The Definitive Rover V8 Engine Knowledge Base for Range Rover, Land Rover, TVR, Morgan, Marcos & Classic Cars Running Rover V8 Engines


The Evolution of RPi's Morgan +8

Starting out as a 1998 Morgan +4 using the Rover T16 2.0 litre 4 cylinder engine this Morgan found itself travelling from the highlands of Scotland to the Norfolk Countryside.

+4 Improvements

We started by developing some essential upgrades to the T16 engine which include

  • 304 Grade Stainless Steel Exhaust system with both CAT and NON-CAT options along with a choice of tail pipes/silencers
  • K&N Chrome finish washable air filter
  • Magnecor Sports Ignition Plug Leads
  • Rising Rate Adjustable Fuel Pressure Regulator

Before and After

The above simple changes made the engine so much more responsive giving us throttle response without having to be in the right gear at the right rpm.

Click here to ask for details
of the Plus 4 Upgrade

After enhancing the 4 cylinder engine it was time to replace it with one of our Rover V8 engines. We started with one of our 4.6 litre short engines and some Stage 3 cylinder heads. 

Heres the special part!

We then added Hotwire Fuel Injection with a carbon fibre intake plenum with three throttle bodies!


but we still had to fit the exhaust. Previously developed on a 5.0 litre Morgan that visited us from Germany we had all options in stock. It was decided to go for the straight through pipes with side exit.

So what's next?

Well with the 4.6 engine removed we asked Holly our engine builder to build a 5.5 litre engine for even more torque. Whilst installing a +8 axle was purchased giving the Mog a Limited Slip Differential in the hope to gain some more traction.

So now for a trip to Goodwood

With a Morgan track day coming up it was all hands on deck to get the engine and axle installed. Unfortunately due to customers projects also the Morgan was not 100% setup to show off at the track day however in true RPi fashion we did not let this put us off and still got a few laps in.
Click here to see videos featuring this car

Wait.....There's more!

Although the 5.5 offered more than enough power, this engine was destined for a Rally car abroad and with some new design cylinder heads on the market the Morgan seemed like the best testbed for them :-)

So Holly built up a Coscast 4.6 litre short engine and bolted the Merlin Cylinder heads to it (Just the same combination used on Nigel Deans Kit Car Build seen here. Keeping the carbon fibre injection system (for now ;-) the combination was an ultimate solution.

And now!!

With our uniquely developed Power Plenum allowing perfect LPG conversions to 4 barrel Carburettors the 4.6 litre engine now has a Weber carb installed with a powder coated black Power Plenum and LPG conversion.

Pictures of this conversion coming soon!!!

Of course she has also featured in our promotional material. Not only the above mentioned Exhaust flyer but also as part of our SPOT THE DIFFERENCE advert in the Miscellany.

Although the below two videos are of the previous 4.6 litre installation with no LSD, jump inside and experience a 12.5 second quarter mile run.

A rolling road session with the first 4.6 litre engine installed. Person added for extra ballast and less wheel spin. With a 98 dB limit on the track and no time to implement our track day silencer option restrictors were placed in the ends of the tail pipes, unfortunately restricting not only sound but power too :-(

For more of our YouTube videos click here.


Copyright RPi Engineering 2009. All rights reserved.

website design software
website design software