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01-28-2008, 02:03 PM
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CC Member
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Join Date: Mar 2006
Cobra Make, Engine: BDR354/FMS392
Posts: 382
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Not Ranked
We used a cutting tool like the one shown. We made ours out of an old valve. But, without pulling the engine, how do you balance the engine afterwards? Chances are, you will throw the balance of the engine off unless you can take the same amount of material out of each piston.
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01-28-2008, 02:12 PM
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CC Member
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Join Date: May 2000
Location: Northern VA,
VA
Cobra Make, Engine: Classic Roadsters
Posts: 2,765
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Not Ranked
Quote:
Originally Posted by Mark Brye
But, without pulling the engine, how do you balance the engine afterwards? Chances are, you will throw the balance of the engine off unless you can take the same amount of material out of each piston.
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And each crank counterweight!
.
__________________
LIFE IS TOO SHORT TO WORRY ABOUT GOOD GAS MILEAGE
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Utinam logica falsa tuam philosophiam totam suffodiant!
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01-29-2008, 07:14 PM
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Senior Club Cobra Member
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Join Date: Jul 2001
Location: Carrollton,
TX
Cobra Make, Engine: JBL now SOLD
Posts: 1,735
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Not Ranked
Well the piston and pin likely weigh over 600 grams.......the material removed may weigh as much as one gram? Will this be noticed? Doesn't seem like it.
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6th generation Texan....
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01-29-2008, 10:45 PM
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Senior Club Cobra Member
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Join Date: Feb 2006
Location: McKinney,
TX
Cobra Make, Engine: SPF #867 gone....
Posts: 1,272
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Not Ranked
Oh bloody hell,
you talking about me grinding on the top of my pistons?
I'm thinking I'd rather borrow sleep aids from Heath Ledger.
Perfect storm for me to really F up an engine, royally.
I can't believe nobody out there has plopped these heads on this motor!
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MadMiles442 
She said, "The only thing I'll ask of you, you gotta promise not to stop when I say when..."
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01-30-2008, 07:26 AM
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CC Member
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Join Date: Oct 2001
Location: Long Island,
NY
Cobra Make, Engine: ERA fia, 400 c.i. W
Posts: 215
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Not Ranked
Ok, I put them on my Ford Motorsport 392 about four years ago. They went on with no modiification at all and ran great. I was prepared to relieve the intake valve pockets with a 2.08" cutter, it was not necessary.
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01-30-2008, 08:17 AM
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Senior Club Cobra Member
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Join Date: Jul 2001
Location: Carrollton,
TX
Cobra Make, Engine: JBL now SOLD
Posts: 1,735
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Not Ranked
Hey I never said YOU should be responsible for using it!
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6th generation Texan....
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01-30-2008, 07:39 PM
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Senior Club Cobra Member
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Join Date: Feb 2006
Location: McKinney,
TX
Cobra Make, Engine: SPF #867 gone....
Posts: 1,272
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Not Ranked
Quote:
Originally Posted by ERA-FIA
Ok, I put them on my Ford Motorsport 392 about four years ago. They went on with no modiification at all and ran great. I was prepared to relieve the intake valve pockets with a 2.08" cutter, it was not necessary.
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Yea!!!
Thanks Joe!
__________________
MadMiles442
She said, "The only thing I'll ask of you, you gotta promise not to stop when I say when..."
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01-31-2008, 07:00 AM
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CC Member
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Join Date: Oct 2001
Location: Long Island,
NY
Cobra Make, Engine: ERA fia, 400 c.i. W
Posts: 215
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Not Ranked
Mad442
Two related issues, you will need longer pushrods, I used Manley's(sp)...and replace your intake manifold gaskets with the Ford Motorsports parts of the same number, these have the metal sandwich . Retorque the manifold A LOT until everything takes a set, a search will indicate why I say that.
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12-03-2009, 01:37 PM
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CC Member
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Join Date: Jun 2008
Location: West Suburbs of Chicago,
IL
Cobra Make, Engine: Backdraft#357, 392CI Ford Racing, 459hp, 455ft/lbs , TKO 500, 3.43 Gears, Ceramic Coated Headers, Victor Jr. 750cfm, 17in Halibrand wheels, Sterling Gray/Silver Stripes, Gray Leather, Nitto NT05
Posts: 362
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Not Ranked
Make sure you check out his post- very valuable information. Mark had to flycut the pistons. I think 2005 was the cutoff year. Please research this carefully. I have been considering the move, but until I know for sure that this is not going to be a huge project, I am loathe to start it.
( http://www.clubcobra.com/forums/show...ghlight=flycut) |
12-04-2009, 04:20 AM
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CC Member
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Join Date: May 2001
Posts: 1,330
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Not Ranked
I have a set of AFR185s to replace the GT40x heads this winter on my crate 392W. Here's the article that convinced me to do it.
Quote:
Originally Posted by ERA-FIA
.... a search will indicate why I say that.
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Can you just give us the threads link? Nobody will find it faster than you.
Last edited by TButtrick; 12-04-2009 at 04:38 AM..
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