WyoCherokee Posted December 5, 2008 Posted December 5, 2008 well my tired ol 88 2.5 is pushin 265,000 miles, should i be gettin leary of it? last time i checked compression all were around 125 if i member correctly, i am kinda concerned cause it makes 2 1500 miles trips every year and i really don't feel like having it blow halfway home.
SoloCamo Posted December 5, 2008 Posted December 5, 2008 As long as it's got good compression and is running well, don't worry about it. Mileage is just a number, not a benchmark of when to replace it. Keep the fluids clean and keep up on the maintenance and it will probably roll over 300k without a hitch, especially if it's mostly highway mileage. :chillin:
carnuck Posted December 5, 2008 Posted December 5, 2008 I would consider a new timing chain. It brought my 250,000 mile motor roaring back to life when I went to Ouray in '02. It's beyond 300,000 miles now and has been transplanted into my son's offroad buggy.
project88mj Posted December 5, 2008 Posted December 5, 2008 define: "roaring back to life" please i got 228k on a 4.0 and it roar is a kittens meow now
FxRacing282 Posted December 5, 2008 Posted December 5, 2008 well my tired ol 88 2.5 is pushin 265,000 miles, should i be gettin leary of it? last time i checked compression all were around 125 if i member correctly, i am kinda concerned cause it makes 2 1500 miles trips every year and i really don't feel like having it blow halfway home. well, its hard saying without hearing the motor. if its got no knocks or rattles or bangs then yeah. probabally good to go. have you though of running a thicker oil? maybe 20-50?
carnuck Posted December 5, 2008 Posted December 5, 2008 If the timing chain has a lot of slack, then a new chain will put the cam timing back where it is supposed to be. Cam timing affects power greatly. (mine still wasn't burning oil either. The blowby disappeared at the same time. I figure it was mostly from the chain hitting the timing cover as it was noisy!)
project88mj Posted December 5, 2008 Posted December 5, 2008 if... youcould put the increase in to numbers what would guess?
WyoCherokee Posted December 5, 2008 Author Posted December 5, 2008 well my tired ol 88 2.5 is pushin 265,000 miles, should i be gettin leary of it? last time i checked compression all were around 125 if i member correctly, i am kinda concerned cause it makes 2 1500 miles trips every year and i really don't feel like having it blow halfway home. well, its hard saying without hearing the motor. if its got no knocks or rattles or bangs then yeah. probabally good to go. have you though of running a thicker oil? maybe 20-50? it has some sort of a grinding noise but i don't know where it is coming from. hopefully its just an idler
project88mj Posted December 5, 2008 Posted December 5, 2008 cool not sure how to check the the timming chain? :dunno: can i do while the I6 is still in the mj?
carnuck Posted December 5, 2008 Posted December 5, 2008 Take off the dist cap and set the timing mark to TDC. Rotate up to zero, then watch rotor as you rotate the other way till it moves. Over 15 degrees means time for a new chain.
manche Posted December 6, 2008 Posted December 6, 2008 these engines will not die i got 287,000 on my 2.5 and runs smooth
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