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

DISCUSSION => Engine + Driveline => Topic started by: BigAlPreston on May 21, 2010, 09:45:38 PM

Title: 6.4HP gain, now head swap???
Post by: BigAlPreston on May 21, 2010, 09:45:38 PM

Hi all,

I sort of inhereted a nice little 318 from my brother who's in the navy.  I do a lot of work on my E46 and though I prep the little 318 up a bit.  I got the Signature Motoring performance intake which added 6.4HP/3.9 ft/lb on the dyno.  Not bad considering it as a percentage.  The induction sound was so cool I've been tearing around the hills of Malibu here and now I've got a coolant leak from the headgasket.  It appears only extenernal, no trace in the oil.  Car has 162,000 on it and I'd like to keep it a while.  I'm sure a lot is worn in the head.  Anyone dealt with a good source for rebuilt heads aside from Bav Engine Exchange that is a bit pricey/bad rap for customer service?  Thanks all!

Title: 6.4HP gain, now head swap???
Post by: tjts1 on May 21, 2010, 11:58:45 PM

Is it on the driver's side of the engine or passenger side? If its on the passenger side, it could be one of the many small hose below the intake manifold.
http://www.m42club.com/forums/showthread.php?t=2742

Title: 6.4HP gain, now head swap???
Post by: fiftytakedowns on May 22, 2010, 02:13:44 AM

More info on the Intake system?

Title: 6.4HP gain, now head swap???
Post by: Warsteiner on May 22, 2010, 06:33:43 AM

http://www.signaturemotoring.com/Cold%20Air%20Intake.htm

Title: 6.4HP gain, now head swap???
Post by: nicknikolovski on May 28, 2010, 06:20:07 AM

Check out VAC Motorsport for rebuilt heads as well.