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Re: W2 heads [Re: Spode] #555482 12/17/09 02:32 AM 12/17/09 02:32 AM
Joined: Feb 2007 Posts: 1,025 Las Vegas, NV dodgeboy11 super stock
dodgeboy11 super stock Joined: Feb 2007 Posts: 1,025 Las Vegas, NV	You'll lose more from the 59 degree lifter than you will from the angle of the pushrod to the rocker.

Re: W2 heads [Re: RyanJ] #555483 12/17/09 04:29 AM 12/17/09 04:29 AM
Joined: Jan 2007 Posts: 8,043 Mt Morris Michigan mopar dave master
mopar dave master Joined: Jan 2007 Posts: 8,043 Mt Morris Michigan	if your looking to put w2's on a street motor i would suggest a closed chamber w2 to get a good quench for pump gas and not the open chamber. ask me how i know. http://www.youtube.com/watch?v=aIxaesJ190U http://youtu.be/lCZAaN7fFLg

Re: W2 heads [Re: MR_P_BODY] #555484 12/17/09 08:53 AM 12/17/09 08:53 AM
Joined: Jan 2003 Posts: 16,123 Grand Haven, MI patrick I Live Here
patrick I Live Here Joined: Jan 2003 Posts: 16,123 Grand Haven, MI	Quote: Quote: Quote: Pushrod angles from farther back. Im a rookie but wouldnt pushrod angles like that shown i about 15 degrees from the cam perpendicular reduce the gross lift about 25% (cos)15=.75 +/- Its no where near a 25% loss but it is some umm...what calculator are you using? cos(15)=0.965925.... 1976 Spinnaker White Plymouth Duster, /6 A833OD 1986 Silver/Twilight Blue Chrysler 5th Ave HotRod SOLD!* 2011 Toxic Orange Dodge Charger R/T 2017 Grand Cherokee Overland 2014 Jeep Cherokee Latitude (holy crap, my daughter is driving)

Re: W2 heads [Re: patrick] #555485 12/17/09 10:23 AM 12/17/09 10:23 AM
Joined: Dec 2007 Posts: 302 MG, Brazil v8punch enthusiast
v8punch enthusiast Joined: Dec 2007 Posts: 302 MG, Brazil	I believe the only diference are will you need a longer pushrod.... valve lift will be the same.

Re: W2 heads [Re: v8punch] #555486 12/17/09 10:30 AM 12/17/09 10:30 AM
Joined: Jun 2003 Posts: 52,972 Romeo MI MR_P_BODY Master
MR_P_BODY Master Joined: Jun 2003 Posts: 52,972 Romeo MI	Quote: I believe the only diference are will you need a longer pushrod.... valve lift will be the same. The only real problem with the angle of the intake pushrod is that it side loads the rocker more than the exhaust pushrod with is pretty straight. My back up engine is a roller W-2 and it runs great... went 9.50 with it for a pretty low compression engine

Re: W2 heads [Re: patrick] #555487 12/17/09 10:51 AM 12/17/09 10:51 AM
Joined: Dec 2009 Posts: 242 Upland, California Spode enthusiast
Spode enthusiast Joined: Dec 2009 Posts: 242 Upland, California	Quote: Quote: Quote: Quote: Pushrod angles from farther back. Im a rookie but wouldnt pushrod angles like that shown i about 15 degrees from the cam perpendicular reduce the gross lift about 25% (cos)15=.75 +/- Its no where near a 25% loss but it is some umm...what calculator are you using? cos(15)=0.965925.... sorry i must have hit a wrong key you are correct BTW the calculator is a cast chinese model

Re: W2 heads [Re: RyanJ] #555488 12/17/09 11:24 AM 12/17/09 11:24 AM
Joined: Mar 2008 Posts: 193 Sharpsburg Maryland 4 440farmer member
440farmer member 4 Joined: Mar 2008 Posts: 193 Sharpsburg Maryland	RyanJ - I have a couple of sets of econos and race heads(w2-long valve) that I have had for 20+ years I have alot more port work on the econos then the race Bought mopar roller rockers (blue) shafts, &(alum)stands about 20 years ago After milling pedistals down and moving hole back in shafts roller is still way of center of valve tip. I know the rockers will need clearencing for the springs and still have to clearence for push rods. Could I call you and pick your brain a bit?

Re: W2 heads [Re: v8punch] #555489 12/17/09 12:40 PM 12/17/09 12:40 PM
Joined: Feb 2009 Posts: 1,019 Finland mafo super stock
mafo super stock Joined: Feb 2009 Posts: 1,019 Finland	You will loose quite a bit of lift, the more offset you have the more lift you loose, I found this out the hard way... -65 Valiant,420", all motor,2700#, dot tires, 8,42 @ 160,2

Re: W2 heads [Re: mafo] #555490 12/17/09 12:49 PM 12/17/09 12:49 PM
Joined: Dec 2009 Posts: 242 Upland, California Spode enthusiast
Spode enthusiast Joined: Dec 2009 Posts: 242 Upland, California	Quote: You will loose quite a bit of lift, the more offset you have the more lift you loose, I found this out the hard way... on a .400 lobe cam and 1.5:1 rocker the lift is .600 I figure with pushrod angle of 15 degrees the lift will be .579 .400 x .9659 = .386 x 1.5 = .579 lift at the valve

Re: W2 heads [Re: Spode] #555491 12/17/09 01:18 PM 12/17/09 01:18 PM
Joined: Jul 2006 Posts: 4,595 On the south side of Nowhere S S/ST 3040 master
S/ST 3040 master S Joined: Jul 2006 Posts: 4,595 On the south side of Nowhere	I understand what you're trying to do but, the pushrod angle doesn't affect the lobe lift. edit: Never mind, I see what you are doing. Last edited by S/ST 3040; 12/17/09 01:40 PM.

Re: W2 heads [Re: S/ST 3040] #555492 12/17/09 04:32 PM 12/17/09 04:32 PM
Joined: Feb 2009 Posts: 1,019 Finland mafo super stock
mafo super stock Joined: Feb 2009 Posts: 1,019 Finland	When we made our own rockers I looked into this a bit,we measured lift on both the lifter and the valve and ended up with 1.42-1 ratio with 1.7 rockers This was with 59* block and .900 offset rocker... just a thing to consider when you choose camshaft -65 Valiant,420", all motor,2700#, dot tires, 8,42 @ 160,2

Re: W2 heads [Re: mafo] #555493 12/18/09 01:57 PM 12/18/09 01:57 PM
Joined: Aug 2004 Posts: 2,128 sweden S sshemi top fuel
sshemi top fuel S Joined: Aug 2004 Posts: 2,128 sweden	Quote: When we made our own rockers I looked into this a bit,we measured lift on both the lifter and the valve and ended up with 1.42-1 ratio with 1.7 rockers This was with 59* block and .900 offset rocker... just a thing to consider when you choose camshaft My w5 motor was spot on the camcard lift with Harland sharp rockers. Exactly 0.643 on intake. dont know if Hs take the angle of the pushrods in calcs when making their rockers, but they are equal in lengths with the ex rockers so idont think so.

Re: W2 heads [Re: sshemi] #555494 12/18/09 04:31 PM 12/18/09 04:31 PM
Joined: Feb 2009 Posts: 1,019 Finland mafo super stock
mafo super stock Joined: Feb 2009 Posts: 1,019 Finland	I think my example was on the extreme side, we had to use a lot of offset on those Swedish made heads -65 Valiant,420", all motor,2700#, dot tires, 8,42 @ 160,2

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