TORQUE SETTING M20 325i

Post Sat Apr 08, 2006 7:43 pm

Hello all,

I have just changed my cylinder head due to being cracked so could someone please tell me the torque setting for a m20 325i cylinder head.

Many thanks in advance......

Post Sat Apr 08, 2006 7:58 pm

30 NM, then 90 degrees, then 90 degrees, no retorque after running in required.

Post Sat Apr 08, 2006 7:58 pm

Do each to 30NM/22lbft then turn each 90 degrees and then each another 90 degrees.
Do you know the tightening sequence?

Post Sat Apr 08, 2006 8:03 pm

Damn too slow! lol

Post Sat Apr 08, 2006 8:55 pm

Thanks guys,

Adammcf could you please tell me the tightening sequence........

Post Sat Apr 08, 2006 10:45 pm

14,10,06,02,04,08,12
11,07,03,01,05,09,13

Post Sun Apr 09, 2006 9:21 am

THANKYOU

Post Mon Apr 10, 2006 7:02 pm

Hi Guys.

Sorry to high jack but..I have had a head done, and have just done the first 90 degrees turn and they were bloody tight..!!

Do i need to do another one as it's still leaking from the front corner slighlty?? same as (don't know how much more of this i can take.. thread)

Thanks

Post Mon Apr 10, 2006 8:41 pm

Did you clean the holes in the block where the studs screw into as maybe there's oil or dirt which is preventing the studs from going in properly or giving a false torque reading? Mine werent very hard to do up even the second time I did the 90 degrees to them all.

Post Mon Apr 10, 2006 8:43 pm

I think i might leave well alone for the time being. and hope it blocks up it's self..!!

Post Tue Apr 11, 2006 9:43 am

Stealth wrote:I think i might leave well alone for the time being. and hope it blocks up it's self..!!

The second 90deg is not much harder than the first - the bolts are stretchy. If you leave them half done up I would not be surprised if you see head gasket problems. The key for the bolts is to make sure the holes are clear by blowing them out with an airline first, and if the threads are tight run a ground/slotted bolt to scrape out the crud before you put the lightly oiled new bolt in.