Thread: Boost pressure
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quattrorunner quattrorunner is offline
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Join Date: May 2006
Location: Las vegas
Posts: 6,228
Can't ever compare tdi or any diesel to gas power because of the difference in energy in the two fuels but......
It's mostly because the fuel head is designed to flow safely to 1 bar. Above that it goes lean and dangerously so at high rpm. I'm not an expert but not very long ago it seemed pretty common to see guys grenade the pistons or rings and heads from going lean on sustained runs. Before efi and wideband o2 sensors and afr gauges it was said to just not go ofer 1 bar. There was the andial fueler system to enrich the mix at a higher boost level and that would allow higher boost. Bigger inter coolers help up to a certain point but basically not higher than 1 bar.
These days we watch things closer with afr and egt gauges. Even then it's not a good idea unless you have a high flow fuel head, andial enrichment or efi.
That's the simple answer from a distance.
Turbo powa!
1977 911s. it's cool

Last edited by quattrorunner; 05-08-2013 at 08:32 PM.. Reason: Forgot
Old 05-08-2013, 08:30 PM
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