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> Leaded or unleaded - That's the question, Need advice on which type of fuel to use..
reineg
post Sep 16 2024, 06:31 AM
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Hi there, Laymen and Experts alike!

I have recently acquired a 914/4-70 with a newly built engine. Up to 2.2litre and some extra horses to boot. But now to the question:
The car has got new cylinders and pistons from Pelican Parts, but I do not know much more about the engine. So do you guys (and gals) reckon it would be safer to use modern fuel and add lead, or shall I just go for modern fuel and not add lead?

What is most detrimental to the engine; to add lead to an engine that doesn't need it, or not to add lead to an engine that requires it?

Appreciate any and all thoughts on this..
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bkrantz
post Sep 16 2024, 09:31 PM
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But the challenge the OP has with a modified 2.2 liter four is what compression ratio he has. Lead additive, no, but he might need to use higher octane to run that motor hard.
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reineg   Leaded or unleaded - That's the question   Sep 16 2024, 06:31 AM
VaccaRabite   No one in the states adds lead. You should be per...   Sep 16 2024, 06:37 AM
reineg   No one in the states adds lead. You should be pe...   Sep 16 2024, 06:45 AM
914Sixer   NON ethanol gas is my preferred choice. Burns cle...   Sep 16 2024, 07:51 AM
reineg   NON ethanol gas is my preferred choice. Burns cl...   Sep 16 2024, 08:54 AM
GregAmy   I can't imagine any heads rebuilt in the last ...   Sep 16 2024, 08:01 AM
930cabman   I can't imagine any heads rebuilt in the last...   Sep 16 2024, 08:11 AM
GregAmy   Ouch, what happened to this main jet/holder? Proba...   Sep 16 2024, 08:34 AM
dr914@autoatlanta.com   regular unleaded is just fine Hi there, Laymen...   Sep 16 2024, 12:02 PM
Jamie   I switched my stock 1.7L over 2 yrs. ago to non-et...   Sep 16 2024, 12:29 PM
wonkipop   Hi there, Laymen and Experts alike! I have r...   Sep 16 2024, 06:57 PM
Superhawk996   but by the time we get to the 90s the fuel comp...   Sep 16 2024, 07:23 PM
wonkipop   but by the time we get to the 90s the fuel com...   Sep 16 2024, 09:37 PM
bkrantz   But the challenge the OP has with a modified 2.2 l...   Sep 16 2024, 09:31 PM
wonkipop   But the challenge the OP has with a modified 2.2 ...   Sep 16 2024, 09:40 PM
Dave_Darling   probably needs highest octane unleaded available....   Sep 17 2024, 03:42 PM
wonkipop   probably needs highest octane unleaded available...   Sep 17 2024, 04:12 PM
reineg   Seems you all agree on running unleaded, and I wil...   Sep 17 2024, 12:51 AM
technicalninja   Is leaded gas or real lead additives available in ...   Sep 17 2024, 07:54 AM
wonkipop   Is leaded gas or real lead additives available in...   Sep 17 2024, 04:17 PM
reineg   Is leaded gas or real lead additives available in...   Sep 18 2024, 12:25 AM
brant   The lubrication of lead is real Some motors had to...   Sep 17 2024, 04:28 PM
wonkipop   The lubrication of lead is real Some motors had t...   Sep 17 2024, 05:27 PM
reineg   The lubrication of lead is real Some motors had t...   Sep 18 2024, 12:27 AM


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