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Re: kb190 piston fit eddy head
[Re: Hellrico505]
#2707081
10/15/19 06:54 PM
10/15/19 06:54 PM
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Joined: Nov 2003
Posts: 36,040 Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
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All I can add is, with my 408 stroker my man had to machine some or all of the same .085" step dome on the KB's to get me to zero deck (closed chamber EQ mag heads). EDIT .040" cometics
Last edited by RapidRobert; 10/15/19 07:34 PM.
live every 24 hour block of time like it's your last day on earth
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Re: kb190 piston fit eddy head
[Re: Hellrico505]
#2707422
10/16/19 10:16 PM
10/16/19 10:16 PM
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Joined: Aug 2007
Posts: 2,356 Kentucky
dfsmopars
top fuel
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top fuel
Joined: Aug 2007
Posts: 2,356
Kentucky
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Iβll have to check the exact part number on the KB pistons I put on my 5.9 and get back with you. Mine were 0.017β above deck but I went with RHS iron heads. It may be π and π but maybe something will help. Iβll try tomorrow to go back to my paperwork and check.
β72 Charger, 5.9 Magnum, Tremec 5 spd., Pro-Touring β14 Big Horn, Quad Cab, 4x4, 1500
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Re: kb190 piston fit eddy head
[Re: Hellrico505]
#2707823
10/17/19 07:50 PM
10/17/19 07:50 PM
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Joined: Aug 2007
Posts: 2,356 Kentucky
dfsmopars
top fuel
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top fuel
Joined: Aug 2007
Posts: 2,356
Kentucky
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I looked at my receipts from nine years ago and apparently Hughes doesnβt use the same part numbers. Anyway I think your combination is going to be a lot different than mine. The KB quench dome pistons I bought were 0.017β above deck and were good for 9.25:1cr with a 62 cc head. The pistons you are looking are at 11.5:1 cr. I would think clearance would be a concern.
β72 Charger, 5.9 Magnum, Tremec 5 spd., Pro-Touring β14 Big Horn, Quad Cab, 4x4, 1500
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Re: kb190 piston fit eddy head
[Re: dfsmopars]
#2709064
10/22/19 01:29 AM
10/22/19 01:29 AM
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Joined: Jan 2003
Posts: 16,376
dogdays
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 16,376
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This can be solved by looking at pictures. The 190 has a dome that extends from the valves to the spark plug side of the piston. It's circular. The Magnum combustion chamber has a small squish pad between the plug and the outside of the cylinder. The KB190 dome is 0.080" above the upper edge of the piston. So, any chamber like the Mag head will have interference. It will not bolt together and run. The valve placement and angle are the same for the LA and Mag heads, or very very close. It's not the valves. The KB190 appears to be made for an LA head. It is definitely made for an LA block, deck height 9.599". The Mag block is 9.577. The compression height of the 190 is 1.675". Add that to a 6.123" rod and 1.79" half of a stroke and see what you get. It'll stick out of a Mag block. But that can be taken care of by the head gasket. The Mag squish pad is the problem. The dome would have to be machined off in that area. See Jeg's picture of a typical Mag chamber: https://www.jegs.com/i/JEGS/555/514200/10002/-1Now the KB190: https://uempistons.com/i-28053-1-set-kb190-std-1-set-4000am8-std.htOr, you could call Edelbrock and ask them! R.
Last edited by dogdays; 10/22/19 01:31 AM.
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