Left engine block with pistons and rods at machine shop - Page 3 - Miata Turbo Forum - Boost cars, acquire cats.

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Old 09-07-2010, 07:14 PM   #41
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This thing has me running the worst migrane.

Straight from the horse's mouth, from the guy who assembled the block, his name is Jason. He told me the crankshaft comes balanced from factory with the rods and pistons that came with it. That each and everytime you change any part of the equation, everything must be rebalanced.

Why they didnt do it? He does not know. He only gets paid for engine assembly. It seems he knows his shyt and a very cool guy. He mentioned he gives more gap when running boosted applications. Weird as it may seem, he stated cast pistons expand more than forged and the tolerances he measured met the ones by the spreadsheet submitted by Supertech. He told me not to stress it out, assemble everything and he also gave me his word the engine was not going to give me a problem, and from his eyes the engine seems meeting all safe clearances. He prefers to measure clearance from the bottom of the piston sleeve, compared than from the center as specified by SuperTech.

So this is the breakdown:

Clean block: 50.00
Labor Mag Block: 25.00
Block boring: 80.00 (4 x20.00)
Labor press piston: 20.00
Polish Crank: 35.00
Balancing engine block: 150.00
Block Assembly: 225.00
bearings: 70.00
Freeze plugs: 10.00

So now I have to take the engine to another machine shop for balancing, so the 225.00 of engine assembly was a waste of money. At the end of the day, the engine has to be taken apart again. If he would have told me the engine block wasn't going to be balanced, I would have stopped right away.

I made the error of paying by credit card part of the work, 411.55 and other 300 paid it in cash. I told him to give me the 150.00 in cash as then later I will open a claim with CC and recup as much as I can, but he is smart and wants to put it back on the CC, not cash.

The owner, Luis, even asked me to bring the cylinder head to measure clearances between the valves and engine block for a complete engine build as if I dont know these engines are non-interference engines.

I was trying to push this project forward, but for now let me put all my thoughts together, contact AExpress and see how much I can recuperate, and if last resort take them to a small claims court.
And as if all that I am going thru is not enough, the invoice says, vehicle: Jeep 4.0!

Last edited by mazpr; 09-07-2010 at 07:21 PM. Reason: Its cool to have a warning!
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Old 09-10-2010, 06:49 AM   #42
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Originally Posted by mazpr View Post
he stated cast pistons expand more than forged
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Old 09-10-2010, 02:25 PM   #43
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wtf how do you guys get these prices!

I hate california

i paid OVER $600 for JUST block machining and nothing else
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Old 09-10-2010, 05:21 PM   #44
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Originally Posted by railz View Post
wtf how do you guys get these prices!

I hate california

i paid OVER $600 for JUST block machining and nothing else


I just had a $1200 bill from the machine shop for my 331.

Included all the work on the block, new pistons, rods, rings bearings .... and everything balanced and longblock assembled. (They had just done a port job on my heads)

I was thinking about buying a spare 1.6 longblock and having them throw some pistons and rods in and freshen it up for when mine finally lets lose at the track.
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Old 09-10-2010, 11:40 PM   #45
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Reading this thread makes me happy that I just dropped my block off with Ocean @ Chikara. I know it will be done right.
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