Martin Posted March 18, 2015 Share Posted March 18, 2015 Can anyone tell me if the crankshaft auxiliary pulley stud is a left hand thread as i am really struggling to get this out. If it makes any difference this is a vauxhall 1600 8 valve engine...thanks Martin Link to comment Share on other sites More sharing options...
ECR Posted March 19, 2015 Share Posted March 19, 2015 Are you talking about the crank pulley bolt (the big bugger in the centre of the pulley) ? If so, it will be a normal r/h thread. It will be very tight and you will need to lock the crank and probably use some tube slipped over the normal length tooling used.Good luck Link to comment Share on other sites More sharing options...
shn7 Posted March 19, 2015 Share Posted March 19, 2015 Confession time. I once loosened said bolt on a K series inadvertently.Car wouldn't start and for some reason I forget I'd used a socket and ratchet handle to turn the engine over by hand. Forgetting I'd left this on the bolt I then hit the starter button!!!!!!Nothing nasty happened thankfully, no loud noises etc. But as the handle was resting on the cruciform it worked perfectly to loosen the bolt.Should you consider this option please ensure you disable the engine from firing or you WILL regret it and only hit the starter button very briefly. Link to comment Share on other sites More sharing options...
Martin Posted March 19, 2015 Author Share Posted March 19, 2015 Thanks for the replies and with a little perseverance i have managed to loosen the big bolt in the middle of the crank pulley. ..i now just waiting for the new cam belt to arrive before i remove the old one...thankyou for your responses..Martin Link to comment Share on other sites More sharing options...
Bob Simon Posted March 20, 2015 Share Posted March 20, 2015 Martin,The VX crank pulley fastener is a stretch bolt. A one-use, disposable item.Get a new one from a GM dealer when you go back together. They're only a couple of quid. Link to comment Share on other sites More sharing options...
Martin Posted March 21, 2015 Author Share Posted March 21, 2015 Thanks for that bob, i did ask redline what i needed to replace when changing the cambelt, i was thinking water pump, automatic tensioner and crankshaft pulley bolt but they said should be okay just changing the belt. Its never been changed before, 20000 miles and 14 years old but you got me thinking now. Think i might go and get a bolt, it looks ok but so does the belt. .have you got vauxhall 1600 8 valve, i new to being caterham owner and any advice would be very much appreciated...Cheers Martin Link to comment Share on other sites More sharing options...
Bob Simon Posted March 23, 2015 Share Posted March 23, 2015 Martin,Sorry, I can't really be of much more help. I have a C20XE. I've never had an Astra engine apart. Link to comment Share on other sites More sharing options...
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