Pennock's Fiero Forum
  Technical Discussion & Questions
  Rear Main Seal Fiero GT, 2.8 V6, 5spd Getrag 282

Post New Topic  Post A Reply
Email This Page to Someone! | Printable Version


next newest topic | next oldest topic
Rear Main Seal Fiero GT, 2.8 V6, 5spd Getrag 282 by Ponnari
Started on: 03-16-2012 04:16 PM
Replies: 7 (1341 views)
Last post by: LornesGT on 05-13-2014 11:07 PM
Ponnari
Member
Posts: 542
From: Seattle,WA, USA
Registered: Dec 2011


Feedback score:    (7)
Leave feedback

Rate this member

Report this Post03-16-2012 04:16 PM Click Here to See the Profile for PonnariSend a Private Message to PonnariEdit/Delete MessageReply w/QuoteDirect Link to This Post
Hello,
I'm new posting here but have enjoyed this site for years. I figured for sure someone here would know the answer to my question.

OK, dumb question,
Getting ready to install new clutch in my 86 GT 2.8 getrag 5spd, and want to replace the 2.8's rear main seal at the same time. Is this easy to do? Can someone list the details on how to do this after the trans and flywheel are off the motor. Pic's would be a great help also.

any help is greatly appreciated!
IP: Logged
PFF
System Bot
rogergarrison
Member
Posts: 49601
From: A Western Caribbean Island/ Columbus, Ohio
Registered: Apr 99


Feedback score: N/A
Leave feedback





Total ratings: 552
Rate this member

Report this Post03-16-2012 04:49 PM Click Here to See the Profile for rogergarrisonClick Here to Email rogergarrisonSend a Private Message to rogergarrisonEdit/Delete MessageReply w/QuoteDirect Link to This Post
There are 3 types of rear mains I know of. One is a split 50/50 2 piece one, another is the single disk type that slips over the crank. Older one (dont know if any Fieros had) is pretty much a tarred piece of rope put in a groove in the main cap/block. It would be a good idea since you do have to have the trans out to replace the single disk one.
IP: Logged
firejo24
Member
Posts: 651
From: Redmond, WA
Registered: Feb 2012


Feedback score: N/A
Leave feedback

Rate this member

Report this Post03-16-2012 05:17 PM Click Here to See the Profile for firejo24Send a Private Message to firejo24Edit/Delete MessageReply w/QuoteDirect Link to This Post
Well I can find three different types of seals that it could be. Two from Alldata (which uses factor service manuals) and one from Haynes. The two from Alldata are a single piece seal the requires removal of the crankshaft and the other that is a single piece seal but can be removed without having to remove the crankshaft. The latter of the two is very similar to a wheel bearing seal and they are quite easy to change (pry it out and tap in the new one). The other is self explanatory I.E. remove the crank. Haynes shows a two piece lip seal that’s not too hard to replace but does require the removal of the end bearing cap. Defiantly something you want to do if possible as there’s nothing worse than having to replace the clutch a second time because it got coated with oil.
IP: Logged
trotterlg
Member
Posts: 1378
From: WA
Registered: Aug 2011


Feedback score: (2)
Leave feedback

Rate this member

Report this Post03-16-2012 05:48 PM Click Here to See the Profile for trotterlgClick Here to Email trotterlgSend a Private Message to trotterlgEdit/Delete MessageReply w/QuoteDirect Link to This Post
You will likely have the single piece unit that presses in. It is ment to be installed using a tool to press it in place, but I think you could probably install it by carefully hammering it in. There are different types of this seal also, the later ones made for automatics are a rubber seal only, some have the rubber seal and an outter felt seal to keep the clutch dust out of the seal area, I will see if I can find the GM part number for this one, but I am sure either would do fine for the time you will be needing it to work. Larry
IP: Logged
Bloozberry
Member
Posts: 7760
From:
Registered: Jan 2009


Feedback score: N/A
Leave feedback





Total ratings: 308
Rate this member

Report this Post03-16-2012 06:23 PM Click Here to See the Profile for BloozberrySend a Private Message to BloozberryEdit/Delete MessageReply w/QuoteDirect Link to This Post
This is a modern, metric engine so you won't find any rope seals for it. There may be some 2 piece seals out there, but by far the best and likely only thing you'll find is the one piece seal. To get the old seal out without removing the oil pan and rear crank bearing cap, you'll have to puncture the side of the old seal and try to pry it out without scoring the crankshaft journal. If you're not successful then you'll have to remove the oil pan and the rear bearing cap. Here are a couple pictures of a typical one piece seal on a 2.8L engine:





It normally gets slipped onto the crankshaft before the rear bearing cap is installed but it may be possible to install it without removing the cap. The same type of seal is used on almost every engine out there now. I installed my Northstar engine rear crank seal by making a simple tool that pushes the seal into place evenly and squarely rather than trying to hammer it in and possibly ruin it. I just used an old piece of PVC pipe and a metal plate that I drilled to mate with a couple of the flywheel holes and drew it into place with some bolts:



IP: Logged
MarkS
Member
Posts: 437
From: Flemington, NJ
Registered: Mar 2006


Feedback score: N/A
Leave feedback

Rate this member

Report this Post03-16-2012 08:47 PM Click Here to See the Profile for MarkSClick Here to Email MarkSSend a Private Message to MarkSEdit/Delete MessageReply w/QuoteDirect Link to This Post
Just took a peek at the Rock Auto site. Looks like two 1 piece seals were used- 1st design & 2nd design- in 86. The outer diameter differs by about 0.1" (2.5mm). The 1st design is 3.5x" and the 2nd 3.6x". This is from a website so should be verified but a quick diameter measurement of the existing seal will ultimately tell the tale I imagine.

BR's,

Mark

------------------
86 SE V6 4 speed
86 SE V6 Auto
2008 G6 GT "Street" Coupe
2005 Buick 3.6 Rendezvous
2001 Olds Silhouette (AKA The Band Van)

IP: Logged
Ponnari
Member
Posts: 542
From: Seattle,WA, USA
Registered: Dec 2011


Feedback score:    (7)
Leave feedback

Rate this member

Report this Post03-17-2012 03:12 AM Click Here to See the Profile for PonnariSend a Private Message to PonnariEdit/Delete MessageReply w/QuoteDirect Link to This Post
WOW,
Thanks to everyone who posted for the great info! A speacial thanks to Bloozberry for the fantastic photos!

I look forward to spending a lot of time at this site. I have some tips and tricks I want to post that might help other users. Gonna start getting photos and info put together just as soon as I get my GT back on the road.

Have a great weekend everybody!
IP: Logged
LornesGT
Member
Posts: 1301
From: Granite City, IL
Registered: Jan 2013


Feedback score: (4)
Leave feedback

Rate this member

Report this Post05-13-2014 11:07 PM Click Here to See the Profile for LornesGTSend a Private Message to LornesGTEdit/Delete MessageReply w/QuoteDirect Link to This Post
Thanks for the pics bloozberry!! Looks like 3" PVC will do. The plastic and more sturdy portion of the seals faces inward, hopefully I don't muck it up.
IP: Logged

next newest topic | next oldest topic

All times are ET (US)

Post New Topic  Post A Reply
Hop to:

Contact Us | Back To Main Page

Advertizing on PFF | Fiero Parts Vendors
PFF Merchandise | Fiero Gallery | Ogre's Cave
Real-Time Chat | Fiero Related Auctions on eBay



Copyright (c) 1999, C. Pennock