Rank: Member
Groups: Registered
Joined: 11/03/2005(UTC)
Posts: 251
|
Hi, My mate has a HQ coupe with a 308. The motor was rebuilt about 15 years ago but has only done about 50,000km's (it doesn't get out much). He started it recently and it was very noisy mechanically. he has stripped the oil pump and it appears that the impellors have been chewing into the end plate on the pump. The oil filter has no obvious oil in it which is a worry as well. The impellors seem to have a bit of play on the shaft.
- Has anyone had this sort of problem before?
- Is it likely to be a failure in the pump or where it is driven from inside the engine?
|
|
|
|
|
|
Rank: Guest
Groups: Guests
Joined: 2/09/2015(UTC)
Posts: 43,977
Was thanked: 5 time(s) in 5 post(s)
|
Early HQ's had severe oil pump problems, due in the main to an unauthorised spec change to the pump drive shaft that comes down from the cam. The "tang" at the pump end of the shaft was renowned for breaking off, with a disastrous result. Prior to dis Edited by user Saturday, 14 January 2006 8:23:20 PM(UTC)
| Reason: Not specified
|
|
|
|
|
|
Rank: Guest
Groups: Guests
Joined: 2/09/2015(UTC)
Posts: 43,977
Was thanked: 5 time(s) in 5 post(s)
|
Thanks Dave. We also noted that the impellor and shaft measurement is longer than specified in the manual (by about 2.5 mm). Can the impellor slide on this shaft over time thus making the whole thing longer or is that unlikely. This oil pump is an afterm
|
|
|
|
|
|
Rank: Guest
Groups: Guests
Joined: 2/09/2015(UTC)
Posts: 43,977
Was thanked: 5 time(s) in 5 post(s)
|
I guess anything is possible. I'm not familiar woth aftermarket pumps, but I presume the impellor will be splined and pressed on to the shaft, which means that the possibility to move is there. If it is assembled as per my guess, you could press the imp
|
|
|
|
|
|
Rank: Guest
Groups: Guests
Joined: 2/09/2015(UTC)
Posts: 43,977
Was thanked: 5 time(s) in 5 post(s)
|
Best to fit a new standard volume pump.
if it ain't broke we can improve it.
Cheers Steve
|
|
|
|
|
|
Rank: Guest
Groups: Guests
Joined: 2/09/2015(UTC)
Posts: 43,977
Was thanked: 5 time(s) in 5 post(s)
|
That would be my preferred option too Steve
Cheers Dave
|
|
|
|
|
|
Rank: Guest
Groups: Guests
Joined: 2/09/2015(UTC)
Posts: 43,977
Was thanked: 5 time(s) in 5 post(s)
|
Thanks Guys, My mate has a weird idea that he can rebuild the pump. I reckon it's not worth the effort or the risk to the engine (assuming it's not rooted already). I'll pass on your advice and push him towards a new pump.
Cheers.
|
|
|
|
|
|
Rank: Guest
Groups: Guests
Joined: 2/09/2015(UTC)
Posts: 43,977
Was thanked: 5 time(s) in 5 post(s)
|
If its got scoring in the gear area throw it in the bin.
if it ain't broke we can improve it.
Cheers Steve
|
|
|
|
|
|
Rank: Veteran
Groups: Registered, Veteran
Joined: 1/03/2005(UTC)
Posts: 1,991
Was thanked: 2 time(s) in 2 post(s)
|
That scoring is little bits of steel going through the engine. Dice the pump and fit a standard one. 90% of engines don't need a high pressure pump they only serve to wash out the bearings and cause more problems than they solve. Unless its a full on engi
|
|
|
|
|
|
Rank: Guest
Groups: Guests
Joined: 2/09/2015(UTC)
Posts: 43,977
Was thanked: 5 time(s) in 5 post(s)
|
The high volume pumps only tend to fill rocker covers with oil when it should be down low in engine,the oil is much better around oil pump pick up.
if it ain't broke we can improve it.
Cheers Steve
|
|
|
|
|
|
Forum Jump
You cannot post new topics in this forum.
You cannot reply to topics in this forum.
You cannot delete your posts in this forum.
You cannot edit your posts in this forum.
You cannot create polls in this forum.
You cannot vote in polls in this forum.
