jas-E 1 Posted June 14, 2007 Hey guys, Im in the middle of rebuilding my Mi16 engine, and took everything apart in the last couple of weeks. Just cleaned the bottom end and spray painting it now and getting bits to put it back together hopefully sometime next week. I am not removing my liners, and the first thing i did when i took the head apart was make flat washers which i bolted on top of the liners using the headbolts so that my liners dont move. My question is how much give do the liner seals have in them? Is it easily cracked? I washed the crank case in a degreaser tank so it was all over the place there, and i jet washed it after that so it moved quite abit there. Should i really be worried about cracking the seal or should it be ok? Thanks Jas Share this post Link to post Share on other sites
petert 586 Posted June 14, 2007 If you've gone to that much trouble you'd be foolish not to pull the liners out, check for corrosion, clean up the liner seat area and fit new seals. They're a large o-ring, approx. 1mm in cross section diameter. Share this post Link to post Share on other sites
jas-E 1 Posted June 14, 2007 hey Petert thanks for your reply. I was under the impression that the liners in the mi16 are either press fitted or glued on. Couldnt find any info on how they can be reassembled if i remove them. Is it just a matter of pulling them out, changing the seals and pushing them back into position? Is there like a groove they fit into so that i can be certain that they have sat into position properly? The last thing i want to do is put everything back together and have to open them all up again because the liner o ring did not sit in properly. Thanks for your help Regards Jas Share this post Link to post Share on other sites
Richie-Van-GTi 71 2 Cars Posted June 14, 2007 if its like the 8v seals they are just rubber O rings. Easy to swap over, plus I agree with peter, if youve stripped everything else why not just put new seals in anyway. Share this post Link to post Share on other sites
Mikey G 3 Posted June 14, 2007 Is there like a groove they fit into so that i can be certain that they have sat into position properly? The seal sits around the mating surface on the liner, and the block has a chamfered edge the seal sits against, once you take the liner out you will see how the o ring seats. Make sure you put the new seal on the liner all the way to the step and put a very small amount of grease on the ring to help it sit into place when you push the liner back down into the block. Share this post Link to post Share on other sites
jas-E 1 Posted June 14, 2007 Make sure you put the new seal on the liner all the way to the step and put a very small amount of grease on the ring to help it sit into place when you push the liner back down into the block. Do i need a press to push the liner back in or will tapping it gently be sufficient enough? Share this post Link to post Share on other sites
Mikey G 3 Posted June 14, 2007 It will go in easily, may need a little tap with a mallet to make sure it is seated down but thats it, then put the bolts and washers on so they will not move while you put the rest together. Share this post Link to post Share on other sites
jas-E 1 Posted June 14, 2007 ok mate. Will be working on that hopefully next week. Thanks for all your help guys. Share this post Link to post Share on other sites
Alan_M 66 1 Cars Posted June 16, 2007 When I changed my liners for new ones, I had loads of trouble getting them all lined up right. They have to be 0.003" above deck height I think, and all have to be within 0.001" of each other. Don't quote me on the numbers but it was a pain in the arse getting it all right! Share this post Link to post Share on other sites
Miles 331 1 Cars Posted June 16, 2007 And don;t forget to clean the mating surfaces for the 'O' ring to seat in, You may find corrsion on where the liner's seat which isn;t un-common Share this post Link to post Share on other sites
jas-E 1 Posted June 17, 2007 When I changed my liners for new ones, I had loads of trouble getting them all lined up right. They have to be 0.003" above deck height I think, and all have to be within 0.001" of each other. Erm..so how do you manage to get them so accurate. Thats one reason I did not want to touch the liners because im told that they need to be spot on otherwise im in trouble. Dont even think you can get that accuracy with a dti can you?? Looking that those numbers makes me still want to leave them in!! Share this post Link to post Share on other sites
Sandy 191 Posted June 17, 2007 (edited) The iron base of the liners often corrodes against the alloy seat, which affects the liner height at the deck. So scruffy seats can cause HG failure in a rebuilt engine. I strongly advise you take the liners out, refresh both the liner side and block side of the seats, so that you have perfect deck clearances, fit new seals and then pray. You can't do any more! Edited June 17, 2007 by sandy309 Share this post Link to post Share on other sites
jas-E 1 Posted June 17, 2007 I strongly advise you take the liners out, refresh both the liner side and block side of the seats, so that you have perfect deck clearances, fit new seals and then pray. You can't do any more! By refreshing do you mean just cleaning the old ones out, maybe wire brushing them, or did you mean get new liners? If i do keep the old ones will i get the perfect clearances once i have cleaned them up? Share this post Link to post Share on other sites
Mikey G 3 Posted June 17, 2007 Just clean the old ones with a fine wire brush. Keeping the old liners should mean the clearances will not change as they will reseat in the same place. Share this post Link to post Share on other sites
