Extrude Honing? - ZR-1 Net Registry Forums

Nacho_ZR1 · 12-07-2010

What are ya'lls opinions on extrude honing? I see alot of intakes are ported by hand but won't extrude honing provide a more consistent and powerful result?

LGAFF · 12-07-2010

My intake was extrude honed, was only 34mm......I opened it to 36MM and put down 391rwhp with no tune

Might as well pack that intake an send it to Crystal Lake, Il for the most hp per $ around(shameless plug).

LGAFF · 12-07-2010

Are you sure yours isn't ported? (by looking at mods)

Nacho_ZR1 · 12-07-2010

Quote:

Originally Posted by LGAFF

My intake was extrude honed, was only 34mm......I opened it to 36MM and put down 391rwhp with no tune

Might as well pack that intake an send it to Crystal Lake, Il for the most hp per $ around(shameless plug).

Wow that's like almost 80hp with the honing

! Did you have any other mods to achieve that number? Also, how long did it take for the porting work to get done and is the pricing similar to what a port done by hand costs?

Back in the old days, extrude honing was the way to go. Intakes and heads were extruded and the results were always spectacular - at least on Mustangs. Just not sure why I haven't really seen it mentioned here with regards to the ZR-1...Seems logical to me

Nacho_ZR1 · 12-07-2010

Quote:

Originally Posted by LGAFF

Are you sure yours isn't ported? (by looking at mods)

Well not quite sure how to tell? I'll see if I can get a pic of the intake when I get home Thursday night (working out of town) and post it here. I would assume the insides would be smooth as glass???

LGAFF · 12-07-2010

If its extrude honed you can crack the TB and see inside is smooth as glass

XfireZ51 · 12-07-2010

I used EH on the Xfire manifold of my 84. I think it worked there but it wasn't cheap. I understand the people at EH are reluctant to do LT5 plenums because runners may separate from plenum due to high pressure.

Aurora40 · 12-07-2010

Talk to Scott, hiznhrz. His car had EH heads, I/Hs, and plenum.

Kevin · 12-08-2010

seems like a lot of money for not much gain

Locobob · 12-08-2010

The Extrude Hone process has both positive and negative aspects.
It would work well inside the plenum which is hard to access by hand.
Smooth as glass... well it looks nice but a high polish is not helpful in promoting intake air flow.
Extrude Hone can not target specific areas - like injector bosses for example.
Bottom line: generally you'll get better results with properly done hand porting.

12-07-2010	#1
Nacho_ZR1 Join Date: Nov 2010 Location: Cedar Hill, Texas Posts: 154	Extrude Honing? What are ya'lls opinions on extrude honing? I see alot of intakes are ported by hand but won't extrude honing provide a more consistent and powerful result? __________________ [B][U]---SOLD BUT NOT FORGOTTEN---[/U][/B] [SIZE="1"][SIZE="2"]1992 ZR-1 #483 [COLOR="DarkRed"]Dark Red Metallic[/COLOR] [U][B]Mods[/B][/U] -Jeal headers -Stock exhaust with X-pipe -4.30 Gears -Corey Henderson tune -375 RWHP[/SIZE][/SIZE]

12-07-2010	#2
LGAFF Join Date: Mar 2007 Location: Crystal Lake, IL Posts: 7,194	Re: Extrude Honing? My intake was extrude honed, was only 34mm......I opened it to 36MM and put down 391rwhp with no tune Might as well pack that intake an send it to Crystal Lake, Il for the most hp per $ around(shameless plug). __________________ LGAFF 90 #966-150K miles-sold 92 #234-sold 1987 Callaway TT #17 1991 ZR-1 #1359

12-07-2010	#3
LGAFF Join Date: Mar 2007 Location: Crystal Lake, IL Posts: 7,194	Re: Extrude Honing? Are you sure yours isn't ported? (by looking at mods) __________________ LGAFF 90 #966-150K miles-sold 92 #234-sold 1987 Callaway TT #17 1991 ZR-1 #1359

12-07-2010	#6
LGAFF Join Date: Mar 2007 Location: Crystal Lake, IL Posts: 7,194	Re: Extrude Honing? If its extrude honed you can crack the TB and see inside is smooth as glass __________________ LGAFF 90 #966-150K miles-sold 92 #234-sold 1987 Callaway TT #17 1991 ZR-1 #1359

12-07-2010	#7
XfireZ51 Join Date: May 2007 Location: Chicagoland, IL Posts: 9,708	Re: Extrude Honing? I used EH on the Xfire manifold of my 84. I think it worked there but it wasn't cheap. I understand the people at EH are reluctant to do LT5 plenums because runners may separate from plenum due to high pressure.

12-07-2010	#8
Aurora40 Join Date: May 2005 Location: Leesburg, VA Posts: 2,713	Re: Extrude Honing? Talk to Scott, hiznhrz. His car had EH heads, I/Hs, and plenum. __________________ Bob Saveland Former owner of #2517 [IMG]http://a.random-image.net/aurora40/vette.jpg[/img]

12-08-2010	#9
Kevin Join Date: Jun 2005 Location: pittsburgh Posts: 4,632	Re: Extrude Honing? seems like a lot of money for not much gain __________________ It's not the car, it's the people - Doug Johnson 90 r/r "KEYS ON" nick named "T.L.B"

12-08-2010	#10
Locobob Join Date: Jan 2004 Location: Portland, OR Posts: 1,057	Re: Extrude Honing? The Extrude Hone process has both positive and negative aspects. It would work well inside the plenum which is hard to access by hand. Smooth as glass... well it looks nice but a high polish is not helpful in promoting intake air flow. Extrude Hone can not target specific areas - like injector bosses for example. Bottom line: generally you'll get better results with properly done hand porting. __________________ Robert ZR-1 Net Registry Oregon State Director 91 ZR-1 #431 Black/Black LPE 368