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| PROZONE vs Head Replacement? https://www.ausmini.com/forums/viewtopic.php?f=2&t=35918 |
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| Author: | swrightgfx [ Thu Sep 20, 2007 2:29 pm ] |
| Post subject: | PROZONE vs Head Replacement? |
What are your thoughts? In order to change from LRP to UL - Use a fuel catalyst such as PROZONE or replace the head with one with hardened gaskets? |
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| Author: | Mini Mad [ Thu Sep 20, 2007 2:45 pm ] |
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LRP is no longer available?? Unleaded head is easiest..or use a fuel catalyst or lead substitute such as flashlube etc.. up to you.. |
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| Author: | Matt68 [ Thu Sep 20, 2007 2:58 pm ] |
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Fuel catalysts are mostly junk science. That is they use lots of big words to sound impressive, and indeed often present quite convincing arguements. Edit: & a smidge under $300 for the pleasure 
Think for a minute; if the fuel catalyst lasts indefinately, then none is mixed with the petrol, therefore what provides the extra lubrication it claims? Fit hardened seats in the head, then use ULP, no worries. |
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| Author: | swrightgfx [ Thu Sep 20, 2007 3:08 pm ] |
| Post subject: | |
Yeah, thats exactly what I thought, but my mate swears by them... He has a dodgy old VK Commonwhore and he got it down from 16L/100km to 12L/100km... But yeah.. I don't see how it would work - thats why I replaced the head on my old Leyland S... I mean I dont want my valve seats and crap to fiddle sticks up then have to fork out a bucket of cash just because I opted for a catalyst as opposed to a new head... Thats why I asked here - Has anyone got one fitted? If so how has it treated you? |
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| Author: | Spaceboy [ Thu Sep 20, 2007 3:10 pm ] |
| Post subject: | |
yea right. 
unleaded seats is the way to go |
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| Author: | Timbo [ Thu Sep 20, 2007 3:16 pm ] |
| Post subject: | |
LRP hasn't been available in Tassie for ages, maybe two years. Most people here seem to use flashlube or valvemaster additives. Those catalysts set my "snake oil" alarm ringing loudly. It might be ok, but you won't know if you've wasted your dough for several years. I'm even skeptical that flashlube is much use, but I use it anyway. Tim |
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| Author: | simon k [ Thu Sep 20, 2007 3:18 pm ] |
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[quote="swrightgfx"]a new head... [quote] you don't need a new head, you normally get hardened exhaust valve seats inserted into your existing head - I pay about $20 per seat, normally as part ofa full head reco... |
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| Author: | swrightgfx [ Thu Sep 20, 2007 3:25 pm ] |
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Its not like I'm in a rush anyway. And yeah, I'm using flashlube at the moment. skssgn wrote: you don't need a new head, you normally get hardened exhaust valve seats inserted into your existing head - I pay about $20 per seat, normally as part ofa full head reco... Yeah I know but I've got fairly hefty corrosion (pressure test wasn't too healthy) so I'll probably just pick up a spare if I was going to replace the seats... Which I'll probably have to do soon anyway... |
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| Author: | bnicho [ Thu Sep 20, 2007 4:12 pm ] |
| Post subject: | |
The British Federation of Historic Vehicles used a new A series engine and a bank of new heads to test a whole lot of "fuel catalysts" and additivies under controlled conditions. None of the Catalysts were any use at all at combatting valve seat recession or delivering any fuel economy advantage. Some of the additives were very good at both. Think of it this way. If those drop in the tank or put in the fuel line things were any good, then the car manufacturers would fit them to new cars! |
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| Author: | Morris 1100 [ Thu Sep 20, 2007 4:12 pm ] |
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I would go with the hardened gaskets. 
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| Author: | slinkey inc [ Thu Sep 20, 2007 4:56 pm ] |
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I've got a fuel star. And so far, it seems OK. The technology is not new. The fuel star contains lead substitute. I have not researched this but thought I'd give them a go. I think the scientific idea behind this is that tin, will readily bond to steel, which would be your valves. It is/was used to coat steel. And this (hopefully) protects the valves. I don't think you could consider this a catalyst. A catalyst, according to collision theory reduces the activation energy required therefore increases the amount of successful collision per unit time. Although the company does claim fuel efficiency increases, but I think the use of the word catalyst , under these circumstances is incorrect. |
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| Author: | bnicho [ Thu Sep 20, 2007 5:05 pm ] |
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Real this and decide for yourself if the inline gadgets are snake oil: http://www.mgb-stuff.org.uk/lead_replacement.htm Especially this part: It is known that six other additives and two fuel-line devices were tested, and that some produced worse results than premium unleaded and actually increased wear. Ian Edmunds, FBHVC fuels committee chairman, says: "There is no evidence to show why fuel-line devices, such as those containing tin cones, should work." |
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| Author: | Spaceboy [ Thu Sep 20, 2007 5:09 pm ] |
| Post subject: | |
by the time you find out they dont work, its too late. |
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| Author: | Matt68 [ Thu Sep 20, 2007 5:52 pm ] |
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slinkey inc wrote: I've got a fuel star. And so far, it seems OK.
So would not using any additive at all, at least for the first 30 to 40000 kms! That's how they get you! |
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| Author: | slinkey inc [ Thu Sep 20, 2007 8:03 pm ] |
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Only time will tell. I know other other's using the same setup and seem to be doing alright. <edit> Also, lot's of people say things. So it's hard to know who's right. I mean our government keeps telling us about CO2 crap, when my chemistry text book claims that if all CO2 was removed from our atmosphere the temeprature of the world would decrease by 1-2 degrees celcius.... Don't wanna get into climate crap but just an example. ou got to remmeber who is saying what, with what real evidence for what reason.
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