guys is it possible to identify a wear pattern on lifter and lobe if viewed with a hi-power microscope? To match each lifter to it's lobe? Thanks!
Looking for problems. Those lifter are worn to those specific lobe.Save the trouble and replace them with new.Old design had leakdown problem. If you buy a set from auto store,tear one apart aand if it has a flat washer thingy sandwiched between two parts take them back because those are the ones that are trouble.Get the new design that TA now has to offer. You can run a chevy lifter put your going to have to have adjustable pushrod to make them work.
I thought if you put new lifters on an already-broken-in cam, you didn't need to do a real break-in again? If I put in new lifters (just got some new ones from TA!), do I have to break in for 30 minutes again??? -Bob Cunningham bobc@gnttype.org
Alright, I hate to be an alarmist here. I mixed up a few lifters when I was taking my engine apart, so I ordered some new lifters from TA. I just spoke to my machine shop, and whenever they have to replace a lifter (or set), they replace the cam too. When they replace either one, they automatically replace the other. Now I'm pretty sure that in the past, I've replaced lifters on an existing cam- was I just lucky? Or is my machine shop over-cautious? Am I gonna wipe my cam and fill the motor full of metal? -Bob Cunningham bobc@gnttype.org
Just today recieved my new lifters from TA.They wouldn't take back the other because they said the manufacter was having issues about taking them back. I'm going to strip the 2 types apart and take pics of the differences. I will post this up in the Bench so people can see the different designs between the two.
Bob, I've replaced lifters on an already broken in cam before. I'm sure there's no problem in doing so.
Just had my brother install new lifters on an old cam this afternoon .It appears the cam survived the ordeal.The cam is a Lunati Hemi-Killer and a couple of the original Lunati lifters went bad after installing my Stage 2 heads.(also had 3 adjusters go bad in a set of KB roller rockers after installing the new lifters).Things never go easily.In any case take some precautions when putting in new lifters,especially so if you are not going to the trouble of break-in on just the outer springs.At minimum break any edges down on the lifters with 600 grit paper-perhaps over a glass surface.Don't go so far to remove any convex shape on the lifter face.Lube the cam up well with the break-in goop,stick EOS in the crankcase and put in at least an extra quart(litre) of oil in the crankcase.Run the motor at 1800 to 2000 rpm for 15 to 20 minutes.Change the oil and filter and perhaps use EOS until the next oil change.I put in a set of Crane Chevy lifters and so far so good.I have had just about everything go wrong that can go wrong but hopefully this time all will work out.Buicks challenge your patience.Hope this helps.Rod
Hi, the cam is probably 6 years old in my car and has had 3 different kinds of lifters on it and is still going. Tom
Well I know and they know that they are junk for a hi-lift cam.I also have bought many parts and spent alot of money on TA parts.I have no grief so far from them so I'm still happy.The first set cost me 80 and now this set another 80 but as long as I have confidence that these new ones won't give me trouble I won't say nothing. I had ask if they would take the cam back that I bought along with the old lifters and there wasn't a issue with that. I guess I'll put them on the board for sale for 40. and shipping.I think they will be OK for a stock motor/cam. NOW if they were dealing with the wife that would be a whole other story. JUST don't get HER going.
I did the same Dave Bought another set of the "NEW" lifters to replace the other flat design. I will be HAPPY as long as I don't have any problems.:Smarty:
