Roller Rockers on Stocker Engine ?

Jim Cassels · 06-06-2009, 06:53 AM

Aubrey,
Not familiar with IHRA but do they allow roller rockers on a stock motor?

Bob Pagano · 06-06-2009, 07:20 AM

Roller rockers are legal in IHRA

Jim Cassels · 06-06-2009, 07:43 AM

Thanks Bob I was not aware.

Jim Cassels · 06-06-2009, 07:07 PM

Quote:

Originally Posted by smracer2002

Its good to see a W headed motor out there.

Thread jack,Jim C how you doing?.

Unjack.

Chris email me. jimmyca@windstream.net

Aubrey N Bruneau · 06-06-2009, 09:44 PM

Thanks SM

Yes, I think I finally got her working too !

Aubrey N Bruneau · 06-07-2009, 11:02 PM

Thanks Al... good point
Rockers are on now. All's good. Geometry is dead on.

I actually had a bit of an issue with the stamped steel rockers when I assembled the engine. These new Manton pushrods have a different tip than normal, and I found all the intake rockers getting "bumped" on the inner/underside, by the pushrod, when near full lift. I had to take my die grinder, and create an ever-so-slight little "pocket", so the pushrod would not touch it.

The other thing too, is that my valve lift is very near my maximum, and changing pushrods... especially if slightly longer, could put my lift over the top.

randy wilson · 06-08-2009, 10:05 AM

pushrod length does not change valve lift or duration. only cam profile, rocker ratio, and valve lash can do that.

06-06-2009, 06:53 AM	#1
Jim Cassels Junior Member Join Date: Nov 2002 Location: Cairo, Ga. Posts: 90 Likes: 2 Liked 0 Times in 0 Posts	Re: Roller Rockers on Stocker Engine ? Aubrey, Not familiar with IHRA but do they allow roller rockers on a stock motor?

06-06-2009, 07:20 AM	#2
Bob Pagano VIP Member Join Date: Jun 2002 Location: New Holland, PA Mooresville,NC Posts: 1,163 Likes: 249 Liked 16 Times in 11 Posts	Re: Roller Rockers on Stocker Engine ? Roller rockers are legal in IHRA __________________ Bob Pagano A/SA

06-06-2009, 07:43 AM	#3
Jim Cassels Junior Member Join Date: Nov 2002 Location: Cairo, Ga. Posts: 90 Likes: 2 Liked 0 Times in 0 Posts	Re: Roller Rockers on Stocker Engine ? Thanks Bob I was not aware.

06-06-2009, 09:44 PM	#5
Aubrey N Bruneau Member Join Date: Sep 2003 Location: South Eastern Alberta, Canada Posts: 311 Likes: 6 Liked 7 Times in 3 Posts	Re: Roller Rockers on Stocker Engine ? Thanks SM Yes, I think I finally got her working too ! __________________ Aubrey N Bruneau 6409 C/S 62 BelAir sport coupe, 409 HP 409

06-07-2009, 11:02 PM	#6
Aubrey N Bruneau Member Join Date: Sep 2003 Location: South Eastern Alberta, Canada Posts: 311 Likes: 6 Liked 7 Times in 3 Posts	Re: Roller Rockers on Stocker Engine ? Thanks Al... good point Rockers are on now. All's good. Geometry is dead on. I actually had a bit of an issue with the stamped steel rockers when I assembled the engine. These new Manton pushrods have a different tip than normal, and I found all the intake rockers getting "bumped" on the inner/underside, by the pushrod, when near full lift. I had to take my die grinder, and create an ever-so-slight little "pocket", so the pushrod would not touch it. The other thing too, is that my valve lift is very near my maximum, and changing pushrods... especially if slightly longer, could put my lift over the top. __________________ Aubrey N Bruneau 6409 C/S 62 BelAir sport coupe, 409 HP 409

06-08-2009, 10:05 AM	#7
randy wilson Senior Member Join Date: Jan 2007 Location: N/A Posts: 882 Likes: 0 Liked 22 Times in 22 Posts	Re: Roller Rockers on Stocker Engine ? pushrod length does not change valve lift or duration. only cam profile, rocker ratio, and valve lash can do that. __________________ don,t have one