|
||
|
19th April 2010, 18:14 | #1 |
Regular poster
Rover 75 Join Date: Apr 2007
Location: Liverpool
Posts: 66
Thanks: 4
Thanked 4 Times in 4 Posts
|
How can I turn the crankshaft after the head is removed?
Referring to my recent post https://www.the75andztclub.co.uk/forum/showthread.php?t=58164 There was no further miracle. After much head scratching I removed the head by following advice from Haynes and positioning the crankshaft 90 degs BTDC. Examination of the pistons revealed a small piece missing from number 1 that had melted right on its edge causing complete loss of combustion. I have now ordered a replacement piston from Xpart and have clamped the liners, but, as you may have guessed I can't budge the crankshaft to a position where I can access the big end bolts on number 1 conrod. Anyone any ideas?
|
19th April 2010, 18:18 | #2 |
Loves to post
Rover 75 Join Date: Aug 2007
Location: Glasgow
Posts: 290
Thanks: 0
Thanked 1 Time in 1 Post
|
Crankshaft Turning
Why cant you put a socket on the crankshft pulley bolt and turn it .
|
19th April 2010, 18:22 | #3 |
Regular poster
Rover 75 Join Date: Apr 2007
Location: Liverpool
Posts: 66
Thanks: 4
Thanked 4 Times in 4 Posts
|
Rov75, thats what I'm doing but the crankshaft won't budge. Haynes state this in the book but I'm hoping there is a workaround
|
19th April 2010, 18:34 | #4 |
This is my second home
Rover75 and Mreg Corsa. Join Date: Nov 2006
Location: Sumweer onat mote o'dust (Sagin)
Posts: 21,751
Thanks: 341
Thanked 3,660 Times in 2,924 Posts
|
How have you clamped the liners? Is it this device that's preventing the crank from turning?
TC |
19th April 2010, 19:11 | #5 |
Regular poster
Rover 75 Join Date: Apr 2007
Location: Liverpool
Posts: 66
Thanks: 4
Thanked 4 Times in 4 Posts
|
T-Cut, no the liner clamps are home-made and do not come into contact with any moving parts and do not obstruct anything other than lock the liners in place
|
19th April 2010, 19:20 | #6 |
I really should get out more.......
75 tourer cdti, MG ZS 180, nissan terrano & 1.8t rover 25 Join Date: Feb 2010
Location: Pontefract
Posts: 2,642
Thanks: 17
Thanked 295 Times in 218 Posts
|
is there plenty of oil in the bores? if you have wiped any out, it will be hard to turn, i would also suggest applying force in alternate directions ie forwards and back, to get them moving, aswell as putting a decent helping of oil into the cylinders. could you use a longer bar?
|
19th April 2010, 20:05 | #7 |
Been absent for a while…
Rover 75 Tourer, Classic mini Cooper S, Abarth 595 competizione, MG TF and a Hyundai Tucson PHEV Join Date: Feb 2007
Location: Cumbria
Posts: 13,057
Thanks: 1,033
Thanked 1,686 Times in 1,040 Posts
|
any pics of how you clamped the liners - just curious. I have some of the MGR clamps. Generally the different sections of the engine sort of relax?? due to not having the head bolts clamping everything together. This can make the crank difficult to turn, but shouldn't be solid!
__________________
................................................. 'Marmite' Possibly one of the most famous 75 tourers produced! left the production line as the last of only Three Rover 75 tourers produced in Trophy Yellow. 48 hours later Longbridge closed. The last sold ordered 75 Tourer. Paid for by the Phoenix Four and handed over by John Towers to the Warwickshire Northampton Air ambulance service as a Rapid Response vehicle |
19th April 2010, 20:22 | #8 |
Regular poster
Rover 75 Join Date: Apr 2007
Location: Liverpool
Posts: 66
Thanks: 4
Thanked 4 Times in 4 Posts
|
RRobson, yes the bores are still quite oily and SWorks the clamps are two pieces of angle iron bolted through the block in the holes that take the engine bolts. They are placed in parallel across the left and right hand edges of the liners approximately directly under where the camshafts would be directly above them when fitted back onto the engine. They aren't obstructing anything.
|
19th April 2010, 20:58 | #9 |
This is my second home
Rover75 and Mreg Corsa. Join Date: Nov 2006
Location: Sumweer onat mote o'dust (Sagin)
Posts: 21,751
Thanks: 341
Thanked 3,660 Times in 2,924 Posts
|
Have you tried pushing down the pistons rather than turning the crankshaft?
TC |
19th April 2010, 22:37 | #10 |
Loves to post
Rover 75 Join Date: Aug 2007
Location: Glasgow
Posts: 290
Thanks: 0
Thanked 1 Time in 1 Post
|
Turn Crankshaft
With the head off it should be very easy to turn the crankshaft,something is jamming the engine if not the liners then something else.have you disturbed anything else when you removed the head,timing chain.
|
Thread Tools | |
Display Modes | |
|
|