Go Back   tbirdforum.com > Thunderbird Model Years > Early Birds [1955-1957]

Early Birds [1955-1957] Have a Super Sharp 1955 to 1957 Thunderbird or just want to learn about them? Show yours off and talk about them here.

57 oil pan seal

This is a discussion on 57 oil pan seal within the Early Birds [1955-1957] forums, part of the Thunderbird Model Years category; I'm getting ready to reinstall my oil pan. After cleaning off the old gasket I had placed the pan (bolt ...

LinkBack Thread Tools
  #1 (permalink)   IP:
Old 10-08-2020, 08:53 PM
Join Date: May 2015
Posts: 28
Rep Power: 0
valhalla4771 is on a distinguished road
57 oil pan seal

I'm getting ready to reinstall my oil pan. After cleaning off the old gasket I had placed the pan (bolt holes down) on a level surface. I was expecting the rim to be pretty much flat. However I notice that looking at it from the side I see daylight in between each bolt hole. The bolt holes (or more accurately the metal around each bolt hole) extends approx 1/16" below the rim of the pan. To put it another way, if installed without a gasket, the pan would be tight against the block only at the bolts, showing a 1/16" gap in between each bolt. Please someone tell me this is normal and not the result of overexuberant tightening of the bolts, and that the gasket and gasket sealer will give me a good seal at proper torq.
Reply With Quote
  #2 (permalink)   IP:
Old 10-09-2020, 07:27 PM
Yadkin's Avatar
Join Date: Aug 2012
Posts: 111
Rep Power: 21
Yadkin is on a distinguished road
The metal is distorted due to over torquing of the pan bolts. It's common practice to work it flat by placing flange down on a hard flat surface and using a hardwood block as a drift for a hammer. Cut a block the correct thickness, move it along the flange as you tap away at it. You won't have to hit it hard. A little patience and finesse will get it back into shape.

These pans leaked badly at the gasket surface. Lots of guys don't use gaskets anymore- they use RTV sealants instead. As thin a bead as possible. And less torque on the bolts to keep the flange from distorting. I like to use a thin rubber gasket (shop around) and a thin bead of RTV on both edges.
Reply With Quote

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On

All times are GMT -4. The time now is 05:09 AM.

Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2021, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO 3.3.0
Garage vBulletin Plugins by Drive Thru Online, Inc.