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12-07-2010
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#1 |
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Join Date: Nov 2010
Location: Cedar Hill, Texas
Posts: 154
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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?
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[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] |
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12-07-2010
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#2 |
 
Join Date: Mar 2007
Location: Crystal Lake, IL
Posts: 7,194
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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).
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LGAFF 90 #966-150K miles-sold 92 #234-sold 1987 Callaway TT #17 1991 ZR-1 #1359 |
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12-07-2010
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#3 |
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Join Date: Mar 2007
Location: Crystal Lake, IL
Posts: 7,194
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Re: Extrude Honing?
Are you sure yours isn't ported? (by looking at mods)
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LGAFF 90 #966-150K miles-sold 92 #234-sold 1987 Callaway TT #17 1991 ZR-1 #1359 |
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12-07-2010
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#4 | |
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Join Date: Nov 2010
Location: Cedar Hill, Texas
Posts: 154
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Re: Extrude Honing?
Quote:
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[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] |
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12-07-2010
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#5 |
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Join Date: Mar 2007
Location: Crystal Lake, IL
Posts: 7,194
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Re: Extrude Honing?
If its extrude honed you can crack the TB and see inside is smooth as glass
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LGAFF 90 #966-150K miles-sold 92 #234-sold 1987 Callaway TT #17 1991 ZR-1 #1359 |
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12-07-2010
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#6 |
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Join Date: May 2007
Location: Chicagoland, IL
Posts: 9,708
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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.
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12-07-2010
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#7 | |
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Join Date: Nov 2010
Location: Cedar Hill, Texas
Posts: 154
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Re: Extrude Honing?
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 ! 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 
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[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] |
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12-07-2010
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#8 |
Join Date: May 2005
Location: Leesburg, VA
Posts: 2,713
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Re: Extrude Honing?
Talk to Scott, hiznhrz. His car had EH heads, I/Hs, and plenum.
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Bob Saveland Former owner of #2517 [IMG]http://a.random-image.net/aurora40/vette.jpg[/img] |
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12-08-2010
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#9 |
  
Join Date: Jun 2005
Location: pittsburgh
Posts: 4,632
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Re: Extrude Honing?
seems like a lot of money for not much gain
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It's not the car, it's the people - Doug Johnson 90 r/r "KEYS ON" nick named "T.L.B" |
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12-08-2010
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#10 |
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Join Date: Jan 2004
Location: Portland, OR
Posts: 1,057
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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.
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Robert ZR-1 Net Registry Oregon State Director 91 ZR-1 #431 Black/Black LPE 368 |
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