head porting opinion

[n8dsmdriven]

k... HERE is a head port job ive been messin with and i would like the sites OPINION on it.... good , bad or ulgy?
its of the exhaust, intake side and stock mani. k
than you guys,

ps. sorry if its in the wrong place...

 

[Rob10_99]

Intake looks pretty good, could use some smoothing on the surface. Don't know what happened with the caffeinated grip on the grinder on the exhaust.
Here's a tip, get some gun blue, or any type of machining dye, then trace the gasket with something sharp. That will give you a good clean line and gasket matching.

 

[mike96]

not to bad just need a little more practice. intake looks pretty good but i have a question for you. what exactly are you using to do your P+P with? looks like you are using a carbide burr to start with and a sanding drum to finish. if so be real careful with that burr, you can take a large chunk out of that head if you aren't paying attention.

what i did instead of getting machine die was just use a fat tip sharpie. basically just color in the gasket surface around the opening. put the gasket on it then use something with a sharp point or edge like a scribe or small jewelers screwdriver and trace the inside of the gasket. pull the gasket off and have at it. looks like you may have hit the gasket a little in one of those pics already.....

 

[n8dsmdriven]

^^^^^ yes ## correct and as far as that goes... is there anything else i can use.. i know there is stone type but after one blew apart on me i decide to just carbite it and be careful thanks tho

 

[mike96]

if you are using something large like a rotozip or an actual air die grinder then you should probably invest in an actual port and polish kit from summit or some other shop. they are only about $50 and they come in really handy, they can be used on a number of things other than just P+P. if you are using a dremal then unfortunately you are kind of limited, although if you are resourcefull you could probably figure out a way to make a P+P kit work with a dremal. wont be easy thou. i would stay away from the stones especially when using them on aluminum they tend to clog quickly and need to be cleaned often.

 

[99gst_racer]

Is the exhaust side port-matched to the gasket and manifold, or is there just material removed?

 

[n8dsmdriven]

Is the exhaust side port-matched to the gasket and manifold, or is there just material removed?

yea it is matched up...

a ended up smoothing out the exhaust ports quite a bit so it a little smoother

 

[Rob10_99]

Any pics of the exhaust side to redeem yourself =P

Someone asked if you were using air or dremel, with the size of those shavings in one of the pics I would assume air tool. Pics of the tools your using?
How much did they clog up on you throughout this whole job?

 

[99gst_racer]

It just didn't look like it in the second picture - that's why I asked.


Here's a few pictures of the gasket match port job that Street & Strip did on my head.

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[n8dsmdriven]

its a air tool and ill have pics by the end of the week its up at the shop getting a valve job and a deep clean..

the tools were a jet , brand straight and also a angle die grinders with 3 diff bits and sizes... a tree style and a round and a mini straight alum, bits, nothing clogged but the the sand paper trees.... of course with it being alum. its just the nature of the beast...

stoked to get it back asap... ill post pics soon

 

[Clutch GSX]

It may be a little too late to tell you this but you want the exhaust ports a little smaller than the exhaust manifold ports and the intake ports a little bigger than the intake mani ports. If you're porting your manifolds and you haven't started yet make sure you measure that out. Ports look good from what I can tell. It's hard to tell in pictures though. You're ports dont have to be any where near as smooth as 99gst racer's. Thats all for show. The end of the ports are less important. If you really want to go for performance you need to do some bowl work. Make sure the transition from the valve seat to the bowl is smooth. There is also a small bump in the bowl that you can grind down. Unfortunately you should have done this before the VJ because if you touch the seats you will need to get a new VJ.