Ford 2.8 V6 Inlet manifold leaks.
Discussion
Recently finished the rebuild of the turbocharged 2.8 V6 in my TVR very very impressed with the engine, but much to my dismay it's started using a little water, when I pump up the pressure in the cooling system I can turn the steam from the exhaust on or off as desired, there is also a small amount of coolant in the oil. I 95% sure the problem lies with the inlet manifold gasket, and that the fact its only torqued down to about 10 lb/ft (from memory)as spec in the workshop manual.
The problem I guess is made worse with the fact there are six fairly large inlet ports with boost pressure in there, also trying to lift the manifold from the heads.
Does anyone have a soloution that may help my problems, inlet manifold gasket leakage is not uncommon on these engines I believe. I should also mention that during the re-assembly I used wellseal on both faces of the gasket as its non hardening, so should alow for a little movement. I have a fresh, quality gasket ready for the reassembly, once I get this sorted I can then head off to the rollers.
Regards,
Chris.
Edited to say....
Manifold now removed, and there is no obvious signs of leakage? Maybe it is a head / head gasket problem?
Reading my Haynes manual on the engine.... the carb engine has the manifold pulled down in 5 stages No1 5 lb/ft No2 8 lb/ft No3 13 lb/ft No 4 17 lb/ft No 5 15 mins running then 17 lb/ft, however the Injected engine only one stage 13 lb/ft, why is this. The manifolds seem identical regarding the way they mount to the engine, both using 8 off M8 bolts/studs? Why?
The problem I guess is made worse with the fact there are six fairly large inlet ports with boost pressure in there, also trying to lift the manifold from the heads.
Does anyone have a soloution that may help my problems, inlet manifold gasket leakage is not uncommon on these engines I believe. I should also mention that during the re-assembly I used wellseal on both faces of the gasket as its non hardening, so should alow for a little movement. I have a fresh, quality gasket ready for the reassembly, once I get this sorted I can then head off to the rollers.
Regards,
Chris.
Edited to say....
Manifold now removed, and there is no obvious signs of leakage? Maybe it is a head / head gasket problem?
Reading my Haynes manual on the engine.... the carb engine has the manifold pulled down in 5 stages No1 5 lb/ft No2 8 lb/ft No3 13 lb/ft No 4 17 lb/ft No 5 15 mins running then 17 lb/ft, however the Injected engine only one stage 13 lb/ft, why is this. The manifolds seem identical regarding the way they mount to the engine, both using 8 off M8 bolts/studs? Why?
Edited by taz turbo on Saturday 19th August 15:14
Jaguar techs in the U.S. use this stuff and it is hard to get separated once cured. I had to disassemble a 4.0 supercharged 2 weeks ago that was held together with the stuff and after curing I'm not sure if you would need the bolts...
To get the bed plate and pan off I had to put a 2X4 against the steel pry tabs and give several good whacks with a large ballpeen as I couldn't pry them apart.
Link:www.permatex.com/products/automotive/automotive_gasketing/gasket_makers/auto_Permatex_Ultra_Grey_Rigid_High-Torque_RTV_Silicone_Gasket_Maker.htm
To get the bed plate and pan off I had to put a 2X4 against the steel pry tabs and give several good whacks with a large ballpeen as I couldn't pry them apart.
Link:www.permatex.com/products/automotive/automotive_gasketing/gasket_makers/auto_Permatex_Ultra_Grey_Rigid_High-Torque_RTV_Silicone_Gasket_Maker.htm
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