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Old 12-27-2007, 10:44 AM
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machining costs

how much roughly has is cost you to bore .030 over? and what did you have done (cam bearings, freeze plugs, decking, magnaflug, hot tank etc.)

a machine shop near me wanted a $300 deposit, i think thats high, thats only for a .030 over and freeze plugs

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Old 12-27-2007, 11:11 AM
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I had a 350 done this summer it wasn't bored, only honed, freeze plugs and cam bearings installed, hot tank, and a valve job and he shimmed the springs back up to proper height for $375.00. This was just a average automotive machine shop that isnt geared toward racing engines, but if they guy you are talking to mainly does race stuff then he will probably be higher. Sometimes cost isn't the only thing you should be concerned with. Check their reputation.
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Old 12-27-2007, 01:01 PM
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Well, if he's the only guy around he's probably going to be higher.

What is the shop's reputation?
How is the quality of the shop's work?

Different areas of the country have different rates for the same services. Quality usually cost's more but is no measure of accuracy or quality.

Suppose a shop invests in newer machines/tools for better quality, service, and/or capabilities, would you pay $150 more for top quality, spot on work? A good deal is nice to run across these days, but saving a few $$$ and forsaking quality will get you nowhere. Most machine shops that stay in business do so because of their work. Check around. Ask for references. Talk to the machinist and don't base your relationship soley on a dollar.

JMHO
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Old 12-27-2007, 02:34 PM
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It depends what your looking for if your building a bone stock engine or are you building a performance engine as there is a big differance between a shop that just builds stock engines compared to one that builds performance engines.

We build performance engines and we do all performance machine work,

If a block is sent to our shop its sonic tested then cleaned and magged then its line honed with a new ARP main bolts, its decked, bored and plate honed and the lifter bores are lightly honed and we charge 595.00 for that work.

Most local shops can't sonic test, line hone, square and deck and plate hone and most have substandard hones for performance honing.

We get blocks in the shop that guy have had them bored and honed and set the crank in and torque up the mains and the crank binds up cause it was not line honed or the engine has a lot of blowby because it was not plate honed.

But you get what you pay for as your not going to get a top of the line job for 300 dollars.

Here is a link to blue printing a block granted your cam tunnel would not have to be done as we only do this on the engines we build in our engine shop.
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Old 12-27-2007, 02:38 PM
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$300 is about half of what I paid to have my block done last year. That was just the block no head work and I supplied the cam bearings and ARP studs.
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Old 12-27-2007, 02:44 PM
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Thermal cleaned, mag checked, torque plate bored and honed, cam bearings and brass core plugs installed, around 325 bucks. Align-bore, add 145 bucks.

tom
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Old 12-27-2007, 02:46 PM
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Quote:
Originally Posted by machine shop tom
Thermal cleaned, mag checked, torque plate bored and honed, cam bearings and brass core plugs installed, around 325 bucks. Align-bore, add 145 bucks.

tom

What about square decking the block? How much for that?
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Old 12-27-2007, 03:04 PM
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Quote:
Originally Posted by RPM
What about square decking the block? How much for that?
square decking 160 bucks stand-alone, with other machine work, 140.

tom
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Old 12-27-2007, 03:06 PM
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(Putting on official moderator's hat)

I want make it clear here that CNC and I are not advertising here for business. These are just examples to give the dan and others an idea of what machining costs are.


tom

(Taking official moderator's hat off. I hate hats.)
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Old 12-27-2007, 03:12 PM
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Quote:
Originally Posted by machine shop tom
Thermal cleaned, mag checked, torque plate bored and honed, cam bearings and brass core plugs installed, around 325 bucks. Align-bore, add 145 bucks.

tom

Tom
What about line honing as that is preferred on performance engines as we only line bore when changing caps or installing new ones.

Boring off an an unsquared deck in not acceptable on a performance job as we have had to try to straighten out some of the messes that have ended up in our shop and in some cases we have had to replace the block.

If everything is done right the first time there should not be any problems down the road from what we have seen.
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Old 12-27-2007, 03:14 PM
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Quote:
Originally Posted by machine shop tom
(Putting on official moderator's hat)

I want make it clear here that CNC and I are not advertising here for business. These are just examples to give the dan and others an idea of what machining costs are.


tom

(Taking official moderator's hat off. I hate hats.)
Never thought of that Tom good point here

Thanks Carl
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Old 12-27-2007, 03:16 PM
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I don't do align boring or honing in-house. I have had better results with having my blocks align-bored as opposed to being align-honed. The place where I send the blocks to be align-bored always does a perfect job. Where I was sending the blocks to be align-honed, not so perfect. Not even close.

tom
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Old 12-27-2007, 03:21 PM
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the dan,
I had a 400 cleaned/inspected, torque plate bored & honed, main studs installed and mains line honed, crank ground for dual keyways, and the block was 0 decked and a few other minor things done for just under $1100.
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Old 12-27-2007, 03:24 PM
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This is a good thread. It has been 20 years since I worked in a engine machine shop. Exactly what procedure do you guys go thru in machining a block from start to finish. That is a block comes in. Clean it first then flux it. Align hone. Then deck. Then bore and hone with plates. That's about how we used to do it. Do you still do that or is there a better way now?
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Old 12-27-2007, 03:29 PM
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Quote:
Originally Posted by RPM
This is a good thread. It has been 20 years since I worked in a engine machine shop. Exactly what procedure do you guys go thru in machining a block from start to finish. That is a block comes in. Clean it first then flux it. Align hone. Then deck. Then bore and hone with plates. That's about how we used to do it. Do you still do that or is there a better way now?
You got it. Although the first step SHOULD be "get a deposit".

tom
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