B10 V8 oil burner
B10 V8 oil burner
My B10 V8 was burning a lot of oil so I have decided to get the engine fixed.
The engine has done 285.000 km / 177.000 miles
The standard bore is 93 mm. The new bore will be 94 mm and I will get new oversize pistons from Germany.
94 mm bore makes the cylinder walls even thinner than before but I guess it will be ok with metal head gaskets.
I have found information from 2002 about Racing Dynamics' Dusseldorf boring the M62 blocks from 93 mm to 94 mm
http://www.m5board.com/vbulletin/alpina ... -4-8s.html
Do you know if this has worked for others?
The engine has done 285.000 km / 177.000 miles
The standard bore is 93 mm. The new bore will be 94 mm and I will get new oversize pistons from Germany.
94 mm bore makes the cylinder walls even thinner than before but I guess it will be ok with metal head gaskets.
I have found information from 2002 about Racing Dynamics' Dusseldorf boring the M62 blocks from 93 mm to 94 mm
http://www.m5board.com/vbulletin/alpina ... -4-8s.html
Do you know if this has worked for others?
Alpina B10 V8 1999 4,6 347 HP http://www.bmw540.eu/Alpina_B10_V8.htm
BMW 540 E34 1994 4,0 286 HP - Sold
BMW 735 E32 1986 3,8 257 HP - Sold
BMW 745 E23 1981 3,2 turbo 252 HP - Sold
BMW 525 E28 1985 2,5 150 HP - Sold
BMW 540 E34 1994 4,0 286 HP - Sold
BMW 735 E32 1986 3,8 257 HP - Sold
BMW 745 E23 1981 3,2 turbo 252 HP - Sold
BMW 525 E28 1985 2,5 150 HP - Sold
I'm sure I read somewhere that you couldn't over bore these engines, but I can't recall where I read this?
When ALpina made the larger V8 (the S maybe?) they had their own castings made as they couldn't bore out the BMW offering, pretty sure that was the case but happy to be corrected if thats wrong.
When ALpina made the larger V8 (the S maybe?) they had their own castings made as they couldn't bore out the BMW offering, pretty sure that was the case but happy to be corrected if thats wrong.
Former BMW CC 7 register chairman
2000 e39 B10 V8 Touring
1985 e23 B10 (sold)
1995 B3 saloon switchtronic (sold)
2000 e39 B10 V8 Touring
1985 e23 B10 (sold)
1995 B3 saloon switchtronic (sold)
Thanks for your comments.
I had to add 1 liter of oil for every 400 kilometers / 248 miles so it was time to do something.
The engine was pulled out and it it showed that 2 cylinder walls was badly damaged and the others was very worn.
It had to be bored til 94 mm to get clean cylinder walls.
I plan to order the 8 oversize pistons on monday.
The cost will be the same as buying a new engine block and 8 new pistons for a X5 4,6 IS which should fit in B10 V8 single vanos.
I had to add 1 liter of oil for every 400 kilometers / 248 miles so it was time to do something.
The engine was pulled out and it it showed that 2 cylinder walls was badly damaged and the others was very worn.
It had to be bored til 94 mm to get clean cylinder walls.
I plan to order the 8 oversize pistons on monday.
The cost will be the same as buying a new engine block and 8 new pistons for a X5 4,6 IS which should fit in B10 V8 single vanos.
Alpina B10 V8 1999 4,6 347 HP http://www.bmw540.eu/Alpina_B10_V8.htm
BMW 540 E34 1994 4,0 286 HP - Sold
BMW 735 E32 1986 3,8 257 HP - Sold
BMW 745 E23 1981 3,2 turbo 252 HP - Sold
BMW 525 E28 1985 2,5 150 HP - Sold
BMW 540 E34 1994 4,0 286 HP - Sold
BMW 735 E32 1986 3,8 257 HP - Sold
BMW 745 E23 1981 3,2 turbo 252 HP - Sold
BMW 525 E28 1985 2,5 150 HP - Sold
-
- ALP
- Posts: 221
- Joined: Sat Mar 07, 2009 8:12 pm
- Location: Northumberland
I'm with the other guys - I'm not sure you can just bore these engines? Mine had major engine work a good while ago but it was bored and then (steel?) liners were fitted. Still running the standard pistons.
These are an alloy block engine so if they're bored out the bores would need to be treated - NikaSil or similar or lined. I could be wrong and treating the bores might be doable these days.
These are an alloy block engine so if they're bored out the bores would need to be treated - NikaSil or similar or lined. I could be wrong and treating the bores might be doable these days.
1997 B10 v8 #134
2002 B10 3.3 #261 (Sold)
1973 BMW 2002A
1991 Mini Cooper
1968 Mini Cooper
2002 B10 3.3 #261 (Sold)
1973 BMW 2002A
1991 Mini Cooper
1968 Mini Cooper
After being bored, the cylinders will be treated with silicon.
The work is done by a BMW-specialist and it looks like he knows what he is doing.
The work is done by a BMW-specialist and it looks like he knows what he is doing.
Alpina B10 V8 1999 4,6 347 HP http://www.bmw540.eu/Alpina_B10_V8.htm
BMW 540 E34 1994 4,0 286 HP - Sold
BMW 735 E32 1986 3,8 257 HP - Sold
BMW 745 E23 1981 3,2 turbo 252 HP - Sold
BMW 525 E28 1985 2,5 150 HP - Sold
BMW 540 E34 1994 4,0 286 HP - Sold
BMW 735 E32 1986 3,8 257 HP - Sold
BMW 745 E23 1981 3,2 turbo 252 HP - Sold
BMW 525 E28 1985 2,5 150 HP - Sold
The car runs great with the new 94 mm bore.
Timing chain guides and chains was also replaced.
The head gaskets are 93.5 mm so the pistons needed a little extra work to make room for the head gaskets.
So now I have a B10 V8 4.7 liter
It pulls much harder in the low revs.
Timing chain guides and chains was also replaced.
The head gaskets are 93.5 mm so the pistons needed a little extra work to make room for the head gaskets.
So now I have a B10 V8 4.7 liter
It pulls much harder in the low revs.
Alpina B10 V8 1999 4,6 347 HP http://www.bmw540.eu/Alpina_B10_V8.htm
BMW 540 E34 1994 4,0 286 HP - Sold
BMW 735 E32 1986 3,8 257 HP - Sold
BMW 745 E23 1981 3,2 turbo 252 HP - Sold
BMW 525 E28 1985 2,5 150 HP - Sold
BMW 540 E34 1994 4,0 286 HP - Sold
BMW 735 E32 1986 3,8 257 HP - Sold
BMW 745 E23 1981 3,2 turbo 252 HP - Sold
BMW 525 E28 1985 2,5 150 HP - Sold