Included in this listing is a pair of stage 4 Merlin cylinder heads for the Rover V8 engine. Created from 25 years of flow bench studies and now machined in-house by RPi engineering from ultra high-grade, high density billet alloy on our very own V8 powered 4 axis CNC machine. This is truly the ultimate fast road Rover V8 cylinder head, with valves repositioned for best flow and angle, larger ports designed for most efficient air flow and speeds, additional supports for the rocker shaft assembly and more to allow for huge gains in torque, efficiency and power. As if that wasn’t already good enough, these will also be supplied with a pair of cast alloy Merlin rocker covers, so they’ll look good under the bonnet too. Inlet valve size 1.73. Exhaust valve size 1.45. High grade valve springs installed. Two additional rocker shaft supports on each head. All parts for installation are available from RPi. Cast Merlin F85 rocker covers included. Machined in-house, to order. What are the advantages of choosing Merlin cylinder heads? The Merlin heads open up new realms of power, torque and efficiency in the Rover V8 engine thanks to 25 years spent on flow bench studies as well as modifying standard Rover heads. The result is the ultimate in fast road and offroad heads with valves positioned for best efficiency and sized for optimum flow. What gains will I see? This is something that’s very difficult to put numbers on as everyone’s vehicle, engine, setup and usage is different however if you wish to know more please give us a call and we’ll do everything we can. However there will be gains in torque and power in the vast majority of Rover V8 engines. Will these heads work on my 3.5? The 3.9, 4.0, 4.2 and 4.6 engines all move much more air than the 3.5, and therefor can see larger gains from a high-flow cylinder head. Because of this it’s best to get the core engine, ignition and fuelling systems correct before fitting Merlin cylinder heads. If you wish for any additional information, please message. Please note that as these heads are machined to order, there will be a waiting period before you recieve your cylinder heads. A piper 285 cam is recommended by us, however another cam is available. Specific Loctite grades are required for installation of some bolts, details included or by enquiry. All parts for fitting are available from us if required. The item “Merlin F85 Cylinder Heads High Performance Stage 4 Rover V8 Morgan TVR ported” is in sale since Tuesday, April 3, 2018. This item is in the category “Vehicle Parts & Accessories\Car Parts\Engines & Engine Parts\Cylinder Heads & Head Covers”. The seller is “partsrange” and is located in NORWICH. This item can be shipped to United Kingdom, Reunion.
- Manufacturer Part Number: F85
- Brand: RPi Merlin