Curious if you can do a top end rebuild (Axys) with the engine in the sled?
Can you do a top end on an Axys with the engine in the sled?
- Thread starter Hill Topper
- Start date
Absolutely, yes. Did 2 of them for a friend a couple of months ago.
yes i just did one yesterday ,it had a turbo also and had plenty of room
Nice!!!!! Appreciate your response's
What gaskets do I need besides the base gasket?
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not to hi jack here but at what mileage are you replacing the pistons?
thanks
thanks
When the motor fails a leak down test or low compression.
Did you guys do anything with cylinders or just pistons and rings?
i did wrist pin bearings on mine , there only $24 each
Since the cylinders are nykasil coated, you don't need to do much with them, as long as the original hone scratches are visible (and they should be) and you can't feel any scratches with a fingernail. Just scotch brite the carbon off the top so that your new rings don't collide with it, hot soapy water after that, and measure to make certain bore is still in spec. Assemble with lots of oil. New wrist pin bearings are a good idea, but not totally necessary.
Any nick in the cylinder and you should send it out to an expert that deals with nykasil. Ball honing is a bad idea. In a pinch, you can polish out a tiny cylinder nick on a dual ring and run it without issue. Not ideal, but it'll run.
In response to another question, the 2 engines that I did this season had 5,500 and 4,500 miles on them. My sled will have 3,500 miles on it after next week and will put pistons in it then or sell it. I've replaced pistons at 2,000 miles but pistons always looked good then. The pistons I did this year were quite sloppy. I'd say 3k miles is ideal, unless you're really hard on things.
That is also my plan. I was just seeing what everyone else was doing. If mine look good and the pistons look pretty smooth probably just new pistons and rings gaskets and put back together. If there is much scuffing on the pistons, I may do the Indy Dan HG7 hone cylinders.
