Machine shop estimate?

[DETurbine]

Well it is about that time to tare my motor out of my car (have an RB25DET (Inline 6 clyinder)) and start disassembling it. Last summer I lost compression by leaning it out a little to much and a few other issues that caused it to give out. Did a compression check on it and it was as followed (starting at cyl.1 down the line to #6): 110,110,111,110,110, 25. There is oil inside the intake, intercooler, piping, and down the intake manifold into the head. I am thinking that it is either the rings or lands, probably most likely the lands, I am ready to finally tare it out of the car (got the wiring, turbo, intake manifold, and hoses off), just need to take off the tranny mount and cross member and it is out. I will then disassemble it and see what happened. Any other way I am thinking that I am going to have to get new pistons, so I am going to order up some 87mm Wiseco's here pretty soon. Is there anyone that has taken there motor to a machine shop of have any friends that have?

I am trying to get a ruff price together to see how much it is going to cost me.

 

Here is what I need to have them do:

 

1. Mill the head (which I need them to disassemble the head to get the valves out).($60/hour)

2. Bore the block (I will disassemble the block myself).($180 is their price to bore out a 6cyl.)

3. Assemble the block back together with forged pistons. ($60/hour)

4. Check the clearance of everything on the block (pistons, bearings, etc...).($60/hour)

5. Put together the head ($60/hour)

6. Check the clearance of the valves. ($60/hour)

 

I just wanted to get a ruff estimate on what the following 6 jobs will cost me. I am not sure on how long it will take them to do all those and that is why I am asking you guys, because they are not even sure.

 

Thanks,

Zach

[Guest MCTomTom]

I just had my L28 rebuilt last summer at an engine and machine shop, and my total cost was about $900. (also the owner is a family friend) That counted valve job, head resurfacing, (AKA milling), bored .40 over, new rods, pistons, valve seats, delta cam, and all of the gaskets. If you aren't planning on doing any valve stuff(if it isn't needed) you shouldn't have to dissassemble the head to mill it down. But it would be a good idea to reseat your valves, and check the guides, and seals also. while the motor and head are out of the car. But it isn't cheap. I am sure glad I had it done though. It almost sounds like one of your valve seals exploded and oil from the valve train leaked into the combustion chamber and into the intake. Or what most likely happened because you lost compression is one of your rings went out and oil from the crank area got sucked up by the piston.

Also, are you doing cams or any other valvetrain upgrades? And last but not least, ask about honing, and if it is included with the bore job. I know a guy who got screwed over for having to pay a machine shop more because they made him pay for honing seperately, usually it is included. But make sure you get those cylinders honed.

MCTT