Challenger Drag Pak Owners

Chris "drooze" Wertman · 02-20-2010, 07:51 PM

Stockers often run some very close P-V clearances and it sounds like you need to be checking this.

Already done, lots and lots, clay didnt even touch at over .100 same cam, no advance.

I added a 4 degree advance on this install...so if anything, I would be getting closer on the intake side.

This motor (same setup not same motor) has gone to over 8k without P/V issues..... And this motors deck heights are a hair lower than the last.

I am not familair with any of these engines or the valvetrain layout.

The way the exhaust rocker is, if the clearance (and we Did NOT use stantons keepers as they were heavy for me) but I will, that could have been out issue, on the last motor the valve train was picture perfect albeit saw other failures, we simply replicated it....

BUT on this motor with the Valve job and seat work, well it looks like the valves may have moved up .010 or so, closing up the rocker clerance, because of the odd short throw they could possibly and I say possibly end in a jam up or lockup condition. It would appear.....

Warped valve stems is a new term to me....
Of course with the questionable quality of the parts out there today anything is possible I suppose.......

The valves are made in Argentina....true....nuff said.

Your valvetrain is your most critical area in most any race engine and that has always been my view......You break something on top and it often leads to catastrophic failure.....

Couldnt agree more, well be "ironed" out before were running, and right.

02-20-2010, 07:51 PM	#11
Chris "drooze" Wertman VIP Member Join Date: Sep 2009 Location: Barberton Ohio Posts: 1,114 Likes: 0 Liked 0 Times in 0 Posts	Re: Challenger Drag Pak Owners Stockers often run some very close P-V clearances and it sounds like you need to be checking this. Already done, lots and lots, clay didnt even touch at over .100 same cam, no advance. I added a 4 degree advance on this install...so if anything, I would be getting closer on the intake side. This motor (same setup not same motor) has gone to over 8k without P/V issues..... And this motors deck heights are a hair lower than the last. I am not familair with any of these engines or the valvetrain layout. The way the exhaust rocker is, if the clearance (and we Did NOT use stantons keepers as they were heavy for me) but I will, that could have been out issue, on the last motor the valve train was picture perfect albeit saw other failures, we simply replicated it.... BUT on this motor with the Valve job and seat work, well it looks like the valves may have moved up .010 or so, closing up the rocker clerance, because of the odd short throw they could possibly and I say possibly end in a jam up or lockup condition. It would appear..... Warped valve stems is a new term to me.... Of course with the questionable quality of the parts out there today anything is possible I suppose....... The valves are made in Argentina....true....nuff said. Your valvetrain is your most critical area in most any race engine and that has always been my view......You break something on top and it often leads to catastrophic failure..... Couldnt agree more, well be "ironed" out before were running, and right.