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  #16 (permalink)  
Old 06-24-2005, 10:05 AM
ChevelleSS_LS6's Avatar
Jeep XJ and a Javelin
 
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Quote:
Originally Posted by Rick WI
You can run much leaner than 14.7:1 on the hwy under low/no load cruising conditions. I will typically tune into the 15.2 -15.5 range under these conditions. True "lean burn" engines can get into the 17:1 to 18:1 range. Your not going to do that with a carb or old style bathtub cylinder head though.
/\how would you change air.fuel ratio with out retuning the carb?

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  #17 (permalink)  
Old 06-25-2005, 01:51 AM
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Quote:
Originally Posted by Rick WI
You can run much leaner than 14.7:1 on the hwy under low/no load cruising conditions. I will typically tune into the 15.2 -15.5 range under these conditions. True "lean burn" engines can get into the 17:1 to 18:1 range. Your not going to do that with a carb or old style bathtub cylinder head though.
I agree that 15+ is possible although I do not consider 15.5 "much leaner" And I have not seen the research on 18:1 engines so I will take your word on that but I would think it is only attainable on engines with small displacement due to the physics of cylinder filling and flame propogation. Even 18:1 is nowhere near a 200 mpg engine, maybe 50 mpg depending on the size of the vehicle and engine.
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  #18 (permalink)  
Old 07-10-2005, 11:33 PM
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hahahah

those things crumple like aluminum foil in a v-8........(trust me...it happened)


i had to rebuild my engine

pissed me off
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  #19 (permalink)  
Old 07-11-2005, 03:21 AM
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Originally Posted by 742617000027
hahahah

those things crumple like aluminum foil in a v-8........(trust me...it happened)


i had to rebuild my engine

pissed me off
What on earth are you talking about?
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  #20 (permalink)  
Old 07-11-2005, 10:14 AM
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AKA:"SLOWRIDE66"take it easy!
 
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i do belive willowbilly 3 is talking about that tornado thinga migia anyway..
since were in gas milage...
tell me what keep the industry from making a lock up differental ?
if you got up to hyway speeds then the trans went into lock up and the rear went into a straight drive lock up....

i know you would need some serious power and torque but ..i read somewhere that if your car dident have a differental it would not be able to go slower than 50 mph and top out at close to 200mph
any validity in this ??

ive been pondering this for years
(sorry my spellcheckers not working)

sr66
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  #21 (permalink)  
Old 07-11-2005, 10:32 AM
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NXS NXS is offline
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Quote:
Originally Posted by Rick WI
You can run much leaner than 14.7:1 on the hwy under low/no load cruising conditions. I will typically tune into the 15.2 -15.5 range under these conditions. True "lean burn" engines can get into the 17:1 to 18:1 range. Your not going to do that with a carb or old style bathtub cylinder head though.
honda is working on a lean burn 22:1
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