safe boost on a log motor?

[93sundance]

My buddy and I are thinking about running more boost on a stock 85 charger w/ the log motor. Is it safe to run 14 psi with all stock parts ( assuming the fuel system is working properly)? If not, what is the highest boost we should go with stock parts?

[93sundance]

I just did a little research, and I am thinking no more than 12 psi to be safe.
What do you guys think?

[MiniMopar]

I ran 12psi on my Daytona when it was 86 T1. I'd hit shutdown above that. I always put 93 octane in it, though, as it would ping on really hot days on 87. I ran 14psi on my 88 T1 Shadow all year long on 87 octane, but I had a Conquest IC on it.

[contraption22]

I just did a little research, and I am thinking no more than 12 psi to be safe.
What do you guys think?

I've run as high as 14psi, on 93 octane and 803 injectors.
I've run as high as 18psi on race gas with alky injection.

[Keito]

http://www.turbododge.com/forums/f1/...rd-t1-log.html

[devlish]

i used to run 14psi on mine. until the 2nd headgasket blew.

[moparzrule]

The log motors can handle a lot of boost. I had an 87 T1 daytona. I squished the fuel pressure regulator in a vise to up fuel pressure to 62 PSI static. I had a mopar performance ECU so I could use a 4.7V zener diode on the MAP to defeat cutout. Ran 17 PSI boost on 93 octane with 10 degrees advance on the timing. The car was pretty darn quick for pretty much less than $20 and thats counting $15 for a manual boost controller which you might already have. A zener diode is less than a dollar, I couldn't find any locally so I found a place on the internet and ordered 2 of them in case I messed up...which I did, so order 2 and with shipping was like $7 or so.
I never had any issues with detonation, no gaskets blew. No IC, no alky injection, just raised fuel pressure and 10 degree timing.

[R/T]

I ran 18 / 20 with an IC and bigger injectors.

[OnLooker]

I run 16ish with alcohol.

[BadAssPerformance]

With the SDAC-Chicago New Yorker we ran a non-intercooled log T1 up to ~25psi on high octane with stock T2 injectors... best of a 13.78 that way