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By having a M42 cylinder head on a M44 block might have something to do why I'm having this problem?  __________________
EURO FRESH |  |  | | 04-17-2015, 07:42 AM | #17 | | Senior Member Join Date: Jul 2010 Location: Riverside ,So-Cal Posts: 725 |
bump __________________
EURO FRESH | | | | | 04-17-2015, 07:46 AM | #18 | | Senior Member Join Date: Feb 2012 Location: Sacramento, CA Posts: 2,451 |
Is the head swap something just recently done? If not, I am also leaning towards a big vacuum leak if it just acted up. I recently had one with one of my emission hoses breaking in half. Ran ran terribly. Fixed hose. Runs smooth again
Sent from my iPhone using Tapatalk __________________ 
1998 318ti Sport - "Cali" Schwartz II/Schwartz sport interior, Cali top
1998 318ti Sport - "Max" Schwartz II/Schwartz sport interior, S52
1997 318ti Sport - "Tiny" Schwartz II/Schwartz sport interior
1995 318ti Active - "Blanca" Alpineweib III/Schwartz leather interior
Other Current Bimmers: 2006 530i / 2000 2.3L Z3 / 1997 1.9L Z3 / 1999 540it
1997 318ti Sport - "Huera" - RIP
1995 318ti Active - RIP
1995 318ti Sport - "Tiny" Sold
1994 325i Sedan - "Jade" - Sold
1991 318ic - "Bert" - Sold
1985 635csi sold
1984 533i "Max" Sold
1984 318i sold
BMWCCA #160411
SUPPORT 318ti.org! CLICK THE LINK ABOVE!
Hosting a forum like this is not free. 318ti.org is one of the best BMW forums on the web because it is member supported, not vendor supported. The cost to become a Supporter is a nominal $10.00... A YEAR! DO IT! NOW! | | | | | 04-17-2015, 08:12 AM | #19 | | Senior Member Join Date: Jul 2010 Location: Riverside ,So-Cal Posts: 725 |
Quote: Originally Posted by BlackBMWs  Is the head swap something just recently done? If not, I am also leaning towards a big vacuum leak if it just acted up. I recently had one with one of my emission hoses breaking in half. Ran ran terribly. Fixed hose. Runs smooth again
Sent from my iPhone using Tapatalk | Yes it was! So I was wondering if this due to using a M42 head instead of a M44 __________________
EURO FRESH | | | | | 04-17-2015, 03:40 PM | #20 | | Senior Member Join Date: Feb 2012 Location: Sacramento, CA Posts: 2,451 |
I'm not very knowledgable on coverage points for this conversion. If I can ask, what was the motivating factor to swap heads? Perhaps someone else that has done this swap can comment.
Sent from my iPhone using Tapatalk __________________
1998 318ti Sport - "Cali" Schwartz II/Schwartz sport interior, Cali top
1998 318ti Sport - "Max" Schwartz II/Schwartz sport interior, S52
1997 318ti Sport - "Tiny" Schwartz II/Schwartz sport interior
1995 318ti Active - "Blanca" Alpineweib III/Schwartz leather interior
Other Current Bimmers: 2006 530i / 2000 2.3L Z3 / 1997 1.9L Z3 / 1999 540it
1997 318ti Sport - "Huera" - RIP
1995 318ti Active - RIP
1995 318ti Sport - "Tiny" Sold
1994 325i Sedan - "Jade" - Sold
1991 318ic - "Bert" - Sold
1985 635csi sold
1984 533i "Max" Sold
1984 318i sold
BMWCCA #160411
SUPPORT 318ti.org! CLICK THE LINK ABOVE!
Hosting a forum like this is not free. 318ti.org is one of the best BMW forums on the web because it is member supported, not vendor supported. The cost to become a Supporter is a nominal $10.00... A YEAR! DO IT! NOW! | | | | | 04-18-2015, 07:36 AM | #21 | | Senior Member Join Date: Jul 2010 Location: Riverside ,So-Cal Posts: 725 |
Quote: Originally Posted by BlackBMWs I'm not very knowledgable on coverage points for this conversion. If I can ask, what was the motivating factor to swap heads? Perhaps someone else that has done this swap can comment.
Sent from my iPhone using Tapatalk | The old head cracked so I had to get a new head  __________________
EURO FRESH | | | | | 04-18-2015, 04:57 PM | #22 | | Senior Member Join Date: Dec 2007 Location: Gulfport, Florida Posts: 3,208 |
You are using a OBD-I head on a OBD-II motor. Here are a few questions. Does the M42 head have a cam sensor and if so did you allign the trigger wheel correct? Any plugs without a home from the M44 harness to M42 head.
I know you can do a M42 to M44 head and it will run but I'm not sure of doing it backwards or M44 to M42 without other mods so the computer is happy.
Cams not alligned correctly will cause a crappy idle or no idle due to too much overlap.
Good luck, John S | | | | | |
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