My understanding is that, Adding Lead Sulfate to Petrol is cheaper than re-refining 'catalytic cracking' to get PULP. Lead is being phased out of various products because it can affect the development of young people and is permantly stored in the body and the environment. In high doses lead can cause mental problems - 'As mad as a Hatter' (Historically Hat makers used Lead to cure felt - or something) But I am not a Greenie, I just want my car to go hard, petrol to be cheap and Police to look the other way. If we must be environmentally sensitive then you can just buy Regular unleaded and make or buy additives. Toluene can be used to increase the RON of Petrol, and a little bit of ATF can be added as a cleaning agent. There is a recipe floating around somewhere. I don't know what upper cylinder lubricants are made from (Graphite?). There are a few ChemEng types on the list Perhaps they know some more. Regards, Nick ----- Original Message ----- From: jessica Downes <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Saturday, 6 January 2001 11:16 PM Subject: Re: LRP > > Running phosphorus or magnesium through your engine cant be any better for > it than lead is to the environment. I may sound like an idiot, but what type > of fuel is optimax and how does it run as well as leaded? and if it did, why > weren't we all using it in the first place? What would you all recommend in > the long run for dattos? Because, quite frankly LRP is shit! > > Jess. > > >From: Craig Overend <[EMAIL PROTECTED]> > >Reply-To: [EMAIL PROTECTED] > >To: [EMAIL PROTECTED] > >Subject: Re: LRP > >Date: Fri, 05 Jan 2001 17:26:45 +1100 > > > >As I understand it the main problem with running unleaded in engine > >designed for leaded is valve seat recession. If an engine has been run > >on leaded for all its life, converting to unleaded initially you won't > >see a problem until 6-12 months down the track(depending on use) when > >the embedded lead in the metals is eventually cleaned away. Recession > >then only occuring in engines with soft valve and seat materials. The US > >has been running dato's on unleaded for years, here in OZ the only L > >engine that may have a problem with unleaded is the early L16 that used > >softer valve seats. > >The other area of concern has to do with valve material. Since lead acts > >as a lubricant it reduces friction and therefore heat. Exhaust valves > >can then get too hot running unleaded creating a number of problems such > >as burnt valves that dont seat, valve/seat pitting or become preignition > >points. > >As long as the octane of the unleaded is adequet I don't see a problem > >with using it is a datto. Keep an eye on valve lash setting for > >indication of wear just to be safe. > >Optimax raises another issue to do with the amount of aromatic compounds > >used in it as a replacemnt for lead to increase the octane level. There > >can be problems with rubber seals/hose in the fuel system being eaten > >away over time, and synthetic rubber is then called for. Optimax does > >have limited lubrication abilities but nowhere near enough for soft > >valve/seat engines. Even LRP is not as good as leaded for lubrication > >and cooling. I personnaly wouldn't use unleaded without a working > >catalytic converter either. > >Just this week I saw on the news where BP somewhere is OZ released a low > >sulfur content Diesel fuel that did just that, eat the rubber seals. > > > >seeya, > >Craig. > > > >Richard Webb wrote: > > > > > > What do you have to do to run optimax? I run Leaded at the moment. Do > >they > > > have a lead supplement? or can you just swap straight over to optimax! > > > Thaught it would be a good idea now petrol is down in the 80's = ) > > > > > > rich > > > > > > ----- Original Message ----- > > > From: "Michael Foreshew" <[EMAIL PROTECTED]> > > > To: <[EMAIL PROTECTED]> > > > Sent: Friday, January 05, 2001 9:55 AM > > > Subject: Re: LRP > > > > > > > Ken, > > > > > > > > Had a similar story with my rally car. It is an L18 and has not been > > > modified other than carbs (SU's), extractors and elec. dizzy. I found > >mine > > > would run really crap until I revved the rings off it and then would be > >OK. > > > > > > > > I have been running Optimax for the 4-5 months and the thing is so > >much > > > happier. Idles better and non pinging, hesitation, whatever. Part > >throttle > > > response is good. The only problem was I had to replace fuel filter > >(twice) > > > as the Optimax has a cleaning agent which removed all the crap from the > >fuel > > > lines and tank. > > > > > > > > --- "Ken Abraham" <[EMAIL PROTECTED]> > > > > > wrote: > > > > > > > > > > > > > > > > > > > ><DIV><FONT size=2>List Members,</FONT></DIV> > > > > ><DIV><FONT size=2>I have discovered the reason for my rough running > > > > >L20.</FONT></DIV> > > > > ><DIV><FONT size=2>Lead Replacement Petrol.</FONT></DIV> > > > > ><DIV><FONT size=2>On part throttle openings when the vacuum advance > >is > > > working > > > > >it runs poorly, but when you WOT it the vacuum advance ceases > > > to advance > > > > >and the engine 'comes alive'.</FONT></DIV> > > > > ><DIV><FONT size=2>Strangely, it doesn't 'ping' it just > > > misfires.</FONT></DIV> > > > > ><DIV><FONT size=2>Modified engines should probably not drink LRP > > > even for > > > > >commuting.</FONT></DIV> > > > > ><DIV><FONT size=2>What are your experiences?</FONT></DIV> > > > > ><DIV><FONT size=2>Regards,</FONT></DIV> > > > > ><DIV><FONT size=2>Nick</FONT></DIV> > > > > ><DIV><FONT size=2> </FONT></DIV> > > > > > > > > > > > > > _____________________________________________________________ > > > > Get Your free Ozdat Email Account > > > > ---> http://www.ozdat.com > > > > > > > > > > > > > > > _________________________________________________________________________ > Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com. > --membersozdat------------------------------------------------------- OZDAT Mailing List Please Note:- Send (un)subscribe requests to [EMAIL PROTECTED] Send submissions to [EMAIL PROTECTED] No unauthorised redistribution of this email http://www.ozdat.com/ozdatonline/index.htm http://www.ozdat.com/ozdatonline/listindex.html http://www.mail-archive.com/[email protected]/ ---------------------------------------------------------------------
