Thread: Gen III Injectors and ACT SuperFlow Trumpets

And very sexy looking too! Does the cover still fit?

Dave

As per the instructions we had to 'Fettle' the trumpets a little to get the plenum cover to fit.

One thing they left out was that a little bearing blue would have been handy to see where the fettling was required, in the end we used a paint pen on the edge of the trumpets to find the high points.

So now the car is in "Fine Fettle"

Steve

I meant to add it also came with a thermal gasket for the trumpet base.

It certainly keeps the plenum cooler, but the general opinion on the TVR and Morgan forums is that it doesn't make much difference to the engine

Steve

Just a quick update; Having finally driven on the M1 I can say it has definitely changed the torque curve, much less gearchanging, it feels close to the Thor torque curve now.

It is also smoother and might have a little more power

All in all I am pretty happy with my investment

Steve

Steve,

On your second image, have the trumpets fallen through or are they really that short, i.e., much, much shorter than a standard GEMS?

If the Callaway trumpets are that short, would the new ones offer much over stock trumpets? Edit: I just found their website where they claim 10hp.

Dunno which ones I'd use as my P38A heads have been ported and I run a different cam.

Re the insulator, have you seen the group buy thread for thicker insulators? Rover V8 Intake Thermal Insulators I'm unconvinced as to the value of them despite the linked article.

I can't seem to find the image of callaway trumpets that I've seen, but I don't remember them being that short.

It seems a worthwhile thing to do, especially if it brings the torque curve down a bit.

Where abouts did you get the gen3 injectors from?

Sent from my SM-G900I using AULRO mobile app

Re the video below, have you noticed any improvement in starting? Sometimes mine really takes some cranking if it doesn't catch first time.

I've just read this thread, too. http://www.rangerovers.net/forum/7-r...r-upgrade.html

Interesting. It might have been more economical to do this than have my injectors serviced.

[ame]https://www.youtube.com/watch?v=VfynoxL2RZI[/ame]

Originally Posted by p38arover

Steve,

On your second image, have the trumpets fallen through or are they really that short, i.e., much, much shorter than a standard GEMS?

If the Callaway trumpets are that short, would the new ones offer much over stock trumpets? Edit: I just found their website where they claim 10hp.

Dunno which ones I'd use as my P38A heads have been ported and I run a different cam.

Re the insulator, have you seen the group buy thread for thicker insulators? Rover V8 Intake Thermal Insulators I'm unconvinced as to the value of them despite the linked article.

Ron

Yes according to Rupert they were cut down by the guys at TRS when they rebuilt the engine, they told him it was supposed to give better acceleration. I suspect they give more horsepower at the expense of torque. The Callaway trumpets are the closest thing I could see. Mine will be going on ebay soon

From what I have read the rover V8 is sensitve to intake flow, Mark Adams of Tornado fame gave me the tip about these trumpets and the guys on the TVR and Morgan forums reckon they really do make a difference.

I imagine the taper gives a bit of a Ram effect and increases the density of the air in the manifold.

Opinion on the insulator (again TVR and Morgan guys) is that it makes stuff all difference but it came with the trumpets so I put it on anyway.

Steve