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Welcome to the forum. Need more info, such as cams installed, head gasket used, what is the dome measurement or part number of the pistons, bore size.
Unless original tune was close, 1000mi is a long way to go before tuning. Much less 1300.
:wtfI have put in a fueling oil pump, S&S cams, S&S 89 cc Performance heads, and Keith Black 10.6/1 domed pistons. This is in a 2005 Dyna Twin Cam 88. My mechanic asked me to do 1000 mile break in b4 we remap the motor, so I put on about 1300 miles below 3500 rpm. During that time I used just a little better than 2.5 quarts of oil. My mechanic and I did compression test and what he called a leak down test. The leak down wasn't a true leak down, just waiting a while to see if the compression bled off. The compression readings were 160 on the front cylinder and 170 on the rear cylinder. My mechanic, whom I trust, felt these were great readings and, initially, so did I. I have since been presented with the information that, with the equipment we installed, we should have readings more in the 200 and above range.Any thoughts or comments from some of you experienced builders out there? Where do you feel my compression readings should be and where did that much oil go?:
I agree up to a point. The can leak ok and still have oil control problems. Carry over usually is there in these cases
All straight now. Thanks Robin.And that said fitting stock bore pistons in used holes is marginal at best.Putting new pistons in a used bore without going oversized is usually a failure. Guys ball hone them. The bores usually are not worn much but they are not straight and true. To get them straight and true in a fixed hone will result is a loose fit and that has issues as well. Best fix is to go up to 95" especially with those heads. Now mill the heads and use a .030 HG to get the compression up a little.