M42club.com - Home of the BMW E30/E36 318i/iS

DISCUSSION => Engine + Driveline => Topic started by: Gunni on November 21, 2006, 09:28:26 PM

Title: My M42 head is cracked
Post by: Gunni on November 21, 2006, 09:28:26 PM: Yea a nice crack into the coolant line,

I can get a pre ´94 M42 318is E36 head, will it work ??
Title: My M42 head is cracked
Post by: dude8383 on November 21, 2006, 11:05:48 PM: yes it'll work.
Title: My M42 head is cracked
Post by: Gunni on November 22, 2006, 05:53:07 AM: Any diffrences in specs?
like the cams and or valve sizes?
Title: My M42 head is cracked
Post by: Alpine003 on November 23, 2006, 11:07:53 PM: Looks like I might be swapping heads too with possibly a m42 from E36.

Anyone know if the timing components are the same? Anything else I should look out for or get?
Title: My M42 head is cracked
Post by: Gunni on November 24, 2006, 08:21:33 AM: I found that the valves are the same , but cams are not,
how they are not I can´t find an answer too
Title: My M42 head is cracked
Post by: dude8383 on November 24, 2006, 05:24:45 PM: realoem doesn't have anything??

i heard that its simply swap and play...there are no gains to be had with the e36 head though..
Title: My M42 head is cracked
Post by: Gunni on November 25, 2006, 08:44:36 AM: Head is on, we used my cams as they where marked from the installation before,

Everything is back together and I´m going to try and dump the engine in the car today,

I put the cams back where they where before, might be a degree off, but thats ok,
Title: My M42 head is cracked
Post by: nickmpower on January 04, 2007, 07:51:01 PM: on some the valve stem diameter is smaller
Title: My M42 head is cracked
Post by: 2002maniac on January 05, 2007, 12:29:38 AM: Quote from: nickmpower;16816
on some the valve stem diameter is smaller

wasnt that only the M44?
Title: My M42 head is cracked
Post by: nickmpower on January 05, 2007, 02:46:21 AM: nope. Ive got 6mm stems since i got another head after mine cracked. then when the guides broke and the chain jumped and one broke off. I dunno if its worth it. ive got lightweiht lifters, lightweight flywheel, m44 rods, but the crank is heavier so it doesnt really matter, im still scared those m44 rods are going to let me down
Title: My M42 head is cracked
Post by: Alpine003 on January 05, 2007, 09:30:26 AM: Quote from: Gunni;14408
Head is on, we used my cams as they where marked from the installation before,

Everything is back together and I´m going to try and dump the engine in the car today,

I put the cams back where they where before, might be a degree off, but thats ok,

Holy run on sentence batman! I think you meant to use periods instead. :p

Wait, so you pulled the entire motor just to replace the cylinder head?

If you pulled the entire motor without the tranny, I wish you luck in getting it back in. Some get lucky, some don't. Ask me how I know. :rolleyes:
Title: My M42 head is cracked
Post by: tim_s on January 05, 2007, 09:47:17 AM: Quote from: Alpine003;16850
Holy run on sentence batman! I think you meant to use periods instead. :p

Wait, so you pulled the entire motor just to replace the cylinder head?

If you pulled the entire motor without the tranny, I wish you luck in getting it back in. Some get lucky, some don't. Ask me how I know. :rolleyes:

I've done it this way a few times. Trick is to use a clutch aligning tool with f/w and cltuch loose, hook engine to G/B with f/w still loose, carefully unhook and tighten then put on. never had too much trouble this way.
Title: My M42 head is cracked
Post by: Alpine003 on January 05, 2007, 10:16:44 AM: Quote from: tim_s;16853
I've done it this way a few times. Trick is to use a clutch aligning tool with f/w and cltuch loose, hook engine to G/B with f/w still loose, carefully unhook and tighten then put on. never had too much trouble this way.

I'm a little unclear on your method. First of all, you cannot tighten the flywheel after the clutch and pressure plate is already on. Did you mean to have the pressure plate loose so the clutch can move around when you align the shaft through the clutch disc? Also, I don't understand why you have to if you never touched the clutch to begin with, since they should be in good alignment when you separated the motor from the tranny?
Title: My M42 head is cracked
Post by: Gunni on January 05, 2007, 11:25:45 AM: I Was swapping the engine between bodies,
it´s great now,
Title: My M42 head is cracked
Post by: tim_s on January 05, 2007, 03:46:57 PM: Quote from: Alpine003;16859
I'm a little unclear on your method. First of all, you cannot tighten the flywheel after the clutch and pressure plate is already on. Did you mean to have the pressure plate loose so the clutch can move around when you align the shaft through the clutch disc?

sorry yeah, was in work earlier and not really thinking too hard about my reply. seems you understood though.

Quote

Also, I don't understand why you have to if you never touched the clutch to begin with, since they should be in good alignment when you separated the motor from the tranny?

every time i can remember taking a bmw engine out of a car i've removed the clutch - every time i can remember i've changed the rear crank seal and checked clutch etc.

If the clutch is untouched and in good alignment, why can't you get the engine onto the trans? I've never had this prob?
Title: My M42 head is cracked
Post by: Alpine003 on January 22, 2007, 12:53:53 PM: Quote from: tim_s;16882

If the clutch is untouched and in good alignment, why can't you get the engine onto the trans? I've never had this prob?

http://www.m42club.com//forums/showthread.php?t=1864
Title: My M42 head is cracked
Post by: D. Clay on February 01, 2007, 05:01:06 PM: I put studs in the back of the block so they stick out like pins to start the trans/motor back on.