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Rb25 machining costs?

Desean Strickland
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Desean Strickland Explorer

Desean Strickland

Posted
Posted

Hey guys 

For people with a built rb25, how much did u pay for the machine shop side of things like balancing and prepping crank, testing and resurfacing the block, cylinders bored out piston and bearing clearence measured etc. I’m assembling the engine myself and using my local machine shop but just wana make sure I’m not getting ripped off, Not parts cost just the actual service.

Cheers 

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CowsWithGuns Enthusiast

CowsWithGuns

Posted
Posted (edited)

image.thumb.png.e1ac0aefb2a519e901de29225987881e.png

image.thumb.png.6b3846884a1ad4edb5b093cb1d45669d.png

 

Occurred in 2021. f**kers raised the price substantially over the quote on the phone, and tried to force in extra work I explicitly didn't want. YMMV. But theres a reference for ya.

 

Didn't get it balanced and didn't need line boring.

Should have got it balanced (get it balanced).

Edited by CowsWithGuns
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The Bogan Grand Master

The Bogan

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Posted

I would look at getting the block checked for cracks and stuff before any machine work

It seems there's a tendency for the block to show some cracks around where the head studs go

There's a few threads about the cracks on this site

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Murray_Calavera Mentor

Murray_Calavera

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Posted

I wonder how many people have had their block crack tested, found tiny cracks between the head stud holes and water galleries that are only visible with crack testing, then went on to use the block anyway. 

The engine I'm slowly building, the block came back from crack testing with a couple of those cracks identified... the machinist told me those cracks were very common and not to worry about it. And if it was his block, he'd still use it. 

I'd feel a lot better about it if a bunch of people here have used similarly cracked blocks without issues (say up to 450kw ish without issue). 

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