|
||
|
8th September 2015, 12:28 | #1 |
I really should get out more.......
P6B, L550, Imp, F56, Commando Join Date: Nov 2006
Location: Aberdeenshire
Posts: 2,886
Thanks: 352
Thanked 677 Times in 440 Posts
|
How To LKB109291 K-Series Inlet Manifold Modification
Attached information on a recurring problem and possible solution for the K-Series inlet manifold.
Do you have: Coolant level dropping but cant be seen where from? Uneven idle? Super clean spark plugs on cyclinder 1 and 4? Vacumm leak? No matter how hard you tighten the nuts on the manifold, even though you have fitted the latest black viton gasket might not have sufficient squeeze to seal effectively. Perhaps this will help improve gasket squeeze. Last edited by Lovel; 15th June 2016 at 14:41.. |
8th September 2015, 17:28 | #2 |
MG ZT Join Date: Jan 2011
Location: Newcastle Upon Tyne
Posts: 20,151
Thanks: 3,565
Thanked 10,837 Times in 5,718 Posts
|
Or simply file the brass bushes flush with the joint face of the manifold
Brian |
8th September 2015, 18:36 | #3 |
I really should get out more.......
P6B, L550, Imp, F56, Commando Join Date: Nov 2006
Location: Aberdeenshire
Posts: 2,886
Thanks: 352
Thanked 677 Times in 440 Posts
|
Done that before, but the bush will keep extruding slowly in time over a few miles leading to a leak again. This way you are bypassing the bush and placing a constant long term force on the manifold.
|
8th September 2015, 22:30 | #4 |
Posted a thing or two
mg zt Join Date: Mar 2014
Location: cardigan
Posts: 1,087
Thanks: 28
Thanked 187 Times in 158 Posts
|
I have heard of the vvc manifold being fitted the 75/zt. I have a turbo car here with slow coolant loss which i suspect to be the manifold gasket. I also have an early alloy inlet manifold (rover 200) which does bolt on, anyone tried this?
I guess it could come down to whether the injectors fit, and how to fit the map sensor, but is there anything else? Apologies for hijacking this post |
9th September 2015, 01:06 | #5 | |
MG ZT Join Date: Jan 2011
Location: Newcastle Upon Tyne
Posts: 20,151
Thanks: 3,565
Thanked 10,837 Times in 5,718 Posts
|
Quote:
Treat yourself to one of THESE much much easier Brian |
|
9th September 2015, 07:33 | #6 | |
I really should get out more.......
P6B, L550, Imp, F56, Commando Join Date: Nov 2006
Location: Aberdeenshire
Posts: 2,886
Thanks: 352
Thanked 677 Times in 440 Posts
|
Quote:
Actually you could probably do it with a plain washer, however it needs to be thicker than the stick-out of the brass bushing. The washer needs to slide over the bushing, a 1/2" washer may need a little file out as the bush is 13mm OD, however most washers are stamped out and may mean that the hole size is sufficient to slip over the brass bush anyway. Using the plain washer the angle of the manifold means there may be a tendency to bend the studs if you were too heavy handed upon tightening, whereas the tapered washer will help mitigate this. Last edited by Lovel; 9th September 2015 at 07:39.. |
|
11th September 2015, 10:10 | #7 |
I really should get out more.......
P6B, L550, Imp, F56, Commando Join Date: Nov 2006
Location: Aberdeenshire
Posts: 2,886
Thanks: 352
Thanked 677 Times in 440 Posts
|
Photos of tapered washers in place. A nice neat fit as they slip over and are retained by the brass bush, a much superior long term clamping force on the manifold elastomer seal.
|
12th September 2015, 20:50 | #8 |
Regular poster
Rover 75 Tourer Join Date: Jul 2012
Location: Bristol
Posts: 52
Thanks: 7
Thanked 6 Times in 6 Posts
|
Seems a good idea. After fitting the tapered washers, should the nuts be tightened to the standard torque? Will that crush the plastic manifold?
|
12th September 2015, 21:37 | #9 |
I really should get out more.......
P6B, L550, Imp, F56, Commando Join Date: Nov 2006
Location: Aberdeenshire
Posts: 2,886
Thanks: 352
Thanked 677 Times in 440 Posts
|
The washers spread the load quite wide. Crushing the manifold would be unlikely. I dont know what the torque number should be, M8 thread in alloy perhaps 16-19 Nm. I just give them a firm nip up.
|
5th October 2015, 17:24 | #10 |
This is my second home
1999 75 Connoisseur SE 2.5, 2000 75 Classic SE 2.0, 2012 Lancia Delta 3, 2016 Dacia Sandero Ambiance Join Date: Jan 2007
Location: Kilcreggan
Posts: 3,191
Thanks: 334
Thanked 334 Times in 162 Posts
|
I'm going to give this a try. I've had a slight coolant loss for about a fortnight which I couldn't track down. Just spotted the coolant residue under the inlet manifold.
__________________
The fact there's a highway to hell and only a stairway to heaven says a lot about anticipated traffic numbers..
|
|
|