Discussion
Hi All,
One more question re my top end engine rebuild. I noticed when dismantling the engine that at some time in the distant past the inlet manifold, fuel rail and plenum had been removed and when reassembled the mechanic had used what looks like liberal amounts of blue hylomar on all the gaskets. Now, I was always taught not to use any sealant on gaskets unless absolutely necessary. So can I ask advice for what to use (if anything) for the following;
- Intake manifold to heads. In the manual it actually tells you to use sealant in 4 places but doesn't tell you what sort. Burton Power suggested the following unless silicone specified but I'm not convinced a non-hardening compound is the way forward. I would have thought some type of silicone sealant is the best soln. http://www.burtonpower.com/catalogsearch/result/?q...
- fuel rail to inlet manifold
- fuel rail to plenum
- manifold gaskets
- core plugs - never done these before. On t'internet some people suggest sealant, others an oil based paint.
Thanks in advance for any help.
Ralph
One more question re my top end engine rebuild. I noticed when dismantling the engine that at some time in the distant past the inlet manifold, fuel rail and plenum had been removed and when reassembled the mechanic had used what looks like liberal amounts of blue hylomar on all the gaskets. Now, I was always taught not to use any sealant on gaskets unless absolutely necessary. So can I ask advice for what to use (if anything) for the following;
- Intake manifold to heads. In the manual it actually tells you to use sealant in 4 places but doesn't tell you what sort. Burton Power suggested the following unless silicone specified but I'm not convinced a non-hardening compound is the way forward. I would have thought some type of silicone sealant is the best soln. http://www.burtonpower.com/catalogsearch/result/?q...
- fuel rail to inlet manifold
- fuel rail to plenum
- manifold gaskets
- core plugs - never done these before. On t'internet some people suggest sealant, others an oil based paint.
Thanks in advance for any help.
Ralph
Hi Ralph, if you are buying anything of Burton Power I would talk to them direct, they are very helpful and know these engines.
When these engines were new we would have used a non setting gasket compound (Hematite?)if anything, and it worked fine, silicone simply wasnt generally available. However I do tend to use Hylomar now. There is one big problem with Hylomar. If any bits come off into the oil (or petrol in some instances) it tends to 'ball' and to be carried with the flow. Those bits can very easily block oilways. In that respect Hematite is safer. If I use Hylomar I am careful to use the absolute minimum necessary on a light 'skin' coat, and that isnt as easy as the brush on Hematite.
When these engines were new we would have used a non setting gasket compound (Hematite?)if anything, and it worked fine, silicone simply wasnt generally available. However I do tend to use Hylomar now. There is one big problem with Hylomar. If any bits come off into the oil (or petrol in some instances) it tends to 'ball' and to be carried with the flow. Those bits can very easily block oilways. In that respect Hematite is safer. If I use Hylomar I am careful to use the absolute minimum necessary on a light 'skin' coat, and that isnt as easy as the brush on Hematite.
Back in "my day" I worked on a lot of the earlier Ford V engines, the Essex V4 and V6. Blue Hylomar was the Ford approved sealant, anyone bringing a tube of red Hermatite into the workshop would probably have been sacked!
Have a read of this
Ford appear to be very good at letting reputable Car Clubs reproduce their obsolete Workshop Manuals
Page 1 lists two types of sealant required, when you get to manifold re-fitting it refers to one of them as Wellseal
Not saying "this is right" but on mine I went for a light smear of Hylomar where the waterways come into the manifold and a little silicone type sealant at either end, where the thick parts are, to help seal in the corners between block, heads and manifold... where the manual says to use Wellseal (hadn't got any
)
No sealant for plenum to fuel rail to manifold as this is only subject to air pressure. Sealant will just make a mess when you remove it to re-torque the bolts.
wellseal is probably also good for core plugs.
Have a read of this
Ford appear to be very good at letting reputable Car Clubs reproduce their obsolete Workshop Manuals
Page 1 lists two types of sealant required, when you get to manifold re-fitting it refers to one of them as Wellseal
Not saying "this is right" but on mine I went for a light smear of Hylomar where the waterways come into the manifold and a little silicone type sealant at either end, where the thick parts are, to help seal in the corners between block, heads and manifold... where the manual says to use Wellseal (hadn't got any
)No sealant for plenum to fuel rail to manifold as this is only subject to air pressure. Sealant will just make a mess when you remove it to re-torque the bolts.
wellseal is probably also good for core plugs.
Edited by phillpot on Wednesday 3rd June 16:54
Wellseal is the best !!! have used it almost daily for the past 30plus years don't get the bits blocking the strainer if you use it on all gaskets inc head sparingly you will have an oil tight engine If it's good enough for RR is good enough for me. Mind you have to buy it in box quantity as not easy to get hold of. Richard
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