Author Topic: Upgrade kir for GX390 on eBay  (Read 539 times)

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Offline nolids

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Upgrade kir for GX390 on eBay
« on: July 26, 2018, 05:39:04 PM »
I recently lost oil pressure on my 2001 GXV390 and seized the piston.  I was looking at eBay and they are selling a 16hp upgrade kit for the GX390 that includes the 90mm piston and (I believe) the 66mm stroker crank.  I have figured out the piston and rod will work after grinding off the splash tang, but my question is can the stroker crank work in my GXV engine?  Or are they not able to accept the extra gear and bearing the GXV needs?  Are the GX cranks shorter or something that keeps them from being used in a GXV390 engine?
Geoff



Offline nolids

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Re: Upgrade kir for GX390 on eBay
« Reply #1 on: July 26, 2018, 05:54:48 PM »
Forgot to mention that I will bore the GXV block for the 90mm piston.  The stroker crank is my important question.

Offline nolids

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Re: Upgrade kir for GX390 on eBay
« Reply #2 on: July 30, 2018, 08:20:27 AM »
Okay, I did my research and found out that the GX390 crankshaft is 3/16" longer than the GXV390 crankshaft.  Not enough to make a difference.


 

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