scottybo Posted August 17, 2013 Share Posted August 17, 2013 just a bit of advice if i may refitted all the valves in my zetec head yesterday all the hydraulic tappets went back in fine with a very small amount of oil one them i threw a cam in while it was on the bench to spin slowly and make sure everything was ok. but some of the valves are opening further than the others, and some of them arent closing any ideas? btw its a 130 cam thats gone in, and just out of interest how far should the valves open? the ones that are good open up so they poke out further than the bottom of the head if that makes sense, so they would be sitting in the cylinder. is that the norm? any advice appreciated Link to comment Share on other sites More sharing options...
Stu Posted August 17, 2013 Share Posted August 17, 2013 It's a nonsense test. Just fit the head. Link to comment Share on other sites More sharing options...
scottybo Posted August 17, 2013 Author Share Posted August 17, 2013 just a bit of advice if i may refitted all the valves in my zetec head yesterday all the hydraulic tappets went back in fine with a very small amount of oil one themi threw a cam in while it was on the bench to spin slowly and make sure everything was ok. but some of the valves are opening further than the others, and some of them arent closing any ideas? btw its a 130 cam thats gone in, and just out of interest how far should the valves open? the ones that are good open up so they poke out further than the bottom of the head if that makes sense, so they would be sitting in the cylinder. is that the norm? any advice appreciated surely it wouldnt run like that Link to comment Share on other sites More sharing options...
scottybo Posted August 17, 2013 Author Share Posted August 17, 2013 nobody had anything like this before? Link to comment Share on other sites More sharing options...
blacksofstichill Posted August 17, 2013 Share Posted August 17, 2013 Some of the valves opening further than others will be down to the lifters not having oil pressure in them to maintain the valve clearance so some of the lifters will be pushing valves out less than others until there is oil pressure there. However, the valves which are not closing is something I'd personally want to check out before I fitted the head, that sounds like the tappets for those valves could do with being "squeezed back" so that they are not holding the valve out like that, does that make sense? Link to comment Share on other sites More sharing options...
scottybo Posted August 17, 2013 Author Share Posted August 17, 2013 no that makes perfect sense, how would you recommend resolving the issue? taking out the tappets and squeezing them all in? ive also got different sets of tappets, a set with a hole drilled in the side, and a set with a recess in the side, the drilled hole faces downwards which ones should i be using? i kept all the tappets from the scrap 1.6 head, but i cant remember for the life of me which came from which head current i have the recessed tappets fitted Link to comment Share on other sites More sharing options...
Stu Posted August 17, 2013 Share Posted August 17, 2013 This is why I said it was a nonsense test as you don't know the height of all the followers. I'd probably replace them with new, but that's just me. Link to comment Share on other sites More sharing options...
blacksofstichill Posted August 17, 2013 Share Posted August 17, 2013 I'm not sure which set of tappets would be the 1.8 ones and which would be the 1.6 ones, they're probably just 2 slightly different designs from different years so I would just say that as long as you have a complete set fitted it should be okay. If you remove all of the tappets again you should be able to squeeze them back in a vice, just be very careful not to damage them while doing that, use something like a bit of wood between the vice jaw and the tappet face and you should get on okay. If you get them all squeezed back then it should stop the valves from being held out and not closing. Let us know how you get on! Link to comment Share on other sites More sharing options...
scottybo Posted August 17, 2013 Author Share Posted August 17, 2013 right well i dont have the money to pay for 16 new tappets so im going to use the old ones how would anyone recommend compressing them? Link to comment Share on other sites More sharing options...
etrebus Posted August 17, 2013 Share Posted August 17, 2013 right well i dont have the money to pay for 16 new tappets so im going to use the old ones how would anyone recommend compressing them?as above in a vice and use a small socket but very slowly as you will crack them if you do it fast Link to comment Share on other sites More sharing options...
Craig855S Posted August 17, 2013 Share Posted August 17, 2013 have you relapped the valves and put new oil seals in? I would whilst its all apart to be honest Link to comment Share on other sites More sharing options...
scottybo Posted August 17, 2013 Author Share Posted August 17, 2013 have you relapped the valves and put new oil seals in? I would whilst its all apart to be honestCertainly have, spent about 3 hours lapping the valves.I'll try compressing the tappets and let you know. Link to comment Share on other sites More sharing options...
scottybo Posted August 27, 2013 Author Share Posted August 27, 2013 removed all the tappets, took all the valves out, oiled everything and put back in, no different what i did notice when trying to compress the tappets and squeeze all the oil out what that some of them are super springy and can be compressed with just your finger......and some of them are rock hard and don't move at all, even in a vice (i was extremely careful and stopped immediately after noticing that they weren't compressing anyone have any ideas????? Link to comment Share on other sites More sharing options...
Stu Posted August 27, 2013 Share Posted August 27, 2013 Give it to a cylinder head guy to sort. Link to comment Share on other sites More sharing options...
sidrick Posted August 27, 2013 Share Posted August 27, 2013 I think there's a chap on this forum who's reasonably adept and assembling cylinder heads Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now