ROGUE TROOPER Posted May 18, 2009 Share Posted May 18, 2009 Just how far on its side can a RV8 run before it has problems such as oil starvation, oil pooling, fuel problems etc? Oh and what is its Configuration (60° V8?) Thanks Quote Link to comment Share on other sites More sharing options...
BogMonster Posted May 19, 2009 Share Posted May 19, 2009 I thought they were 90 deg V8 but not 100% sure... Presumably the engine will run at whatever angles LR specify for the vehicle which IIRC is something like 45 deg fore and aft and 30 deg side slope? Quote Link to comment Share on other sites More sharing options...
Escape Posted May 19, 2009 Share Posted May 19, 2009 I've seen a standard 3.5Efi run happily at about 40° sideslope. The driver seems less at ease though. Quote Link to comment Share on other sites More sharing options...
darkman Posted May 19, 2009 Share Posted May 19, 2009 In all my years trialing a v8 90 i have never had a prob with the oil pressure light coming on or the engine cutting out, i can say that you will be on your roof or side before you have a problem! Quote Link to comment Share on other sites More sharing options...
bill van snorkle Posted May 19, 2009 Share Posted May 19, 2009 All V8's with the exception of Rover V8 Meteorites (cut down V12 Meteors) to my knowledge are 90 degree for inherant balance reasons. V12 and V6 engines for the same reasons should be 60 degree, unless they are fitted with a balance shaft, in which case anything goes. I think! Quote Link to comment Share on other sites More sharing options...
will_warne Posted May 19, 2009 Share Posted May 19, 2009 All V8's with the exception of Rover V8 Meteorites (cut down V12 Meteors) to my knowledge are 90 degree for inherant balance reasons. V12 and V6 engines for the same reasons should be 60 degree, unless they are fitted with a balance shaft, in which case anything goes. I think! Bill, I think there are a few modern V8s with lower bank angles but these tend to be very racey engines with flat plane cranks (the TVR's own V8s, Ferrari V8s etc). Quote Link to comment Share on other sites More sharing options...
lansalot Posted May 19, 2009 Share Posted May 19, 2009 keep going until either the oil light comes on or your arse starts twitching Quote Link to comment Share on other sites More sharing options...
dirtydiesel Posted May 19, 2009 Share Posted May 19, 2009 I've had a 5ltr tvr lump hydraulic on it's own oil after about 20mins sat on a 50-60 degree sideslope. Quote Link to comment Share on other sites More sharing options...
missingsid Posted May 20, 2009 Share Posted May 20, 2009 I've had a 5ltr tvr lump hydraulic on it's own oil after about 20mins sat on a 50-60 degree sideslope. Hi Dirtydiesel, When it does this will it bend something or just come to a halt undamaged? Marc. Quote Link to comment Share on other sites More sharing options...
Gromit Posted May 20, 2009 Share Posted May 20, 2009 When it does this will it bend something or just come to a halt undamaged? I would imagine that all the black smoke beforehand indicating oil in cylinders, would give you some warning of the impending halt/explosion* (*or "spontaneously disaassemble" as Sony famously described their laptop battery fault) Quote Link to comment Share on other sites More sharing options...
dirtydiesel Posted May 20, 2009 Share Posted May 20, 2009 Hi Dirtydiesel,When it does this will it bend something or just come to a halt undamaged? Marc. It smoked a bit, then missfired a lot then bend 2 rods. Quote Link to comment Share on other sites More sharing options...
missingsid Posted May 21, 2009 Share Posted May 21, 2009 It smoked a bit, then missfired a lot then bend 2 rods. I had heard from hearsay at trials that the max angle for a RV8 was a 45 deg side slope, but I had not seen any actual evidence. Marc. Quote Link to comment Share on other sites More sharing options...
darkman Posted May 21, 2009 Share Posted May 21, 2009 I had heard from hearsay at trials that the max angle for a RV8 was a 45 deg side slope, but I had not seen any actual evidence.Marc. 45 is safe even with a lift Quote Link to comment Share on other sites More sharing options...
bathtub Posted May 21, 2009 Share Posted May 21, 2009 Hi Dirtydiesel,When it does this will it bend something or just come to a halt undamaged? Marc. UMMMMMMMMMMMMMMMM & then it goes bang 5 dyas later in Croatia Quote Link to comment Share on other sites More sharing options...
Adrian Turner Posted May 22, 2009 Share Posted May 22, 2009 UMMMMMMMMMMMMMMMM & then it goes bang 5 dyas later in Croatia And then leave's a long Oil slick with load's of metal in it and you end up with a large paper weight!!! Quote Link to comment Share on other sites More sharing options...
Steve 90 Posted May 22, 2009 Share Posted May 22, 2009 Been thinking about this quite a lot lately (mainly due to having just fitted a V8). Firstly, on an EFI (I assume a carb'd motor stops before its a problem), does it usually happen one way more than the other? I assume the oil floods the rocker cover on the low side and gets picked up by the intake via the breather. In which case the RH rocker has the breather in it so the RH side is going to be the one to cause issues. If that's the case would some re routing of the breather help. Maybe a breather to both rocker covers so the engine can breath through the higher/clear rocker cover rather than pushing oil up the lower/oil filled rocker cover???? Anyone any idea's??? It could also be the valve stem oil seals letting oil passed but I'd be surprised if seals in good condition would allow enough past to lock the motor. Maybe enough to make it smoke for a while but I can live with that! So any idea's either the reasons for it or how to stop it??? Steve. Quote Link to comment Share on other sites More sharing options...
steve_d Posted May 22, 2009 Share Posted May 22, 2009 Steve If as you say the mode is oil drawn into the breather then modified covers with breathers grafted into the inboard top edge of both covers and joined by a tee piece would take the angle further and probably beyond the point the vehicle itself will roll. I agree the valve guides are not the culprit. Steve Quote Link to comment Share on other sites More sharing options...
darkman Posted May 23, 2009 Share Posted May 23, 2009 Been thinking about this quite a lot lately (mainly due to having just fitted a V8).Firstly, on an EFI (I assume a carb'd motor stops before its a problem), does it usually happen one way more than the other? I assume the oil floods the rocker cover on the low side and gets picked up by the intake via the breather. In which case the RH rocker has the breather in it so the RH side is going to be the one to cause issues. If that's the case would some re routing of the breather help. Maybe a breather to both rocker covers so the engine can breath through the higher/clear rocker cover rather than pushing oil up the lower/oil filled rocker cover???? Anyone any idea's??? It could also be the valve stem oil seals letting oil passed but I'd be surprised if seals in good condition would allow enough past to lock the motor. Maybe enough to make it smoke for a while but I can live with that! So any idea's either the reasons for it or how to stop it??? Steve. take both rocker cover breathers to a catch tank mounted on the bulkhead and return pipes back to the inlets Quote Link to comment Share on other sites More sharing options...
discomikey Posted May 23, 2009 Share Posted May 23, 2009 make the breather come out of the engine bay and up behind a snorkle (if fitted), it wont be in the intake system, and you could add a catcher tank to it. or if no snorkle then high up in engine bay with little filter on. mikey Quote Link to comment Share on other sites More sharing options...
jules Posted May 24, 2009 Share Posted May 24, 2009 I've been competing and driven a 4.2v8 along a 50-60 deg trench on its doors and only being held up by its winches but the whole time I knew I was asking too much and at any time the oil light could have come on and my co-driver was watching for smoke to whole time. As it happens it caused a air lock and lead to the truck over heating and failing the timed section. unless your running a dry sump which will only help a bit your going to struggle with most engines than put out any real power on a side slop. Quote Link to comment Share on other sites More sharing options...
Boothy Posted May 24, 2009 Share Posted May 24, 2009 I've had mine at some stupid angles (especially with the mid winch) and only once had a problem at Wern-Du, Corwen, last year when it stood up vertical on its nose and it dropped oil pressure which is the point I turned it off, I use a mechanical gauge and keep my eye on it (no not the glass one) when it starts defying gravity. It was up to 80-85* stood up, bruised my rids (even with padding) on the harnesses and the lad could'nt reach the rear winch rope for ages to pull it back down It didn't fully hydraulic but turned over very slowly so I left it a couple of mins and hey presto, incidentally I don't run valve guide rubbers any more, keeps the top moist, just smokes a little bit at times but I can live with that. You will find the point of damage when it all goes t*ts up and stops, shall we all buy a land meter and report in ? Quote Link to comment Share on other sites More sharing options...
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