Re: 5.9 Magnum PR Guide Plates
[Re: BcudaChris]
#2559654
10/05/18 09:33 PM
10/05/18 09:33 PM
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Joined: Jan 2003
Posts: 10,015 Frostbitefalls MN (Rocky&Bullw...
gregsdart
I Live Here
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I Live Here
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Posts: 10,015
Frostbitefalls MN (Rocky&Bullw...
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Comp has a guide plate made for the magnum heads. I had to sand all the Comp plates to get clearance, because for some reason they tightened up when i torqued down the studs. So if you go with those, be prepaired to "fix" them.
8..603 156 mph best, 2905 lbs 549, indy 572-13, alky
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Re: 5.9 Magnum PR Guide Plates
[Re: BcudaChris]
#2559844
10/06/18 12:58 PM
10/06/18 12:58 PM
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Joined: Nov 2003
Posts: 36,041 Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
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Posts: 36,041
Lincoln Nebraska
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I'm running EQ heads and using the Chebby style rocker setup. the wipe patterns are atrocious. Me too & I'm mocking up & the rocker is too long on the valve side & the roller is almost all the way off of the valve (on ex side). Not sure how the guide plate or anything on that other side would affect this but I am in need of a solution also. EDIT comp cams 4825 plates, mounting hole & PR guide hole are both 5/16". had to get furd studs 5/16/3/8 cuz the CC ones did not have enough 3/8 stud length up top but I still have the W/P & rocker length to resolve, might need new rockers.
Last edited by RapidRobert; 10/06/18 01:22 PM.
live every 24 hour block of time like it's your last day on earth
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Re: 5.9 Magnum PR Guide Plates
[Re: BcudaChris]
#2560313
10/07/18 12:37 PM
10/07/18 12:37 PM
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Joined: Nov 2003
Posts: 36,041 Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
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Lincoln Nebraska
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Mike at B3 sent me those rockers (I cant tell the brand) & the studs which were too short. I then got the Lunati Furd ones in the pic which are longer on the top 3/8 thread length & on the bottom 5/16 thread length then I mocked up but the roller is too far to the outside so I need to call him. I will go out & mockup a pair of rockers & the plate & see if the alignment is good if that info/the part #'s I have will help you. I ain't recalling any in or out pidgeon toed from last weeks checks but I will check. EDIT with 1.5 rockers which side of the fulcrum is shorter, the pushrod or the valve side? & I did not get any paperwork with these rockers so I dont know if they are Hughes' offerings or not. Dwayne poerter "fast68plymouth" picked the cam for me with my 1.6 rockers so if 1.5 is a solution that would make the cam milder but maybe it would help the wipe pattern contact, not sure the solution yet just thinking out loud till I get it solved.
Last edited by RapidRobert; 10/07/18 12:43 PM.
live every 24 hour block of time like it's your last day on earth
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Re: 5.9 Magnum PR Guide Plates
[Re: BcudaChris]
#2561078
10/08/18 09:20 PM
10/08/18 09:20 PM
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Joined: Nov 2003
Posts: 36,041 Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
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Lincoln Nebraska
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I get told that I am thinking too much! (near daily) I had a 2 hr conversation with Mike (B3 racing) this afternoon & I am going to pin down how far out the roller is on the tip & he said if it ain't closer than .100" of the edge I "likely" can get by but to check the tip after the first race but that I might need to relocate the stud hole with an end mill/sleeve then a 7/16 stud (which I ain't willing to do right now). I didn't get out there to mockup today but tomorrow looks good. I still have the light springs in there now & not sure if that will load it enough to produce any pidgeon toed splaying that could happen but I will see what I see tomorrow for you & holler back.
live every 24 hour block of time like it's your last day on earth
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Re: 5.9 Magnum PR Guide Plates
[Re: BcudaChris]
#2561416
10/09/18 02:07 PM
10/09/18 02:07 PM
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Joined: Mar 2007
Posts: 3,287 West Coast, USA
jbc426
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West Coast, USA
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I got the Eddie heads, rocker arms, guide plates and pushrods from Hughes. Everything bolted together nicely, but I did have to reposition the guide plates a few times to get them right. No grinding required though.
I have my transmission out for a refresh and ordered a set of Jomar stud girdles to install. They are not on their web page yet, but they are available. It will be interesting to see if the reduced deflection is actually noticeable.
1970 Plymouth 'Cuda #'s 440-6(block in storage)currently 493" 6 pack, Shaker, 5 speed Passon, 4.10's 1968 Plymouth Barracuda Convertible 408 Magnum EFI with 4 speed automatic overdrive, 3800 stall lock-up converter and 4.30's (closest thing to an automatic 5 speed going)
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Re: 5.9 Magnum PR Guide Plates
[Re: BcudaChris]
#2561460
10/09/18 03:38 PM
10/09/18 03:38 PM
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Joined: Mar 2005
Posts: 403 Colorado front range
BcudaChris
OP
mopar
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Colorado front range
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Basically the same here on the Hughes kit, though I'm using EQ heads. Still though, the rocker tips have a wonky tip placement and wipe pattern, though they fit the .100" from the edges of the stem L-R Robert mentioned, the rollers are completely on the stem throughout travel, they are not centered fore and aft.
On my install, they are not off enough to adversely affect performance per Hughes advice, but the wipe patterns are not perfectly centered on the valve stems like we like to see. Hughes told me they're never perfect with this setup and basically split the difference until they're both as close as possible. They're experience seems to be that as long as both rollers stay completely on the valve stem through the entire open/close sequence (and all other clearances are good), good enough. Mine most definitely do. But the wonky wipe pattern and fore and aft off center condition bothers me.
Best I could get from Hughes is that they like the Ede plates the best, though all those on the market have their warts. No response when asking about adjustable guide plates.
Hughes says no need for the girdles below 7K (or so) but given the 5/16x3/8 stud setup, it will have a nice placebo effect on me. Mathematically, my setup has the power dropping off by 6700 (though no strip or dyno time to confirm the exact RPM yet) so theoretically not necessary.
I may just keep an eye on the situation and let this dog lie as future plans for the heads include a wide mouth port job which will of course require valve train modification.
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Re: 5.9 Magnum PR Guide Plates
[Re: BcudaChris]
#2562091
10/10/18 07:42 PM
10/10/18 07:42 PM
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Joined: Nov 2003
Posts: 36,041 Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
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Lincoln Nebraska
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FWIW Here's what I have (pushrods not in) so the roller looks way further in than it actually is (with everything mocked up ready to go). the guide plate slots are .3330" and the 5/16 pushrods are .3115". Not sure this applies to your dilemma but this cannot pidgeon toe (as is).
live every 24 hour block of time like it's your last day on earth
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Re: 5.9 Magnum PR Guide Plates
[Re: BcudaChris]
#2562703
10/12/18 12:21 AM
10/12/18 12:21 AM
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Joined: Jan 2005
Posts: 4,243 Charlotte, North Carolina
sgcuda
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Charlotte, North Carolina
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Why does it look to me like those pressed in pins are ready to pop out of the rocker tips?
There shouldn't be any stress on the guides. Why couldn't you just cut them in half, spread them as necessary, and weld them up for better pushrod alignment?
[image][/image]
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Re: 5.9 Magnum PR Guide Plates
[Re: BcudaChris]
#2562732
10/12/18 01:26 AM
10/12/18 01:26 AM
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Joined: Nov 2003
Posts: 36,041 Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
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Yes I dont wanna end mill out the holes. Yes I believe these are straight up chebby items. If you have a part # for some with with a shorter fulcrum length on the valve side let me know & I will get one & mockup. & good eye on the pressed in pins (thank you), I will check em.
live every 24 hour block of time like it's your last day on earth
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Re: 5.9 Magnum PR Guide Plates
[Re: BcudaChris]
#2562952
10/12/18 03:36 PM
10/12/18 03:36 PM
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Joined: Mar 2005
Posts: 403 Colorado front range
BcudaChris
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Colorado front range
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Here's the setup I have. I don't see them individually listed, unfortunately. I bet the would set you up with one, Hughes has really been a pleasure to deal with. http://www.hughesengines.com/Index/produ...mp;partid=25405I don't know for sure, but I think these are PRW's I haven't admitted to needing reading glasses yet, so I can't tell for sure from the makers mark. Incidentally, I got my set from Mancini when they were having a sale. Also, if time allows, I plan to pull my rocker boxes this weekend for an inspection. If I'm able, I'll take a couple of pictures. Upon edit, I'm a daisy if these ain't them... http://store.prw-usa.com/0236006-dodge-3...el-rocker-arms/I'd bet the Chevy 1.65 is the same for almost $50 less.
Last edited by BcudaChris; 10/12/18 03:45 PM.
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