98 Durango --- 318 to a 360
From : plaidfro
Q: which do i want will they both fit in a 98 4x4 dodge durango -- plaidfr ----------------------------------------------------------------------- plaidfros profile http//www.usenetcars.com/member.phpuserid=182 view this thread http//www.usenetcars.com/showthread.phpt=24523 .
Replies:
From : steve lusardi
trey this is a loaded question. first there are no detergents in fuel. second there are additives and they are area specific not brand specific. in most cases the fuel at the pumps all come from the same local refinery. different states require different additive packages for ecology and weather reasons. these packages typically change throughout the year. the worst of these additives is mtbf. it is a form of ether. this stuff is bad for everything including the gasoline itself. it will cause seal deterioration fuel gelling skin damage you name it. generally gasoline having this stuff must be used within 90 days or else. next wives tale to smother is there is more power in 91 than in 87. energy content is the same. do not believe the label on the pump you could be buying anything. there are simply not enough industry controls to validate conformity and eliminate cheating. your best bet is to buy fuel from a station you have a successful history with. lastly never use more octane than your motor needs to be knock free it is a waste of money. the actual octane level the engine needs is a product of engine design with consideration of the following factors. mechanical compression ratio camshaft timing inlet and exhaust restrictions and operating temperature. steve ok folks i am sure this one has been beaten into the ground many times. however i am now on a quest. sort of. a friend of mine had an interesting view to share on the topic of 87 octane vs 91 octane low vs high below is his response to my statement which is below his. for the record he has a nissan sentra spec-v his wife has a dodge noen both run 91 i have a dodge dakota and the bike i was referring to in my post was my old suzuki sv650s. i run 87 in both as per their owners manuals i know there are a few guys here that work for the oil companies. do you happen to know where i might find in writing on a fuel companys web site that states that the only difference is the octane rating and not the detergents or proof stating otherwise i will be researching as best i can during the weekend but any direction would be appreciated. ------------------------------------------------ yes ive read some very very extensive articles on gasoline octane. heres a few notes - 91 will always run better than 87. - 91 from the different gas companies is all drastically different - running 91 on a car that doesnt need it will not damage the car. it will make it run just the same as what the car is tuned for but it will allow an extra margin of safety from unpleasant car conditions i.e. heat soaked radiator causing overheating creating knock conditions 91 will not require the ecu to compensate nearly as much or as early as if it was on 87 - 91 octane at most gas stations will contain extra detergents and cleaners which will prevent your injectors from clogging up as easy keep the valves cleaner and keep all related fuel lines/pump cleaner and free of debris. - 91 octane at 76 or shell is considered the absolute cream of the crop for southern california. the difference between these two and cheveron/exxon/mobil/generic brand is huge. some stock cars are noticing a 5-15% power drop from just using the wrong brand of 91 octane. - for reference your air conditioner will sap around 10% of your cars horsepower when turned on. - also for the record if you do the math with a 10-11 gallon fillup thats only an extra $2 each time you fill up 1-2 times a week means an extra $8-$16 a month for a cleaner engine and safer driving condition. thats worth the extra cost in my book. ----------------- original message ----------------- from trey date jun 3 2005 418 pm have you actually read up on what makes 91 91 or what the three grades do if the car is not designed for it the higher grade can actually damage teh car. my truck for example it notes not to run 91. 91 can degrade performance in a car designed for 87. some cars like your spec-v spec that it will run on 87 but to use 89 for best performance. in that case the car will run on 87 but the knock sensor will retard the timing reducing power to keep it from knocking. and is able to advance the timing with the 89. i remember my motorcycle actually felt down on power when i ran 91 it actually ran better on 87. as for being negligibly more expensive than 87 its about a .$20/gallon difference. doesnt sound like much but when your buying 20 gallons at a time and get 12 mpg it adds up very fast. thats an extra $200 a year im just blowing out the tailpipe of the truck. .
From : tbone
tbone wrote the term long or short does not refer to the length of the block it refers to the completeness of the build. a short block is just the block and its internal components pistons connecting rods crank but does not include the cam pushrods heads intake ... a long block is more complete and includes most of what is missing from the short block but is still usually missing a few things and is not ready to run. what he said. your decision should be based on a lot of things. cost is only one of them. but also what are you looking to do trailer towing vs. drag strip runs vs. daily commuting. one of these years mine will need a rebuild. or ill want to do it for better performance. its only got 70k now so no rush. id use an essentially stock long block with cast or hypereutectic pistons and a slightly better cam for more torque. then add as set of edelbrocks new heads and probably the stock but slightly improved beer barrel intake. that should make a real stump puller that will last another 100k+ miles and not cost a fortune. with what you are going to do wouldnt you be better off starting with a short block -- if at first you dont succeed youre not cut out for skydiving .
From : bob
while the engine will fit there are some differences. the two most important ones are the computer and the fact that the 360 is externally balanced while the 318 is internally balanced. the fuel curves are different for the 360 and the 318 computer may not give you satisfactory performance and im not sure about the legal situation of swapping the computer from a different vehicle. as for the balancing iirc you will need a torque converter balanced for the 360. -- if at first you dont succeed youre not cut out for skydiving i own a 1998 dodge durango with a 318 with almost 200k miles. i really want to put in a 360. have any of you done this before i am trying to find out what snags i am going to encounter doing this. my biggest concern is the fuel supply and computer. i am pretty certain that the 360 will go in place of the 318 pretty easily. if any of you have any info or websites you could help me with it would be greatly appreciated. thanks plaidfro at hotmail dot com -- plaidfro ------------------------------------------------------------------------ plaidfros profile http//www.usenetcars.com/member.phpuserid=1829 view this thread http//www.usenetcars.com/showthread.phpt=245231 .
From : plaidfro
dodge durango 99 5.9l converted to run on lpg single point. when running on lpg injectors are disconnected to prevent them from working or rather the common positive lead is routed thru resistor so that voltage drop on injectors is insufficient for them to operate and naturally pcm complains about open injector circuits. alldata is pretty vague about p0201-p0208 codes and only says if induction kick is not detected pcm will set the code. apparently it checks not just for correct resistance but also for the inductive kick. anybody knows how to properly emulate injectors on this engine peter .
From : trey
when i go to the gas station it holds entirely too much fuel and cost too much money. im thinking of adding a k&n fuel filter i hear it lets more diesel pass more quickly than the mopar one does. just get one of these http//www.transferflow.com/html/crossthebedtanks0.html and then you just have to fill up three times a year. .