If you are encountering login problems please check here

oil seeping between head and exhaust manifold
#1

good day all---wondering what the possible cause could be that i see some oil seepage between the head and manifold exhaust ports---plugs are clean---compression is good.---about two months ago i noticed that the inlet hose to the turbo from the vein mater had oil on the underside area so i started removing hoses and found oil all throughout the system---it was puddled in the lower i/c hoses---had to extensively clean hoses and especially the intercooler---just got my turbo back from having it rebuilt but i noticed that it is still seeping the oil between the head and the exhaust manifold.---is it possibly still the leftover oil residue ???---please help !!!!!---thank you.
Reply
#2

bilvis Wrote:good day all---wondering what the possible cause could be that i see some oil seepage between the head and manifold exhaust ports---plugs are clean---compression is good.---about two months ago i noticed that the inlet hose to the turbo from the vein mater had oil on the underside area so i started removing hoses and found oil all throughout the system---it was puddled in the lower i/c hoses---had to extensively clean hoses and especially the intercooler---just got my turbo back from having it rebuilt but i noticed that it is still seeping the oil between the head and the exhaust manifold.---is it possibly still the leftover oil residue ???---please help !!!!!---thank you.

Some of the exhaust manifold bolts intersect with oil. You need to seal the exhaust manifold bolts. I know this answer is a bit vague, I can't remember off the top of my head which ones. Hopefully some one will respond with more info and/or do a search on the forum.
This is a quick answer, I'm getting ready to leave for a Dr appointment, other wise I would have looked up the 'fix' for you.
(2) 84.5 TurboGT 'verts/84.5 TurboGT hatch/(3) 86 SVOs
86 LX 2.3 (project Ratstang)/04 SVT Focus #1276
77 F-350/40 Ford Sedan/67 Fairlane GT 'vert
Reply
#3

.
The exh man bolts for each port are "clocked" in a pattern similar to 10 o'clock and 4 o'clock. Each of the 4 o'clock bolt holes ("lower" row) intersect with a head-bolt hole. And....as unlikely as it may seem, oil from the v/cov area does indeed seep into the h/bolt holes and then subsequently outta those 4 manifold holes, either under the head of the bolt or - in your case - between the manifold and head.

Therefore, as Paul suggested, take out each of those lower manifold bolts, clean 'em and slather some high-temp RTV or Teflon paste on the threads to seal 'em. Also, while the bolt is out, It would probably be a good idea to clean out the hole as best as you can with an aerosol cleaner like Brakleen.

BTW ~ WELCOME to TurboFord! What's your name? 👍
Placerville, California
(former)  '78 2.3T Courier w/blow-thru Autolite 2bbl carb ~ (current)  '87 2.3T Ranger w/PiMP’d EFI
Reply
#4

There's some interesting thread sealer I recently stumbled upon from Cotronics called Resbond 507TS. It's rated to 500°F and might be an alternative to regular paste sealers.

I found it while looking up Resbond 907TS which is a thread locker rated to 2100°F and was mentioned in the install sheet for some superalloy turbo fasteners.
'72 Pinto Runabout-2.3T/T5/MS-II.
I'll show those guys who's in top place, I'll really give'em a hotrod race.
Reply




Users browsing this thread: 1 Guest(s)