boring and milling

[Mike]

i know about pnp and what not, but wat does boring and milling constist of?

[irishone]

milling the head is to shave metal off to raise compression. boring has to do with the cylinder walls and is more of a v8 thing unless you sleeve. i'll let other elaborate.

[KillerCam282]

Neither is recommended for the F22. Resleeve always seems to be the best choice on honda blocks. As for milling the head, do not get greedy with it.

[Dirty Harry]

You can bore the cylinders on ANY engine, regardless of how many of them there are. The only thing that matters is if there's going to be enough metal left over when you're done. As AcclipseH23 said, the F22 doesn't have any to spare in its stock sleeves, so...hello Darton.

[Mike]

well im swaping to an h22 ..........but i wasnt really lookin to do it i just wanted to find out wat it ment

[HondaFan81]

You can bore the cylinders on ANY engine, regardless of how many of them there are. The only thing that matters is if there's going to be enough metal left over when you're done. As AcclipseH23 said, the F22 doesn't have any to spare in its stock sleeves, so...hello Darton.

You can bore F22s to 86mm, which would reduce the cylinder sleeves by 0.5" per side or leave you with approx. 2.5mm thick sleeves. Arias makes a 86mm off-shelf piston and on the westcoast it's common knowledge.

Sometimes milling is needed to resurface a head depending on how bad the mating surface is, not just for a bump in compression.

[Dirty Harry]

Interesting, didn't know that...I'd still be leary of that though. I'd choose to just get aftermarket sleeves instead of playing with the stockers like that.

[HondaFan81]

Interesting, didn't know that...I'd still be leary of that though. I'd choose to just get aftermarket sleeves instead of playing with the stockers like that.

I'm going 86mm bore on my F22 allmotor build up. I think the F22 needs more credit than people tend to give it. Many haven't even cared to get into it and just install swaps or do basic bolt-ons, never progressing any further. IMO, people tend to dog this engine without giving it a chance, then claim it isn't worth sh*t when they don't know themselves. How can you when you don't explore it?

[alb_accord]

i have no idea about boring so i won't say anyting about it.
everytime someone does a head gasket they take the head to a machine shop to clean the surface/mill the head.
most people have taken this further. i have asked around and talked to some people who work in a speed shop and or machine shop and they all agree.
u should mill the head to .45 on the f22 to be on the safe side. it will raise the compresing by hmmmm well u do the math. u can mill the head more but u will be in uncharted territory.

[d112crzy]

.45"? damn, that a little bit too much there. maybe u meant .045"? but that would raise it over 9.5:1, since .030 raises it to about ~9.2, but yea, u do the math if ur really interested, cuz if u really want to do this, then u should take the time to figure out how much of a bump ur gona get with any given amount of material shaven off.

[TÜNE.FREE]

seriously.. hey cisco, i started my F22 buil;d up, me and u were talking about it awhile ago, i dont know if u remember or not, anyways, i am ganna run stock pistons and shave the head .065 and the reason for this is A, compression and B, it will put me where i need to be for the 282 regrind.. but again..
since this build up is a very high compression build up i need to find 10.8:1 compression pistons (so my compression will be around 11.8:1 or so) that way i can really make that cam use its potential, and i am tuning on Uberdata so i dont think ill have any problems... alright im out.. but ya, on the setup, run like .060 or less because the real way compression should be gained is through pistons.... so u call it but that is the safer way.. peace-

[Dirty Harry]

I'm going 86mm bore on my F22 allmotor build up. I think the F22 needs more credit than people tend to give it. Many haven't even cared to get into it and just install swaps or do basic bolt-ons, never progressing any further. IMO, people tend to dog this engine without giving it a chance, then claim it isn't worth sh*t when they don't know themselves. How can you when you don't explore it?

That's not what I said. What I said, is that I, personally, would not feel comfortable boring the stock F22 sleeves (especially if I was going to put any significant amount power on it) and would rather go for aftermarket sleeves.

[90AccordEXR]

u should mill the head to .45 on the f22 to be on the safe side. it will raise the compresing by hmmmm well u do the math.

how do you do the math? anyone have a useful website to help with this??

[d112crzy]

if u get confused on the part where he got 59.91cc, dont wrry, i did too, but he did something wrong, it should be diff.

http://honda-tech.com/zerothread?id=438456

[HondaFan81]

if u get confused on the part where he got 59.91cc, dont wrry, i did too, but he did something wrong, it should be diff.

http://honda-tech.com/zerothread?id=438456

our F22 stock heads are 50.5 cc...so if you mill the head, you would have less volume, not more...which would slightly raise your compression