Project Xr6 T

[SPIKO]

Hi all

After braking the gearbox a few weeks ago the car is finally back on the road.

I did make a few modifications to the exhaust in street tune and added a flange to drop it at the dump pipe at the track, I also changed the rear end gears from 3.73 back to 3.46.

After the exhaust mods and about 1 hour of driving semi-hard I destroyed another flex plate or drive plate which I may add is my second. The boost went crazy after the exhaust was freed up showing 24-25psi and the car was all over the road in any gear!

The tune in the car prior to these changes was for 19psi so I was a little concerend about leaning out and doing some damage to the engine. So I decided to head to C&V Saturday morning which was the following day and check the mixtures.

For those who dont know I broke the previous box doing some test runs to see how the car reacts down the track with no boost of the line the best of 2 runs because the 3rd I smashed the converter 11.7@ 129.21mph 60"2200 and 100mph half track this was achieved with a street tune of 590rwhp and street slicks treaded which provided almost no traction till half track. The last run I said stuff it against the wishes of C&V and gave it 10psi of the line and progressed with bracking converter, oil pump drive and tail shaft before half track.

Basically what I'm trying to say is making power gentleman is the easy part but the setup and turbo I am running produces a big spike of torque all at once that creates havock on my drivetrain and traction. I will attach one of my dyno runs at 22psi so you can view the tractive effort at the tyres for yourselves this particular run is with 98ron fuel and booster with full exhaust and no Nos

I am waiting on a billet steel flex plate that is being made so I don't lose my legs and 15 inch rims with 28 by 9.5 inch rubber for the rear and front runners before I go again should be ready in about a week.

Prior to my previous beliefs I do not think a XR6T sedan with original wait and no tubbs will ever run a low 9 sec pass 9.9 9.8 maybe and not with the standard rear end or gearbox! I will give it my best anyway without the Nos because I have A 4000rpm stall now and that should get me off the line quick enough.

Next time out I will drop the exhaust though and run some good fuel and about 26psi wich is good for around 800rwhp dont forget I lose alot threw the drivetrain and converter being auto the loss with 4000 stall and auto is about 1.44 so for example 700 at the treads with my setup times 1.44 equates to about 1008 Fwhp

that is alot of go with 98ron fuel dont you think?

Anyway should be ready and going out again in the next couple of weeks I will let you know.

Regards

Spiro

[PASHEN]

All I can say is WOW.

Good luck with it Spiko...keep us posted.

Umm, will this also be your street driven transport? I pity anyone that decides to take you on at the lights.

[SPIKO]

Pic of the work that has gone into Project XR6 T and the dyno results so far.

[SPIKO]

All I can say is WOW.

Good luck with it Spiko...keep us posted. 

Umm, will this also be your street driven transport?  I pity anyone that decides to take you on at the lights.

<{POST_SNAPBACK}>

Thanks Pashen

Believe it or not it is!

[Geeseman]

Good work Spiro. I know what you mean about the torque all coming on at once. It's a problem that may see me stop modifying the car as the cost to rebuilt the trans on a regular basis (as well as other components that will go over 400rwkw) is not worth it for me.

At the end of the day it's probably too heavy a car for drag racing. No doubts it can make the power just getting the components to deal with this considering the huge weight of the car. Perhaps your next goal is to look at stripping wieght from the car so it can launch harder without the stain on the driveline?

[Guest xrtwpn]

Good luck with everything I hope you get what you want

But I do disagree wth you on the xr6 turbo running a 9 with its weight I think it will happen and its only a matter of time and the right setup

[SPIKO]

Good luck with everything I hope you get what you want

But I do disagree wth you on the xr6 turbo running a 9 with its weight I think it will happen and its only a matter of time and the right setup

<{POST_SNAPBACK}>

Hey xarh6turbo

I never said it wont run a nine I said it wont run a low nine with standard weight standard rear end and box bud.

I may be wrong we will see soon enough!

Spiro

[Guest xrtwpn]

Good luck with everything I hope you get what you want

But I do disagree wth you on the xr6 turbo running a 9 with its weight I think it will happen and its only a matter of time and the right setup

<{POST_SNAPBACK}>

Hey xarh6turbo

I never said it wont run a nine I said it wont run a low nine with standard weight standard rear end and box bud.

I may be wrong we will see soon enough!

Spiro

<{POST_SNAPBACK}>

I agree with the standard gear box that will never happen , What gear box are you going for now ??

When I went to change mine I looked at a poweglide and a 3 speed c9 I got told the powerglide would only make the car of a slug off the line and I will need the 3 speed to move the weight of the car off the line

[SPIKO]

Good luck with everything I hope you get what you want

But I do disagree wth you on the xr6 turbo running a 9 with its weight I think it will happen and its only a matter of time and the right setup

<{POST_SNAPBACK}>

Hey xarh6turbo

I never said it wont run a nine I said it wont run a low nine with standard weight standard rear end and box bud.

I may be wrong we will see soon enough!

Spiro

<{POST_SNAPBACK}>

I agree with the standard gear box that will never happen , What gear box are you going for now ??

When I went to change mine I looked at a poweglide and a 3 speed c9 I got told the powerglide would only make the car of a slug off the line and I will need the 3 speed to move the weight of the car off the line

<{POST_SNAPBACK}>

I believe the powerglide is the wrong box for the job also, C9 may or may not hold again. But there is talk of a C10 with powerglide input and output shafts that might be the way I go.

[geea]

Great stuff Spiro. Good luck on getting a good time.

Are you still heading to Heathcote on the 16th July? It would be great to meet you and see your car.

Geea.