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Subject Topic: Nissan Diesel Post ReplyPost New Topic
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lakota
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Posted: Mar 07 2008 at 4:24pm | IP Logged Quote lakota

Boomer wrote:

Why didn't they put induction hardened valves in engines when lead was used?  COST.  Lead prevented the problem of burned valves for 50,000 or so miles.  On old engines, you got a carb and valve job at about that mileage where the head was pulled, the valves ground along with the valve seat and the carburator was rebuilt.

Thus endeth the lesson from the past from the old organic chemist.

Nice post Boomer!

Back in 1953 I had a new '53 Plymouth Flat-head Cast Iron I-6 about 100 HP stock plus Dual Carbs. high compression Aluminum Edmonds milled head, mallory dual point ign., equa-flow headers with twin Smitty's glass-packs, Larger clutch and rear tires (for gearing) and lowering blocks in the rear.

 

... At the time I drove a gasoline transport 18 wheeler. We were able to collect 130 octane av-gas from the discharge manifold between the time of loading and unloading the fuel. I would put the av-gas into the Plymouth along with some motor oil to protect the valves.

I did burn some valves once. I cold out drag and out run the poor stock power-pac V-8 Chevys even without the av-gas and make their owners cry.

 

Have a good one while you can still laugh about it.. Don S..

Laws such as the use of corn ethanol are driving up the cost of living (have you been to the grocery store lately) without driving up wages. This equates to a lower standard of living thanks to Agro-lobbyists and corrupt and/or ill-informed lawmakers

 



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dannyg
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Posted: Mar 07 2008 at 9:22pm | IP Logged Quote dannyg

dannyg here the water injection kit i rember was made by eldenbrock on an ole 400 dodge motor to help out the weid lean burn

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reinerka
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Posted: Apr 08 2008 at 10:09am | IP Logged Quote reinerka

thedave360 wrote:
reinerka wrote:

Boomer wrote:
Also consider that with the new lower sulfur diesel fuel and the required emission control, diesel engines are now supposed to have significantly shorter lifetimes, comparable to that of a gasoline engine.

Where did you hear that they decrease engine life?

While it is true that the latest generation of High Performance Diesels in Europe are geared for vehicle use (= non truck use) they still last forever - irregarding of emissions control systems.

The way it emissions are achieved has nothing to do with internals of the engine. BluTec i.e. injects at the exhaust - and thus has zero effect on the engine life.

Reiner



From what I understand (and I could be wrong) the sulfur in the diesel acts as lubrication for the direct injectors. If the injectors get messed up, it can do nasty things to the engine. Also, if the sulfur still acts as a lubricant in the cylinder, reducing the amount of it in the fuel could decrease engine life.

But thats just what I have come to understand.
 

Sulfur is in the Diesel fuel because it's expensive to remove. It serves no practical purpose in the engine at all apart from generating a bad smell to recognize a Diesel engine.

Europe has had low sulfur Diesel for ages now and there is absolutely no decrease in engine life. European engines usually don't last as long as they do in the US but this has other reasons. A small engine that is constantly kept at redline will never last as long as one that is running a tad above idle.

Reiner

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