diesel engines - United Bimmer Community

**dtm325pwr** · 02-11-2006, 11:13 PM

why do they have such a short red line? from all the diesels i have seen, they red line at 3K rpm, why is that?

**BMWags** · 02-12-2006, 12:29 AM

though there are some hi rev diesel engines i think its mostly because they dont need to rev high. the create massive abouts of torque and power down low because of the high compression of the engine and diesels naturaly higher energy content

( in case you didnt know, diesels dont have spark plugs. , some have glow plugs but thats differant. a diesel compresses the fuel so tight it heats itself and combusts. when you compress a gas it heats up.)

i honestly cant tell you why they dont rev higher. besides thats just the power curve that comes with diesel fuel

**xsperf** · 02-12-2006, 12:42 AM

yep, the power curve, they have a ton of torque at low RPM, why would they have higher RPM?

**dtm325pwr** · 02-12-2006, 10:03 AM

Quote:

Originally Posted by Hoppy

( in case you didnt know, diesels dont have spark plugs. , some have glow plugs but thats differant. a diesel compresses the fuel so tight it heats itself and combusts. when you compress a gas it heats up.)

wo, i didnt know that, thats pritty cool

Storamin · 02-12-2006, 11:14 AM

The amount of torque a diesel engine makes is just amazing. You need a ride in one sometime. Find pretty much any diesel pickup truck.

**dtm325pwr** · 02-12-2006, 11:24 AM

iv driven three, and rode in 2, and went off roading in 1.. and watched one pull a 60,000 pound combine, that was entertaining.

**BMWags** · 02-12-2006, 01:02 PM

ya. if a gas engine thats "high compression" compresses say. 12:1. a diesel can compress like 25:1. a glow plug is a heating element that warms the air prior to fuel injection, this is verry helpful in a cold area

**Linds** · 02-19-2006, 10:55 AM

Yeah my RC car uses glowplugs like a diesel engine. There is a turbo diesel F-350, or 250 near my house that has smoke stacks and a lift kit, that thing is awesome. My friend is probably getting one soon, i've seen a few that have over 1000 lb-ft(or is it ft-lb haha) of torque.

**Hoppy** · 03-19-2006, 04:51 PM

whoa dudes. all my posts have been renamed?!

**xsperf** · 03-19-2006, 09:04 PM

wait that is screwd up, DTMpower325 is craig BMWags is hoppy, atleast im still XSPERF

do i see a hacker?

**94bmw325i** · 03-19-2006, 10:01 PM

lol Linds is me, that was like what happened earlier when her rate my car, was my profile instead.

craig · 03-19-2006, 10:24 PM

WOAH! what the heck!?