my crankshaft has a groove worn in it from a hardened rear manin seal and now after a new seal installed the groove in the crankshaft itself is stil lthere and the rig leaks so much, its undrivable. option 1-new crankshaft, option 2-super budget stroker (possibly while te motor is stil in the Jeep), option 3-engine rebuild (basic and hopefully in the Jeep), basically my crankshaft is useless. oh and im opn a paper thin budget.:flamemad::flamemad::flamemad: suggestions welcomed greatly.
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Im Screwed Bigtime
- Thread starter jk333
- Start date
Ray H
NAXJA Forum User
- Location
- Falling Waters, WV
Take a trip to NAPA or someplace and see if you can find a seal that is just a tad smaller on the inner diameter. It may be a long shot but its possible.
lawsoncl
NAXJA Forum User
- Location
- North Idaho
A different brand of seal may ride on the shaft in a slightly different place.
good ideas guys, but i really cant afford to take the chance. no offense. im a full time studnet and i work, so the Jeep is my only mode of transport. to replace the crank, im looking at $500 just for labor, and that's the cheap end. im still trying to explore options, but it really psses me off at myself, i caused this. the way i look at it is -i did a bone yeard mortor swap and it turned aout to be $1100. I could do another, but if a get a cheap mechaninc wiolling to rebuild the lower end (new rings and bearing,) in the Jeep, that might be more cost effective for me. God knows ive sunk alot of money in parts into it. and thank you for the fast erplys
imboostedru
NAXJA Forum User
- Location
- Lacey, WA
I have a crank that would just need machined. Where in WA are you?
- Location
- sacramento
buy a 4.0 at a yard for 150$ and swap it in a weekend. worth it.
funvtec
NAXJA Forum User
- Location
- oak creek, WI
they make rear main seals that are offset just for this reason.
Yucca-Man
NAXJA Member # 683
- Location
- Castle Rock, CO
Yup, that would be the Option 4 that wasn't mentioned. An offset lip or double lip seal will ride on a different part of the crank.funvtec said:
That's a much cheaper alternative than any of the previously-mentioned ones, and will afford you time to budget out that stroker.
Jim www.yuccaman.com
funvtec
NAXJA Forum User
- Location
- oak creek, WI
Yucca-Man said:
anytime i buy a RMS i buy the double lip just for cheap insurance. you dont know if you have a groove until its to late.
this is 1 job i really only want to do once.
ratherbcamping
NAXJA Forum User
- Location
- South Texas
No, pistons only come out on top. To get the crank out, you have to pull the engine or the transmission anyway.jk333 said:
tkjeeper
NAXJA Forum User
- Location
- anywhere thats free
What causes the rms to harden like this, so I can avoid it? Not to hijack.
sjkimmel99
NAXJA Forum User
- Location
- Phoenix, Az
Fel-Pro P/N BS40612, Double Lip Rear Main Crankshaft Oil Seal, 1987-2000 4.0L
http://www.partsamerica.com/productdetail.aspx?MfrCode=FEL&MfrPartNumber=BS40612
It wouldn't hurt to go take a look at one of these at the parts store to visually gauge whether the two lips will span the groove in the crank before you plop down big $ on another solution.
What causes the groove? Seals get hard as they get old? The OP is in WA so I suppose it gets cold there? A cold start every day for 10 years with an old, cold seal with old oil?
My favorite theory is that a lot of short trips without warming up the engine leaves acidic water in the crank case mixed in with the oil. The RMS actually helps keep some of that right at the seal area even when the car is off and eventually the acidic watery goo eats pits in the metal.
http://www.partsamerica.com/productdetail.aspx?MfrCode=FEL&MfrPartNumber=BS40612
It wouldn't hurt to go take a look at one of these at the parts store to visually gauge whether the two lips will span the groove in the crank before you plop down big $ on another solution.
What causes the groove? Seals get hard as they get old? The OP is in WA so I suppose it gets cold there? A cold start every day for 10 years with an old, cold seal with old oil?
My favorite theory is that a lot of short trips without warming up the engine leaves acidic water in the crank case mixed in with the oil. The RMS actually helps keep some of that right at the seal area even when the car is off and eventually the acidic watery goo eats pits in the metal.
mcnamaag
NAXJA Forum User
- Location
- Red Lion, PA
Yucca-Man said:
X3
