dq

rgarvey · 03-28-2008, 07:04 PM

anybody know why jerry davis is on the dq list at houston?

David Lee · 03-28-2008, 07:09 PM

it just could be as simple as not passing the fuel piss test

RJ Sledge · 03-28-2008, 09:55 PM

They tore down 3 cars, Jarrod Granier and Terry Emmons got through, heard that Jerry had a problem with cam and heads??? I guess if you attend a Divisional Race or National in Div 4 'Land" you better be right or you might be toast. It ought to be interesting at Belle Rose next week, as Mr. Roberson will be on the prowl, and Pat has lots of empty shop space with engine hoists to spare. Have already heard of a "rod and piston" that is suppose to be coming out down there, wonder who will win the lottery???

Ain't it great

Later RJ

Bruce Noland · 03-30-2008, 01:31 PM

We should have a best no name contest!

Jeremy · 03-30-2008, 08:29 PM

Cam lift checked .010 safe side with my check lifter during the inspection but Bruce would only accept an NHRA lifter. They used a big block Mopar lifter which is different push rod seat which caused an increase. By the time I figured out what was going down I was gone.

5 cc's of the port volume was because of the change from the stock tulip valve to a cut down Manley nail head valve and some more for the new any valve job.

Thanks
Jerry

Chad Rhodes · 03-30-2008, 08:43 PM

Quote:

Originally Posted by Jeremy

Cam lift checked .010 safe side with my check lifter during the inspection but Bruce would only accept an NHRA lifter. They used a big block Mopar lifter which is different push rod seat which caused an increase. By the time I figured out what was going down I was gone.

5 cc's of the port volume was because of the change from the stock tulip valve to a cut down Manley nail head valve and some more for the new any valve job.

Thanks
Jerry

how could a different pushrod seat make it move further? changed the rocker geometry i guess?

Alan Roehrich · 03-30-2008, 09:04 PM

The location of the pushrod seat directly effects the effective length of the pushrod. Now, a rocker arm is NOT constant ratio. The ratio of a rocker arm changes constantly as the ends rotate around the fulcrum. Raising or lowering the pushrod seat raises or lowers the pushrod, changing the effective ratio of the rocker at various points.

Larry Hill · 03-30-2008, 09:04 PM

If the lifter seat is and or the lifter is taller than the one used, the adjustment screw moves closer to the fulcrum changing the lift at the valve.
On head runner cc there is no rule in stock.

Alan Roehrich · 03-30-2008, 09:07 PM

I was told by 3-4 NHRA tech guys that they are pouring Stock heads at random, and collecting data to make a database.

Jeremy · 03-30-2008, 09:22 PM

Lifter push rods angle on a small Mopar and the Hemi's are very bad. If the correct lifter (with lots of clearance around the push rod)is not used the pushrod will hit the side of the push rod seat and cause the push rod to raise off of it's seat which will increase the lift.

03-28-2008, 07:04 PM	#1
rgarvey Junior Member Join Date: Jun 2007 Posts: 58 Likes: 0 Liked 0 Times in 0 Posts	dq anybody know why jerry davis is on the dq list at houston?

03-28-2008, 07:09 PM	#2
David Lee VIP Member Join Date: Oct 2007 Posts: 1,097 Likes: 404 Liked 250 Times in 101 Posts	Re: dq it just could be as simple as not passing the fuel piss test

03-28-2008, 09:55 PM	#3
RJ Sledge Senior Member Join Date: Jun 2007 Posts: 752 Likes: 377 Liked 250 Times in 79 Posts	Re: dq They tore down 3 cars, Jarrod Granier and Terry Emmons got through, heard that Jerry had a problem with cam and heads??? I guess if you attend a Divisional Race or National in Div 4 'Land" you better be right or you might be toast. It ought to be interesting at Belle Rose next week, as Mr. Roberson will be on the prowl, and Pat has lots of empty shop space with engine hoists to spare. Have already heard of a "rod and piston" that is suppose to be coming out down there, wonder who will win the lottery??? Ain't it great Later RJ

03-30-2008, 01:31 PM	#4
Bruce Noland VIP Member Join Date: Jun 2002 Posts: 1,855 Likes: 83 Liked 444 Times in 145 Posts	Re: dq We should have a best no name contest! __________________ Bruce Noland 1788 STK

03-30-2008, 08:29 PM	#5
Jeremy Junior Member Join Date: Dec 2002 Posts: 95 Likes: 0 Liked 1 Time in 1 Post	Re: dq Cam lift checked .010 safe side with my check lifter during the inspection but Bruce would only accept an NHRA lifter. They used a big block Mopar lifter which is different push rod seat which caused an increase. By the time I figured out what was going down I was gone. 5 cc's of the port volume was because of the change from the stock tulip valve to a cut down Manley nail head valve and some more for the new any valve job. Thanks Jerry

03-30-2008, 09:04 PM	#7
Alan Roehrich VIP Member Join Date: May 2006 Location: Murfreesboro TN Posts: 4,916 Likes: 997 Liked 1,046 Times in 276 Posts	Re: dq The location of the pushrod seat directly effects the effective length of the pushrod. Now, a rocker arm is NOT constant ratio. The ratio of a rocker arm changes constantly as the ends rotate around the fulcrum. Raising or lowering the pushrod seat raises or lowers the pushrod, changing the effective ratio of the rocker at various points. __________________ Alan Roehrich 212A G/S

03-30-2008, 09:04 PM	#8
Larry Hill Live Reporter Join Date: Oct 2004 Location: Hickory, Ky Posts: 10,284 Likes: 1,637 Liked 9,460 Times in 1,960 Posts	Re: dq If the lifter seat is and or the lifter is taller than the one used, the adjustment screw moves closer to the fulcrum changing the lift at the valve. On head runner cc there is no rule in stock. __________________ IHM Used Parts https://ihmusedparts.com 888-821-1817

03-30-2008, 09:07 PM	#9
Alan Roehrich VIP Member Join Date: May 2006 Location: Murfreesboro TN Posts: 4,916 Likes: 997 Liked 1,046 Times in 276 Posts	Re: dq I was told by 3-4 NHRA tech guys that they are pouring Stock heads at random, and collecting data to make a database. __________________ Alan Roehrich 212A G/S

03-30-2008, 09:22 PM	#10
Jeremy Junior Member Join Date: Dec 2002 Posts: 95 Likes: 0 Liked 1 Time in 1 Post	Re: dq Lifter push rods angle on a small Mopar and the Hemi's are very bad. If the correct lifter (with lots of clearance around the push rod)is not used the pushrod will hit the side of the push rod seat and cause the push rod to raise off of it's seat which will increase the lift.