Compression build up
 

How long does it take for a rebuilt 13b to build compression. I heard its normal for a rebuild to have lower compression, but mine won't start with out being pulled. Once it's on it runs good but I'm wonder if I have a bad build I can almost never get it to start by turning the starter.

what car?

have you confirmed where the timing is while it's running? another idea is to do a compression test after it's run and warm.

Did you test the engine to see what the actual compression is?
Normally it takes a couple 100km's to get everything properly settled.
Your compression numbers will come up as everything wears to where it should be,but it won't be a drastic change in Numbers..like if you start off with 50 and think that the numbers will end up as 110 then there is something askew.
BTW..50 is just a number for reference.If you rebuilt and tested at 50 then you would not have rebuilt the engine correctly and would need to address it

Timings good compression is 60 not much better than 50. I'm pretty upset. I was told this is all normal with these cars.

i've had a few go 20-50 miles before starting on their own, most start right away.

that is not that good, it may run, but I bet it doesn't have much power. even after a fresh rebuild you should have at least 100 psi

you could keep driving it and see what happens, but I wouldn't have very high hopes

what new parts went into your rebuild?

New side seals and springs. Apex seals and springs. Corners seals. Thermal pellet and new seals.

Compression build up
 

how were the housings is the next question?

I replaced one housing and rotor the other looked like it was in good condition.