The JUSTBIGREDS.COM Forum - A Forum Dedicated to the BIG RED ATC
Sign up Calendar Latest Topics
 
 
 


Reply
  Author   Comment  
Gooseblaser

Junior Member
Registered:
Posts: 3
Reply with quote  #1 
Hey guys, just started the top end rebuild of my 85 250es. I saw a video on YouTube where he had the whole top end off without removing the motor. I can’t get anything other than the cylinder head cover off cause it hits the frame and the studs are too long.
I thought about dropping the lover engine mounts but it looks like I could only get 1/8” more clearance, and that wouldn’t be enough

Attached Images
jpeg image.jpg (2.49 MB, 6 views)

0
Big Red Jason

Member
Registered:
Posts: 78
Reply with quote  #2 
Good luck and send lots of updates with photos/videos.  Perhaps include link to video you watched.  I may be doing this in future.


0
bigredmark

Avatar / Picture

Moderator
Registered:
Posts: 893
Reply with quote  #3 
You should be able to remove the cylinder head and cylinder with the engine in the frame. Maybe the studs are not screwed down into the crankcases all the way. Below is some information from the service manual.

manual removal.png  cylinder head removal.png 

0
Gooseblaser

Junior Member
Registered:
Posts: 3
Reply with quote  #4 
Thanks for the pic, I have the clymer manual and it doesn’t go into that much detail
Ended up getting it off, the sleeves to line up the cylinder and head were stuck in the head and I had to wiggle them loose, then there was enough clearance
Ended up snapping one head bolt but got the machine shop to extract it. All fixed up going to put it back together this weekend

Attached Images
jpeg 13F0A9B4-D5EA-4C1F-8859-4FD77CE83AA4.jpeg (2.11 MB, 4 views)
jpeg E40DA678-4BC0-4E41-BFE8-1DB0733CB980.jpeg (1.88 MB, 4 views)

0
bigredmark

Avatar / Picture

Moderator
Registered:
Posts: 893
Reply with quote  #5 
Thanks for the feedback and good to hear that you are progressing along with the top end job
0
olds442_hurst

Junior Member
Registered:
Posts: 20
Reply with quote  #6 
Complete Honda service manual here if you need it not clymer. OEM Shop service manual http://www.oscarmayer.net/atc/manuals/
0
Gooseblaser

Junior Member
Registered:
Posts: 3
Reply with quote  #7 
All finished, took longer than I expected to put it back together.. ended up dropping a washer into the crankcase while assembling it so had to take the side cover off, so new gasket and oil change. It all put back together like the manual said. Getting the timing lined up properly took patience, it keeps shifting when you put the chain back on the cam .Had to adjust the valves twice to get them right but now it’s running realy nice,
I must have been loosing compression somewhere cause now it’s got a lot more power!!
Glad I did it, great learning experience!

Attached Images
jpeg 2B741DFD-29E0-4F01-B1AB-5DA9ED17B1A6.jpeg (2.16 MB, 8 views)
jpeg 8F75012A-144A-410E-B647-9E80F530E021.jpeg (2.26 MB, 8 views)
jpeg 367FDBB2-1906-40F6-827C-42D3C159DC87.jpeg (1.91 MB, 8 views)
jpeg 872FAD9A-A198-4497-B562-1C57303C5D37.jpeg (2.59 MB, 8 views)
jpeg 98C319B1-4022-4B15-ADFA-92B4C71D0124.jpeg (2.10 MB, 7 views)
jpeg 9D6CA700-F9AF-49D1-8C93-DB05015BC58B.jpeg (1.94 MB, 7 views)
jpeg 1DD923CD-D2D7-4E8F-94C5-EBFFC0765BA1.jpeg (1.69 MB, 8 views)
jpeg B7CB78FA-3614-402C-8B31-54E5EC719B2A.jpeg (1.78 MB, 8 views)
jpeg E2F33063-2296-49F4-80BE-D2B2333D674B.jpeg (2.24 MB, 11 views)

0
bigredmark

Avatar / Picture

Moderator
Registered:
Posts: 893
Reply with quote  #8 
Nice work.
0
olds442_hurst

Junior Member
Registered:
Posts: 20
Reply with quote  #9 
Awesome glad you're back up and running.
0
Previous Topic | Next Topic
Print
Reply

Quick Navigation:

Easily create a Forum Website with Website Toolbox.