It's completely mad unless you know why it was done. It was like that for 2 reasons I suspect. 1st would be reduced induction noise, which on a KV6 is considerable at wide throttle openings. 2nd would be to help keep the tree huggers happy. By warming up the incoming air charge, there's a slight benefit with an emissions reduction. This works in a couple of ways. First off a warm air intake will help the fuel mix and so reduce HC output. Second a warm air charge is less dense than a cold air charge. Less density = less Oxygen, which therefore can burn less fuel, again reducing emissions slightly, only CO2 this time.
Probably. The tree huggers have a lot to answer for. All vehicles now put out more CO2 per mile than they otherwise would because of the catalytic converter. Most people are unaware that for the cat to function, the engine actually has to burn extra fuel!! This extra fuel being burned actually increase CO2 output well above the equivalent CO2 emissions for the same engine, calibrated to run without a cat.
That old post. That was done when I had time and ideas. Sadly I forgotten idea even done that thread and tinkered away without posting any more on it.
This may just be me getting old and grumpy, but I find modern petrol engines very unrewarding to play with, the amount of £'s spent for what is now quite a small return, makes me cold. Give me an old twin carb and a half decent tool kit, I'd be like a pig in sh1t.
Unfortunately diesels now have so many computers on them that all you can hope for is a decent chip or remap.
Think I might restart negotiations with the wife again about that Triumph gt6 mk1 I've always fancied. I reckon with a concerted effort she'll crack in say 5 or 10 years
Mike
Modern engines are very difficult to improve as the fueling is so restricted. All modern petrol engines run with a very tightly controlled fuel mixture. This really hampers power generation and, strangely maximum fuel efficiency too.This may just be me getting old and grumpy, but I find modern petrol engines very unrewarding to play with, the amount of £'s spent for what is now quite a small return, makes me cold. Give me an old twin carb and a half decent tool kit, I'd be like a pig in sh1t.
Unfortunately diesels now have so many computers on them that all you can hope for is a decent chip or remap.
Think I might restart negotiations with the wife again about that Triumph gt6 mk1 I've always fancied. I reckon with a concerted effort she'll crack in say 5 or 10 years
Mike
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