Welcome to Just Commodores, a site specifically designed for all people who share the same passion as yourself.

New Posts Contact us

Just Commodores Forum Community

It takes just a moment to join our fantastic community

Register

Front Crank Seal Came Out

JBrown9

New Member
Joined
Feb 11, 2024
Messages
5
Reaction score
0
Points
1
Age
45
Location
New Zealand
Members Ride
Wingless Sprint
Hi,

Just trying to find out if someone else had had this happen. For reference its on a Wingless Sprintcar, new front seal had only done a few hours on a completely rebuilt engine. Lost oil pressure when racing, found that oil was coming from the front of the engine, when I removed the balancer the seal came off in the back of it. The seal still looks like new and is still a press fit into the timing cover and you can also see in the timing cover that it was seated the whole way in.

Im struggling to find a reason for this and also why so much oil would come out of there to lose oil pressure and run the bearings. Any help is appreciated.
 

MikeC

Well-Known Member
Joined
Jan 10, 2010
Messages
1,119
Reaction score
472
Points
83
Members Ride
VQ Statesman
What engine?
 

Immortality

Can't live without smoky bacon!
Staff member
Joined
Apr 15, 2006
Messages
22,556
Reaction score
20,278
Points
113
Location
Sth Auck, NZ
Members Ride
HSV VS Senator, VX Calais II L67
Must be talking about a V6 motor.

Some sort of problem with the oil pump or timing cover pressurising the area between the pump and seal would be my guess.
 

shane_3800

Well-Known Member
Joined
Aug 13, 2011
Messages
4,202
Reaction score
1,781
Points
113
Age
35
Location
places
Members Ride
vr commo
You might have an oil pump issue.
Or the seal popped out and it spewed oil all over the track.

You might need to centre punch a whole heap of dents around the seal interference area, and add a bit of flange sealer.

It's the seal quality these days in my opinion.
 

JBrown9

New Member
Joined
Feb 11, 2024
Messages
5
Reaction score
0
Points
1
Age
45
Location
New Zealand
Members Ride
Wingless Sprint
Must be talking about a V6 motor.

Some sort of problem with the oil pump or timing cover pressurising the area between the pump and seal would be my guess.
That was my guess too as its the only thing that makes sense, its more the how and what i can do to stop it happening again.
 

Immortality

Can't live without smoky bacon!
Staff member
Joined
Apr 15, 2006
Messages
22,556
Reaction score
20,278
Points
113
Location
Sth Auck, NZ
Members Ride
HSV VS Senator, VX Calais II L67
Have you taken the pump out of the housing?

I'd be looking for a cracked housing or possibly a blockage.
 

Immortality

Can't live without smoky bacon!
Staff member
Joined
Apr 15, 2006
Messages
22,556
Reaction score
20,278
Points
113
Location
Sth Auck, NZ
Members Ride
HSV VS Senator, VX Calais II L67
Any Idea what your oil pressure was before the failure?
 

JBrown9

New Member
Joined
Feb 11, 2024
Messages
5
Reaction score
0
Points
1
Age
45
Location
New Zealand
Members Ride
Wingless Sprint
Have you taken the pump out of the housing?

I'd be looking for a cracked housing or possibly a blockage.
I havent pulled the pump out yet. The drain back hole inside the seal housing was clear. Oil pressure was fine beforehand so I dont think it was blocked. Before I pulled the engine apart I topped up the oil and refired it and oil pressure was decent but down 25 psi from where it was before so again dont think theres a blockage in the oil pump. I do have more timing covers so may just swap the whole thing out including the pump once I get everything back together.
 
Top