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WD-45 Diesel.. What's an air cell?

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JDGnut

02-16-2000 18:25:41




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Just tore down two WD 45's with the 6 cylinder Buda engine in them.. took the air cell part of the head apart. (Or I took the cap off) What is the purpose of the cell.. Does it work?? I've taken a lot of diesels apart.. but never one quite like that.. Can this area be filled in to increase the compression.. Or I have also been looking at a different style pistons that has a lower compression ratio.. but want to fill this cell in to keep the same ratio. Or am I just wasting my time with this head.. New to these AC's an info will help.. thanks for your time..
JDGnut

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DBowersPhx

02-19-2000 01:21:07




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 Re: WD-45 Diesel.. What's an air cell? in reply to JDGnut, 02-16-2000 18:25:41  
When you were at the Phx show, both the MM GD and the IHC 350D (Continental engine) had the cells in them. As explained above they seem to work well. Good luck with the WD45. Dave and Mary Bowers



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Chip

02-16-2000 20:40:47




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 Re: WD-45 Diesel.. What's an air cell? in reply to JDGnut, 02-16-2000 18:25:41  
If I understand correctly, the injector shoots the fuel over into the air cell where it atomizes and begins the combustion process. I know if they crack, they run terrible. Don't fill it in!!!!!



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D-17dave

02-17-2000 21:13:31




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 Re: Re: WD-45 Diesel.. What's an air cell? in reply to Chip, 02-16-2000 20:40:47  
The power cell is called the Lanova design. A little difficult to explain. The cell uses an orifice to regulate the speed of the reaction of combustion so this makes sense to me. The cell takes a portion of the compresion and a the injecter's location sprays a portion of the fuel spray inside. Upon fireing the pressure in the combustion chamber is the same as most any other diesel, however the pressure inside the cell reaches approximately 1300 psi. The orifice regulates the discharge of pressure in the combustion chamber and causes the swirling of the air-fuel mixture for very efficiant combustion and the slow release of pressure causes a longer power surge on the piston giveing a longer torqe range. This info comes from a WD-45 lituriture I have from a tech service school education manual, so I beleive it to be accurate. Some OLIVER and a few other engine manufactuers used this design. It does rob a little compresion off and thats what makes these designs a little hard to start if your batteries are a little weak, but more than makes up for it in fuel economy and overall torqe. NO don't plug it or try to defeat them , it will only lead to poor performance. The caps you removed need to be lapped in when you put them back. Now that we've all been to school, hope this clearifies things for you. Call me for any furter questions, be glad to help.

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