Rhythm Racer

i searched around for more info on this but the search yielded no results. i want to shave my head to bump compression up. i want higher compression cause im getting a crane stage 2 cam soon. how much can/should i shave off the head?

thanx in advance

cccya

use some cream and a good bic and you should be all set

j/k free bump

SloCivicHMM

Yeah I been thinking of doing this too.......

I have a DOHC ZC and I'll be sending some cams to a shop to get regrinded and I'd like to mill the head a bit and get a diff headgasket bump that compression a bit and see what happens...hmmmmmm

Any imput would be great!!! Bizzzump!!

Rhythm Racer

thanks for the bumps...one more wont hurt

spoondek

dont do it. if you want to raise comp then just get a thinner head gasket. i did it to mine and the engine just was never the same.

99blackcivicSi

i wouldn't really recommend doing it because that is metal you can't put BACK! just take your factory head gasket and take the top OR the bottom layer off of it. And if you do decide to mill the head make sure a reputable shop does this because if they "measure" wrong and they take too much off then you are screwed because that metal can't be put back like i said so with that in mind think about it. Just my .02 any one can disagree with me just my opinion

Rhythm Racer

Where can i find a thinner head gasket!!

hayabusa160

mugen makes one but only for b series

Rhythm Racer

anyone make one for a d16y8

VisualEcstasy

in my searches i have not found any headgaskets for the d16y8 that are thinner than the stock one. if i remember correctly the headgasket is three pieces. as mentioned before just remove on of the layers, either top OR bottom. not sure how much higher your compression is gonna get, but it would certainly raise the compression.

if you are honestly considering building a high compression Dseries then you need to read this post:
https://honda-tech.com/zerothread?id=335078
there is some really good information in there. good luck.

Formula 1

yea i suggest the thinner head gasket....unless u wanna go wit a wild setup...shaving the head right requires alot of research and time to calculate numbers i got a link if you would really like to see what kinda stuff u gonan have to find out

vtekthis

Not to steal you thread but i want to now how much of a compression raise does the thinner head gasket give you? and mugen makes one?

Formula 1

bout .6 i think thats a guess and mugen spoon and toda make em

clm

You could try making one, too. Get a sheet of gasket material and trace an OE-spec gasket.

civicrights

If you want to shave your head you are going to want to take a casting (I think thats what its called it might be casting?) of your combustion camber. You can find out how to do it by searching it on the net. What it is, is a casting of your combution chamber when your piston is at TDC. Once you have the casting you can use a caliper to determine how much you can remove from the head to manipulate the combustion chamber. This is also the time to figure out how much you may want to take of the deck. While your doing this also rotate the motor over and see what kind of clearance your valves have, especialy with an aftermarket cam. When taking these measurments do it with a used (comppressed) head gasket. Wonce the compression is raised you should have a large increase in power because of the aftermarket cam. Hope this helps.

civicrights

Dont forget when you shave the head or the deck you will need to ajust the cam timing.

Formula 1

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by civicrights &raquo;</TD></TR><TR><TD CLASS="quote">If you want to shave your head you are going to want to take a casting (I think thats what its called it might be casting?) of your combustion camber. You can find out how to do it by searching it on the net. What it is, is a casting of your combution chamber when your piston is at TDC. Once you have the casting you can use a caliper to determine how much you can remove from the head to manipulate the combustion chamber. This is also the time to figure out how much you may want to take of the deck. While your doing this also rotate the motor over and see what kind of clearance your valves have, especialy with an aftermarket cam. When taking these measurments do it with a used (comppressed) head gasket. Wonce the compression is raised you should have a large increase in power because of the aftermarket cam. Hope this helps.</TD></TR></TABLE>

i think its called claying the motor not sure...but yes lots of work to fig.out exactly how much

Damon

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SikCivic &raquo;</TD></TR><TR><TD CLASS="quote">bout .6 i think thats a guess and mugen spoon and toda make em</TD></TR></TABLE>Spoon is discontinued, Toda's are stock spec and lower (will not raise), and Mugen makes a one layer gasket that is good for raising by about .2 - .3 compression points.

USDMMARK

man not to bust your thread up or leave it with a bad taste in your mouth, but man this seems like a lot of work to get a few ponys, i mean really waht's .2-.3 gonna get you at the track, and if you shave your head or deck, youll never get that back, i would just put a thinner head gasket if you want it that bad, but this is all your decision, no matter what you do keep us up to date

peace
mark

Formula 1

http://www.c-speedracing.com/h...c.php
thats good for b-series just to get an idea what u might get and volume sizes

http://www.acura-integra.net/w...g.htm
usful info on milling or shaving the head

99blackcivicSi

I do believe that D series head gaskets have layers to them so just pull the bottom layer off of your head gasket BOOM bumped up compression.

Mr Hammond

You can shave your head up to the factory serivce limit. I don't recomend over .030". Spoon's 1-layer is discontinured, their 2-layer is not. Mugen's is also 2-layer. Both gaskets will give you about a .3 (.28) bump in compression. I personally am not a fan of either but doing both will give you a decent bump. I woudl just do it right and change out your pistons, flat valves give you a couple tenths as well. If you mill you head, don't forget cam timing. You will need to readjust.

kommon_sense

Buy a spare head, clean it up, get it milled, and stick a decent cam in it. If you are happy with it and want to stick with it, sell your original head. Don't screw around with taking layers out of headgaskets. Also, a good shop should be able to help you with determine how much to mill and what your resulting compression will be.