i tried posting this up before, but no one had anything to say about it. and i definately seek everyones approval on this. i just kept it really simple and cleaned everything up. not bad for using a dremel huh?














and NOOO i did not grind down the guides. i removed them to replace with Si Bronze as soon as i get around to it. any input would be greatly appreciated.

 

Cool....so all you need to do port and polish is s dremel tool??

I wouldn't trust myself doing it though, I'll probably mess something up.

Props to you.

 

We need to see some pictures of the bowls.... take a combustion chamber shot out of the intake ports and exhaust ports. Your short turn radius on the middle divider seems un-symetrical. Did you enlarge the bowls or just do casting cleanup?

 

awesome man, flowbench it up and see how it opens up / rpm

 

looks clean man flowbench it and post up the results

 

I can't really tell much from these pix but did you grind down the valve guides? And this **** looks little to smooth, maybe it's just me. The surface has to be fairly rought, polished surface isn't good.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ABK &raquo;</TD></TR><TR><TD CLASS="quote">I can't really tell much from these pix but did you grind down the valve guides? And this **** looks little to smooth, maybe it's just me. The surface has to be fairly rought, polished surface isn't good.</TD></TR></TABLE>

I took the valve guides out to be replaced.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by VTECommie &raquo;</TD></TR><TR><TD CLASS="quote">looks clean man flowbench it and post up the results </TD></TR></TABLE>

how much would someone charge to flowbench something like that? i really dont care too much to tell you the truth. im just sure anything is better than stock.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by theyoungone &raquo;</TD></TR><TR><TD CLASS="quote">We need to see some pictures of the bowls.... take a combustion chamber shot out of the intake ports and exhaust ports. Your short turn radius on the middle divider seems un-symetrical. Did you enlarge the bowls or just do casting cleanup? </TD></TR></TABLE>

ill get the pics on later. it was basically just a casting clean up but i polished everything up as well. i know its not perfect and symmetrical on the web and i guess i should fix that, but i really just followed the contours of the casting. and when i tried to give it a little knife edge i didnt like what i was doing so i just left it. now i know what to work on.

thanks for the help everybody.

 

Two tips i would give are to blend the seat into the throat a bit more and also to kick out the corners of the short turn a bit, the increase in volume will help slow the incoming charge and help it to navigate the turn.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Combustion Contraption &raquo;</TD></TR><TR><TD CLASS="quote">Two tips i would give are to blend the seat into the throat a bit more and also to kick out the corners of the short turn a bit, the increase in volume will help slow the incoming charge and help it to navigate the turn.</TD></TR></TABLE>

WOOOSSHH right over my head..Obviously i need to do some more reading

 

it dont look bad at all. what did you use for the polishing portion??

 

well, its not quite as mirror shiney as it looks by the way. i never went above a 120 grit. the last couple pics show the texture of the metal a little better. i think in the first pics i had just greased it up so it looks super polished.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Combustion Contraption &raquo;</TD></TR><TR><TD CLASS="quote">Two tips i would give are to blend the seat into the throat a bit more and also to kick out the corners of the short turn a bit, the increase in volume will help slow the incoming charge and help it to navigate the turn.</TD></TR></TABLE>

i have a good idea what i could do to open it up a bit more, but dont knowif i want to messs with it.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by bluedlude &raquo;</TD></TR><TR><TD CLASS="quote">
i have a good idea what i could do to open it up a bit more, but dont knowif i want to messs with it.</TD></TR></TABLE>

?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by RedEj8 &raquo;</TD></TR><TR><TD CLASS="quote">WOOOSSHH right over my head..Obviously i need to do some more reading </TD></TR></TABLE>

Missed this earlier.. Its not rocket science you just need to learn the terminology associate with the art of porting.

Dont laugh, i made this in MSPaint just now to help.

 

good work combustion contraption....you are an asset to honda-tech.

 

he is the "picasso of microsoft paint"

haha

 

sorry i took so long to get the pic. but heres the combustion chamber. im not going to deshroud it, my lack of expertise comes into play on that one, and i cant trust myself not to mess it up.

i also read from a reputable source to leave the little dips behind the seat on the exhaust side otherwise you mess up the flow characteristics, so i took that advice. in which case, i should open the short side turn up a little more if i want any good increase in flow, but its not worth the risk.




<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by bluedlude &raquo;</TD></TR><TR><TD CLASS="quote">
i have a good idea what i could do to open it up a bit more, but dont knowif i want to messs with it.</TD></TR></TABLE>

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Combustion Contraption &raquo;</TD></TR><TR><TD CLASS="quote">?</TD></TR></TABLE>



I think if i cut away there, ill just give it a bit more of a straight shot, but im lookin for some advice on that one.

 

Yeah, where you marked in the port with pink is where the material needs to be removed. Also, from the pics you've shown the bowl area looks nice. Open up the short turns a little and make sure you check the radius around the turn to see if its a smooth transition.
You should give pics lookin out the ports through the chamber. I need to see the short turn from the chamber side.

 

not bad for your first port
keep at it and you will become better at judging where to remove meterial and where not to.
your judgement seems to be on the right track.
just listen to the pros, i'm sure that they won't lead you in the wrong direction.
?? is that a h series head??

 

Those are the corners of the short turn that i was talking about.

 

you should also gasket match the ports (if you didn't aready)
i would also try to raise the ceiling alittle.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by alterdcreations &raquo;</TD></TR><TR><TD CLASS="quote">
?? is that a h series head??</TD></TR></TABLE>

sure is, part of my build ive been workin and planning on forever now.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Combustion Contraption &raquo;</TD></TR><TR><TD CLASS="quote">Those are the corners of the short turn that i was talking about.</TD></TR></TABLE>

yeah, i had the feeling thats what you meant.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by theyoungone &raquo;</TD></TR><TR><TD CLASS="quote">Yeah, where you marked in the port with pink is where the material needs to be removed. Also, from the pics you've shown the bowl area looks nice. Open up the short turns a little and make sure you check the radius around the turn to see if its a smooth transition.
You should give pics lookin out the ports through the chamber. I need to see the short turn from the chamber side.</TD></TR></TABLE>
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by alterdcreations &raquo;</TD></TR><TR><TD CLASS="quote">you should also gasket match the ports (if you didn't aready)
i would also try to raise the ceiling alittle.</TD></TR></TABLE>

ive got a lot of time free this week, so ill re work the ports and let you guys see how it went. thanks again for the help.

 

Try the corners opposite those as well also

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Combustion Contraption &raquo;</TD></TR><TR><TD CLASS="quote">
</TD></TR></TABLE>

Oh wow that really clears things up! Thanks...you learn something new everyday

 

well, i started reworking the ports today. i almost got it all finished. i went a little overboard because i wanted to try to rush it...........bad idea. i sweat for a good 10 minutes while i was fixing my mistake but it came out alright. i didnt remove too much material because im better off. ill post the pics up tomorrow. thanks everybody.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by bluedlude &raquo;</TD></TR><TR><TD CLASS="quote">well, i started reworking the ports today. i almost got it all finished. i went a little overboard because i wanted to try to rush it...........bad idea. i sweat for a good 10 minutes while i was fixing my mistake but it came out alright. i didnt remove too much material because im better off. ill post the pics up tomorrow. thanks everybody.</TD></TR></TABLE>

lol

i remember on the first set of heads i ever did, i ****** nailed an exhaust seat. I tried lapping it in like 20 times, but it just wouldnt seal. I just went back and recut the seats.