Jump to content
Ultimate Subaru Message Board
Sign in to follow this  
DaveT

Head Bolt Lengths

Recommended Posts

It's been a while...  Anyway,  I need to finaly put an engine back together.  Something like 10 years since I dissassembled it...  I noticed there are 2 different lengths of head bolts.  It looks like there should be 3 shorter ones in a line just under the valve springs.  Is this correct?

 

 

Back story:

I took it apart back then to do a re-seal.  It was leaking oil at a stupid rate, as is typical.  I had that engine from when it had 15,000 miles on it.  Drove it past 150,000 with synthertic oil and a bypass filter.  Never changed oil, just added as needed.  Checked a crank bearing & wrist pin, both in the best condition / original spec I've seen in the handful of engines I've rebuilt / dissassembled.  And there it has sat, parts in boxes.

 

Anyway, lots of other things kept me busy - like building a house - and I ended up with other spare engines, so I have not needed to re assemble it until now.

 

Thus I don't remember which bolts were short / long / where they were...

 

 

Share this post


Link to post
Share on other sites

Set them in place, and it should be apparent.  For some reason, my mind says 5 of the shorter bolts, and they should fit in the recessed areas of the head (like around the valves).

Share this post


Link to post
Share on other sites

Presuming an ea82, the shorte bolts go in the middle, and the longer go on the perimeter. You will see the outside holes have a taller shoulder, for the longer bolts.

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
Sign in to follow this  

×