Ford 292 Head - Milling to Raise Compression?

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ewil	Posted 11 Years Ago
Hitting on all eight cylinders Group: Forum Members Last Active: 10 Years Ago Posts: 5, Visits: 31	Hello! I'm new here, i live in Brazil and recently i have bought an Ford Galaxie LTD 71', that is equipped with an 292 engine. I disassembled the heads and i'm doing some work on it as it has some problem with valves. I've read some content about what head do i have, but the code found inside the valve cover, does not match with any code on ford Y block head sheet found on internet... so i don't know things like what's the original height (or chamber volume). As i've mensured, my chamber has 73cc. All i know about it, is the code "1E6" and more in the right another code "DOTU-6090-G"... I know that 6090 means head, and maybe the DOTU is the code of my head, but there's no information about it! My question is: As the down side (block) looks good, i will not take it out for now, but as the heads are out and already done some work on it, i'm thinking about mill it a little to raise a little of compression ratio... As it's hard to find pieces of this engine and all about it is very expansive here, i'm not planning anything nasty, i will maintain the engine original, just a little raise of compression to get a better response and less combustible consumption. So must i mill it? if yes, how much? I'm afraid to mill it so much to reach some water or oil gallery... nor reach the minimum height of head as it can not take any cleanup mill at future... Someone has an idea of his original height? Thanks alot!!! 292 Compression Ford Mill Ratio
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ewil	Posted 11 Years Ago
Hitting on all eight cylinders Group: Forum Members Last Active: 10 Years Ago Posts: 5, Visits: 31	Hello guys! Thanks alot for all the precious information given here! The heads are on repair, so i will check for these possible measuring pads this week! Stuey link looks also good and very interesting, this engine was also used by small trucks like F100 here, this site is on my favorites now I was also looking again the head sheet in the 56's, and looks like the 272/292 have something next the 73cc, this makes me think that my heads received just an cleanup mill until now... lovefordgalaxie, do you know how much cc does your heads have, or the height after milling it? Looks like you reached the CR to something like 9:1? Going serious like you said it's just a dream for me, but in the reallity i just want to raise some CR to adapt the engine for our reality (poor combustion quallity as you know!), and yes, i will take the DFV carburator out but it's to take a place to an TBI with Megasquirt! Thanks alot guys!!
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*Hoosier Hurricane*	Posted 11 Years Ago
Supercharged Group: Moderators Last Active: 3 hours ago Posts: 3.7K, Visits: 322.0K	Ewill: If you mill a substantial amount off the head, like .060 inches, you should mill 1.4 times that amount off the intake surface of the head so the manifold will fit. With an .060 mill that would be .084 off the intake surface. John - "The Hoosier Hurricane"
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ewil	Posted 11 Years Ago
Hitting on all eight cylinders Group: Forum Members Last Active: 10 Years Ago Posts: 5, Visits: 31	Hoosier Hurricane (9/1/2014) Ewill: If you mill a substantial amount off the head, like .060 inches, you should mill 1.4 times that amount off the intake surface of the head so the manifold will fit. With an .060 mill that would be .084 off the intake surface. Hello Hoosier Hurricane! Do you think that is a good idea to mill something from the head? i ever think about if maybe the best is keep as it is, and wait till the time i remove the block out and then i can mill from the block cause will be more substantial to CR and will have better Squish also... OR buy a pistons with dome... in both cases i will keep my head chamber and possible do some cleanup mill if needed (keep it untouched for safety)... I'm only doing all the job needed to have the head healtly, the block looks ok, its the cause i won't remove it for now to, then comes the question if must or not mill a little to raise the CR! Thanks!
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*Hoosier Hurricane*	Posted 11 Years Ago
Supercharged Group: Moderators Last Active: 3 hours ago Posts: 3.7K, Visits: 322.0K	There is nothing wrong with milling for more compression. You are right, milling the block gets you more compression and better quench. If you take a lot off the block, you still need to mill something to restore intake fit. Probably better to mill the intake side of the heads and make the heads unique to that block. If you mill the intake manifold, then want to change it for something else, the new one would need milled also. If you have milled from the heads, any intake will still fit. John - "The Hoosier Hurricane"
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ewil	Posted 11 Years Ago
Hitting on all eight cylinders Group: Forum Members Last Active: 10 Years Ago Posts: 5, Visits: 31	Hoosier Hurricane (9/1/2014) There is nothing wrong with milling for more compression. You are right, milling the block gets you more compression and better quench. If you take a lot off the block, you still need to mill something to restore intake fit. Probably better to mill the intake side of the heads and make the heads unique to that block. If you mill the intake manifold, then want to change it for something else, the new one would need milled also. If you have milled from the heads, any intake will still fit. Hmmm very very good observation about mill the admission from the head! I will do this! And what about rod push? Already heard about use some shorter... does it need some work or can i tune it by the screw? Thanks alot!!
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Ford 292 Head - Milling to Raise Compression?

Ford 292 Head - Milling to Raise Compression?

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