anyone heard about grooving the head?

[Anubis_4_99]

well recently my little bro mentioned something in passing that he's going to try on his car since it is in pieces, and i did a few hours of reading on it last night and it sounds like a possibly promising mod if your already into the motor.

was curious if anyone has heard of it or personally done it? and if its a possibility for a dsm (4G or 420)?

thoughts? opinions? from what I've read it is supposed to increase efficiency, torque, and mpg.

here is the thread link where i found most of the info i read on it

Somender singhs groove theory tried. - Turbobricks Forums

on the first page in the thread is the link to the originator of the groove theory's webpage.

im in no way shape or form telling you to pull your motor apart and do it, nor am i saying its the most amazing thing ever, so don't flame me, i was just curious as to other peoples thoughts.

 

[Shake_Zulla]

well recently my little bro mentioned something in passing that he's going to try on his car since it is in pieces, and i did a few hours of reading on it last night and it sounds like a possibly promising mod if your already into the motor.

was curious if anyone has heard of it or personally done it? and if its a possibility for a dsm (4G or 420)?

thoughts? opinions? from what I've read it is supposed to increase efficiency, torque, and mpg.

here is the thread link where i found most of the info i read on it

Somender singhs groove theory tried. - Turbobricks Forums

on the first page in the thread is the link to the originator of the groove theory's webpage.

im in no way shape or form telling you to pull your motor apart and do it, nor am i saying its the most amazing thing ever, so don't flame me, i was just curious as to other peoples thoughts.

Personally I'm not a big fan of cutting a line into my sweet Lotus inspired head so I would have to see some serious data telling me it was worth it. But... thats just me

 

[DSM_love_GST]

If someone will show me where to cut, ill do it with my spare!

 

[Anubis_4_99]

I'm going to wait to see my brothers results before i think about doing it, but I've been reading on it since yesterday and it has at least peaked my interest. searched and didn't see anything mentioned here so figured I'd toss it out there to see what others thoughts on it were.

*edit*

gst, from what i've read its all about the main cut directly aimed at the spark plug, to help encourage a more complete burn, the secondary or other cuts are just to help it along and completely being tested on guesses by the other contributors of the thread.

very interesting idea huh?

 

[VelocitàPaola]

Wow, this is a really old topic... I definitely remember seeing it discussed before, but I couldn't tell you when.

I agree with Jared; I'd need some substantial data to convince me this idea holds any weight. I didn't really see any persuasive data on that website, just sketchy phrases like "The Answer My Friend...".

 

[Anubis_4_99]

i searched every term i could think of here and never found anything posted here. just figured it would be a thread for an interesting discussion.

if my brothers experience is positive i'll get a spare head and try it myself as well and post up my personal experience, but that will be a ways in the future.

 

[bullettdsm]

IMO, it is a legitmate form of removing quench areas (well really extending the flame to reach poor quench areas). BUT with our heads, I don't see any benefit from doing it (or at least an extremely small gain if any). IMO our head and piston design uses the combustion chamber area very effectively. I see more downside than upside in this. You stand a better chance of losing power by altering the combustion chamber (and possibly making hotspots) than any gains you may make.

Also, I think it would be hard to quantify any gains or losses.

MB

 

[Anubis_4_99]

thanks for the input! exactly what i was looking for, info based upon what i hope to be fairly decent knowledge of our motors design

it has been noted on the thread i linked that this is NOT a power mod, but more of a drive-ability and efficiency mod. so i agree with that part, however i don't know much about how our engines are designed, hence why i posted this and asked for peoples input on the viability of this mod for the dsm crowd.

IMO, it is a legitmate form of removing quench areas (well really extending the flame to reach poor quench areas). BUT with our heads, I don't see any benefit from doing it (or at least an extremely small gain if any). IMO our head and piston design uses the combustion chamber area very effectively. I see more downside than upside in this. You stand a better chance of losing power by altering the combustion chamber (and possibly making hotspots) than any gains you may make.

Also, I think it would be hard to quantify any gains or losses.

MB

 

[primestick]

To OP read this site SOMENDER-SINGH.com - 2005 The year in (grooved) pictures

My thoughts are that they are doing this to allow for a better fuel burn on a non hemi-spherical head...
Our 420a heads dont have flat spots that would keep the fuel from getting spread across the piston as they are hemi-spherical heads.

 

[bullettdsm]

My thoughts are that they are doing this to allow for a better fuel burn on a non hemi-spherical head...
Our 420a heads dont have flat spots that would keep the fuel from getting spread across the piston as they are hemi-spherical heads.

You go gurl !

Yup and yup on the reasoning. Then Anubis, if you thought about the intent of the grooves, you could put that together with why someone might do this for fuel savings; more efficient fuel burn. I just tend to look at stuff from a racer's point of view

And yes, I do have fairly decent knowledge of our motors design

MB

 

[Anubis_4_99]

yep that's what i was looking for, wasn't sure if it was a viable mod for us because i haven't seen a head off of a dsm yet, and only pics i could find were freshly machined so couldn't tell if we had the same issue to deal with or not, so i wasn't sure if it was possible for our motors.

thanks for the info guys.