Port and polish heads

[bamfdavid]

Well I've came across a set if heads that are good and low mileage. I come from the Small block Chevy drag world. But I was wondering if i were to have the heads port and polished if there would be any noticeable difference it if this was even possible on these heads. Appreciate any help

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[strokin'patty]

Ive read through some threads on here where guys were saying and dyno sheets were showing that it did indeed make a difference. Also I've seen dyno sheets with guys running my same set up just with head work done and thier numbers are well in the 500HP range. As with any motor the better is breathes the more power it makes.

[bamfdavid]

That's what i was thinking. I've just never seen any actual results on these motors. Appreciate the help.

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[roaddogjru]

Call Carson Stauffer Diesel performance @ 570 539-2241. Carson did mine and a modified H2e and 250/100 injectors plus much more. Without the port and polish job I could not have benefitted nearly as much.

[08powersmoke08]

I would be very careful who you have port and polish your heads, on a diesel there is a swirl on the intake ports that helps with the atomization of fuel, very few people can do this and it actually yield positive results.

[the trav]

Originally Posted by 08powersmoke08

I would be very careful who you have port and polish your heads, on a diesel there is a swirl on the intake ports that helps with the atomization of fuel, very few people can do this and it actually yield positive results.

That is for gassers. our diesels are direct injection, so it doesnt make a bit of difference how smoothly the air enters the cylinder. basically, you have almost 3000psi behind the fuel injector, the fuel is going to atomize however it wants.

[08powersmoke08]

Originally Posted by the trav

That is for gassers. our diesels are direct injection, so it doesnt make a bit of difference how smoothly the air enters the cylinder. basically, you have almost 3000psi behind the fuel injector, the fuel is going to atomize however it wants.

I was referring to the way the air enters the cylinder and creates a swirl effect inside the cylinder, and yes it does matter if you want the fuel to atomize more efficiently and completely giving you more power.

[ModernDieselLegion]

Originally Posted by 08powersmoke08

I was referring to the way the air enters the cylinder and creates a swirl effect inside the cylinder, and yes it does matter if you want the fuel to atomize more efficiently and completely giving you more power.

i'm staring at the many many sets of 7.3 heads in our shop and don't see a swirl chief. sounds like the fuel tornado!

[NoRalPh]

I would think 3,000psi is about all the atomization that fuel is going to need and a bit of turbulence from the incoming air wouldn't be making any significant increase...

[desertdeer]

the turbo completely overrides any swirl effect the heads could have. and the hpop can pump up to 4000 psi. amplified by the intensifier piston in the injector 6 or 7 times depending on the injector so fuel is injected at 20,000 plus psi. thats all the atomization you could ask for.

i installed a set of ported and polished heads for a customer along with headers and bellowed pipes. biggest thing i noticed was drop in egt's. we didnt do a before and after dyno to show hp gain