Lean Burn Conversion 101

Jack Meoff

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The questions about doing lean burn conversions correctly on our rides continually comes up.....so why not go to the experts
In this case...expert. Mr. Rick Ehrenberg from Mopar Action.
One of our loyal members NoCar340 was kind enough to scan the article from Mopar Action Magazine "Trash That Lean Burn"
And Mr. Ehrenberg has generously given me consent to post it here.
Guess no more folks....here's the real deal.


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Jack Meoff

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This article and all of it's contents are

© 1995 by Harris Publications, Inc., and Richard Ehrenberg. All rights reserved. Posted here by permission of the copyright holders.

And is used with the kind permission of Rick Ehrenberg and the generous folks at

http://moparaction.com/
 
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NoCar340

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I will re-scan the rather hideous 3rd page as soon as I can. I was busier than a one-armed fiddler with crabs while I was scanning (at work) and didn't notice how bad it was until I was back home and cropping/desaturating the scans. Sorry about that, but I think it's good enough to muddle through if you look closely.
 

slant6billy

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That is awesome. I forgot who may have stated it in the past, but leave the lean burn computer on your air cleaner (if you can) with a vacuum line going nowwhere (plugged of course). The inspectors (emission natzis) may be more forgiving- seeing that mopar brain still in place. Fortunately, my state only sniffs the pipe for pre OBD2 cars. They do sniff under the hood for hydrocarbons- that is another trick for another thread.
 

NoCar340

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Heh... "Emissions testing" here amounts to a cop looking underneath your car to see if you have cats, and even then only if he's stopped you for a different exhaust-related offense (usually noise). :eusa_dance:
 

Monkeyed

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Heh... "Emissions testing" here amounts to a cop looking underneath your car to see if you have cats, and even then only if he's stopped you for a different exhaust-related offense (usually noise). :eusa_dance:

^this, in 25 years of driving, over a half million miles, easily, never once had them look. about the only way they'd get you for that is you had it up in the air at a garage somewhere, with nothing that looks like a cat under there, and flat out told them that you drive it on the street like that constantly, you don't plan on ever putting one on, and that there's nothing anyone can do about it. EVEN THEN they'd have to be a busy body who can't stand you enough to tell someone, who would have to tell someone else, it'd take years for it to catch up and bite you.

not that it matters most people around here wouldn't dream of turning a wrench, let alone going out of their way to violate a federal law for little to no personal gain anyway.
 

alf44

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here in minnesota ,at least in my county, there are no testing at all. you can drive just about anything from a new car to a old rat rod and not be tested. ive never had any of my 30 plus cars tested.
 

slant6billy

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That's why it is all BS anyway. My 94 jeep Grand Cherokee had the 5.2 and me as the 3rd owner. It had serious blow by at 160K. So bad, that the vac line just pass of the air filter was throwing oil. So my issue was 2 fold. I blocked the PCV and then got an oil leak. fixed the leak and back around again. Now, this was when the State of NJ would put your drive wheels on a dyno and pipe sniff. Most/ infact all 5.2 were ALL Wheel Drive with an NP249 transfercase. 4H-N-4L. I upgraded to an NP242 with 2H-4PT- 4FT-N-4L, but would switch the bezel and jumper for inspection. Putting a Cat on a car decreases CO but increases CO2---- the greenhouse gas is CO2. So in trying to "bandaid" the situation.........the elected folks with $$$ making agendas waged war on the "old car". Everybody hate old cars! They pollute and are not safe. I had heard that all through school. It equate it to fat chicks who shame skinny girls. In this PC world, you can only make fun of guys with mullets (me) and skinny chicks. I happen to like Skinny chicks. So if you see my 79 (after paint- not yet unfortunately), my "Lean burn delete", my mullet..........I might just be cruising with a car load of skinny chicks who were shamed by fat girls.
 

Jack Meoff

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That's why it is all BS anyway. My 94 jeep Grand Cherokee had the 5.2 and me as the 3rd owner. It had serious blow by at 160K. So bad, that the vac line just pass of the air filter was throwing oil. So my issue was 2 fold. I blocked the PCV and then got an oil leak. fixed the leak and back around again. Now, this was when the State of NJ would put your drive wheels on a dyno and pipe sniff. Most/ infact all 5.2 were ALL Wheel Drive with an NP249 transfercase. 4H-N-4L. I upgraded to an NP242 with 2H-4PT- 4FT-N-4L, but would switch the bezel and jumper for inspection. Putting a Cat on a car decreases CO but increases CO2---- the greenhouse gas is CO2. So in trying to "bandaid" the situation.........the elected folks with $$$ making agendas waged war on the "old car". Everybody hate old cars! They pollute and are not safe. I had heard that all through school. It equate it to fat chicks who shame skinny girls. In this PC world, you can only make fun of guys with mullets (me) and skinny chicks. I happen to like Skinny chicks. So if you see my 79 (after paint- not yet unfortunately), my "Lean burn delete", my mullet..........I might just be cruising with a car load of skinny chicks who were shamed by fat girls.


Don't forget the pics.....
 

NoCar340

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I've never been tested, and was "threatened" only once by a cop that knew me. That was because the Pontiac 400 originally in one of my Trans Ams was spewing oil and smoke so badly out the tailpipes and every other orificce (even the fender vents!) that I'd gotten some on his windshield while passing. He told me to get my engine rebuilt or he'd call the DNR (which is actually a nasty threat in MI--state cops wish they had that kind of authority).

Here they only harass lifted trucks driven by idiots... which is to say, "guys in their 20s with obnoxious glasspacks manually shifting mid-'90s K1500s on 35s". Even when I was driving my '77 400HP Cordoba on open headers, I got a ticket for loud exhaust but not one word about the converter(s).
 

8v-of-fury

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This is why my daily, my brothers daily and my gf's daily cars are all Diesel ;) Visual inspection for the win. Although, they are two 84's and an 87, so it doesn't matter anyhow. lol
 
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