New Dodge Ram questions.
From : Annonymous
Q: on fri 15 sep 2006 224257 gmt denny wddodge@woh.rr.com wrote on 14 sep 2006 104850 -0700 fp@odonnelldrg.com wrote i have a 2004 durango hemi and a 2004 ram 1500 hemi. when the tailpipe goes under water both vehicles start to blow steam and the engine light comes on. last week just after leaving the engine runnig while i loaded the boat - the valves started knocking really loud and now i have a hefty repair bill to reinstall new valve lifters. does anyone have any ideas why none of my other trucks have ever had this problem. im gonna hate myself for this...... why you did not state is the exhaust was stock or not but i have a theory here as to what likely may have happened. and as usual your theory is a tad bit far-fetched.. not at all. it is very logical and bases on the physics of expanding and cooling gasses. when your engine idles there is actaully a negative pulse several times a second in the exhaust system due to low flow and a combination of sonic wave travel and the rapid cooling of the exhaust gas. im sure you read this in a book somew
Replies:
From : fat ass fred
here is another chance for you to hitch your carrot wagon to a winning team. at 415pm the pats begin to beat the jets. roy and in another couple o weeks they have the bengals. well see who has the last chirp then.. g denny so after the pats beat the bengals you are going to jump on the wagon might want to jump now and save tourself some pain.g didnt i see the bengals qb going off on his back last week roy .
From : moparman
on sun 17 sep 2006 064104 -0600 budd cochran mr-d150@preciscom spam.net wrote to paraphrase ol william oh what fools these mortals be where when first themselves they seek to deceive -- budd cochran what in the hell is the difference of paraphrasing shakespear this poorly and misquoting the bible beekeep .
From : moparman
carolina watercraft works cooltoys@bellsouth.net wrote i think he meant i had a point...not snohole. he bir was replying to your reply to snojob. so the he in this case is snojob. - .
From : Annonymous
to paraphrase ol william oh what fools these mortals be where when first themselves they seek to deceive -- budd cochran john 316-17 ephesians 28-9 romans 323 623 our constitution was made only for a moral and religious people. it is wholly inadequate for the government of any other. john adams having spent 10 years working with exhaust systems engineers with arvin industries i can say based on what i learned from them youre full of it. the only exhaust systems with definite negative pressure at the tips belong to engines with high overlap cams or burnt valves. not to mention the vacuum effect and its duration are still insufficient to suck up more than a couple ounces of water and no farther than the first upward turn of the pipes. -- budd cochran yer wastin yer time budd... he knows all about physics ;^ mike john 316-17 ephesians 28-9 romans 323 623 our constitution was made only for a moral and religious people. it is wholly inadequate for the government of any other. john adams on 14 sep 2006 104850 -0700 fp@odonnelldrg.com wrote i have a 2004 durango hemi and a 2004 ram 1500 hemi. when the tailpipe goes under water both vehicles start to blow steam and the engine light comes on. last week just after leaving the engine runnig while i loaded the boat - the valves started knocking really loud and now i have a hefty repair bill to reinstall new valve lifters. does anyone have any ideas why none of my other trucks have ever had this problem. you did not state is the exhaust was stock or not but i have a theory here as to what likely may have happened. when your engine idles there is actaully a negative pulse several times a second in the exhaust system due to low flow and a combination of sonic wave travel and the rapid cooling of the exhaust gas. when you placed tailpipe in the water it started to ingest a little water during the negative pulses and it worked its way up into the system further which further cooled the pipes and gas and increased the draw of water into system and it may have gotten into engine itself. if you have a dual exhaust it would actual tend to be more prone to this yet because the quicker expansion and cooling of gas at a idle and stronger negative pressure pulses. expensive lesson for sure. if you want to avoid this in future keep tail pipes out of water and place a restrictor in pipes durring this time so the a higher pressure is maintained during idle cycle which reduce the negative pulse to zero. if you have duals go back to a stock exhaust. ----------------- thesnoman.com -- posted via a free usenet account from http//www.tera.com -- posted via a free usenet account from http//www.tera.com .
From : moparman
on sat 16 sep 2006 010938 gmt mike mik@localnet.com wrote people such as yourself tends to hurt those that are asking for a solution or cause to begin with and if you do not understand the subject completely do not comment on it. hole!!! i dont believe you posted this!! also dont believe i missed it now how about following the only worthwhile thing youve posted! oh you can answer those questions regarding the v10 anytime a bunch of us are waiting. while i have your attention ya never got back to me regards your sig. i guess you must like it. ----------------- theassholeman.com .
From : chris thompson
on sat 16 sep 2006 010938 gmt mike mik@localnet.com wrote sadly your hypothesis is badly flawed in spite of your assumed knowledge of the physics of expanding and cooling gases which actually have little or nothing to do with your theory the said part is you are wrong but since you do not understand the dynamics involved your figure it is bs no that would be you. first yes there is a slight negative pulse however this pulse is grossly outweighed by the positive flow of hot exhaust gases. if your hypothesis were true and an exhaust system on an otherwise healthy engine could indeed ingest water how could the exhaust gases ever escape to overcome the negative pressure yet miraculously somehow they do. you are missing the point here. it is a cycle that purculates the water up the exhaiut system. the flow of hot gasses at a idle is very very low. because of to reasons one is that most of the energy is caputred in the engine via expansion in the cylinder and the rest of most of the heat is lost to engine block and exhaust so the air flow is very low. the net positive air flow is about 15 to 20 cfm at atmospheric pressure or about 10 cfm per pipe with duals. the peak pulse velocity is about 7 fps little more than a light breeze when pulse is first started but after pulse a negative wave it created is back pressure is low. this is because the average pressure is so low that it allows a negative cycle to form this creates a vacum that sucks water up and the negative pulse is longer in duration so it travels up pipe and is not expeled unless volume of gas in pipe is increase to a point that the average pressure is high enough that when the negative impluse cycle starts that it does not go negative enough to offset the postive pressure in pipe in relation to atmospheric pressure. simple physics here but too simple for some. and far too complicated for you. if you have 100 cfm demonstrative figure going into an engine expanded by heating to 300 cfm demonstrative figure how many cfm will be exiting the exhaust valve the exhaust tip also to test the veracity of your hypothesis travel to any lake nearby your home and look for an old fashioned inboard runabout. somehow they manage to avoid water ingestion without the need of restrictors or any other such nonsense. a inboard runabout has a exhaust system baffled and designed to be under water duh.... a car does not. rotflmbo!!!!!!! the exhausts on older inboards from the 20s to the 70s had one thing in common water in the pipe. no baffles just water-cooled exhaust. your really should take the time to review your theories before exposing them to public ridicule. you should take time to read more and learn before you shoot down something you do not understand. you know i worked on the gps system proto types almost 30 years ago when government tested it under the milstar projet name. i can tell you exactly how it works and why because the theory of operation has not changed to this day on it though the packaging has. youcan kinda thank me if you use one today in any form becuase myself with others worked the bugs out if it back then there are three types of people in groups those that want to share knowledge myself those that do not know and want to attack others or cause trouble on things they do not understand for a notch on their holster you and those wanting to find the real reasons way. people such as yourself tends to hurt those that are asking for a solution or cause to begin with and if you do not understand the subject completely do not comment on it. ----------------- thesnoman.com so . . .you claim to have worked on the gps system. big deal! i worked alongside a future vice president for a few hours. big deal. we were both in the national guard at the time. big deal. at the same time i was working with arvin engineers in the franklin indiana plant and asking questions about how exhaust systems work. -- budd cochran john 316-17 ephesians 28-9 romans 323 623 our constitution was made only for a moral and religious people. it is wholly inadequate for the government of any other. john adams -- posted via a free usenet account from http//www.tera.com .
From : carolina watercraft works
snoman wrote on 14 sep 2006 104850 -0700 fp@odonnelldrg.com wrote i have a 2004 durango hemi and a 2004 ram 1500 hemi. when the tailpipe goes under water both vehicles start to blow steam and the engine light comes on. last week just after leaving the engine runnig while i loaded the boat - the valves started knocking really loud and now i have a hefty repair bill to reinstall new valve lifters. does anyone have any ideas why none of my other trucks have ever had this problem. you did not state is the exhaust was stock or not but i have a theory here as to what likely may have happened. when your engine idles there is actaully a negative pulse several times a second in the exhaust system due to low flow and a combination of sonic wave travel and the rapid cooling of the exhaust gas. when you placed tailpipe in the water it started to ingest a little water during the negative pulses and it worked its way up into the system further which further cooled the pipes and gas and increased the draw of water into system and it may have gotten into engine itself. if you have a dual exhaust it would actual tend to be more prone to this yet because the quicker expansion and cooling of gas at a idle and stronger negative pressure pulses. expensive lesson for sure. if you want to avoid this in future keep tail pipes out of water and place a restrictor in pipes durring this time so the a higher pressure is maintained during idle cycle which reduce the negative pulse to zero. if you have duals go back to a stock exhaust. ----------------- thesnoman.com i dont see how water can make its way through the muffler and cat all the way into the engine. even if it made it a little ways up looks like the heat from the pipe would turn the water into steam. scott .
From : roy
thanks for everyones responses. the main culprit here was a foam like gasket that had rotted away. this gasket was between the bottom of the ac where the water collects and then goes throught the firewall with a tube and the firewall. the tube was too short story of my life... and the water would run out to the end of the tube and some of it would drip down as intended but most would come back on the outside bottom of the tube and through the gasket into the cab and onto the floor. the thing that fixed it was putting a two to two and a half foot section of 5/8 rubber heater hose on the tube with a hose clamp and then run it down near the swing arm. i also put some 3m window weld around and between the ac and the firewall where it goes through just for good measure. although i dont think theres much chance of water getting back in there anymore. this had been going on for about three years now..... i had one of those homer simpson doh! moments after realizing how simple a fix this was... hope this helps somebody out there! i have a 96 1500. ive pulled away the carpet and rubber padding that goes up behind the dash. right where the ac tray collection area goes throught the firewall there is a little trickle of water flowing down. i imagine that i can get some silicone and seal it up and it will stop a little water is still coming out the drain tube on the engine side of the firewall. there is also cold air coming out the tube as well. any thoughts .
From : advocate
on fri 15 sep 2006 224257 gmt denny wddodge@woh.rr.com wrote on 14 sep 2006 104850 -0700 fp@odonnelldrg.com wrote i have a 2004 durango hemi and a 2004 ram 1500 hemi. when the tailpipe goes under water both vehicles start to blow steam and the engine light comes on. last week just after leaving the engine runnig while i loaded the boat - the valves started knocking really loud and now i have a hefty repair bill to reinstall new valve lifters. does anyone have any ideas why none of my other trucks have ever had this problem. im gonna hate myself for this...... why you did not state is the exhaust was stock or not but i have a theory here as to what likely may have happened. and as usual your theory is a tad bit far-fetched.. not at all. it is very logical and bases on the physics of expanding and cooling gasses. when your engine idles there is actaully a negative pulse several times a second in the exhaust system due to low flow and a combination of sonic wave travel and the rapid cooling of the exhaust gas. snoman sadly your hypothesis is badly flawed in spite of your assumed knowledge of the physics of expanding and cooling gases which actually have little or nothing to do with your theory first yes there is a slight negative pulse however this pulse is grossly outweighed by the positive flow of hot exhaust gases. if your hypothesis were true and an exhaust system on an otherwise healthy engine could indeed ingest water how could the exhaust gases ever escape to overcome the negative pressure yet miraculously somehow they do. also to test the veracity of your hypothesis travel to any lake nearby your home and look for an old fashioned inboard runabout. somehow they manage to avoid water ingestion without the need of restrictors or any other such nonsense. your really should take the time to review your theories before exposing them to public ridicule. btw the oil starvation theory in a later post sounds the most plausible to me but we dont have enough info to make an intelligent diagnosis. mike .
From : the addisons
on sat 16 sep 2006 010938 gmt mike mik@localnet.com wrote sadly your hypothesis is badly flawed in spite of your assumed knowledge of the physics of expanding and cooling gases which actually have little or nothing to do with your theory the said part is you are wrong but since you do not understand the dynamics involved your figure it is bs first yes there is a slight negative pulse however this pulse is grossly outweighed by the positive flow of hot exhaust gases. if your hypothesis were true and an exhaust system on an otherwise healthy engine could indeed ingest water how could the exhaust gases ever escape to overcome the negative pressure yet miraculously somehow they do. you are missing the point here. it is a cycle that purculates the water up the exhaiut system. the flow of hot gasses at a idle is very very low. because of to reasons one is that most of the energy is caputred in the engine via expansion in the cylinder and the rest of most of the heat is lost to engine block and exhaust so the air flow is very low. the net positive air flow is about 15 to 20 cfm at atmospheric pressure or about 10 cfm per pipe with duals. the peak pulse velocity is about 7 fps little more than a light breeze when pulse is first started but after pulse a negative wave it created is back pressure is low. this is because the average pressure is so low that it allows a negative cycle to form this creates a vacum that sucks water up and the negative pulse is longer in duration so it travels up pipe and is not expeled unless volume of gas in pipe is increase to a point that the average pressure is high enough that when the negative impluse cycle starts that it does not go negative enough to offset the postive pressure in pipe in relation to atmospheric pressure. simple physics here but too simple for some. also to test the veracity of your hypothesis travel to any lake nearby your home and look for an old fashioned inboard runabout. somehow they manage to avoid water ingestion without the need of restrictors or any other such nonsense. a inboard runabout has a exhaust system baffled and designed to be under water duh.... a car does not. your really should take the time to review your theories before exposing them to public ridicule. you should take time to read more and learn before you shoot down something you do not understand. you know i worked on the gps system proto types almost 30 years ago when government tested it under the milstar projet name. i can tell you exactly how it works and why because the theory of operation has not changed to this day on it though the packaging has. youcan kinda thank me if you use one today in any form becuase myself with others worked the bugs out if it back then there are three types of people in groups those that want to share knowledge myself those that do not know and want to attack others or cause trouble on things they do not understand for a notch on their holster you and those wanting to find the real reasons way. people such as yourself tends to hurt those that are asking for a solution or cause to begin with and if you do not understand the subject completely do not comment on it. ----------------- thesnoman.com .