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Engine Rebuil topic

Mark G

By Mark G
in Oilheads

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Mark G

Mark G

Posted
Posted

Been looking all day, are there any engine repair/rebuild topics for an RT1150? The search function on this forum is a little weak.

 

Looking for proprietary tools list, recommended replacement parts since the engine will be open...etc. I've decided it's winter, one of my cam chain guides has busted and it's going to get replaced for a lot less than $3,500 bucks....i think :grin:

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dan cata

dan cata

Posted
Posted

I don't know of such a topic on this forum (I am ~ new around here) but you can search advrider.com for such.

 

And if it's not too much to ask, take pics of everything you do and post them here ;)

 

It's going to be very interesting :D

 

Dan.

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kmac

kmac

Posted
Posted

If i was going to go to the trouble of opening up my motor, and could afford it at all i would at least do all bearing, seals, and rings. Maybe pistons and bore as well. None of that i dont think is too expensive. Although that would depend on how many miles you engine has on it. If it is fairly low mile and it is just a broken cam chain guide/tensioner you may just wanna save the money and fix what is broken.

 

My question for the gurus here would be, DOES the cases of the motor need to be split to fix a guide/tensioner, or do you just have to pull the heads and barrels? It seems like the cam chain goes into the block, obviously, but the guides and tensioners are inside the barrels, aren't they?

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Skywagon

Skywagon

Posted
Posted

Mark...I don't know the answer to your question, but you might look up the various parts a site that has fiche and parts to understand the price of parts only. Like KMac suggested...If I were going to tear it down it would get new rings, bearings, of course gaskets, cylinders honed, valve work done, etc. Then you easily have a 100k engine.

 

 

http://www.realoem.com/bmw/select.do?kind=M&series=R22&body=ohne&model=R+1150+RT+00+%280419%2C0499%29&zone=USA&prod=20040700&arch=0

 

I have done an old boxer R90 before and it was not complicated by engine standards. You might also go to boxerworks.com and check with those guys as well.

 

Best of luck and keep us posted of your decision and progress.

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Mark G

Mark G

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Thanks guys. I will take pictures, got a 4gig card for my camera.

 

My bike has 86,000 miles on it and ran fine until I changed my oil and out through the plug...what did I see...plastic parts, so far three! I am sure there are more so she won't be started, just drained and pulled apart.

 

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kmac

kmac

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Posted

The concern is not that there are plastic bits in the oil, but what did the plastic bits DO before. :P

 

Personally, I know many people here think these bikes are 100k+ motors, and often they are, but if i gotta open up my block at over 50k....i am probably gonna pop for all of the wear parts.

 

You can get a complete short block from bmw for 2500 bucks. im sure you could rebuild for 1500-2k. Here is a link to a good reference source for parts. Not neccesarily the best price, but it is a factory microfishe.

 

http://www.ascycles.com/Illustrated_catalog2/MicroList.aspx?id=51765&catID=11&catname=11+Engine

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Ken H.

Ken H.

Posted
Posted
My question for the gurus here would be, DOES the cases of the motor need to be split to fix a guide/tensioner, or do you just have to pull the heads and barrels? It seems like the cam chain goes into the block, obviously, but the guides and tensioners are inside the barrels, aren't they?
To replace the long plastic cam chain guides the case must be split. The tensioners are external and can be replaced from the outside.
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Mark G

Mark G

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Thanks for the micro fiche links...I think these bikes can last for over 100,000 miles, it's just a plastic chain guard that failed.

 

I am going to start clearing out space for the body tomorrow. I will post pics when I begin the nightmare...I say nightmare because I have a 14 month old toddler at home and a wife who stays busy.

 

I cannot find any guidance as to when these parts should be replaced.

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kmac

kmac

Posted
Posted

Oh that is cool that you have a "HELPER" working with you. Keep the intiquite parts up high. ;)

 

My dad started having me help in the garage at a very early age and it has made me a real gear head and a decent wrench over the years. My mom has a picture of me at about 9 months old sitting in a puddle of oil on the floor with a cadillac head gasket wrapped around my neck while making vroom vroom noises and my diaper swelling up as it soaked up the oil. I started young. Been in the garage every since. Started pulling lawn motors apart, then at some point later actually fixing them, then moved into my first motorcycle repairs at 6 yrs old, and by 11 i was swapping out long blocks in my dads rambler americans for him. Been a life long passion for me, love/hate at times, but a passion none the less.

Get him out there let him scratch something, he will love it. :thumbsup:

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NonComp

NonComp

Posted
Posted

If you are talking about the chain guide, they don't normally need to be replaced. If the chain tensioner fails, then the chain will have slack and it will eat the chain guide. Normally, you would hear a rattling sound that would warn you that the chain tensioner is failing. The tensioner is an easy replacement item. The chain guide is not. Rule of thumb is that if you hear the chain rattling, don't ignore it.

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flars

flars

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Posted

You should pop over to the advrider.com forum - I am pretty sure that is where I saw a thread on how to replace the guide without splitting the cases. It involved cutting a notch in the guide, I believe. Search, ask questions, etc until someone cries uncle and points you in the right direction over there.

I wouldn't replace anything in there that wasn't broke - these engines really are very long lived, and 86K isn't very old.

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AndyS

AndyS

Posted
Posted
You should pop over to the advrider.com forum - I am pretty sure that is where I saw a thread on how to replace the guide without splitting the cases. It involved cutting a notch in the guide, I believe. Search, ask questions, etc until someone cries uncle and points you in the right direction over there.

I wouldn't replace anything in there that wasn't broke - these engines really are very long lived, and 86K isn't very old.

 

I too have heard that argument on the BM Bikes forum. I accept you could get a new one on by cutting a notch in hte elongated portion, BUT how do you get the old one off without leaving debris in the engine housing?

 

Andy

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Mark G

Mark G

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Posted

The old guide pieces will just come out with the next oil change!

 

I have my local race bike mechanic on call to help when I screw this up if I actually do it.

 

Prob going to do guides/tensioner, rings, main bearing, clutch, tires, brakes...$$$$....or buy a new bike.

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G-Rex

G-Rex

Posted
Posted

Rebuilding yourself will be cheaper than buying a new bike, and you'll learn something in the process!

 

While I haven't rebuilt a BMW engine before, the general experience will be pertinent.

 

I've rebuilt many motorcycle engines, ranging from Kawasakis and Suzukis to Ducatis. I don't have an *extravagant* tool collection, but I do have more than your average handyman set, and the ONLY thing I don't have or bother with is the special tools for the flywheel and some of the sprockets that a regular puller won't work on. For these, a quick trip to the dealer with the motor in the trunk, along with paying them an hour of labor or a box of donuts, and that problem is solved.

 

Good luck with whatever route you go!

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