Peter Truman Posted April 15, 2020 Report Share Posted April 15, 2020 Never fitted one, but I do remember in the 60's driving home across the North York Moors in the wifes Herald 12/50 or my 1200 Conv on a foggy night how much better the car ran, smoother, quieter (dense air) and it felt more responsive. Peter T Link to comment Share on other sites More sharing options...
daverclasper Posted April 15, 2020 Report Share Posted April 15, 2020 7 minutes ago, Peter Truman said: Never fitted one, but I do remember in the 60's driving home across the North York Moors in the wifes Herald 12/50 or my 1200 Conv on a foggy night how much better the car ran, smoother, quieter (dense air) and it felt more responsive. Goodness. I don't think I've got room under the bonnet, for a dry ice machine. 1 Link to comment Share on other sites More sharing options...
JohnD Posted April 15, 2020 Report Share Posted April 15, 2020 Some extreme turbo/supercharger machines use water injection . The finely nebulised water rapidly vapourises, absorbing heat from the charge, and from the combustion. It takes advantage of the Latent Heat of Vapourisation of water, that is much higher than any other liquid. The result is just water vapour in the exhaust. I also recall some trubocharged rally machines. that had water sprays onto, not into, the intercooler. The water would evaporate on the surface of the radiator, augmenting cooling, but not mixing with the charge. No need for dry ice! Although that used to used in F1, shovelled into the radiator intakes if the engine had to remain on for long without the car running, because they relied on entrained air only, no fans. But then, they put leafblowers in the intakes instead! Link to comment Share on other sites More sharing options...
Colin Lindsay Posted April 15, 2020 Report Share Posted April 15, 2020 1 hour ago, JohnD said: Some extreme turbo/supercharger machines use water injection . The finely nebulised water rapidly vapourises, absorbing heat from the charge, and from the combustion. It takes advantage of the Latent Heat of Vapourisation of water, that is much higher than any other liquid. The result is just water vapour in the exhaust. When I was searching the the 1960s or earlier version I've got an ad for (in one of my old motoring magazines, no doubt) I found a lot of modern equivalents, which are electronically controlled and full of modern technology (including breaking the water down to release hydrogen); but I'm almost sure the old versions just sprayed water straight into the manifold. Round where I live I'd need a leafblower to take leaves OUT of the engine... Link to comment Share on other sites More sharing options...
JohnD Posted April 15, 2020 Report Share Posted April 15, 2020 Quote, "full of modern technology (including breaking the water down to release hydrogen)" It would require a temperature of more than 3500C, at 1 atmosphere of pressure, to ionise water vapour to it's constituent atoms. A lot more at raised pressure. Any way, what would the hydrogen do? It would burn with oxygen to water, the enthalpy is constant, but inefficiences would waste a lot of energy. Not 'modern technology', modern voodoo! John PS I know, we've got a long way from cold air to the carburettors! But what else do you do during lockdown but chat online? 2 Link to comment Share on other sites More sharing options...
Colin Lindsay Posted April 15, 2020 Report Share Posted April 15, 2020 29 minutes ago, JohnD said: Quote, "full of modern technology (including breaking the water down to release hydrogen)" Not 'modern technology', modern voodoo! https://www.ebay.com/itm/HYDROSTAR-HYDROGEN-GENERATOR-RUN-YOUR-CAR-ON-WATER-NOW-HHO-CONVERSION-GUIDE-/150776145143 Here we go, the new generation of snake-oil salesmen! Incidentally, didn't someone recommend pond pipe earlier? Halfway there already...! Link to comment Share on other sites More sharing options...
Pete Lewis Posted April 15, 2020 Report Share Posted April 15, 2020 Ive got my own built in methane generator does that work ???? but sometimes its not gas the nerve ends are less fussy as you age !!!!you cant tell the difference between solids and gass My mum said she let out a silent fart, i suggested she needed new batteries in the hearing aids Pete Link to comment Share on other sites More sharing options...
SpitFire6 Posted April 15, 2020 Report Share Posted April 15, 2020 I have driven an EFI Niva in an atmosphere with no moisture in the air @ -45. I can honestly say I felt no difference in performance. 1 Link to comment Share on other sites More sharing options...
Clive Posted April 15, 2020 Report Share Posted April 15, 2020 24 minutes ago, SpitFire6 said: I have driven an EFI Niva in an atmosphere with no moisture in the air @ -45. I can honestly say I felt no difference in performance. I don't think I would have felt anything at all at that temperature. Hope the heater worked well. Link to comment Share on other sites More sharing options...
SpitFire6 Posted April 15, 2020 Report Share Posted April 15, 2020 (edited) It was a VAZ/Lada. The heater was great! The mechanics were kak. Edited April 15, 2020 by SpitFire6 Added Russian Mech Comment. Link to comment Share on other sites More sharing options...
Colin Lindsay Posted April 15, 2020 Report Share Posted April 15, 2020 Last time I was in a Lada Niva (Cossack) I don't think I could feel anything at all when I got out. Link to comment Share on other sites More sharing options...
SpitFire6 Posted April 15, 2020 Report Share Posted April 15, 2020 Yes Cossack in the UK. Mine was a new 4 door. We called it the Silver Bullet because it was metallic Silver. Link to comment Share on other sites More sharing options...
Anglefire Posted April 15, 2020 Report Share Posted April 15, 2020 Would the water content (primarily thinking of the water injection products) in effect raise the compression ratio as well as vaporising and expanding when the bang occurs? or at least the theory. Link to comment Share on other sites More sharing options...
Anglefire Posted April 15, 2020 Report Share Posted April 15, 2020 Oops. I didn’t read on to the next page before posting 😂 1 Link to comment Share on other sites More sharing options...
hoopsontoast Posted April 16, 2020 Report Share Posted April 16, 2020 As someone without a suitable car at the moment, a thought I had for a Vitesse could be take one of the main beam sealed units out as space for an Air-Filter for direct cold air feed, like this but maybe a bit more stealthy..... 😁 Could look like this... Link to comment Share on other sites More sharing options...
Guest Posted April 18, 2020 Report Share Posted April 18, 2020 On 11/04/2020 at 13:06, HUB said: Hi all, Asking here cos I can't get to my car atm. Looking to put extension tube on to air filter housing to "catch" cooler air from grill area...What diameter tubing do I need?? To answer your original question - presuming you have a Vitesse style air filter box; the OD of the stubs upon which the flexi hoses fit is 35.3mm which is 1.39 inches or 1-3/8" Hope that assists ?? Link to comment Share on other sites More sharing options...
JohnD Posted April 18, 2020 Report Share Posted April 18, 2020 hoopsontoast, Silverback was much, much more subtle! Did you ever see under its bonnet? The engine air intake was via what was designed as the heater air intake, in the pressure bubble under the windscreen. There was a BIG air filter in the fabricated casing strapped onto the heater plenum. The blank headlamps were for weight saving. 1 Link to comment Share on other sites More sharing options...
wimpus Posted April 19, 2020 Report Share Posted April 19, 2020 I've just modified an old air box to fit on my Spitfire. Pipe will run to the front with a cone filter up front. 4 Link to comment Share on other sites More sharing options...
JohnD Posted April 19, 2020 Report Share Posted April 19, 2020 Excellent! Nice work! Link to comment Share on other sites More sharing options...
HUB Posted April 19, 2020 Author Report Share Posted April 19, 2020 well I'm glad I didn't ask a difficult question 😉 Lot of very clever guys getting bored at home?? Link to comment Share on other sites More sharing options...
wimpus Posted April 25, 2020 Report Share Posted April 25, 2020 Testfit. Bought a filter that turned out to be ... as big as the engine (the pipe in the pics is just for testing) Will try and test it in a few weeks, after our lockdown is done.. Link to comment Share on other sites More sharing options...
yorkshire_spam Posted April 25, 2020 Report Share Posted April 25, 2020 @wimpus, out of interest, which version of the original air-box did you start with? Standard 2 tube 1500 spec. ? Link to comment Share on other sites More sharing options...
wimpus Posted April 25, 2020 Report Share Posted April 25, 2020 6 hours ago, yorkshire_spam said: @wimpus, out of interest, which version of the original air-box did you start with? Standard 2 tube 1500 spec. ? Yes an original 1500 hs4 one, got maybe 4 of those ! I've cut the center section out. 2 Pipes at the front i got off and filled those in. Then fitted a round piece of pipe at the spot i wanted. And finally welded the top back shut. Was harder then it seemed ... 1 Link to comment Share on other sites More sharing options...
Iain T Posted April 25, 2020 Report Share Posted April 25, 2020 The cone is in a good position for cold air but in the rain it will get wet, won't this reduce air intake? Iain Link to comment Share on other sites More sharing options...
Graham C Posted April 25, 2020 Report Share Posted April 25, 2020 So is cold air good for carburetor? Graham Link to comment Share on other sites More sharing options...
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