Cylinder head intake port bump

[DESRT10]

There is a round bump in the intake, looks like there to put some metal beneath one of the rocker studs. Can you grind this down flush with the port wall without breaking through the metal? If not, how far down can you take it?


Thanks in advance

 

[rottenronnie]

There is a round bump in the intake, looks like there to put some metal beneath one of the rocker studs. Can you grind this down flush with the port wall without breaking through the metal? If not, how far down can you take it?


Thanks in advance

You DON'T want to do that...

Ronnie

 

[DESRT10]

You DON'T want to do that...

Ronnie

You are right that I don't want to break through the metal. I would imagine on someone porting out the head that they take some of the bump down. I am just smoothing the walls bit along with some basic clean up, not really changing the port dimension. It is in about the worst place it could be in the port, impeding the flow that is needed to make that dogleg. After looking over this head, I can certainly see this and many other issues the Stykers have to improve on.

Anyways, Do you think I could smooth this pimple/bump down to about half of its current height or something like that?

 

[500H V10]

You are right that I don't want to break through the metal. I would imagine on someone porting out the head that they take some of the bump down. I am just smoothing the walls bit along with some basic clean up, not really changing the port dimension. It is in about the worst place it could be in the port, impeding the flow that is needed to make that dogleg. After looking over this head, I can certainly see this and many other issues the Stykers have to improve on.

Anyways, Do you think I could smooth this pimple/bump down to about half of its current height or something like that?

You could grind it away then if it breaks through you could put epoxy on the threads of the stud and re install the stud. This is common practice in racing head prep. There is some tolerance in the wall thickness. I would try it and if needed epoxy the stud threads. If it bothers you to have such a repair then don't remove it. I have smoothed out many intake manifolds using epoxy in the threaded holes to eliminate the airflow disruption of holes not being used inside the runners.
Just my 2 cents.
500H V-10

 

[VENOMOUS1 RACING]

Yeah, but he is talking heads and not an intake? Is it the rocker stud that protrudes into the runner? What does this "bump" come from? I do agree that you can epoxy any mishap, but really need to know what's above the bump. How much area you have that can be removed is repairable or sealable if it's just a rocker stud.

 

[rottenronnie]

You are right that I don't want to break through the metal. I would imagine on someone porting out the head that they take some of the bump down. I am just smoothing the walls bit along with some basic clean up, not really changing the port dimension. It is in about the worst place it could be in the port, impeding the flow that is needed to make that dogleg. After looking over this head, I can certainly see this and many other issues the Stykers have to improve on.

Anyways, Do you think I could smooth this pimple/bump down to about half of its current height or something like that?

Sometimes removing material from where it looks like it should be removed will have a negative impact on the QUALITY of airflow.
Because Strikers aren't using an o.e.m. head design, their revised Intake location greatly improves line of site into the chamber.

Ronnie

 

[JTS VENOM PERFORMANCE]

I will say it

If you are not a very experienced porter on viper heads, you can hurt performance more than help, even light porting in the wrong area will cause detrimental effects

 

[rottenronnie]

I will say it

If you are not a very experienced porter on viper heads, you can hurt performance more than help, even light porting in the wrong area will cause detrimental effects

I thought I just said that..

 

[JTS VENOM PERFORMANCE]

I thought I just said that..

LOL you did, I think we were thinking the same thing at the same time LOLOL

 

[faslane505]

from experience from two different sets of ported heads...the bump can be removed be flush with the wall around it. im not sure why it is there, but removing it will not expose any hole. it seems as though its just extra bit of casting material.

 

[DESRT10]

Sometimes removing material from where it looks like it should be removed will have a negative impact on the QUALITY of airflow.
Because Strikers aren't using an o.e.m. head design, their revised Intake location greatly improves line of site into the chamber.

Ronnie

True, that is why I am seeking more knowledge on this.

Has anyone who has ported these heads and flowed them, noticed whether removing this bump has helped or hurt flow??

Looking at it further, I don't think it was put there for any aerodynamic flow function, but just to create more metal thickness where the stud meets the intake wall.

 

[DESRT10]

You could grind it away then if it breaks through you could put epoxy on the threads of the stud and re install the stud. This is common practice in racing head prep. There is some tolerance in the wall thickness. I would try it and if needed epoxy the stud threads. If it bothers you to have such a repair then don't remove it. I have smoothed out many intake manifolds using epoxy in the threaded holes to eliminate the airflow disruption of holes not being used inside the runners.
Just my 2 cents.
500H V-10

Thanks, yes, I was thinking of that too. On my bike dragrace heads, there were oxygen injector ports. You could thead them from the top of the head, put a threaded aluminum rod down there, lock in in, and grind the wall perfectly smooth. With the stud needing that hole, the epoxy option is not bad, but yeah, I would rather not epoxy if can get away without it.

Thanks again.

 

[DESRT10]

from experience from two different sets of ported heads...the bump can be removed be flush with the wall around it. im not sure why it is there, but removing it will not expose any hole. it seems as though its just extra bit of casting material.

Thank you.

 

[VENOMOUS1 RACING]

Thank you.

Exactly, I understand Strikers badass heads and all but successful porting is quite often achieved with stock heads that protrusion could only hinder performane by causing turbulence and a general disruption/routing around in the airpath.

I will be massagin the stock heads myself and a lil bumpstick. Hopefully Mr.Good can prove his magic again!

 

[Troy's QC SRT]

Exactly, I understand Strikers badass heads and all but successful porting is quite often achieved with stock heads that protrusion could only hinder performane by causing turbulence and a general disruption/routing around in the airpath.

I will be massagin the stock heads myself and a lil bumpstick. Hopefully Mr.Good can prove his magic again!

I have a pair of oem heads to sell u incase that doesn't go so well

 

[ARRESTmeRed04]

i'm not 100% sure what "hump" your talking about but i know some heads i've seen had "humps" that were there to increase the velocity of the air flow in the port i'd be careful if i was you, i've seen ported heads and cam trucks put out the same numbers if not a little lower than a stock head/cam truck on teh same dyno the same day...