[MJ80.]

Was a 9.5sec car traps 140mph throttle got stuck wide open down the straight in its race and just couldn't stop, glowed the breaks but in a car like that your not stopping... so tragic that both lost thier lives.

Was great to meet you Ken your car is a weapon and flogged me, ill work on a way to upload and share the vids on here.

[Coupes33]

Originally Posted by MJ80.

Was a 9.5sec car traps 140mph throttle got stuck wide open down the straight in its race and just couldn't stop, glowed the breaks but in a car like that your not stopping... so tragic that both lost thier lives.

Was great to meet you Ken your car is a weapon and flogged me, ill work on a way to upload and share the vids on here.

Same here Matt. Yes it would be great if you can upload the videos.

[MJ80.]

[Coupes33]

Great work Matt. Thanks for putting that on the forum.

[Coupes33]

Went out to Willowbank last night and had 3 runs. All of them were 11.4s for various reasons.

On the first run, I had my best 0-60’ time with a 1.659s but on the change from 1st to 2nd the boost dropped down to zero for some reason. With these turbos, it certainly revs out quicker and further which caught me out on this run and I over revved the engine to 7,300rpm which is probably why the boost dropped off. It has triggered some threshold no doubt. Then at half track the engine light came on and power was reduced. The Codes that came up were 29D2 – misfire Cylinder 6, 2AAF – Fuel Pump Plausibility and 2DED – Power Management, Closed-circuit current violation. Cleared all of these while driving back to the pits. Below is the Datazap log of that run which includes the burnout. Timesheets are also attached.

https://datazap.me/u/coupes44/willow...og=0&data=3-21

On the second run, the launch seemed ok but a 1.892s proves it wasn’t. It wasn’t until I looked at the datalog that I saw why. I must have changed from 1st to 2nd gear at just over 3,000rpm which is a mystery to me as I would swear I didn’t. However, the log doesn’t lie. Also during the latter end of this run, the oil temperature symbol came up on the dash and power was reduced somewhat. Still managed a 127.16 mph terminal speed which was the best I had done to that point. The oil temperature issue was due to it being a hot day 26 C and doing this run straight after the first with no time for cooling down. No codes came up on this run.

https://datazap.me/u/coupes44/willow...og=0&data=3-21

On the third run, the temperature had dropped to 23C. On this run, I did a poor burnout which resulted in some wheel spin in 2nd gear and a very poor 0-60’ time of 1.988s. No codes came up on this run and the highest speed was recorded at 128.38 mph.

https://datazap.me/u/coupes44/willow...og=0&data=3-21

All of the runs were somewhat stuffed due to the crappy driver errors. I positives from the night were best 0-60', highest top end speed and my modified coolant expansion tank hung together without issue at high temperatures. I thought the IATs were very good considering the hot weather. I will wait until winter before running it again and install the M3 diff and axles. I will need to look at the diff gear ratio as well because on the last run where I managed 128mph, I had to change into 5th gear about 50m from the line. Going into overdrive doesn't help lower the times. Also, Duck was no show on the night. The time sheets are below.

[Aus335iguy]

That's a pretty good effort coupes. I'd be really happy with those times - Are you ?

[Coupes33]

Originally Posted by Aus335iguy

That's a pretty good effort coupes. I'd be really happy with those times - Are you ?

Not really as I was getting consistent 11.3s with the old RB turbos, Cobb AP custom tune and OEM outlets. With a good 0-60' time, no codes and no driver stuff ups, I believe a 11.1s run was achievable. In temperatures 10C lower maybe a 10.9s.

[tawfeeqh]

keep at it coupes with some better reaction times and cooler weather i reckon loooow 11s are possible. The RB Evos certainly make power. i was pulling 133.5mph with the hexon rr700s running 24 psi and they were stock housing turbos. You are nearly close to 130mph. maybe a few map revisions you can gain an extra few miles per hour and dip into the times you are after.

i will hit the track again next year now

[Coupes33]

Originally Posted by tawfeeqh

keep at it coupes with some better reaction times and cooler weather i reckon loooow 11s are possible. The RB Evos certainly make power. i was pulling 133.5mph with the hexon rr700s running 24 psi and they were stock housing turbos. You are nearly close to 130mph. maybe a few map revisions you can gain an extra few miles per hour and dip into the times you are after.

i will hit the track again next year now

What gear were you in when you went across the line at 133mph Tawfeeqh? I am finding that I cannot quite get to the line in 4th and need to change into 5th. Ideally, it would be better to have slightly larger diameter tyres but this would cause other issues with fitment in the guards. Having achieved a 1.65s 0-60', I am happy with the traction from these tyres. Cooler weather will certainly help in getting my times down. Whether a 10.9s time is possible, I am not sure. Find out next year.

[JB4-335]

Originally Posted by Coupes33

Went out to Willowbank last night and had 3 runs. All of them were 11.4s for various reasons.

On the first run, I had my best 0-60’ time with a 1.659s but on the change from 1st to 2nd the boost dropped down to zero for some reason. With these turbos, it certainly revs out quicker and further which caught me out on this run and I over revved the engine to 7,300rpm which is probably why the boost dropped off. It has triggered some threshold no doubt. Then at half track the engine light came on and power was reduced. The Codes that came up were 29D2 – misfire Cylinder 6, 2AAF – Fuel Pump Plausibility and 2DED – Power Management, Closed-circuit current violation. Cleared all of these while driving back to the pits. Below is the Datazap log of that run which includes the burnout. Timesheets are also attached.

https://datazap.me/u/coupes44/willow...og=0&data=3-21

On the second run, the launch seemed ok but a 1.892s proves it wasn’t. It wasn’t until I looked at the datalog that I saw why. I must have changed from 1st to 2nd gear at just over 3,000rpm which is a mystery to me as I would swear I didn’t. However, the log doesn’t lie. Also during the latter end of this run, the oil temperature symbol came up on the dash and power was reduced somewhat. Still managed a 127.16 mph terminal speed which was the best I had done to that point. The oil temperature issue was due to it being a hot day 26 C and doing this run straight after the first with no time for cooling down. No codes came up on this run.

https://datazap.me/u/coupes44/willow...og=0&data=3-21

On the third run, the temperature had dropped to 23C. On this run, I did a poor burnout which resulted in some wheel spin in 2nd gear and a very poor 0-60’ time of 1.988s. No codes came up on this run and the highest speed was recorded at 128.38 mph.

https://datazap.me/u/coupes44/willow...og=0&data=3-21

All of the runs were somewhat stuffed due to the crappy driver errors. I positives from the night were best 0-60', highest top end speed and my modified coolant expansion tank hung together without issue at high temperatures. I thought the IATs were very good considering the hot weather. I will wait until winter before running it again and install the M3 diff and axles. I will need to look at the diff gear ratio as well because on the last run where I managed 128mph, I had to change into 5th gear about 50m from the line. Going into overdrive doesn't help lower the times. Also, Duck was no show on the night. The time sheets are below.

Attachment 1736861

1.65 short time is very impressive. Well done mate. That was definitely gonna be your 10 second pass.

Ahhh the joys of drag racing where something is almost likely to go wrong. As long as you don't break anything and get to drive home then it's s good night.

[tawfeeqh]

Originally Posted by Coupes33

What gear were you in when you went across the line at 133mph Tawfeeqh? I am finding that I cannot quite get to the line in 4th and need to change into 5th. Ideally, it would be better to have slightly larger diameter tyres but this would cause other issues with fitment in the guards. Having achieved a 1.65s 0-60', I am happy with the traction from these tyres. Cooler weather will certainly help in getting my times down. Whether a 10.9s time is possible, I am not sure. Find out next year.

I cross the line in 4th gear everytime. Slips attched. And I meant improved 60ft not reaction time lol, although a 1.65s is pretty solid best ive managed is 1.73[IMG]undefined[/IMG]

[tawfeeqh]

Slip

[Coupes33]

Originally Posted by tawfeeqh

I cross the line in 4th gear everytime. Slips attched. And I meant improved 60ft not reaction time lol, although a 1.65s is pretty solid best ive managed is 1.73[IMG]undefined[/IMG]

Sorry, I cannot read the time slips even when I enlarge them. Tawfeeqh have you got any Datazap logs of your runs so that I can compare with mine to see why I am running out of revs in 4th gear.

[Coupes33]

Originally Posted by JB4-335

1.65 short time is very impressive. Well done mate. That was definitely gonna be your 10 second pass.

Ahhh the joys of drag racing where something is almost likely to go wrong. As long as you don't break anything and get to drive home then it's s good night.

Yes, it is always good to be able to drive home at the end of a night at the drags with no additional noises.

[tawfeeqh]

Originally Posted by Coupes33

Sorry, I cannot read the time slips even when I enlarge them. Tawfeeqh have you got any Datazap logs of your runs so that I can compare with mine to see why I am running out of revs in 4th gear.

Few logs from the runs. Yeh not sure why the pics are loading blurry.

https://datazap.me/u/tawfeeqh/calder...zoom=2897-3117

https://datazap.me/u/tawfeeqh/heathc...20&zoom=37-301

[101Duck]

Yeah i was a no show.

I went to a private skid day at Queensland raceway Wednesday morning.

Let's just say after 18 months of hell the motor has said no more. Suspect cracked piston. I'll get my forged engine assembled next couple weeks and smash it.

Bought time it let go haha. Also it rolled out 765hp on 32psi Tuesday night. So for a high km engine its doin pretty well!

[MJ80.]

Fark thats so heavy...

[101Duck]

nothin heavy about it. in the last month i'd turned off the knock detection and did a few other severely unsafe things with the tune up.

basically i set that bitch to kill. wait till it has pistons and rods that can cop it, it'll be a grand old time.

also jack went 1.48 to the 60ft tonight. that's a low 9 all day, but CEL at 660ft aborted that run.

he's gonna send it one day soon. powerglide to the front

[Aus335iguy]

Originally Posted by 101Duck

nothin heavy about it. in the last month i'd turned off the knock detection and did a few other severely unsafe things with the tune up.

basically i set that bitch to kill. wait till it has pistons and rods that can cop it, it'll be a grand old time.

also jack went 1.48 to the 60ft tonight. that's a low 9 all day, but CEL at 660ft aborted that run.

he's gonna send it one day soon. powerglide to the front

You make me chuckle duck.
I secretly want an Aussie to be the first to crack a 9. Stuff the septics ...Which one of us is jack? That's a stonkin 60'

[Coupes33]

Originally Posted by 101Duck

Yeah i was a no show.

I went to a private skid day at Queensland raceway Wednesday morning.

Let's just say after 18 months of hell the motor has said no more. Suspect cracked piston. I'll get my forged engine assembled next couple weeks and smash it.

Bought time it let go haha. Also it rolled out 765hp on 32psi Tuesday night. So for a high km engine its doin pretty well!

Sorry to hear that your engine finally gave up the ghost Dan. It probably isn't totally unexpected as you knew at some stage this would happen with the boost levels and power output of the engine. It will be great to see what you can extract from an engine with a strengthened bottom end.

[Coupes33]

Originally Posted by 101Duck

nothin heavy about it. in the last month i'd turned off the knock detection and did a few other severely unsafe things with the tune up.

basically i set that bitch to kill. wait till it has pistons and rods that can cop it, it'll be a grand old time.

also jack went 1.48 to the 60ft tonight. that's a low 9 all day, but CEL at 660ft aborted that run.

he's gonna send it one day soon. powerglide to the front

That is a great 0-60' time from Jack. What size tyres is he running to hook up like that? My mate with a 65 Mustang did 0-60' times the same as that when he did a 10.2s run and he was lifting the front tyres off the ground with a heavy V8 in the front. He should certainly be able to get 9s runs with a launch like that.

[Coupes33]

Originally Posted by tawfeeqh

Few logs from the runs. Yeh not sure why the pics are loading blurry.

https://datazap.me/u/tawfeeqh/calder...zoom=2897-3117

https://datazap.me/u/tawfeeqh/heathc...20&zoom=37-301

What time and speed did you get Tawfeeqh for the first datazap log and what size tyres do you use at the drags? I have compared my last run above with this datazap log with the following results.

Revs in the gears- 1st Taw 6,715, Coupes 7,198. 2nd- Taw 6,668, Coupes 6,658. 3rd- Taw 6,836, Coupes 6,668. 4th- Taw 6,813, Coupes 6,502. In 1st, I revved near 500rpm more, in 2nd, the same, in 3rd Taw by 170rpm and 4th, Taw by 300rpm.

Time for gear changes- 1st-2nd: Taw 0.37s, Coupes 0.29s. 2nd-3rd: Taw 0.37s, Coupes 0.44s. 3rd-4th: Taw 0.37s, Coupes 0.38s. 4th-5th: Coupes 0.39s. The time for gear changes up to the 3rd-4th change were the identical at 1.11s but I lost 0.39s with the change into 5th.

Time accelerating in each gear apart from 1st- 2nd: Taw 1.47s, Coupes 1.23s. 3rd: Taw 3.29s, Coupes 2.73s. 4th: Taw 4.92s, Coupes 3.57s.

My car accelerated quicker through the gears. This is why I am hitting 5th before the line which results in a loss of 0.39s for me. As we both run the same transmission ratios and diff ratio, tyre diameter must be different. I did a calculation using your max rpm in 4th 6,813 and the diameter of my tyres and came up with a max speed of 132.5mph and that is with no losses which there would be. As you are getting 133mph speeds in 4th, you must have larger diameter tyres otherwise these speeds are impossible in 4th gear (ratio- 1.143).