[4Door]

what is a G23/22..?

 

[mitchwbr]

^^f23/f22 block with h22/h23 head

 

[FarmerD]

Coulda picked up a complete H22 for $120 from the junk yard this last weekend. If I wanted DOHC and VTEC, I just might have. But NEIN!!!

 

[FarmerD]

SOHC is just so f'n sexy...

(holy jesus ISO much? lol wtf)

 

[mitchwbr]

Looks good!!!!!

You might have mentioned this but I didnt see it on your first page of the build thread what pistons will you be going with?

 

[FarmerD]

Stock pistons on stock rods.

 

[mitchwbr]

Can I ask what you think your static compression will be with the head mill also??

 

[FarmerD]

Covered it a few times, but depending how much I remove it changes.

My goal is about 10:1 CR. 89 octane friendly and DD-able, and still able to make some good power.

 

[HiProfile]

Coulda picked up a complete H22 for $120 from the junk yard

Wow, I can't even find another F22 around here for under $350. I need to find a local place that lets me pull it myself.

 

[FarmerD]

50% off sale, gotta love em.

 

[FarmerD]

Well I felt bored so I decided to rip the head off!

Had to be quiet, its late.. lol. Use the speed handle and put in work!

The combustion chamber quench pads are pretty close to flush with the head, different than I was expecting. .060" might be a stretch. We will see.

(on a side note, this head has a really nice CC.)

Cam out and ready to send over to Geoff @ Colt cams!

Crusty as fuck! lol

But VERY minor ridge at the top of the sleeves. Should be ok to run as is, but I might re-ring it. Havent decided yet...

Coolant system is very clean. No corrosion.

 

[atheworld0]

Since your in it so far you might as well spend the extra 150 and put new rings and bearings in it for longer life.

 

[turboprelude95]

Rock assumability has those dumb o-rings, make sure to buy new ones!

 

[FarmerD]

Since your in it so far you might as well spend the extra 150 and put new rings and bearings in it for longer life.

It would probably be even less than that. I might do it. Still debating.

If I order my mounts to the USA, I will probably add some rings and bearings to that as well. Might as well.

Rock assumability has those dumb o-rings, make sure to buy new ones!

Oh yeah man. Totally. Got a full gasket set thats going to get used really well.








ALSO, FWIW, my F22A6 came with a 5 layer head gasket. So, doing the math, just swapping out to a 3 layer should net me approx .3CR increase! Nice!!

So .018" at the gasket, and how ever much I mill off... lets say .060", I would be about 10.3:1 CR. Not too shabby. Not too shabby at all. Maybe I should incline deck the head? That sounds like it could work. More space on the exhaust side anyways!

 

[HiProfile]

Trust me, there will be more than enough exhaust space. The exhaust flange is set back almost 2" from where a B-series flange ends, and it's also angled UP instead of down like a B or D-series head.

BTW the 8.8:1CR is determined with a 0.026" 3-layer HG, so it should only be around 10.1:1 at most. It may be a bit less since you'll be cutting into the quench pads at that height. You really don't want to though, since the F22 pistons sit 0.002" out of the deck from the factory. Your 3-layer with a 0.060" decking will have the pistons kissing the head at idle. 0.050" is the most I'd deck the motor, which would be around 9.9:1 with your 0.018" HG.

 

[the hoove]

I know that you can make awesome power with a great cam, headwork and tuning on stock comp but I'm going f23 so I can do drop in k20 pistons without a major bore job. Frankenstein here I come. I'm glad to see one of these torn down so I know what to expect! Props danz!

 

[FarmerD]

Trust me, there will be more than enough exhaust space. The exhaust flange is set back almost 2" from where a B-series flange ends, and it's also angled UP instead of down like a B or D-series head.

BTW the 8.8:1CR is determined with a 0.026" 3-layer HG, so it should only be around 10.1:1 at most. It may be a bit less since you'll be cutting into the quench pads at that height. You really don't want to though, since the F22 pistons sit 0.002" out of the deck from the factory. Your 3-layer with a 0.060" decking will have the pistons kissing the head at idle. 0.050" is the most I'd deck the motor, which would be around 9.9:1 with your 0.018" HG.

Ah man you are making a huge amount of assumptions and if there is one thing I know is the best advice ever, its to think outside the box!

One thing to mention is the zeal comp calculator is not accurate for this engine.

Re: exhaust... i was referring to actually changing the angle at which the head will rest on the block, changing the valve angles, etc.


Re: Pistons kissing the head at idle. No they wont, unless they do it on a stock engine? Which they dont. The pistons dont go inside of the CC, they cant fit. So a stock F22 with a .027" head gasket would essentially have exactly the same absolute piston to head clearance as if I milled the head completely flat.

:bigok:

Also, not sure what .018" head gasket you are talking about?

 

[FarmerD]

I know that you can make awesome power with a great cam, headwork and tuning on stock comp but I'm going f23 so I can do drop in k20 pistons without a major bore job. Frankenstein here I come. I'm glad to see one of these torn down so I know what to expect! Props danz!

Stock comp is 8.8:1 on this engine, mine will be about 10:1. Just that alone would net about 20whp @ 7000rpm, or more. Plus the cam, head work, header, exhaust, intake swap, oh yeah itll be pretty potent.

 

[Paterico]

Something about SOHC NO-TEC makes my balls wet. Looking good dude, that thing is gonna be fun!

The head and deck design looks pretty similar to an A6

 

[mitchwbr]

Lovin every minute of this sweet, cheap, sleeper a6 head... do continue