I know what Torque is, but I'm just saying that tractors have a LOT of torque... ok!?
Enthusiast
I know what Torque is, but I'm just saying that tractors have a LOT of torque... ok!?
V0R5PRU7NG DUR6CH T3CHN1K
Motion & Emotion
Furniture
Quiggs is right on the money. Diesels aren't bad anymore. People still think they are though. Actually, there are many tractor trailers that spew a lot of diesel fumes. Clean them up first and then worry about other stuff. They stink!
Again, the old crappy ones do. The newer ones don't. If you get rid of all the old ones the image could improve.
Enthusiast
Buy a Diesel and run it on chip fat for 20p per litre in UK I think...Originally Posted by NSXType-R
Quiggs is right on the money. Diesels aren't bad anymore. People still think they are though. Actually, there are many tractor trailers that spew a lot of diesel fumes. Clean them up first and then worry about other stuff. They stink!
Again, the old crappy ones do. The newer ones don't. If you get rid of all the old ones the image could improve.
Used fat or new cooking oil will do
V0R5PRU7NG DUR6CH T3CHN1K
Motion & Emotion
Enthusiast
You've been watching too much Fifth Gear
Minimising losses can maximise net gains
Enthusiast
A relevant question: I am under the impression that European Diesels have DOHC technology. Is this technology really useful, or it's just there for the Marketing hype? Diesels are not high-revving engines, they don't need overhead cams. A pushrod would be cheaper, lighter and more efficient in the low-mid revs.
Minimising losses can maximise net gains
Fanatic
This is somewhat due to gearing.
Furniture
Most new diesels also have 4-valves per cylinder.
Lack of charisma can be fatal.
Visca Catalunya!
Supporting Member
Four valve technology is probably better to control the flows in the cylinder head. OHV and 4 valves haven't been mated as far as I know, even the rumoured LS2 4 valve version is still there.
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Enthusiast
the older honda civic engine (i know no codes) used SOHC and 4VPC. Older cars also used DOHC and 2VPC..
autozine.org
Furniture
Yes, but lightweight was referring to pushrods, not overhead cams.
Lack of charisma can be fatal.
Visca Catalunya!
Enthusiast
ok my apologies. I worked in the mechant navy for a while and i worked on some really big 6-cyl 4-stroke TC diesels that had a single camshaft at the side of the engine which activated 4VPC. the camshaft had 12 lobes each activating the nearest valves then the 2nd row of valves was operated by the 1sts rocker. heres a snap of that engine:
autozine.org
Furniture
No, my complaint was to clean up the lorries. Some of them are in such a bad state of repair. Their emissions are horrible. They hog the road and stink it up too while they're at it. I'm perfectly fine with diesels. I like them. The old ones really suck at the emission and they're not exactly efficient. If you cleaned them up (as in get rid of them and get newer tractor trailers that are more efficient), it could give a better image in the long run. I can imagine a street smelling like french fries. Good stuff there.
Enthusiast
Do Diesels also use Variable valve timing?
Minimising losses can maximise net gains
Enthusiast
VVT may help diesels but because they are usually TC and have direct injection (thats heteregeneous mixture control) there is less need to manage polution and air inntake from the point of view of VVT
autozine.org
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What the Governator drinks for breakfast.
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