Talk Morgan Forums Morgan Sports Cars Classic Morgans (pre-CX) Monty Takes A Deep Breath

Returning to the cold air intake idea, here's Monty's current, and far from ideal, 'Hot Air' setup that needs sorting!





And here's a rough AI render showing our forward facing inlet idea, that not only allows us to remove the sharp turn at the the throrttle body and the further bends to the air filter, but also helps us create a 'Straight Shot' cold air intake.



I will also take the opportunity to replace the current Mondeo throttle body as used on the Duratec Plus 4, despite equiping Monty with a vastly superior metal version as first discovered by Rog, the standard 65mm size is really bigger than it needs to be, especially once youv'e removed the restrictive swirl flaps. Fitting the following Jenvey SFG60/0 throttle body will still easily support 300hp, but going down to 60mm will give better throttle control just off idle, and during slow speed driving.



The more apropriately sized 60mm Jenvey SFG60/0 not only improves low speed drivability by virtue of the smaller butterfly, it also delivers a progressive linkage by vitue of its eccentric throttle wheel that further improves drivability by changing the pedal movement to the butterfly opening ratio at smaller butterfly openings, this effectively softens throttle response as you pull away from junctions and trickle through town.

The smaller 60mm progressive linkage Jenvey SFG60/0 throttle body combined with the blended Alpha-N and Speed Density engine load stratergy, some additional ignition timing based tricks, and by advancing the Newman Phase 3 inlet camshaft by 1 degree, we should be able to deliver equal and possibly even better drivabily than a completely standard untuned Duratec Plus 4.

It's estimated by removing all the bends in the inlet pipe we could pick up as much as 4hp, estimates also suggest by feeding Monty's Duratec substantually cooler air we could add an additional 6hp. Combine the two and there's stong mathamatical evidence to suggest we'll enjoy a useful 10hp increase. All that with the better drivability offered by the 60mm progressive linkage Jenvey SFG60/0 throttle body, and we should end up with the perfect induction setup to pair with the torque producing Fusion Fabrications long runner inlet.