'Race' Porting SOHC

03blackrt · Post by **03blackrt** » Tue Jan 08, 2008 7:02 pm

I'm getting very close to being done now. I have just a little more rough sanding of the #4 intake port. Then it'll be on to finish sanding and polishing of the ports.

^ Intakes; a mild gasket match I'm doing on the right vs the 'race' porting on the left.

quicksilvr · Post by **quicksilvr** » Tue Jan 08, 2008 11:52 pm

So you're doing two heads right now? How long do you think it will have taken to do one head completely, start to finish? And more questions. You're just using an air powered die grinder and a Standard Abrasives kit? I'm curious which scrolls you have found to be the best to work with. I'm seriously considering doing my own...but I'm like you and I will take forever to make it perfect.

03blackrt · Post by **03blackrt** » Wed Jan 09, 2008 12:29 am

Yeah, I am doing two heads right now

. I'd think I could do an entire head in 10-12 hours from start to finish, but I'm taken alot of time to make the shape of the ports near perfect, IMO.

I'm using an air grinder w/ SA sanding rolls and cross-buff pads. Although I also have a 3/4" sanding drum bit thingy that mounts sanding drums on a rubber arbur; this can only be used on the exhaust throat/bowl (only once opened up with the carbide) and the entire intake port, it's too big to fit inside the exit of the exhaust. Carbide bits for rough cutting, 40/50 grit sanding drums/rolls for rough sanding and 80/120 for finish sanding. Coarse and fine cross-buff pads for finishing.

The 40/50 git sanding is definitly what I'm using alot of.

Tonight I also relized that one of the exhaust valve seats are fubar'd from a bad valve job, causing one of the exhaust valves to sit about 1/16" lower than the rest.

kevo · Post by **kevo** » Mon Jan 21, 2008 2:49 pm

Just a question. I can get a first gen head for cheap. Would it work fine on my 03 without issues?

hul kogan · Post by **hul kogan** » Mon Jan 21, 2008 4:17 pm

nice work so far. i am looking forward to checking out the final product and seeing results.

03blackrt · Post by **03blackrt** » Mon Jan 21, 2008 4:25 pm

kevo wrote:Just a question. I can get a first gen head for cheap. Would it work fine on my 03 without issues?

1gn heads work fine but you will need to block off the EGR.

kevo · Post by **kevo** » Tue Jan 22, 2008 8:44 pm

03blackrt wrote:
kevo wrote:Just a question. I can get a first gen head for cheap. Would it work fine on my 03 without issues?
1gn heads work fine but you will need to block off the EGR.

thanks! I knew about the EGR, i was just a little afraid that there might have been something else to it.

03blackrt · Post by **03blackrt** » Fri Jan 25, 2008 4:59 pm

I forgot to add that '95 heads have differant sized bolts for the valve cover.

http://www.babcox.com/editorial/ar/eb80234.htm

jprince · Post by **jprince** » Fri Jan 25, 2008 8:48 pm

hey just want to compliment u on your job. My only question is where the valves come throu the head, the little humps of 'material, you shaved them right down.. is that ok?
________
SUZUKI GSX650F

Hudson_Neon · Post by **Hudson_Neon** » Fri Jan 25, 2008 8:50 pm

i mentioned that before... there MIGHT be the slightest bit of valve wobble, but that's a might

gilly02le · Post by **gilly02le** » Sun Jan 27, 2008 12:16 pm

are you referring to the valve guides?

Hudson_Neon · Post by **Hudson_Neon** » Sun Jan 27, 2008 2:33 pm

yeah, the valve guide comes up through that "hump" of material

supertrick_05 · Post by **supertrick_05** » Sun Jan 27, 2008 4:36 pm

HURRY UP MAN! I wana see what this head puts out!

Hudson_Neon · Post by **Hudson_Neon** » Sun Jan 27, 2008 5:08 pm

me too... so i have an idea on what to expect

03blackrt · Post by **03blackrt** » Sun Jan 27, 2008 11:28 pm

As of right now the project is on hold. I've got other things to sort out first.

2002TuRboNeoN · Post by **2002TuRboNeoN** » Mon Jan 28, 2008 12:41 pm

hopefully well see what the head produces hp wise in february???