Pig of a job...
Discussion
... replaced the valley gasket and manifold once, then doubted what I done, so removed the again manifold, wiped off a little Mylomar (used too much) and replaced a second time. Leaving it now. Torqued bolts up to about 45mn. Rocker covers back on. Hopefully it shouldn't leak. I do wish I'd sprayed the rocket covers as I can see a few brush strokes in the sun, but you live and learn. I can always get them powder coated at a later date. May get it back on the road by next week... hopefully!
I didn't remove the heads just the inlet manifold to get to the valley gasket. I was concerned about the Hylomar being sucked into the inlet, so when I removed, there was still plenty smeared on the mating surfaces, so I wiped off any excess that has squeezed out! I just wish I had a specialist guiding me through, but a learning process none the less. Have to put the new PAS hoses back in now, new coolant hoses on their way, fuel hoses at front done, heater rail hoses done, new water pump on its way, followed by full flush and new coolant etc. Have some new trumpets to machine in too, plus the ACT induction system to put on...
It's never ending, but hopefully shouldn't need too much doing for a little while!!!
See below pics:
It's never ending, but hopefully shouldn't need too much doing for a little while!!!
See below pics:
I do tend to worry about stuff I needn't do ... and not worry about the stuff that I should. 
I do think that I can hear mine get really tappety from the rear of the engine at about 2,300 rpm up to about 3,500 rpm and then it's drowned out by everything else - must worse when it's cold and less noticeable when it's hot...
Phil
I do think that I can hear mine get really tappety from the rear of the engine at about 2,300 rpm up to about 3,500 rpm and then it's drowned out by everything else - must worse when it's cold and less noticeable when it's hot...
Phil
ksA900ss said:
My garage checked for camshaft wear by dropping the sump first.
Not sure how they can tell from there but they could....
Good luck and hope it's ok.
Don't think that will help. Maybe for the crankshaft, but not the camshaft. Here's what I saw when I dropped the sump to do the gasket. You can see the crankshaft just behind the oil pick-up pipe.Not sure how they can tell from there but they could....
Good luck and hope it's ok.
Bassfiend229hp said:
How long does it take to get the plenum and everything off down to the valley gasket? I'd really like to check for cam wear but not sure how much work is involved...
Phil
I won't lie Phil, there's a good amount of work involved. You'll also find once you have everything off, you'll want to do a few more things whilst you have access. I'm just glad I haven't done a body-off chassis refurb yet as I'd be spending a fortune!!!Phil
Whilst the plenum was removed, inlet off, valley gasket and exhaust manifolds out, I decided to replace the fuel lines that come from under the bullhead and on the fuel rail (8mm fuel hose). I also decided to replace the two heater rail hoses that run between the bulkhead and the rear of the engine (16mm internal diameter hose). I then replaced the valley gasket, the two rocker gaskets, thermostat gaskets (inc new thermostat afetr the flush), injector seals and also the exhaust gaskets when I get them back on (thanks to yourself, I owe you one!
). I also have an ACT insulator gasket for the trumpet base and will replace the trumpets. I've also gone about cleaning and re-furbing everything as I go, which has added more time again.I took pictures of everything I did and all the bolts and screws etc, so it will help me put it al back together. If you need some images let me know. There's quite a good guide by Colin Haycock on the RV8 web which is helpful.
http://www.rv8r.co.uk/rockerreplace.html
Today, I degreased a few parts of the engine, Waxoiled the chassis under the exhaust manifolds and am awaiting some fresh heat lining for the sides of the engine bay. I've also fitted a new oil pressure switch and put new studs in the for the manifolds. I actually found it much easier to replace the pressure switch by gaining access behind the belt tensioner as opposed to underneath.
New Pressure Switch
Old Pressure Switch
Manifold Studs
Sealed the ends with Duralac
Edited by chris1972 on Monday 6th May 20:41
Edited by chris1972 on Monday 6th May 21:34
Bassfiend229hp said:
I do tend to worry about stuff I needn't do ... and not worry about the stuff that I should.
I do think that I can hear mine get really tappety from the rear of the engine at about 2,300 rpm up to about 3,500 rpm and then it's drowned out by everything else - must worse when it's cold and less noticeable when it's hot...
Phil
Could be the exhaust manifold gasket starting to blow. Listen with a short piece of garden hose near the plugs. Found mine on No 1 cylinder. Now fixed, a pig of a job but managed to do the nearside without dropping the exhaust underneath.I do think that I can hear mine get really tappety from the rear of the engine at about 2,300 rpm up to about 3,500 rpm and then it's drowned out by everything else - must worse when it's cold and less noticeable when it's hot...
Phil
Nice pics Chris.
EGB said:
Could be the exhaust manifold gasket starting to blow. Listen with a short piece of garden hose near the plugs. Found mine on No 1 cylinder. Now fixed, a pig of a job but managed to do the nearside without dropping the exhaust underneath.
Nice pics Chris.
Manifold gaskets were done less than a year ago so I hope that it's not that... Nice pics Chris.
Bassfiend229hp said:
EGB said:
Could be the exhaust manifold gasket starting to blow. Listen with a short piece of garden hose near the plugs. Found mine on No 1 cylinder. Now fixed, a pig of a job but managed to do the nearside without dropping the exhaust underneath.
Nice pics Chris.
Manifold gaskets were done less than a year ago so I hope that it's not that... Nice pics Chris.
Discopotatoes said:
Bassfiend229hp said:
EGB said:
Could be the exhaust manifold gasket starting to blow. Listen with a short piece of garden hose near the plugs. Found mine on No 1 cylinder. Now fixed, a pig of a job but managed to do the nearside without dropping the exhaust underneath.
Nice pics Chris.
Manifold gaskets were done less than a year ago so I hope that it's not that... Nice pics Chris.
I tried with obstruction spanners with no joy, simply because many of the nuts were too close to the manifold to get a ring-spanner fitting on. I think I'll look out for some open ended obstruction spanners. I resorted to using a standard spanner and squeezing my hand down the sides of the manifold or gaining access from underneath.
I've since cut slots in the bolt holes in the hope it facilitates putting them back on and future removal. Eitherway, the job is still a PITA.
I've since cut slots in the bolt holes in the hope it facilitates putting them back on and future removal. Eitherway, the job is still a PITA.
chris1972 said:
I tried with obstruction spanners with no joy, simply because many of the nuts were too close to the manifold to get a ring-spanner fitting on. I think I'll look out for some open ended obstruction spanners. I resorted to using a standard spanner and squeezing my hand down the sides of the manifold or gaining access from underneath.
I've since cut slots in the bolt holes in the hope it facilitates putting them back on and future removal. Eitherway, the job is still a PITA.
When I did mine I sourced various lengths 14mm spanners then bent a few in my vice to get the right angle to make it easier to do the jobI've since cut slots in the bolt holes in the hope it facilitates putting them back on and future removal. Eitherway, the job is still a PITA.
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