My 4.0 24V

[Duffel]

Hi,

I want show you a few pics and a short viedeo of my 4.0 24V. The engine runs fine, but at the moment without water , so I just let it run for a few seconds. If I close the throttle complete the engine stops. The ecu is a standart boa ecu with a boa engine loom.

http://www.youtube.com/watch?v=yid-D7mhLbA

Now I only need a Mt75 Gearbox to put the engine in the car ;-)

Thanks for your help!

Stefan

[attachment=2]

[attachment=1]

[attachment=3]

[Matt]

Hi stefan

Nice one mate, another 4.0 on the road, you beat me to it lol, how did you seal the block up? Im gonna try and and have a piece cast that i can just weld in

[Dave]

Yes another one

Well done.

[Duffel]

Hi Matt,

I have used custom-made head gaskets and a plate on the top of the block. I clamped the gasket with  sealing compound between the plate and 6 separate clamping pieces (drawing). For the rocker holes I used alu plugs.

Many things are stolen from Tobbe  

[attachment=1]

The plate on the drawing is not correct.

Stefan

[Bodies3.0s]

Whats the story on these then?

[Duffel]

Hi some progress:

The engine is in the car and runs fine. It runs with the standart boa ecu. The VIS dont work it is allway open. The car pulls very good till 3000 1/min than it feels to loose power. After 4500 it fells stronger again, but I think the high end power is not there (not sure).  
What can I do to find the mistakes? I never tuned a engine, what is the procedure to find mistakes. How do I know the engine runs normal?

[attachment=1]
[attachment=2]
[attachment=3]
[attachment=4]

[Matt]

Sweet!!

The VIS dont work it is allway open. The car pulls very good till 3000 1/min than it feels to loose power. After 4500 it fells stronger again

that would be the VIS, you need to get that working!

How did you squeeze it under the granada bonnet? lowered the mounting arms?

[TwinTurbo]

Agree with Matt, get the VIS sorted and then see how it feels.

TT

[capri v8 driver]

I agree with Math.

You need a rpm window switch and a solenoid to get the VIS working.

I never tuned a engine, what is the procedure to find mistakes. How do I know the engine runs normal?

Its always a good idea to go to a rolling road and have it checked. The engine may run nice. It doesn't mean is running the correct A/F ratio or timing.

You could contact Tobbe and ask him for advice. If i am correct he now uses a aftermarked ecu on the 4.0 24v. A ms 2 if my memory servers me right.

With a ms 2 you dont need the rpm switch, it has a buildin rpm switch.

[Dave]

Yeah as said the VIS needs to work.

The inlet is a tuned item that only works right when the VIS valve is working correctly.

A dyno is a must to get the best from it.

Good job thou. Looks at home in that engine bay. Well done.

[Duffel]

How did you squeeze it under the granada bonnet? lowered the mounting arms?

I used engine mounts from a vauxhall carlton  , they are 15 mm lower then the orginal ones. The only problem is, you have to extend the threads.

[Tobbelainnen]

Nice to see you got it running.... I havn't done any research or testing the last years, but I always thought that the inlet is holding the engine back. I hope to pick up where I left. Heck, I got two of those engines in the garage..... How would you describe to torque from your engine?

[Jean-Francois]

Can't believe I miss this post.
Congratulations, this is quite an achievement   

[Duffel]

How would you describe to torque from your engine?

From 1000 to 3000 RPM the torque is very high, but then it seems that the engine lose power. I would say, it feels like a normal 24V.  I will check the AF ration and drive on a rolling road. Then I will post the results

Regards Stefan

[capri v8 driver]

You must realise that if you increase the engine size, but use the same heads and cams (airflow), the powerband goes down to a lower rpm range. You need to increase the air flow to get the power range up.

[Duffel]

My Brother was on a rolling road today. The results are not very good. I think there is a measuring mistake. The torque at lower rpm is very bad . At 4000 1/min is the maximum with 353 Nm. The VIS was allways open. The maximum power is 221 hp @ 6040 rpm  .
I have no time at the moment, so I can not work at the engine. There are also a few other problems. The oilsump is leaking and the engine runs very rough (loud) and shakes when it idle. I think the next step is a emerald k6 and a a other exhaust system. At the moment the standart Boa exhaust is in the car with the four catalysers.

I also fitted a adjustable fuel pressure regulator on the bob rack.
It is a self made low-budget regulator

[attachment=3]
[attachment=1]
[attachment=2]

[Tobbelainnen]

That numbers wasn't very good. I think you need to sort the fueling. Another issue is probably that the inlet is too restrictive...... Maybe you should go for something like this?

[attachment=1]