Mazda Rotary Club

General => General Technical => Topic started by: DR SCHNITZEL on March 31, 2008, 06:46:59 PM

Title: Engine removal
Post by: DR SCHNITZEL on March 31, 2008, 06:46:59 PM
Hi im near to having my engine removed and its only taken 2 hours so far but i have a problem or 3
 
1 ) The guide i have used says that all electrics should be disconnected by now but i still have some stuff connected which looks liek i need to removed the throttle body and other bits to unplug it,?
 
2 ) where best to takle getting the downpipe off?? the midpipe bolt has sheared,  i was trying to take it off from there
 
3 ) do i need to do the pull clutch thingy? i have gone around the flywheel doing all the 6 ish bolts around, is that all or do i need to disengage it, what are the best tools?
 
thanks all
 
FD nr 3 in 2 weeks :Thumbs-up
Title: Engine removal
Post by: RobbieRX-7 on March 31, 2008, 07:21:38 PM
By far the easiest way to remove all the wiring is to unplug from the ecu and pull the harness through to the engine bay. It\'s a bit tight for space because it\'s right under the ABS system. There are some wires going to the gearbox, so you\'ll need to get under the car and unplug/unclip the harness from the gearbox. I think there is about 5 plugs to disconnect then just bend the metal tabs holding the harness to the gearbox.

the engine can be removed with the downpipe attached although a bit tricky so i would just do that.

If you\'ve allready unscrewed the bolts on the flywheel, your ready to go. The engine will seperate easily. You\'ll need to get the clutch pressure plate off the gearbox before you refit the engine though. If you bolt the pressure plate to the flywheel before you refit the engine, all you have to do is push the clutch fork forward into the pressure plate and your ready to go.

this vid will help http://www.youtube.com/watch?v=uPCi4RpGQCU
Title: Engine removal
Post by: DR SCHNITZEL on March 31, 2008, 07:27:12 PM
Oh right, i have been reading the guide backwards, when it says pull the ecu wires through the bulk head, i thought it meant the other way, hahahahahahaha to stop the wires and plugs getting damaged when you remove the engine, lol i feel like such a whopper now. brilliant, just have to grind away that sheared bolt, too
 
, can i remove the exhaust any other way? ie from the turbos, cheers for that mate
Title: Engine removal
Post by: RobbieRX-7 on March 31, 2008, 07:33:28 PM
You can remove the downpipe from the turbo\'s if you want, it\'s only 4 bolts but they are notorious for snapping and stuff. If you decide to do it this way, remove the lower part of the steering universal joint, dont forget to mark the position before you do this though. I did it this way because i couldn\'t get my engine out with my 4" downpipe attached. HTH
Title: Engine removal
Post by: RobbieRX-7 on March 31, 2008, 07:39:40 PM
Also when you unplug the wires from the ecu, there is a final connector above the ecu that you can\'t see. It\'s really hard to get to but this must be unplugged before the harness can be pulled through. This connector supplies the clocks so if they dont work when you refit the engine, you will know what the problem is.
Title: Engine removal
Post by: DR SCHNITZEL on March 31, 2008, 07:43:49 PM
Sterling advice robbie cheers, just thinking of removing with the dp in place, i take it this is very hard to do? im on axle stands and will have to hire a pulley to get the lump out?
Title: Engine removal
Post by: DR SCHNITZEL on March 31, 2008, 07:44:49 PM
im thinking the engine will have to be chained slack on the rear to give the dp an angle to come out.
Title: Engine removal
Post by: RobbieRX-7 on March 31, 2008, 07:50:25 PM
Yeah will definitly need to come out at a steep angle. you\'ll run into problems with the engine mounts hitting the sub frame and all sorts but it\'s all good fun. Jack the gearbox as high as it will go but not so high as it starts to lift the car.
Title: Engine removal
Post by: DR SCHNITZEL on March 31, 2008, 07:57:17 PM
cool, may sound silly but can the shell be lowered while the engine is hoisted? are we talking like a 4 - 5 man job to lift it off the stands and put it on something lower?
Title: Engine removal
Post by: RobbieRX-7 on March 31, 2008, 08:01:29 PM
Makes no difference mate. Lowering the shell is just like raising the engine.  You wont acheive anything by lowering the shell. It\'s fits so snugly to the gearbox you need to raise, pull, wiggle, raise, pull, wiggle untill it\'s out. I reccommend having a couple mate to help.
Title: Engine removal
Post by: Martiny on March 31, 2008, 08:53:25 PM
Would recommend:
1) remove the engine mounts from the engine
2) jack up the engine and gearbox as much as possible
3) Support the gearbox with something ( maybe the jack)
4) I would at least loosen the downpipe so it doesnt stop you if it snags on something.
5) now remove engine.
Title: Engine removal
Post by: nikp on March 31, 2008, 10:23:05 PM
you can remove the engine by yourself, but it can be tricky. Make sure all earths are undone from the block - i made the mistake of leaving one attached. Also, if you raise the engine a bit with the downpipe attached it should make access to it slightly easier.
Title: Engine removal
Post by: DR SCHNITZEL on April 02, 2008, 03:27:43 PM
Brilliant. Im just waiting for some nice weather now. cheers all, whats the best way to get a chewed nut of and exhaust bolt, its well shot, i was just going to angle grind it off>?
Title: Engine removal
Post by: nikp on April 02, 2008, 03:47:56 PM
Yeah, cutting it off is probably easiest.