410ci L98 Boost Build

[Tre-Cool]

Great time, well done! Think I saw a thread a while ago where you bought a ve ute with a 2300 on it, anything happening with it?

yeah, i've ran a 10.5 @ 127mph in it with the 6lt. When i get time i'll drop in my 6.2 and aim for a high 9.

[Tre-Cool]

So i raced the drag car on sunday during a private hire event. After putting in a 3rd 044 pump Im now getting plenty of fuel, so i could safely wind the boost up.

I've still got some work to do on it, as it looks like the alternator is only holding around 12v so it requires some recharging after a while, so i mostly did a couple of hotlap runs but it was pretty consistant at running 8.9's when i did some 2nd gear stalls and then pulled it back into 1st for the launch.

I didn't record all my runs but i got the 6 of the quickest on video. :-)

https://youtu.be/jPrzSYqV90U

https://youtu.be/QahGUPUIizs

https://youtu.be/_S_YvJ4MLrg

Fastest mph for the day was 158

We only have 1 more round of the fast series left to do, so i'll run it back on spring pressure. during the season break i'll have the accumulator to do, new gearbox with trans brake and i might even change the camshaft to something better suited for the turbo's.

Time sheet data is available here.
http://www.torqueup.net/drag/data.php

[whitels1ss]

So i raced the drag car on sunday during a private hire event. After putting in a 3rd 044 pump Im now getting plenty of fuel, so i could safely wind the boost up.

I've still got some work to do on it, as it looks like the alternator is only holding around 12v so it requires some recharging after a while, so i mostly did a couple of hotlap runs but it was pretty consistant at running 8.9's when i did some 2nd gear stalls and then pulled it back into 1st for the launch.

I didn't record all my runs but i got the 6 of the quickest on video. :-)

https://youtu.be/jPrzSYqV90U

https://youtu.be/QahGUPUIizs

https://youtu.be/_S_YvJ4MLrg

Fastest mph for the day was 158

We only have 1 more round of the fast series left to do, so i'll run it back on spring pressure. during the season break i'll have the accumulator to do, new gearbox with trans brake and i might even change the camshaft to something better suited for the turbo's.

Time sheet data is available here.
http://www.torqueup.net/drag/data.php

Great work, gee that's quick!
Well done mate!

[Tre-Cool]

did a WAW event last night. got a new PB.

ET	ET KPH	ET MPH ▴	RT	60	330	660	660 KPH	660 MPH	1000

8.893

252.83

157.1

2.265

1.493

3.852

5.787

204.19

126.88

7.463

[whitels1ss]

That's flying mate.

[Tre-Cool]

Another update.

Took the car to WAW last night, I've changed to a 3.27 diff gear. Tighter converter to suit the new trans-brake th400 (though not using trans-brake)
Also switched to a stiff sidewall slick, apparently from what I've read the soft sidewall is better suited for fixed mounted rear end's. I'd say after last night the new tires are working well. I've never done consistent 1.4's before EVER.

Date ▴	Time	Driver	Make	Model	Body	Trans	Track	Dial-in	ET	ET KPH	ET MPH	RT	60	330	660	660 KPH	660 MPH	1000	Ambient Temp	Abs Pressure	Correct. Pressure	Rel. Humidity	Dew Point	Dens. Altitude	Track Temp	Prepped Track	Racing Lane	Tyre Type	Tyre PSI	Boost PSI	Launch Type	Launch RPM	Diff Ratio	Comment
2017-02-08	20:12:00	David	Holden	VX Berlina	Sedan	TH400	Perth Motorplex		8.697	257.31	159.89	3.805	1.417	0	5.631	205.92	127.95	7.289	21.2	1009.5	1012.9	29	2.5	272	29.7	No	Left	Slick	15	20	2nd to 1st	3300	3.27
2017-02-08	18:13:00	David	Holden	VX Berlina	Sedan	TH400	Perth Motorplex	0	8.963	249.83	155.24	0.631	1.459	0	5.808	199.58	124.01	7.515	24.7	1007.4	1010.8	25	3.4	434	36	No	Left	Slick	15	14	2nd to 1st	3300	3.27
2017-02-08	19:40:00	David	Holden	VX Berlina	Sedan	TH400	Perth Motorplex		9.244	192.73	119.76	3.293	1.427	0	5.687	204.17	126.87	7.466	22.1	1009	1012.4	27	2.2	311	30.8	No	Left	Slick	15	20	2nd to 1st	3300	3.27	Backed off at top of 2nd
2017-02-08	18:50:00	David	Holden	VX Berlina	Sedan	TH400	Perth Motorplex	0	8.826	252.95	157.18	4.041	1.430	0	5.709	205.53	127.71	7.395	23.6	1008	1011.4	25	2.4	382	33.4	No	Left	Slick	15	17	2nd to 1st	3300	3.27

[duke5700]

160mph isn't mucking around. Thats a 1000rwhp.

[Tre-Cool]

yeah, id say so. haha. i did try doing some dyno pulls with it on 12 psi and it was basically useless. it would flash from 5500 to 7k straight away once i tried to load it up.

It's doing pretty well for $600 worth of turbo's!

[Tre-Cool]

Updating an old thread but the motor is still going strong, but i'll be pulling it out for it's first freshen up within the next few months. The last time i pulled it out and checked the rod bearings they were still like new 18 months ago & i'd done a couple of 1km top speed events in it.

speaking of which, i just competed in the latest event over the weekend, a nice 800km round trip from home & finally got my 200mph window banner by running 324kph. Last year i broke 2 th400 input shafts

Video below of the run:


my dad ran 321kph in his car too, which we will step up again for next year.