Thread: Leaded engine additives

a lot of VW's use tin catalyst based products and they work great according to my son, who btw fixes vw heads for a living [img]style_emoticons/<#EMO_DIR#>/tongue.gif[/img]

might be worth looking into then (this one is a tin based thing also), wonder how expensive it is :?:

They are snake oil. There is an Australian standard for anti valve seat reccession aditives. Some time a ago the leeding "cylinders of tin"was tested and it didn't do anything to save the seats infact they had to stop the test after a couple of hours because of premature seat damage. The test consists of runing a red motor at varying speeds and loads on a dyno and then measuring the valve seat depth or whats left of them. Your best bet is to use an additive that meets the Australian standard like Penrite valve shield or Valve master, these are made from the same stuff in LRP which is some type of phosphur compound. Anything that doesn't meet the standard or has not been tested is a waste of money. I run Penrite valve shield with Optimax or BP ultimate in my E & Stype Jags and they have never gone better. Remeber that these will not bosst octane only save the seats. I have an article on this from Monash uni I will post it if I can find it.

8) bloody hell inc, ['scuse me feeny]
i've been after vw twinport heads for a while to fix up my baja project!
pm coming up.

Interesting..... always plenty of rumours. I dunno so much as snake oil. Could be right.... might have as much merit as those hiclone whatsits that are supposed to do all things wonderful and do nothing.

Hot4s mag. about three years back did a study on whether those catalyst canisters work and showed up with a bonus 2kw or something close on the dyno. They did it on a Hyundai Excel so I'll leave the rest up to you to conclude on.

The spin is my cousin had a HX with a red six fairly worked up in performance and he had something called "fuelstar" catalyst feeding it. The six went like crackers (with standard unleaded fuel in) and he was telling me they used the canisters in WWII planes to increase performance because of the crook fuel they had back then. Whether that relates to todays fuel is anyone heres guess as VSR was relatively unheard of back then but the canisters must do something as why would the airforce use them ? Why'd Travis put it on his motor ? Tends to believe too much of what he reads. [img]style_emoticons/<#EMO_DIR#>/laugh.gif[/img]

I tip a bit of oil in the mutant, (on fill up) only about a good 'gulg' of 2 stroke oil just to keep the valves lubed and don't worry about it more than that. The motor used to have a 'stumble' at idle, stuck some 2stroke in out of trial and error. After a few hours it started to idle normally, quicker but normally. Reset the idle and continue to put a 'gulg' in on a full fill to this day. I'm usually burning something whether it's valves, gear oil or tyres.... fix it when it fails. Have more than enough replacement bits to keep the motor going to next century so probably why I'm not too worried about VSR. That's probably the solution right there, stockpile spares and don't worry about it. [img]style_emoticons/<#EMO_DIR#>/biggrin.gif[/img]

Interesting mix of replies.

I'm somewhat dubious about the whole business. Their website mentions about using them in british aircraft in the USSR because of bad fuel, but i'm an aircraft nutter, and i've never heard of any such thing.

I think I might just stick to using the additives :wink: . if it's good enough for shaunp's jags, its good enough for the landy 8)

Fuel Star was the one that was tested by Monash uni. An old mate of mine from the Jag club Don Parker worked on Spitfires in Darwin during WW2 and he reckoned they didn't have them on. The fuel star bloke was trying to sell them at the Jag club and we also ran some dyno runs on an E type and the power and torque was really no different give or take experimenal error, what normally happens is the engine getts a tune at the same time as fitting and as a result they go better. There is no way I'm risking a Jag straight port head with one. The penrite stuff is 1ml per litre and has a measure in the bottle. There is only two standards for this in the world one is the OZ stadard and the other is one from the British vetran car clubs ass, both conclude they don't work. The way I see is if they were so good new cars would come with them. If every car had one they would cost about $20.

It all smacks a little of the old ...mate of a mate who knows of a bloke down at the pub who was shaggin his mates sisters cousin fitted brand "X" and added product "Y" to his 4WD/tractor/bike/plane/boat ........... and got so much extra mileage / performance he had to fit an extra fuel tank to put the fuel he was saving in 8O 8O 8O 8O 8O

Here&#96;s one to add to the mix (pun intended) ....and no I have not tried it ... has been around for years though ....... Round sinkers in the fuel tank :roll:

the theory being , they roll around the bottom of the tank and deposit particles of lead , this is taken up by the fuel :?: and delivered as leaded fuel to the engine .

Great for stirring up the sh*t and rust in the tank ... and who knows after removing and cleaning out the tank a few times ...... doing a number of road side fuel blockage repairs ... hey it might just work

Joatt