Quote:
Originally Posted by hurryinhoosier62
Most of the Chinese cast cranks are JUNK. This isn’t an opinion; it is FACT. I’ve seen too many NEW off shore cranks that had so much taper and O/R that we were grinding them .030 under just to get them in spec Want to talk about the ones that were .040 out of stroke? The BRAND NEW we had to scrap because of this? Even using a .005 above stroke/.005 below stroke criteria we couldn’t correct this much out of stroke AND use .030 under bearings. My old friend and mentor had an expression he used a lot: “New doesn’t mean good”. Just because a part is “new” doesn’t mean it isn’t junk. OE Pontiac cranks should be subjected to NDT ( Non Destructive Testing) before reusing them. As Mike has said many times they were producing nearly 1,000hp in Grocery Getter with an OE Pontiac crank. A properly prepared and machined Pontiac engine OE crank is capable of handling 600hp on the street. If you are concerned about longevity, cryo treat then nitride the crank after re-grinding and equalizing the strokes along with regrinding the radii on all journals.
|
Yup, I bought a early IA Eagle cast stroker. Not only was the stoke off on this stroker, it was bent .004 and had .001 tapper on the journals. Not to mention severely rough thrust surface.
Whitmore had to send it to his crank guy. Now I gots me one of those 1200$ cast China cranks you can not trust or give away. So I gave it to my brother and implore him not to run it all the time.
He seems set on running it. Should be fine but.............