406 Progress
Thread Starter
Le Mans Master
Joined: Oct 2001
Posts: 5,943
Likes: 3
From: Wildwood IL
406 Progress
have made some progress on my engine build. Valve train is just a mock up. Still have to adjust pushrod guides to center the rockers on the valve tips. Here's a few pics for you motorheads.
Eagle rods, ARP everywhere. All clearance done.
AFR 210's with Isky Hydro Roller valve springs.
Manley Roller chain with Torrington cam thrust bearing. A Cloyes quick button cover is going on next.
Crower hydro roller cam & lifters & Manley custom length moly pushrods.
Comp Pro-Magnum Rockers. I had to clearance them a bit (.015) to clear those AFR 1.550 retainers.
Pro Products Crosswind. RPM Airgap clone
I am further along than these pics, but my camera took a nose dive off the fender last week and is gone. Waiting for the new one to come. More pics when it does.
Eddie
Eagle rods, ARP everywhere. All clearance done.
AFR 210's with Isky Hydro Roller valve springs.
Manley Roller chain with Torrington cam thrust bearing. A Cloyes quick button cover is going on next.
Crower hydro roller cam & lifters & Manley custom length moly pushrods.
Comp Pro-Magnum Rockers. I had to clearance them a bit (.015) to clear those AFR 1.550 retainers.
Pro Products Crosswind. RPM Airgap clone
I am further along than these pics, but my camera took a nose dive off the fender last week and is gone. Waiting for the new one to come. More pics when it does.
Eddie
Last edited by Edzred72; Nov 3, 2006 at 05:25 PM.
Burning Brakes
Joined: Jan 2004
Posts: 1,043
Likes: 4
From: Va
Are those the new AFR195 with the improved oil returns and higher flow numbers?
If not you may want to have the oli returns opened up and traugh machined between the valves so oil does not puddle. Call tech at AFR and they can provide specs on what to do.
If not you may want to have the oli returns opened up and traugh machined between the valves so oil does not puddle. Call tech at AFR and they can provide specs on what to do.
Thread Starter
Le Mans Master
Joined: Oct 2001
Posts: 5,943
Likes: 3
From: Wildwood IL
Originally Posted by MotorHead
Nice ! 
What's your cam and compression ratio again. Are you looking at the quench ? 
What's your cam and compression ratio again. Are you looking at the quench ? 230*-236*
.544-.555 @ 1.5
112 LSA
10.1 Compression
Quench is .049 A bit more than optimimum, but since my deck is .010 I couldn't find a head gasket suitable for aluminum heads in the .025-.030 range. I also wanted to stick to AFR gasket recomendations, and avoid brinnell (sp?) the heads. I called Cometic and they couldn't or wouldn't help me there either. Any Ideas before I go further?????
It's a nice mild cam for the purpose intended. Crower makes two more steps up in their Hyrol Roller line, but a solid roller will be my next step up if I don't like this one.
Eddie
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Race Director
Joined: May 2005
Posts: 10,674
Likes: 122
From: Millington Illinois
St. Jude Donor '08-'09
Originally Posted by Redshark6974
that cam is going to be very tame in a 406 and those heads...I like it though.
Last edited by 63mako; Nov 4, 2006 at 04:28 PM.
Race Director
Joined: Apr 2000
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From: Who says "Nothing is impossible" ? I've been doing nothing for years.
Head gaskets are a problem I couldn't find any off the shelf gaskets thinner than about .040". I opted for off the shelf Felpro 1004 at 0.041" combined with pistons .020" in the hole and the quench is .061" Mine runs fine with no detonation at 11:1 cr and it made 550HP untuned so my feeling is this quench thing is over rated.
Even I went to talk to my machinist at the time about decking the block to get a better quench he didn't think a low quench was a big deal, he said "20 in the hole with a 40thou gasket has been working for GM for years". He then added "Leave it the way it is and just pretend you have a .040" quench and you won't know the difference "
Even I went to talk to my machinist at the time about decking the block to get a better quench he didn't think a low quench was a big deal, he said "20 in the hole with a 40thou gasket has been working for GM for years". He then added "Leave it the way it is and just pretend you have a .040" quench and you won't know the difference "
Team Owner
Joined: Apr 1999
Posts: 21,953
Likes: 1,444
From: Reno Nevada
2024 C3 of the Year Finalist- Modified
It's a little late now, but AFR heads need to be opened up on the two end oil returns. Smokedtires had his 210's all machined so the oil doesn't puddle around the springs.
Comp Pro-Magnum Rockers. I had to clearance them a bit (.015) to clear those AFR 1.550 retainers.
Your the second person that has told me that they ground on their rockers to clear the spring retainers. At your low lift and spring pressure it's not a big deal. The correct fix is to use the .100 longer vavles/longer rocker studs/longer pushrods. If it close you can just get by with longer pushrods to where you get exceptable centering of the roller tip to valve stem pattern
My spare AFR210's - showing the ground out oil return ends
Comp Pro-Magnum Rockers. I had to clearance them a bit (.015) to clear those AFR 1.550 retainers.
Your the second person that has told me that they ground on their rockers to clear the spring retainers. At your low lift and spring pressure it's not a big deal. The correct fix is to use the .100 longer vavles/longer rocker studs/longer pushrods. If it close you can just get by with longer pushrods to where you get exceptable centering of the roller tip to valve stem pattern
My spare AFR210's - showing the ground out oil return ends
Last edited by gkull; Nov 4, 2006 at 06:30 PM.
Awesome set-up.
Safety Car
Joined: Aug 2000
Posts: 3,909
Likes: 26
From: Clymer PA
Even I went to talk to my machinist at the time about decking the block to get a better quench he didn't think a low quench was a big deal, he said "20 in the hole with a 40thou gasket has been working for GM for years". He then added "Leave it the way it is and just pretend you have a .040" quench and you won't know the difference "
Thread Starter
Le Mans Master
Joined: Oct 2001
Posts: 5,943
Likes: 3
From: Wildwood IL
Originally Posted by george2066
ed
whats the plan for the rear? are the yolks for the half shaft the u bolt type? i'm in the 406 boat with new thoughts to the rear.
whats the plan for the rear? are the yolks for the half shaft the u bolt type? i'm in the 406 boat with new thoughts to the rear.
Seems the previous owner at least did something right...I have big block rear yolk straps, front springs, and HD sway bars front & rear. Think my car was a SB circle track car in a previous life. Also could indicate why the right rear wheel bearing was bad too!!
Eddie
Thread Starter
Le Mans Master
Joined: Oct 2001
Posts: 5,943
Likes: 3
From: Wildwood IL
Originally Posted by gkull
It's a little late now, but AFR heads need to be opened up on the two end oil returns.
[Quote]MotorHead Head. gaskets are a problem I couldn't find any off the shelf gaskets thinner than about .040". [Quote]
My Felpro 1014 is .039.
Eddie
Race Director
Joined: May 2005
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From: Millington Illinois
St. Jude Donor '08-'09
Originally Posted by gkull
I'll do some head gasket research for you. I have the Flatout .021 copper on my 383 and I have the cometic MLS .024 or something close to that.
I think your right on the Cometic gasket. It is available in a.031 and a smaller thickness. I was originally looking at leaving my pistons in the hole .010 and going with the .031 gasket.
Race Director
Joined: Apr 2000
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From: Who says "Nothing is impossible" ? I've been doing nothing for years.
What is the bore size on the Cometic ? I know someone who ran one on his 406ci and the Cometic gasket was too close to the bore size and some of the gasket was actually hanging in the cylinder and burning, he had to swap it out for the Felpro, which is about .050" bigger than a .030" over bore on a 406ci, I guess that's why they make them bigger.
Team Owner
Joined: Apr 1999
Posts: 21,953
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From: Reno Nevada
2024 C3 of the Year Finalist- Modified
I went to the Cometic web site and i can't find my gasket listed. So it must be a custom. On the package it says .026 MLS 4.155 bore size.
It was something like $130. It's so I can get .038 quench on my new 427 with it's 4.125 bore. My pistons are -.010 - .012 down in the hole.
It was something like $130. It's so I can get .038 quench on my new 427 with it's 4.125 bore. My pistons are -.010 - .012 down in the hole.