rebuilt and now there is a nock?

[sly240]

I rebuilt my Red Top Sr20det. Now I just started it up today and it has a nock. My Question is what does anyone think it could be? Some common problems that people have seen after a rebuild would be nice. I will be looking at it this weekend but I just wanted some ideas of what it might be.

So some background I installed new rods, pistons, bearings, valves, valve springs, new turbo, and almost everything else as far as internals go.

As for the nock, the weird thing about it is it is intermittent. it comes and goes and for the short time I had it running it didn't seam to have any relationship to throttle response or anything like that. It doesn't really sound like a lifter to me but that is the first place I will check.

Anything that anyone can suggest would be greatly appreciated. Thanks.

[compactfean]

A knock could be 20 different things, you have video?

[sly240]

No i dont have a video. I relize there is a ton of stuff it could be. i just was wanting some ideas of things people have seen after a rebuild. Any mistakes that youhave seen made would be of great help.

[compactfean]

Thrust washers, oil pump not primed, lifters not primed. Lifters are an easy fix, anything else your looking at some repair work from the gate.

[sly240]

Thanks for the info. The thrust washers were installed and oil pump was primed. i was thinking (hopeing) it was the lifeters but with it being intermentant it dosent seam like a good fit to me.

[sly240]

Ok so i started it today and no nock. I let it run for awhile and drove it around the block and still no nock. Any way just wanted to say thanks for the help. And i hope it stays gone and dosent bite me in the a**.

[S13_RB25]

Lol I'm not a sr expert or a sr owner but I've seen a KA a knock, right after a fresh rebuild, and it was caused by the rod caps being on backwards. Just check and make sure plus you'll get a look at the walls and everything too...