| Author | Message | ||
     Randall Smith (Mr_smith) Member Username: Mr_smith Post Number: 170 Registered: 04-2003 |
Have 3 rover engines that were dyno tested for less than an hour. They were never installed on a truck, just dyno tested. When I examined the cam lifters I found that the plungers do not move up and down anymore on these otherwise new lifters(One set each of LR and Crane lifters). But when I test any new, in the box set of lifters, the plunger moves freely. Is there any way to drain the oil out the lifters so that they can be reused again?? | ||
| Peter Matusov (Pmatusov) Senior Member Username: Pmatusov Post Number: 1245 Registered: 09-2002 |
yes, you just have to wait. The lifters are designed to leak, so the oil gets circulated through them. You may either heat them up somewhat, or soak in ATF or diesel fuel. I don't quite understand why do you want to drain them, though. | ||
| Randall Smith (Mr_smith) Member Username: Mr_smith Post Number: 171 Registered: 04-2003 |
Peter That's just it, I'm not sure. Normally you just thow used lifters away. New lifters plunge freely and adjust to take up the slack when you start the engine. Most of these slightly used lifters are so solid you can't move the plunger, So how can they set up correctly again? I hate to throw things away. Maybe I should email Crane. Randall | ||
| Peter Matusov (Pmatusov) Senior Member Username: Pmatusov Post Number: 1247 Registered: 09-2002 |
The oil is kept in the bottom of the lifter by a check ball, so the only way for it out is along the bore walls. The clearances are tight, so it may take forever (which doesn't seem to be a problem on any of my trucks, with the yongest having 143kmi on the clock). If I don't forget, there are very high-quality drawings in ... 1969 Jeep Buick V8 TSM - I may scan a cut-out drawing of a lifter. It will tell you everything. | ||
| Randall Smith (Mr_smith) Member Username: Mr_smith Post Number: 172 Registered: 04-2003 |
I've got 142K on my RR engine too. Just invented a way to to clamp the lifter in the most advantageous way: it squeezes the oil out of that side hole and restores the original setting. So I just saved all three sets! | ||
| Peter Matusov (Pmatusov) Senior Member Username: Pmatusov Post Number: 1248 Registered: 09-2002 |
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| Ron L (Ronl) Member Username: Ronl Post Number: 247 Registered: 11-2002 |
Once you break in a cam and lifters, you should not remove the lifters from their original order, and they should not be re-used with a different cam. | ||
| Randall Smith (Mr_smith) Member Username: Mr_smith Post Number: 173 Registered: 04-2003 |
Yes, that's right. I put them in lifter organizer boxs so they don't get mixed up. | ||
| Peter Matusov (Pmatusov) Senior Member Username: Pmatusov Post Number: 1249 Registered: 09-2002 |
I don't think one can fully break in cam and lifters in about an hour on a dyno. OTOH... lifters are cheap! It just hurts to see more metal to go to trash. | ||
| Tbow (Tbow) Member Username: Tbow Post Number: 174 Registered: 12-2002 |
Hydraulic lifters are not designed to leak, they are designed to maintain oil pressure within the bore to take up the slack and maintain the high pressures needed to open and (dampen) close the valves. If they leaked, you would have the infamous lifter noise. There is really no reason to bleed them once they are pumped up, even if you decide to reuse them. Just mark them to the cam lobes and wrap them in plastic wrap with the oil and store them until your ready to reuse them. You don't want to reuse them with another cam because after the intital startup, they've already started to form themselves to the camshaft lobe. Finally, I wouldn't reuse the lifters you squeezed the oil out of, because you could have scored the bore or broke the check ball seal/seat. | ||
| Peter Matusov (Pmatusov) Senior Member Username: Pmatusov Post Number: 1251 Registered: 09-2002 |
They are, Tbow. Otherwise the same oil would stay in the lifters throughout the life of the engine, and it would cook solid in a few hundreds of hours. Also - short of banging a lifter with a sledgehammer, I cannot possibly see how one can break the ball and seat. The bore clearance is very tight, so the chances of any particulates entering it and scoring the bore are slim. | ||
| Randall Smith (Mr_smith) Member Username: Mr_smith Post Number: 175 Registered: 04-2003 |
I only squeezed enough oil out so that the preload canbe properly set up on reassembly. Most of the plungers were closer than 1mm to the retaining rings, so i had to do something. Someone is going to reuse these "new" lifters. Ex: Can't see the harm in installing them in an engine with 100k on it. Wonder how many times Crane has runa dyno test?? Will contact them them on how to handle parts after the test. Randall | ||
| Jeff Mclaird (Granitedisco) Member Username: Granitedisco Post Number: 141 Registered: 08-2003 |
On the subject of lifters - has anyone used solid lifters ? I know they are available for the engine - one of the mods that was done to the old TOCA rover vittese's - o.k. showing my age now | ||
| Peter Matusov (Pmatusov) Senior Member Username: Pmatusov Post Number: 1256 Registered: 09-2002 |
Jeff, it depends on the engine. I have never looked under the Rover's valve covers - in a '68 Buick 350, there is no valve lash adjustment whatsoever, so no solid lifters there, either. | ||
| Jeff Mclaird (Granitedisco) Member Username: Granitedisco Post Number: 143 Registered: 08-2003 |
Hi Peter - yes these are aftermarket solid lifters I'm thinking off - I think they were done by crane among others - there's a company in the UK (real steel ?) that specializes in the rover V8 that has them. Jeff | ||
| Randall Smith (Mr_smith) Member Username: Mr_smith Post Number: 176 Registered: 04-2003 |
Jeff It's been decades since i messed with solid lifters myself. They require frequent valve lash adjustments, which would require adjustable rocker arms, which would probably require a larger valve cover and maybe a different oiling system too. You could find out more at www.aluminumv8.com | ||
| Jeff Mclaird (Granitedisco) Member Username: Granitedisco Post Number: 145 Registered: 08-2003 |
Thanks Randall - just wondering about longevity - hydraulic versus solid lifter - which lasts longer - given all engines are diffent etc. Jeff | ||
| thom mathie (Muskyman) Senior Member Username: Muskyman Post Number: 556 Registered: 11-2002 |
lifters are like condoms....single use items. transfer from one lobe to another is not a good idea. |
