» Site Navigation | | » Recent Threads | | 1999 M3 Swap 09-07-2023 10:10 PM 05-02-2024 08:18 PM 6 Replies, 405,344 Views | | | | | | 12-16-2012, 11:26 PM | #1 | Senior Member Join Date: Feb 2009 Location: san jose Posts: 425 | Head gasket go boom ..... So friday i decided to go make videos with my new dash cam on the way home after making a few videos i jumped on the free way was going about 65 mph 4 gear punched it around 5000 rpm boom . 2 hrs later waiting for tow truck .Get home pulled the head piston 1 gasket ring cooper seal let go. as im removing the head bolt's i notice there coming off with little force. i figure its its because the gasket peace is missing i try the rear head its a little hard hummmm so i start checking the torque setting on all the bolts bar is braking at 40lbs on 1/2 piston and 50lbs 3/4 piston bolts ... wtf btw running 20 psi 14 degree time at wot with is not high at all .... mm say they torque the head to 22 lbs then 2 90 degree turns .... last time i did my old motor H.G that came out to give or take 80 lbs not 50 lbs ... the only thing i can come up with is someone forgot to add the last 90 degree final turn .... no big deal im just glad there's no serious damage to the motor !!!! i never really liked the thought that i spent 10 k on a motor that ran a stock head gasket time to order a cometic mls H.G yea i know mm says they had bad experience using them i ran one in my old set up in never blew a gasket !!!also need to get rid of my ebay wastegate be for that lets go and ends up blowing my motor ...ill post pix . Last edited by blowin 4; 12-16-2012 at 11:28 PM. | | | 12-17-2012, 01:00 AM | #2 | Senior Member Join Date: Dec 2010 Location: Wichita Falls, Texas Posts: 1,364 | Been there; done that, too. | | | 12-18-2012, 09:45 PM | #3 | Senior Member Join Date: Dec 2007 Location: Gulfport, Florida Posts: 3,208 | I just changed out my head gasket. #3 was leaking into the cooling system. I used the M47 BMW gasket which for for a diesel motor. I torqued my modified M3 head bolts to 63ftlb. I'm ready to go for another 25K and higher boost now too. | | | 12-19-2012, 02:31 AM | #4 | Senior Member Join Date: Feb 2009 Location: san jose Posts: 425 | Quote: Originally Posted by xxxJohnBoyxxx I just changed out my head gasket. #3 was leaking into the cooling system. I used the M47 BMW gasket which for for a diesel motor. I torqued my modified M3 head bolts to 63ftlb. I'm ready to go for another 25K and higher boost now too. | i tried to look into diesel gasket but i went with cometic i never had a problem when i ran it in my old motor and u know how bad that tune was .. | | | 12-19-2012, 03:08 AM | #5 | Senior Member Join Date: Feb 2009 Location: san jose Posts: 425 | Got my head back its not warped who hoo got all my victor reiz seals just waiting on my cometic h.g $ precision wastegate not taking anymore changes... btw the guys at top end performance really know there **** when it comes to turbo i 4 the say all there builds make 400 + hp easy with out a problem he also said that i was at risk of my block giving out to they never bore there cylinders over .5 stock 1.2 mm wont make any where close to as much as adding a pound off bost wish i knew about these guys few years plus they build strokers for way cheaper than mm.... top end performance .com check them out .... | | | 12-19-2012, 03:27 AM | #6 | Senior Member Join Date: Feb 2009 Location: san jose Posts: 425 | Quote: Originally Posted by xxxJohnBoyxxx I just changed out my head gasket. #3 was leaking into the cooling system. I used the M47 BMW gasket which for for a diesel motor. I torqued my modified M3 head bolts to 63ftlb. I'm ready to go for another 25K and higher boost now too. | so how did you get a diesel gasket to work cut of the extra part of the gasket on the front change guard what ever that is looks like it will work fine. better off going with a cometic... | | | 12-19-2012, 05:46 AM | #7 | Senior Member Join Date: Feb 2009 Location: san jose Posts: 425 | pic's have more pic after xmas with a new dyno sheet. | | | 12-19-2012, 05:48 AM | #8 | Senior Member Join Date: Feb 2009 Location: san jose Posts: 425 | pic's | | | 12-19-2012, 03:04 PM | #9 | Senior Member Join Date: Dec 2007 Location: Gulfport, Florida Posts: 3,208 | I'm impressed with your head gasket picture. I have never seen a gasket that badly damaged. Piston tops look lean unless you cleaned them before the picture. The gasket looks like the head floated up and it blew out the gasket with a pop. Good luck with the MLS gasket. I'm going for 25psi but can't get the standalone to fire up | | | 12-19-2012, 06:23 PM | #10 | Senior Member Join Date: Feb 2009 Location: san jose Posts: 425 | yeah i never seen that either im almost positive the head lifted it was only torqued 40 lbs 2 front cylinders and 50 in rear cylinders i never had a problem with cometic in my last motor in i removed the head 6 times as long as you have smooth AR youll be fine horse power freaks dont o ring there blocks they use cometic and there cars run 10000+ rwhp . sorry to tell you john but yr gaskets going to give if you push more than 20 psi even tho its diesel the compression of the turbo is why higher than 16.1 . btw i cleaned the pistons.. | | | 12-19-2012, 07:21 PM | #11 | Member Join Date: Dec 2012 Location: jacksonville nc Posts: 35 | I just bought a 98 318ti knowing it needed a head gasket, i want to buy a cometic mls gasket has anyone used these for bmw, ive been told that they are really touchy with what gaskets you use but i feel like thats just BMW trying to get me to buy their stuff. | | | 12-19-2012, 09:35 PM | #12 | Senior Member Join Date: Feb 2009 Location: san jose Posts: 425 | Quote: Originally Posted by bimmerboy98 I just bought a 98 318ti knowing it needed a head gasket, i want to buy a cometic mls gasket has anyone used these for bmw, ive been told that they are really touchy with what gaskets you use but i feel like thats just BMW trying to get me to buy their stuff. | Do you plan on boosting it ? if not factory will do fine sounds like the car over heated & warped the head i got a used cometic with 2000 miles if your interested i would use it but my motor was bored so i cant use it. | | | 12-19-2012, 10:14 PM | #13 | Member Join Date: Dec 2012 Location: jacksonville nc Posts: 35 | that would work, I will be boosting it, I already bought the cometic mls | | | 12-19-2012, 10:17 PM | #14 | Senior Member Join Date: Feb 2009 Location: san jose Posts: 425 | Quote: Originally Posted by bimmerboy98 that would work, I will be boosting it, I already bought the cometic mls | where did you buy it ? i ordered mine from top end performance cost me 213.00 i have to wait 3-4 days to be made ... vac told me 3-4 weeks. | | | 12-19-2012, 11:56 PM | #15 | Member Join Date: Dec 2012 Location: jacksonville nc Posts: 35 | cometic.com, cost $160 ships friday | | | | | Currently Active Users Viewing This Thread: 1 (0 members and 1 guests) | | Posting Rules | You may not post new threads You may not post replies You may not post attachments You may not edit your posts HTML code is Off | | | |
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