Jump to content
  • When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.

Water Leaking Between Head And Block, After Installing A Head


Recommended Posts

Hi, i have just freshened the head an it's parts, last night installed it and started the engine and run smooth, when I turned off I notice a little water spray Coming out between the head and the block just down spark plug number 4.

I done all the job myself, not a pro neither a mechanic just a adventurer enthusiast, does it means I have to start all over or should I make any other thing? Help

Link to comment
Share on other sites

Without answering all those questions, you can plan on removing the head and reinstalling.  The head gasket is not reusable.  You might check the head bolt torque before pulling the head, it might stop the leak, but the hazard is that coolant may be getting in the cylinder as well.

Edited by jimk

A radiator shop is a good place to take a leak.


I have no idea what I'm doing but I know I'm really good at it.

Link to comment
Share on other sites

Thank you men, I re torque it with no results. I pull it out and check the leak I did not found any issues. I will send it on Monday to the machine shop to test it. The question now is : what about the block ? Do you think is the problem ? In fact when I pull the head the first time I noticed some damage in the gasket near the area where the actual leak is. With my short experience I understand both surfaces block and head should be super flat, getting to the conclusion that the block isn't flat as it should so, what next if this is my problem?

Link to comment
Share on other sites

Gasket brand: "AJUSA" from Spain

Torque procedure: Haynes service manual at 54 lbs first torque and 60 lb the second time.

The block smoothly cleaned.

Thickness : mmmm.. Don't know! The machine told me that they just brushed on the flat part of the head for cleaning.

The gasket is just as it was before the head installation, useless?!

Yes I clean the tape remain from the block...

Yes I clean the tape remain from the block...

Link to comment
Share on other sites

If the head or block was machined, the dowel that locates the block by the number 4 cylinder may need to be trimmed down. Same with the one by the number 1 cylinder.

Proud member #113

The rides!



Link to comment
Share on other sites

If machine shop milled to minimum then standard head gasket which is 1.5mm thick should be okay. I will not reuse gasket if I was you.

This time try to use torque and angle procedures. It is much better and in fact gasket manufacture recommend it and so does BMW.

If you going to take the head back to machine shop, then ask them to check deck height as well.

Torque specs can be found on the first tab of this Google spreadsheet:


If you use torque value and procedure outlined in the link above, then you will need torque and angle meter. I did mine with torque and angle and don't have go back and re- torque after 600/1000 miles


Post a few pictures from bottom of head and cylinder block top here

76 2002 Sienabraun

2015 BMW f10

Link to comment
Share on other sites

To trim the dowels you mean trim the holes where the guides of the block get into the head? That sounds reasonable... Let me check that point. Thank you buddy


Trimming the guide dowels means shortening them in height. If the head is shaved many times the dowel may bottom out.



Racing is Life - everything before and after is just waiting!

Link to comment
Share on other sites

I think it's picture time.


If you had a clean head and block surface and torqued to 60 ft- lbs, you should have been fine.


Unless the head is REALLY cut (more than 1.5mm) the dowels don't bottom...


The gasket is not reusable.



"I learn best through painful, expensive experience, so I feel like I've gotten my money's worth." MattL

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • BMW Neue Klasse - a birth of a Sports Sedan

    BMW Neue Klasse - a birth of a Sports Sedan

    Unveiling of the Neue Klasse Unveiled in 1961, BMW 1500 sedan was a revolutionary concept at the outset of the '60s. No tail fins or chrome fountains. Instead, what you got was understated and elegant, in a modern sense, exciting to drive as nearly any sports car, and yet still comfortable for four.   The elegant little sedan was an instant sensation. In the 1500, BMW not only found the long-term solution to its dire business straits but, more importantly, created an entirely new
    History of the BMW 2002 and the 02 Series

    History of the BMW 2002 and the 02 Series

    In 1966, BMW was practically unknown in the US unless you were a touring motorcycle enthusiast or had seen an Isetta given away on a quiz show.  BMW’s sales in the US that year were just 1253 cars.  Then BMW 1600-2 came to America’s shores, tripling US sales to 4564 the following year, boosted by favorable articles in the Buff Books. Car and Driver called it “the best $2500 sedan anywhere.”  Road & Track’s road test was equally enthusiastic.  Then, BMW took a cue from American manufacturers,
    The BMW 2002 Production Run

    The BMW 2002 Production Run

    BMW 02 series are like the original Volkswagen Beetles in one way (besides both being German classic cars)—throughout their long production, they all essentially look alike—at least to the uninitiated:  small, boxy, rear-wheel drive, two-door sedan.  Aficionados know better.   Not only were there three other body styles—none, unfortunately, exported to the US—but there were some significant visual and mechanical changes over their eleven-year production run.   I’ve extracted t
  • Upcoming Events

  • Supporting Vendors

  • Create New...