Could I ask someone to take a look at this engine please I am trying to make an Aston Martin Bulldog engine work and I just cannot get the turbochargers or the power in the right place could someone take a look into it and I am going to give you the page that I am using for the engine statistics also
can anyone help me out???
I am asking for a heck of a lot out of you I will do a video on this when its fixed call that a big prize for you (Absolution this is a challenge worthy for you)
yeah its a pig of an engine to get right I just wish Car Folio had a way of showing Air Fuel and Ignition timing as well that would be a great help as well as Cam Profile!
this is as close as i can get on power, have no idea on how to drop torque or get rid of valve float, presumably only by adding more valves or making smaller bore
anyway, i don’t really understand engineers, why make it DOHC if it only has 2 valves per cyl? Aston BullshitRev0.lua (63.1 KB)
[quote=“xABSOLUTIONx”]this is as close as i can get on power, have no idea on how to drop torque or get rid of valve float, presumably only by adding more valves or making smaller bore
anyway, i don’t really understand engineers, why make it DOHC if it only has 2 valves per cyl? [/quote]
All that’s needed to fix the valve float is to add a little quality to the top end, as the valves are apparently only just starting to float. And as for the torque I found that increasing cam and ignition increased torque more at peak power rpm than at peak torque rpm, and that by lowering boost pressure at the same time I could limit peak torque but keep the torque curve flattish enough to still make the requisite 600hp.
As for 2 valve DOHC, there would be a few benefits over 2V OHC or SOHC. The biggest would probably be the ability to use a pent-roof combustion chamber by having the valves at an angle to each other which I think would be impossible with OHC. And by not having the intake and exhaust ports quite as close to each other there should be a reduction in intake air temperatures (and consequently an increase in VE) over OHC. And you wouldn’t have the added friction/inertia/complexity of SOHC rocker arms. And it seems like you’d get better scavenging than with OHC as well.