usually these wastegates are built into the turbo and simply bypass the exhaust gasses directly back into the exhaust in the same place as all the other gasses.
Mine is different in that I fitted external wastegates instead of my turbo having them built in, I also have 2 wastegates for the single turbo... and I have then routed them direct to the rear of the car so these are the two extra little pipes you see. This means that when the turbo really starts to spool up the wastegates open and gasses will be bypassing not only the turbo but also the entire exhaust system and silencer.... effectivelly under full boost/throttle my engine becomes unsilenced.
Also means that low boost is louder than high boost as the wastegates vent more of the exhaust gasses to restrict the turbo to 0.6bar rather than the 2-3bar its wanting to produce.
The flames are simply fuel going into the hugelly hot exhaust and igniting causing flames... the rev limiter cuts spark but some fuel still goes in and goes straight into the exhaust... the manifolds get so hot that despite being 2mm thick stainless they go beyond red and become almost translusent, quite amazing to look at actually.
My eventual goal is to run anti lag and launch control... this means we actually deliberatly overfuel the car during gearchanges so that the flames keep the turbo spinning... its amazing to hear and see although very destructive to the turbo and can make exhaust temperatures rise to silly levels.
But lets be hounest... it would be rude not to
in the best possible way andygtt said:
Put the car on the rollers yesterday... we capped power and torque to protect the gearbox as we dont know how much it will take.
Made 626bhp and 532ftlb... peak boost is at 7500rpm to keep power right till redline so plenty of room to increase the power if I decide to push the boundaries later.
http://www.youtube.com/watch?v=WWMV2nOyGZ8
whats the thrap at the end of the vid? going supersonic?Made 626bhp and 532ftlb... peak boost is at 7500rpm to keep power right till redline so plenty of room to increase the power if I decide to push the boundaries later.
http://www.youtube.com/watch?v=WWMV2nOyGZ8
"must read the whole post before replying"
Edited by slipstream 1985 on Thursday 12th May 15:47
andygtt said:
My eventual goal is to run anti lag and launch control... this means we actually deliberatly overfuel the car during gearchanges so that the flames keep the turbo spinning... its amazing to hear and see although very destructive to the turbo and can make exhaust temperatures rise to silly levels.
But lets be hounest... it would be rude not to
Can't get more PH than that!But lets be hounest... it would be rude not to
Right winter is here and so the car is in line for a new list of Mods... after all be rude not to.
So this winter I am doing the following and will follow up with pictures as it goes.
1. re-fit tripple plate clutch after lightening the flywheel even further, balance entire assembly
2. fit all new heads slightly more breathed on than my current mountune modded ones.
3. play around with ceramic coating of the heads and pistons (not doing the tops of the pistons though).
4. Fit motec M800 ecu
5. Inconal exhaust manifolds (wow these are expensive)
6. wrap petrol tank and everything fuel related
7. Fit all new dash after covering in leather (re-modeld a spare I had)
8. new seats
9. New stack dash with alerts to replace all the clocks, includes boost, fuel pressure etc.
10. new wheels saving 9kgs in weight
11. fit new rear clip with all the body mods (cant wait for this to be finished)
12. colour change
13. water/methanol injection
14. sensors on everything into the ECU from fuel pressure/temp to EGT
15. remap to multiple settings ie road/rack, wet/dry, high low... happy button overboost
16. New private plate
17. new front lights to my own design (leds etc)
18. lightweight battery
maybe's include if the above hasn't bankrupt me
1. fly by wire throttle body
2. new inlet manifold with jenvey trumpets
3. traction control
4. double din sat nav (already moved the stereo to the center console)
the goal is a real 700bhp and a 50kgs reduction in weight (to get a dry weight under 1000kgs) and a move towards a much safer engine management with option to do traction control and anti lag as mentioned earlier in the thread.
Since the last updates I did have a silencer made for the wastegates so that it passes drive by's on track... this worked a treat but is removable so I can have straight through on the road as it does muffle the wonderful noise they make lol
So this winter I am doing the following and will follow up with pictures as it goes.
1. re-fit tripple plate clutch after lightening the flywheel even further, balance entire assembly
2. fit all new heads slightly more breathed on than my current mountune modded ones.
3. play around with ceramic coating of the heads and pistons (not doing the tops of the pistons though).
4. Fit motec M800 ecu
5. Inconal exhaust manifolds (wow these are expensive)
6. wrap petrol tank and everything fuel related
7. Fit all new dash after covering in leather (re-modeld a spare I had)
8. new seats
9. New stack dash with alerts to replace all the clocks, includes boost, fuel pressure etc.
10. new wheels saving 9kgs in weight
11. fit new rear clip with all the body mods (cant wait for this to be finished)
12. colour change
13. water/methanol injection
14. sensors on everything into the ECU from fuel pressure/temp to EGT
15. remap to multiple settings ie road/rack, wet/dry, high low... happy button overboost
16. New private plate
17. new front lights to my own design (leds etc)
18. lightweight battery
maybe's include if the above hasn't bankrupt me
1. fly by wire throttle body
2. new inlet manifold with jenvey trumpets
3. traction control
4. double din sat nav (already moved the stereo to the center console)
the goal is a real 700bhp and a 50kgs reduction in weight (to get a dry weight under 1000kgs) and a move towards a much safer engine management with option to do traction control and anti lag as mentioned earlier in the thread.
Since the last updates I did have a silencer made for the wastegates so that it passes drive by's on track... this worked a treat but is removable so I can have straight through on the road as it does muffle the wonderful noise they make lol
RobCrezz said:
andygtt said:
I already have the Motec M800 so money already spent and not looked at anything else ... its interfaced to the stack dash already so i'm not going to change
Ah ok, its very good anyway. Apparently they have just released all the extra add on features for free now?Gassing Station | Readers' Cars | Top of Page | What's New | My Stuff