Mini Timing??
Hi,
> > I have a few technical questions concerning repairing my Mini. This is my > first Mini Cooper and I purchased to give as a gift to my wife on her > birthday. Her birthday has come and gone but she still thinks it's great > and is looking forward to driving. > Let me give you some history. > I have been an automotive enthusiast all my life and am building a 1963 > Impala, however I am somewhat behind when it comes to modern computer > controlled/variable valve timing vehicles. A few months ago I purchased > the following NON-RUNNING... > > 2009 Mini Cooper > Clubman > Non Turbo > R55 > 130,000 miles > Automatic > > I was told it had "Popped the timing belt". After purchasing and then > researching I found that coopers have timing chains! > I purchased the necessary special tools to place the engine into the 90 > degree position. I locked crank using the pin and when I looked at cams > the exhaust would only allow the locking tool to go in place by turning > cam backwards (counter clockwise) just a little. The intake cam was way > off and I had to loosen the cam bolt in both cams to allow me to move > intake counter clockwise quite a bit to install the locking tool. This > placed both cams wording straight up! Noticing that #1 lobes were in a > position that they were not opening any valves I did a leak down test on #1 > which as I expected it failed horribly! Figuring that valves were Most > likely bent I proceeded to place car into service position and started > disassembly. When I removed the timing chain as a complete assembly I > found numerous pieces of chain guide broken and laying around the crank > sprocket and head. I have ordered numerous parts including a complete > reconditioned head with the same casting # as mine. I am nearly ready to > start reassembly but before I do I have the following questions. > > 1. Since crank is pined, I assume there is ONLY one possible way to > do this then is the short block ready? > 2. When I re-install the head and set both cams with wording > straight up and lock down with the special tools then the head is ready? I > can bolt on? > 3. Is there anything else that MUST be set to have internal timing > correct between cams and crank? > 4. If I am correct in questions 1,2,&3 then when I re-install each > cam sprocket do I have to align the four oil holes on intake and exhaust > sprockets with holes in cam shafts? > 5. Is there a special procedure to install the timing chain besides > using the special tool to set pre-load? > 6. Since crank sprocket or neither cam sprockets are keyed or tapered > what keeps them from rotating out of time? > 7. I noticed a lot of wet residue on tops of each piston and someone > told me there may be an updated larger piston available. Is there?? > Person said it does not require boring. If not what do you suggest for > solution or what might have been problem....(head)? > 8. Also while digging out pieces of chain guide I noticed that the > oil pump chain seemed loosed. Is this normal? All Help to any or all of my questions will be greatly appreciated. I especially need confirmation for questions 1,2,3,&4!!! |
MINI Timing chain DIY: https://www.northamericanmotoring.co...eplaement.html
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