Oh... I don't know about an "antiquated V twin" but on the VTX1800 V-twin a turbo really wakes up the stock engine with 160 rear wheel horse power and 140 ft-lb torque.Originally Posted by woody
And the Turbo VTX1800 I have setting on the build bench is going to make 200 RWHP with a highly modded engine. I have been playing with Turbos for many yrs including, but not limited to a 1979 KZ1000, 1972 HD sportster (trying to keep up with the turbo KZ1000 and it could not). The turbo lag on the HDs is horrible and why I recommend a Magnuson Supercharger or MagnaCharger if you want to make good power from the HD tractor motor, it will make them a runner and if the engine is built right they will live for a few miles. If you must put a turbo on an HD then the only turbo I'd recommend is the 53 Series http://aerocharger.com/aerochargers/53series/ Aerocharger Variable Vane Turbo http://aerocharger.com/aerochargers/ like I use on the VTX1800s with a Bell Engineering vacuum adjustable fuel pressure regulator.
http://www.bellengineering.net/produ...?products_id=4
With this set up you don't need to run a pop off valve and the Aerocharger has very little lag and spools up fast, does not need to be tapped into the engine oil system as it is self oiled with it own oil reservoir, they are great turbos for most any engine under 2 liter imo.
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