Mike6 Posted May 7, 2015 Report Share Posted May 7, 2015 Possibly the silly question of the day but I have been checking timing on the car and thought the easiest way to rotate engine would be to jack up rear of car with both wheels off the ground and then turn by hand. However when I then put in gear the wheels still turn relatively freely and engine doesnt rotate. When I drop car back to ground engine will rotate if I then push car in gear. Is the normal?. The reason for asking is problems with car under load and I just wondered if it could be gearbox related rather than ignition/fuel. Quote Link to comment Share on other sites More sharing options...
Bibs Posted May 7, 2015 Report Share Posted May 7, 2015 Open diff, you'll be able to spin a wheel in gear with both in the air. Quote 88 Esprit NA, 89 Esprit Turbo SE, Evora, Evora S, Evora IPS, Evora S IPS, Evora S IPS SR, Evora 400, Elise S1, Elise S1 111s, Evora GT410 Sport Evora NA For forum issues, please contact the Moderators. I will aim to respond to emails/PM's Mon-Fri 9-6 GMT. Link to comment Share on other sites More sharing options...
Mike6 Posted May 7, 2015 Author Report Share Posted May 7, 2015 Thanks Bibs and what a fast response. At least I know problems are not gearbox related. Quote Link to comment Share on other sites More sharing options...
cweeden Posted May 7, 2015 Report Share Posted May 7, 2015 That is expected behaviour as Bibs said. However if it was possible for you to turn both wheels at the same time while it is jacked up the engine would turn over, which is what you see when the car is on the ground. It's just the way open diffs work. cheers -Chris Quote Link to comment Share on other sites More sharing options...
ramjet Posted May 7, 2015 Report Share Posted May 7, 2015 You could possibly do what you are trying but you would need to anchor one wheel from turning and then turn the other one. As already stated, normal behaviour. Quote All we know is that when they stop making this, we will be properly, properly sad.Jeremy Clarkson on the Esprit. Opinions are like armpits. Everyone has them, some just stink more than others. For forum issues, please contact one of us Moderators. Link to comment Share on other sites More sharing options...
Gibbie Posted May 7, 2015 Report Share Posted May 7, 2015 Probably not your problem but if both back wheels are off the ground and you turn one with the intention of rotating the engine - the other wheel will spin unless you restrain it and the engine will not rotate. Just a thought?! Gibbie Quote Link to comment Share on other sites More sharing options...
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