| Author | Message | ||
     Kris Carlquist (Kris_carlquist) New Member Username: Kris_carlquist Post Number: 12 Registered: 09-2003 |
So my Disco has started to use an inordinate amount of oil, I have not done a leak down yet, but I suspect the rings are the culprit. The local dealer says the block cannot be bored because the sleeves will rotate. Is this true, has anyone had a block bored and had this problem? The local machine shop says they have done plenty of them and not had a problem. Even if the sleeve does rotate, doesn't the head seal against the top of the sleeve? In a diesel it is important that the sleeves be sealed well and aligned properly for crank clearance, I can't imagine that a gas engine would be different. I just don't want to go through the trouble of an overhaul and then have to pull it becase of a problem with the machine work. I have already compared prices and I can do the complete overhaul for less than the cost of the Bosch block and the necessary parts to put it together. It seems to be worth it if the block can be bored. | ||
| Kris Carlquist (Kris_carlquist) New Member Username: Kris_carlquist Post Number: 13 Registered: 09-2003 |
Come on, somebody has to know this. The bore job is only $90 as opposed to the cost of the new block. I looked at some pictures of the blocks in AB, and it looks like the heads might seal against the block, not the cylinder sleeve. Someone has to have looked into the overhaul vs. new at some point. | ||
| J E Robison Service Co (Robisonservice) Member Username: Robisonservice Post Number: 158 Registered: 10-2002 |
Honing is $90. Boring is more, at least around here. We used to bore LR motors oversize but now we buy the Bosch 4.0 blocks brand new from Rover for less than the cost of crank work, boring, new pistons, and rod rebuilding. And we have a new motor, not a fixed old one. At this time, boring is not a cost effective option if done properly as part of a full overhaul but you can do it. | ||
| Kris Carlquist (Kris_carlquist) New Member Username: Kris_carlquist Post Number: 14 Registered: 09-2003 |
I actually got a quote from a local machine shop, and I did question him about that cost. I too thought it was low, in the past I have paid more. He assured me that was the cost of a bore job. What are you paying for the Bosch blocks? The local dealer wants $1500 for the Bosch, I am assuming this is for the short block. | ||
| J E Robison Service Co (Robisonservice) Member Username: Robisonservice Post Number: 159 Registered: 10-2002 |
We pay about $1300 for the blocks. I think you will find new pistons and bearings and the machine work if you do the crank will be more. | ||
| Brian (Bthaxton) Member Username: Bthaxton Post Number: 75 Registered: 02-2003 |
Are you guys talking about the entire 4.0 (D1) short block assembly? I mean crank, rods, pistons, complete? I was wondering what one might cost if I ever need it. My '97 D1 has 110K miles. | ||
| Brian (Bthaxton) Member Username: Bthaxton Post Number: 76 Registered: 02-2003 |
Also, I might add, I would tend to agree with RobisonService. In my younger and dumber days, around the age of 17, I jerked the Chevy 305 out of my car (that my Dad just bought me) and had the bright idea of rebuilding it. I learned that good machine work requires two things from a machine shop: 1. Skill 2. Time Put both of these together and they equal $$$$$. Short blocks are built pretty much by automation, so less $$$$$. | ||
| Kris Carlquist (Kris_carlquist) New Member Username: Kris_carlquist Post Number: 15 Registered: 09-2003 |
I have rebuilt a number of engines over the years. I am well aware of what is required. I do most of the labor myself (outside of machine work), so it really is a savings most of the time. Plus you have to watch a lot of the short blocks out there, be sure you are buying new, not a reman (I realize in this case the Bosch blocks are new). I have seen things as bad as a heli-coil in a main cap before. As far as I am concerned, this is exceptoinally bad. It may be that the short block is the better option, but it doesn't hurt to check on the rebuild option. Properly done, a rebuild is every bit as good as a new short block. Like I said, I was a bit surprised by their prices. They seemed a little low, I may not have been getting the full story. I may go with the short block. Right now I am just monitoring the situation to see if it is as bad as first look indicated. As far as a something being better because it is machine assembled, I have to say BULL to that. If that were true, why doesn't Ferrari have a factory full of machines, instead of a bunch of Italian guys who really like to build cars. I work in a very automated plant, and I can tell you, a product built by a machine is no better than hand made. Men still have to maintain those machines. Machines do produce more consitency, but that can be constistent good or consistent bad, depending on the people maintaining and operating those machines. In short, done by hand with care, better than some stupid robot that doesn't know if he is doing something wrong. Or even worse, some guy in a factory, who really doesn't care if the machine is operating properly or not, pushing a button on a machine. Machine built or hand built, the people doing it or maintaining/operating the machines have to care. It has been my experience that most automotive machinists take pride in their work. | ||
| Kris Carlquist (Kris_carlquist) New Member Username: Kris_carlquist Post Number: 16 Registered: 09-2003 |
I have rebuilt a number of engines over the years. I am well aware of what is required. I do most of the labor myself (outside of machine work), so it really is a savings most of the time. Plus you have to watch a lot of the short blocks out there, be sure you are buying new, not a reman (I realize in this case the Bosch blocks are new). I have seen things as bad as a heli-coil in a main cap before. As far as I am concerned, this is exceptoinally bad. It may be that the short block is the better option, but it doesn't hurt to check on the rebuild option. Properly done, a rebuild is every bit as good as a new short block. Like I said, I was a bit surprised by their prices. They seemed a little low, I may not have been getting the full story. I may go with the short block. Right now I am just monitoring the situation to see if it is as bad as first look indicated. |
