Is there such a thing as "port job done wrong?"

[FullthrottleGST]

The thing is, the previous owner of my car gave me an extra head with the intake side ported. I sent it to this guy and he now tells me the port job was done wrong and it doesn't match up to the manifold and its leaking. I've never seen how a "good" port job looks like so I wouldn't know if its good or bad. It looked fine to me.

Now I'm thinking, how can it be that bad. I mean as long as the port on the head isn't overwhelmingly big, that it should fit. Maybe he needs a new gasket? or port-match his intake manifold too?

 

[oldman]

The thing is, the previous owner of my car gave me an extra head with the intake side ported. I sent it to this guy and he now tells me the port job was done wrong and it doesn't match up to the manifold and its leaking. I've never seen how a "good" port job looks like so I wouldn't know if its good or bad. It looked fine to me.

Now I'm thinking, how can it be that bad. I mean as long as the port on the head isn't overwhelmingly big, that it should fit. Maybe he needs a new gasket? or port-match his intake manifold too?

I bought a ported and polished 2g o2 housing from one of the members here. Not only it was a 1g, you guys would laugh so hard if you see the port job on this thing. I still have it and plan to drive to the guy's house one day and return it throught his windshield. Some people just have no clue.

 

[blcknspo0ln]

oldman- you're a cranky ass old man for saying/planning to do that :laugh:

anyway, my definition of a port job dont "wrong" is if you run your fingers on the surface, you can feel the ridges and steps.. this will cause a little air flow turbulence. second, if it is ported waaaaaaay too big. in cases of , say, an o2 housing the actual housing itself may be ported too much that the sidewall is too thin and will crack.

other than that i'd have to see a pic to pass judgement

 

[oldman]

oldman- you're a cranky ass old man for saying/planning to do that :laugh:

anyway, my definition of a port job dont "wrong" is if you run your fingers on the surface, you can feel the ridges and steps.. this will cause a little air flow turbulence. second, if it is ported waaaaaaay too big. in cases of , say, an o2 housing the actual housing itself may be ported too much that the sidewall is too thin and will crack.

other than that i'd have to see a pic to pass judgement

Just trying to scare him a little, I know he's probably reading this.

 

[heavyD]

The thing is, the previous owner of my car gave me an extra head with the intake side ported. I sent it to this guy and he now tells me the port job was done wrong and it doesn't match up to the manifold and its leaking. I've never seen how a "good" port job looks like so I wouldn't know if its good or bad. It looked fine to me.

Now I'm thinking, how can it be that bad. I mean as long as the port on the head isn't overwhelmingly big, that it should fit. Maybe he needs a new gasket? or port-match his intake manifold too?

The reason he gave you the extra head is because it was probably worthless. If done wrong you can add turbulence, lose velocity, etc. Usually if something comes free, there is a catch.

 

[FullthrottleGST]

oldman- you're a cranky ass old man for saying/planning to do that :laugh:

anyway, my definition of a port job dont "wrong" is if you run your fingers on the surface, you can feel the ridges and steps.. this will cause a little air flow turbulence. second, if it is ported waaaaaaay too big. in cases of , say, an o2 housing the actual housing itself may be ported too much that the sidewall is too thin and will crack.

other than that i'd have to see a pic to pass judgement

it doesnt have ridges or steps, but its not like polished or anything. i read somewhere, its good if the intake side isnt super smooth. ok say it is ported too big, then the only thing he can do is to portmatch the intake manifold right? i should tell him to take some pics of it and post it.

i traded him a safc for it and now he wants to trade back. really dont want to go through the hassle again.

 

[4pistons]

Why did he say it's bad? Where is it leaking?

Is it a 2G head ported to the intake port size of a 1G? If so, then the 2G intake gasket and manifold ports won't line up. But that is not too big a deal if the head port is larger than the intake port. It's way bad if it's the other way around.

You could just pick up a 1G intake so it lines up properly.

Rick - '91 GSX

 

[FullthrottleGST]

Why did he say it's bad? Where is it leaking?

Is it a 2G head ported to the intake port size of a 1G? If so, then the 2G intake gasket and manifold ports won't line up. But that is not too big a deal if the head port is larger than the intake port. It's way bad if it's the other way around.

You could just pick up a 1G intake so it lines up properly.

Rick - '91 GSX

he said its bad because it doesnt line up with manifold. the port job itself isnt as bad as it was made to be. anyhow, that seems to add up. ill tell him to look into that. thanks

 

[ted_the_mexican]

well heres the deal
we traded safc2 for the head which was supposed to have been ported and polished

for one the intake side of the manifold has been ported un evenly and there are quite a few spots that look like a die grinder slipped and gashed the inside of the runner. basically the bottom of the runner is pitted in and the job is rough. It honestly looks like something that was done in an hour...

i'm not unhappy with GST hes been really good about resolving the problem. Honestly i would do business with him again if presented the chance bc of the fast shipping and quik email replies...

my main problem is that the manifold doesnt line up...what i mean is the port is larger than the manifold itself and so it will leak. Even if i swap it to a 1g mani i think the indentions will cause leaking. And if not the fact that the intake side is ported so deep and flat it looks like it will reduce velocity and cause turbulence. Ive read a lot of the other posts on this and from what ive read getting that side too flat can be bad, which looks like what happend.

heres the plan after resolving this

im just going to go with a 1g head and forget about a ported 2g

comments are appreciated thanks

 

[ted_the_mexican]

thanks for not responding to calls ims or pms shows me what kind of person you are

 

[4pistons]

Who are you talking about??????

Rick - '91 GSX

 

[oldman]

Who are you talking about??????

Rick - '91 GSX

It took me a while to figure it out, he's the person who bought the head.

 

[turbohcar]

It sounds to me that somone uneducated ported that head. Not to say they don't get an A for effort but if you dont' have any experience porting heads, don't try it unless it's a junk practice head or you've got someone who's been doing it for a long time standing behind you. If you don't go about it properly, you can hinder performance by creating dead spots and valleys in the ports (or in your case burrs and notches) which hinder performance. Porting cylinder heads is something that comes with experience and not just reading articles on the net. Gasket matching the intake manifold would not help seal the intake to the head. If he says it leaks, then it's either a gasket issue or the ports were made too big.

 

[2g_spyderturbo]

since this is about bad porting jobs iv got one,a buddy of mine just bought a brand new 14b turbo from the dealership (i dont know why?)and he started to port it the same day which was the first time he has ever done this and never seen one done befor and i told him i would do it for him he didnt listen because he was to stubern to wait for me to get off work so after work i went their and i saw it and i almost hit the floor laughing because he ported it about 5 and almost 6 inches over what you are supposed too.

 

[temfate]

So let me try to get this, someone is upset because he didn't understand the the intake needs to be port matched to a ported head???

I can see the problem if the runner is scared up, but the other issue is just ignorance of the buyer.

 

[Corbic]

Never buy or trade with out imags.

 

[ted_the_mexican]

ok the guy i was talking to was the guy i traded the head to
we had been PMing and emailing and he had said he was going to send some money so that he could keep the safc2 bc originally we had talked about shipping everything back
well i said thta was fine with me and told him my paypal and everything

he told me he was going to send on payday which was at the end of the week and that was the last i have heard from him, so basically he stiffed me for it, so i was kinda shocked that he was so dihonest so i thought that at least he might get an email that this thread had a reply

its ok though bc i have already bought a 1g head setup had it all hottanked, cleaned, decked, and a 3 angle valve job done on it, so i should be fine now.

the prob with the head was a horrible port job that i was told was a) professional b)"ported and polished" guess that will teach me about trusting people on here
there was a pic but it was a shot of the whole head not the intake ports up close...

oh well maybe i'll practice on the head or something......

 

[Defiant]

That's enough crap.