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09-08-2011, 06:35 AM
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CC Member
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Join Date: Aug 2000
Location: Chicago,
IL
Cobra Make, Engine: ERA 454 S.O.
Posts: 1,684
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Not Ranked
Minimum Air Cleaner to Hood Clearance?
I have a 14" air cleaner on my ERA. What do you guys think minimal clearance should be between the lid of the air cleaner and the bottom of the hood. I'm thinking of purchasing a 1/2" carb. spacer.
__________________
Jeff
“If you can make black marks on a straight from the time you turn out of a corner until the braking point of the next turn, then you have enough horsepower.”
Mark Donahue
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09-08-2011, 07:11 AM
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Senior Club Cobra Member
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Join Date: Jan 2005
Location: VALLEY FORGE,
PA
Cobra Make, Engine: SUPERFORMANCE w DOUG MEYER ENGINE
Posts: 1,958
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Not Ranked
If the hood closes.....you are good to go 
Mine rubs the side of the scoop slightly |
09-08-2011, 07:20 AM
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CC Member
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Join Date: Aug 2000
Location: Chicago,
IL
Cobra Make, Engine: ERA 454 S.O.
Posts: 1,684
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Not Ranked
Quote:
Originally Posted by JBCOBRA
If the hood closes.....you are good to go
Mine rubs the side of the scoop slightly |
Serious, no paint rub marks?
__________________
Jeff
“If you can make black marks on a straight from the time you turn out of a corner until the braking point of the next turn, then you have enough horsepower.”
Mark Donahue
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09-08-2011, 07:27 AM
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Senior Club Cobra Member
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Join Date: Jan 2005
Location: VALLEY FORGE,
PA
Cobra Make, Engine: SUPERFORMANCE w DOUG MEYER ENGINE
Posts: 1,958
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Not Ranked
Sure there is a little mark, but I am the only one who would ever notice and at least to me is no big deal, because the benefits of a phenolic far outway a tiny rub.
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09-08-2011, 07:37 AM
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CC Member
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Join Date: Jun 2008
Location: Chester Springs,
PA
Cobra Make, Engine: Kirkham 289 FIA #690, FRPP 427 Boss engine
Posts: 764
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Not Ranked
I have about 1/8" with poly mounts. No issues.
__________________
RCR GT40 SOLD to Fast 5
Kirkham #690 289 FIA
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09-08-2011, 07:58 AM
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CC Member
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Join Date: Apr 2007
Cobra Make, Engine: # 757 ERA 427 SC , 482 Al. big block
Posts: 896
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Not Ranked
I can`t run any spacer as I run the tallest filter element ( almost 3" ) I can get and also a drop base filter housing ( 14 " filter ) . I have about 1/8" clearance on the passenger side ... remember , your engine is offset to the right on a 427 . The engine wants to torque to the right anyway ..... I do get some contact on the passenger side , but only if I go WOT quickly ( on the front and back straight at VIR ) , but it`s minimal . You can reduce your filter element height , and lose some power ( probab;y won`t notice it ) and do ERA`s motor mount mod to the driver side mount to reduce motor torqueing .
Try putting some clay around the air cleaner lid , close the hood , open it and measure what it was squished down to .
Bob
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09-08-2011, 09:15 AM
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CC Member
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Join Date: Oct 2003
Posts: 4,078
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Not Ranked
Be sure to get the Xtreme top from K&N or you will have a new RPM limiter against the scoop.
__________________
Chas.
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09-08-2011, 10:17 AM
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CC Member
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Join Date: Aug 2000
Location: Chicago,
IL
Cobra Make, Engine: ERA 454 S.O.
Posts: 1,684
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Not Ranked
Quote:
Originally Posted by Bobcat
I can`t run any spacer as I run the tallest filter element ( almost 3" ) I can get and also a drop base filter housing ( 14 " filter ) . I have about 1/8" clearance on the passenger side ... remember , your engine is offset to the right on a 427 . The engine wants to torque to the right anyway ..... I do get some contact on the passenger side , but only if I go WOT quickly ( on the front and back straight at VIR ) , but it`s minimal . You can reduce your filter element height , and lose some power ( probab;y won`t notice it ) and do ERA`s motor mount mod to the driver side mount to reduce motor torqueing .
Try putting some clay around the air cleaner lid , close the hood , open it and measure what it was squished down to .
Bob
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Did the clay already, but I didn't know about the offset, thank you.
__________________
Jeff
“If you can make black marks on a straight from the time you turn out of a corner until the braking point of the next turn, then you have enough horsepower.”
Mark Donahue
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09-08-2011, 10:19 AM
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CC Member
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Join Date: Aug 2000
Location: Chicago,
IL
Cobra Make, Engine: ERA 454 S.O.
Posts: 1,684
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Not Ranked
Quote:
Originally Posted by JBCOBRA
Sure there is a little mark, but I am the only one who would ever notice and at least to me is no big deal, because the benefits of a phenolic far outway a tiny rub.
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Who says phenolic, maybe wood? 
__________________
Jeff
“If you can make black marks on a straight from the time you turn out of a corner until the braking point of the next turn, then you have enough horsepower.”
Mark Donahue
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09-12-2011, 03:20 PM
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CC Member
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Join Date: Aug 2000
Location: Chicago,
IL
Cobra Make, Engine: ERA 454 S.O.
Posts: 1,684
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Not Ranked
__________________
Jeff
“If you can make black marks on a straight from the time you turn out of a corner until the braking point of the next turn, then you have enough horsepower.”
Mark Donahue
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09-12-2011, 04:08 PM
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CC Member
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Join Date: Oct 2003
Posts: 4,078
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Not Ranked
Quote:
Originally Posted by ERA Chas
Be sure to get the Xtreme top from K&N or you will have a new RPM limiter against the scoop.
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Maybe I type in invisible ink... 
__________________
Chas.
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09-12-2011, 04:49 PM
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CC Member
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Join Date: Aug 2000
Location: Chicago,
IL
Cobra Make, Engine: ERA 454 S.O.
Posts: 1,684
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Not Ranked
Quote:
Originally Posted by ERA Chas
Maybe I type in invisible ink... |
Sorry, I would never put something that ugly on my car.
__________________
Jeff
“If you can make black marks on a straight from the time you turn out of a corner until the braking point of the next turn, then you have enough horsepower.”
Mark Donahue
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09-12-2011, 05:03 PM
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Half-Ass Member
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Join Date: Jun 2005
Cobra Make, Engine: ERA #732, 428FE (447 CID), TKO600, Solid Flat Tappet Cam, Tons of Aluminum
Posts: 22,017
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Not Ranked
Quote:
Originally Posted by Jeff Frigo
Sorry, I would never put something that ugly on my car.
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It is kind of funky looking.
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09-12-2011, 05:07 PM
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CC Member
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Join Date: Oct 2003
Posts: 4,078
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Not Ranked
So you put a wood block under your carb and tell me the open top is ugly. 
Spacers either add 6HP or cost 6HP (which you can't feel or measure unless you're running strip laps) and need to be dyno coordinated to an intake system. They are not a toy-du-jour for performance improvements. This little tinker project was stupid to start with and what I told you was to prevent what you found out.
Test it without the AC in place to see if your choice is able to help. If it picks up, then get the Xtreme top if you want power-if you're a lawn-chair guy, then forget I tried to help...
And I won't make that mistake again.
__________________
Chas.
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09-12-2011, 05:10 PM
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Half-Ass Member
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Join Date: Jun 2005
Cobra Make, Engine: ERA #732, 428FE (447 CID), TKO600, Solid Flat Tappet Cam, Tons of Aluminum
Posts: 22,017
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Not Ranked
Quote:
Originally Posted by ERA Chas
... then forget I tried to help... And I won't make that mistake again.
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Dang Chas., please let me buy you a month's supply of Zoloft.  |
09-12-2011, 05:30 PM
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CC Member
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Join Date: Oct 2003
Posts: 4,078
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Not Ranked
Quote:
Originally Posted by patrickt
Dang Chas., please let me buy you a month's supply of Zoloft. |
Ya don't have to pal-just start another air bleeds thread...
Instant catatonia.
Buy Brent a nitrided valley tray instead.
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Chas.
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09-12-2011, 05:34 PM
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Half-Ass Member
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Join Date: Jun 2005
Cobra Make, Engine: ERA #732, 428FE (447 CID), TKO600, Solid Flat Tappet Cam, Tons of Aluminum
Posts: 22,017
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Not Ranked
Quote:
Originally Posted by ERA Chas
Ya don't have to pal-just start another air bleeds thread...
Instant catatonia.
Buy Brent a nitrided valley tray instead. |
Wouldn't you feel better about yourself if you had just a little more patience with well-intentioned contributors who just happen to slight you ever so lightly?  |
09-12-2011, 05:39 PM
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CC Member
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Join Date: Oct 2003
Posts: 4,078
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Not Ranked
I though I was a well-intentioned contributor...
__________________
Chas.
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09-12-2011, 10:59 PM
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Stolen Avitar
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Join Date: Oct 2004
Location: Brunswick,
GA
Cobra Make, Engine: BDR 1311 428PI
Posts: 3,044
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Not Ranked
Quote:
Originally Posted by ERA Chas
So you put a wood block under your carb and tell me the open top is ugly. |
Ohhhh, that makes you angry? Wuss.
Quote:
Originally Posted by ERA Chas
Spacers either add 6HP or cost 6HP (which you can't feel or measure unless you're running strip laps) and need to be dyno coordinated to an intake system. They are not a toy-du-jour for performance improvements.
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Really, I take it that 6hp # is from your extensive testing? The guys doing actual testing in say "Engine Masters" competition, or NASCAR, or Trans Am, or any number of actual professionals, might have evidence to counter that sophomoric supposition.
Quote:
Originally Posted by ERA Chas
This little tinker project was stupid to start with and what I told you was to prevent what you found out.
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Denigrating comments like this are what make you such a freaking wanker. What did he find out Chas? Maybe you read some tea leaves or something and came up with something that the OP DIDN'T say.
Quote:
Originally Posted by ERA Chas
then get the Xtreme top if you want power-if you're a lawn-chair guy
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You've been through the stupid "Xtreme" filter lid discussion here before and have been told by people much more experienced and knowledgeable than you just how little (if at all) this POS works. And yet you have the unmitigated gall to spout "if you want power" at the OP who has only 1/16" clearance over the top of his AC? These piles of dung show negligible results when run on cars with wide open scoops and dynos with perfect air and yet you have somehow miraculously surmised that this guy's tiny over filter clearance would somehow produce major power with a pile of dog doo on top?
Quote:
Originally Posted by ERA Chas
then forget I tried to help...
And I won't make that mistake again.
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Well THAT would be nice!
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09-13-2011, 12:43 AM
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CC Member
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Join Date: Aug 2000
Location: Chicago,
IL
Cobra Make, Engine: ERA 454 S.O.
Posts: 1,684
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Not Ranked
Quote:
Originally Posted by Bobcat
I can`t run any spacer as I run the tallest filter element ( almost 3" ) I can get and also a drop base filter housing ( 14 " filter ) . I have about 1/8" clearance on the passenger side ... remember , your engine is offset to the right on a 427 . The engine wants to torque to the right anyway ..... I do get some contact on the passenger side , but only if I go WOT quickly ( on the front and back straight at VIR ) , but it`s minimal . You can reduce your filter element height , and lose some power ( probab;y won`t notice it ) and do ERA`s motor mount mod to the driver side mount to reduce motor torqueing .
Try putting some clay around the air cleaner lid , close the hood , open it and measure what it was squished down to .
Bob
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I also have an ERA with a Ford cast iron 427 block, Edelbrock Performer RPM intake, and a drop base air cleaner with a 3" tall, 14" dia. filter, and a 1/2" phenolic spacer. I have 1/16" clearance, not all drop bases cleaners are the same. Go to Summit and you will see.
__________________
Jeff
“If you can make black marks on a straight from the time you turn out of a corner until the braking point of the next turn, then you have enough horsepower.”
Mark Donahue
Last edited by Jeff Frigo; 09-13-2011 at 12:49 AM..
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