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Old 12-02-2003, 21:58   #1 (permalink)
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Super or Unleaded?

Just a quick question. Does the MKII Pinto engine run on leaded or unleaded fuel. Im pretty sure its unleaded, but then it dawned on me that it was just an assumption and i didnt really know...

thanks.
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Old 12-02-2003, 23:33   #2 (permalink)
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Re: Super or Unleaded?

MkII as in the MkII Escort- Leaded.
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Old 12-03-2003, 03:37   #3 (permalink)
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Re: Super or Unleaded?

Ah crap... Well it makes sense i suppose... Good thing i havent been running it much.. cheers for that...
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Old 12-03-2003, 04:38   #4 (permalink)
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Re: Super or Unleaded?

Yeah, leaded, or these days 'Lead Free Super', aka LRP (Lead Replacement Petrol). Your best bet is to get some additive like Valvemaster or whatever the others are called and then you can run unleaded, Premium ULP, Optimax, Vortex whatever unleaded fuel you'd prefer. Just make sure you add a little more then what they recommend, so if they advise 10 mls per litre (for example), make it more like 12, because their recommendation is for engines that are hardly even idling, let alone getting above 2000 RPM...

That is, until you can get the valve seats hardened so that the beast can run on unleaded without any additives. That's what I'll be doing some time next year.
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Last edited by The MaDDeSTMaN; 12-06-2003 at 16:43. Reason: Spotted another typo or three...
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Old 12-06-2003, 16:31   #5 (permalink)
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Re: Super or Unleaded?

can u really change it to run on unleaded i just heard that now wow
ok how much does it cost and who can do it?
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Old 12-06-2003, 18:35   #6 (permalink)
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Re: Super or Unleaded?

Quote:
Originally Posted by Nicksta
can u really change it to run on unleaded i just heard that now wow
ok how much does it cost and who can do it?
As far as I know, you can change any engine that is supposed to run on 'Super' (Leaded fuel) to be able to run on Unleaded. The issue is the valve seats, which need to be hardened. Engines designed to run on leaded fuel were designed so that the lead provided a sort of 'cushion' (Ok people, I'm simplifing this here) for the valve seats. If you run an engine designed for leaded fuel on unleaded, there is no lubrication for the valve seats, and they get destroyed, leading on to other engine damage.

How much does it cost? I don't know yet. I'll post a new thread about it when I get mine done.

Who can do it? I guess an engine reconditioning specialist would probably be the best bet, but a decent mechanic could probably do it. I think the most important thing would be to get whoever does it to write out exactly what they did, so you have some sort of proof if you run into any problems later (ie you run it on unleaded and have trouble with the valve seats).

Important note: Not many people seem to know this, but soon in Australia you WILL NOT be able to buy LRP (Lead Replacement Petrol), which replaced LP (Leaded Petrol). It's being phased out, and so soon you will only be able to buy unleaded, Diesel, LPG (Liquid Petroleum Gas), and the various 'Premium' unleaded fuels (Optimax, Vortex, Synergy, etc.) at your local petrol station...

So if you're going to continue driving cars powered by engines designed to run on leaded fuel, either get used to adding additives to your fuel (such as Valvemaster, which is what Shell/Coles Express sells and I use), or go and get this done to your engine.
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Last edited by The MaDDeSTMaN; 12-06-2003 at 19:18.
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Old 12-06-2003, 19:07   #7 (permalink)
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Re: Super or Unleaded?

I'm in Sydney and I got the heads on the 351 done for $800 and now I can fuel up anywhere because LRP is too hard to find.
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