93 BMW Top End Rebuild.. - Ranger-Forums - The Ultimate Ford Ranger Resource


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  #1  
Old 08-24-2008
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Icon2 93 BMW Top End Rebuild..

So my headgasket decided to take a crap on me @ 252,052k miles so i figured it would be a good time to freshen things up...here is part one of the tear down..






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Old 08-24-2008
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Better replace that timing chain while your there
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Old 08-24-2008
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+1 on the chain, they rarely fail, but at 252k miles..i would. Welcome to workin on german cars! lol
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Old 08-24-2008
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chains and valves will be replaced...i know i have 1 or 2 bad valves so im going to replace both..as well as all seals and gaskets...im going to get the head machined aswell..
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Old 08-25-2008
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what kind of machining prices you got near you. ( resurfacing head, checking head for cracks?)
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Old 08-26-2008
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what kind of machining prices you got near you. ( resurfacing head, checking head for cracks?)
don't know yet my buddy's dad has a machine shop right here in griffin and im sure he wont bend me over..lol
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Old 08-26-2008
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Wernt long after you bought the car it decided to **** the bed....Your going to have alot of "I Told Ya So" posts here ill bet...



Good Luck!
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Old 08-28-2008
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August 28th 2008 Removed head and inspected damage....taking to my buddys machine shop tomorrow to have it inspected and if its fixable i will have it machined, new valves, throughly cleaned, and a port and polish






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Old 08-28-2008
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Uh oh!!!! I see Bosch platinum 4s. People are going to start hating on it!!!!LOL

Nice work. I would be a little hesitant to take on a project like that. Get a header in there while you have it unbolted.
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Old 08-28-2008
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Who in thier right mind.. tears motors apart in thier bare feet?

Lol.. Glad its comin along man.. good luck!
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Old 08-28-2008
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Can that head be decked? Doesn't look like you can, but if you can, I'd suggest you do it. I'd also suggest a four angle valve job, new intake valves (the others look pretty trashed but probably can be grinded w/ the exception of the damaged pair); also have check the guides for ovaling (typically happens in high mile bmw's. Replace all seals and you're good to put it all back together. If you have $$$ to spend, I'd go for a RRFPR, performance chip, injector swap, cam swap (M52 and S52 cams should fit if I remember correctly or you can get re-grinds if you are on a budget) and to top it all off, I'd go with a de silva or conforti performance chip. If you wanna go all the way, lightened fly wheel and performance puck. Maybe I got carried away but if I had the $$$, probably what I'd do.

How's the rings in the bottom end, what about rod bearings and rods.
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Old 08-28-2008
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Originally Posted by Hayn Time View Post
Can that head be decked? Doesn't look like you can, but if you can, I'd suggest you do it. I'd also suggest a four angle valve job, new intake valves (the others look pretty trashed but probably can be grinded w/ the exception of the damaged pair); also have check the guides for ovaling (typically happens in high mile bmw's. Replace all seals and you're good to put it all back together. If you have $$$ to spend, I'd go for a RRFPR, performance chip, injector swap, cam swap (M52 and S52 cams should fit if I remember correctly or you can get re-grinds if you are on a budget) and to top it all off, I'd go with a de silva or conforti performance chip. If you wanna go all the way, lightened fly wheel and performance puck. Maybe I got carried away but if I had the $$$, probably what I'd do.

How's the rings in the bottom end, what about rod bearings and rods.
\

all valves are being replaced...rings are good in the bottom end bearings will be checked..all new seals and gaskets will be installed...i already have a turner motorsports performance chip...upgraded clutch will be later down the road as well as a lighter flywheel...but right now im just trying to get it running again
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Old 08-28-2008
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Cleaned up the pistons and head gasket flange
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Old 08-28-2008
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Who in thier right mind.. tears motors apart in thier bare feet?

Lol.. Glad its comin along man.. good luck!
i rebuilt my truck mostly barefoot..frame swap etc etc...lol
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Old 08-28-2008
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\

all valves are being replaced...rings are good in the bottom end bearings will be checked..all new seals and gaskets will be installed...i already have a turner motorsports performance chip...upgraded clutch will be later down the road as well as a lighter flywheel...but right now im just trying to get it running again
Got ya, been in that boat with a wounded bimmer. My suggestion would be to drop your oil pan (especially if you used spray cleaner to clean up the pistons) to get all the crud and cleaner out.
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Old 08-28-2008
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We've rebuilt prolly 4 of those heads at my dad's shop in the last 2 weeks. There fairly simple. Pretty quick rebuild.
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Old 08-29-2008
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We've rebuilt prolly 4 of those heads at my dad's shop in the last 2 weeks. There fairly simple. Pretty quick rebuild.
have any idea whats it going to run me getting it rebuilt?
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Old 08-29-2008
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Our (6cyl 24 valve) valve job fee is $160, that includes grinding the seats and valves, resurfacing, cold acid tanking and sand blasting clean. Im not sure what labor cost are in your area but thats our standard fee, thats just for labor. No valves, gaskets or seals.
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  #19  
Old 08-29-2008
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Well the head is cracked..not warped but cracked..now the hunt begins for a new head..got the bottom end looked at and was told to drop the pan and change the oil about 3 or 4 times to get all the water out..
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Old 08-29-2008
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Ouch, well its not an expensive used head (in my area).
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Old 08-29-2008
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Ouch, well its not an expensive used head (in my area).
here either its just a matter of finding one that hasn't been abused
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Old 08-29-2008
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That shouldn't be to hard. There good, strong heads.
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Old 08-29-2008
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That shouldn't be to hard. There good, strong heads.
i think its a preexisting condition because my car has been eating coolant slowly since ive had it so i don't think its anything i have done..i will get it fixed sooner or later..haha im happy the ranger is 100% complete now...
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Old 08-29-2008
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Ya, I bought a 99 cougar for that reason. I needed something to drive while the ranger was down.
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  #25  
Old 08-29-2008
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wondering if 2.8L M52 head would also work (I think so). I think the M3 S52 head would work as well. Heck it might be cheaper to look for a replacement engine. Here is a link for some spare parts: http://www.theeurodepot.com/index.php?id=6
best guys on the east coast. I've used em when I can't reach my hook ups in L.A., San Fran or Washington.
If you live down south, see if a run to Alabama wouldn't put you out and check out Vines. They usually have an abundance of E36 stuff. Good luck to ya!
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