How tight to twist?

[One Oldman]

How tight are we 'successfully' twisting our stock or mildly modded 3.0 EFIs without the limiter and for how long?

[One Oldman]

No one running these past the limiter???

[XstreamVking]

Even the raised limiter ones are staying around 6500 I believe. They are not the spinners the little motors are.

[RSWORDS]

Where does the stock limiter come in? Carb and efi the same?

[One Oldman]

From what I understand, the stock limiter does not have a noticeable affect until around 6,300 regardless of what the decal says. I think the 300 PMs are at 6450 but if it only becomes noticeable at 3 or 400 RPM later, I don't know. I know they they all go pig rich a little under 6K but it doesn't usually pull them down much until the timing starts retarding. The XBs had lower limiters because it was a consumer motor with full warranty. The PMs were sold by the racing division and only had 1 year warranty. There is some thought that the higher limiter and the 2 degrees of more advance caused a higher failure rate of the PMs. Then again failure rates could just be from application also, since the XBs were mostly bass boat motors. What info I have is just what I have been able to find and though I think it's correct, it might not be.

[One Oldman]

Even the raised limiter ones are staying around 6500 I believe. They are not the spinners the little motors are.

Thanks for the input. Yea I know they are not 8 and 9k motors. I am just trying to get an idea of how much the rotating assembly will take and still be likely to run another day.