Jump to content

Manifolds on my 48 D-24


bighammer48

Recommended Posts

Guys,

 

I bought new intake and exhaust manifolds for my D-24. The shop manual only lists the torque spec. There are no directions for installation. Do I bolt the 2 together first( 4 bolts near the carb mount ), or do I bolt them loosely to the engine, then snug the top and bottom halves where the carb mounts, then tighten to the engine finishing the top/bottoms last? Or, do I tighten completely to the block first? I DO NOT want to induce a crack in either piece. Help, please!

Edited by bighammer48
Link to comment
Share on other sites

When the parts were new, the intake stood proud of the exhaust flanges by a very small amount. This allowed the intake to be tight while allowing for some movement on the outer end of the exhaust.

 

  Just make sure you draw all the nuts  and bolts up evenly and be sure to use the correct washers especially the brass ones on the exhaust .  If they are not available , use a flat washer which will allow some expansion and contraction.  The intake does not use washers on the  drilled holes, the other fastening points use a thick slightly cupped washer. 

 

 The post following this gives more good advice.   In my original post, there was an error about washer use

 

 my apologies for not proofreading.

Edited by dpollo
  • Like 1
Link to comment
Share on other sites

I would recommend that you assemble the manifolds together loosely, then install the assembly and tighten the assembly to the block starting from the center out.  leave them hand tight (snug then a quarter turn) for a heat cycle then firm up from the center out to the spec'ed torque.

  • Like 1
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.

Guest
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.

×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.

Terms of Use