The damage

4valvegt · April 23rd, 2011, 12:34 PM

mfj · April 23rd, 2011, 12:58 PM

Ouch. Looks like it ran too lean.

4valvegt · April 23rd, 2011, 01:00 PM

Originally Posted by mfj

Ouch. Looks like it ran too lean.

Lol was def a tuning issue detonation kicked the shit out of her, no damage on any of the other pistons.

sixtang · April 23rd, 2011, 01:00 PM

+1 mfj

4valvegt · April 23rd, 2011, 01:03 PM

At least the block is ok, I dont have the money to build it now but im definetly going to save up for a set of manley rods and a set of forged pistons. Should I keep them flat tops and low boost or drop the compression and boost the shit out of it? lol

SWEET2KSTANG · April 23rd, 2011, 01:28 PM

up to you really and what your plans are.

vita · April 23rd, 2011, 02:55 PM

is that a camaro i see up there?

4valvegt · April 23rd, 2011, 03:26 PM

Originally Posted by vita

is that a camaro i see up there?

Yup lol two of them, a 69 z28 rs and another 69 z28 sticking out of the paint room there.

DickH · April 23rd, 2011, 06:19 PM

Hows the cylinder wall look?

4valvegt · April 25th, 2011, 08:19 AM

Originally Posted by DickH

Hows the cylinder wall look?

Untouched i can still see the crosshatch in the cylinder, I lucked out lol.

WickedSnake00 · April 25th, 2011, 09:41 AM

I actually expected far worse. Looks like it'll be a PITA, but overall not too bad.

For pistons you could easily go with the -10/11cc dish, that should put you around 9.1:1. You're dropping a little lower, but still higher than the 03/04 motors. Might be a good compromise. It's tough finding pistons that will get you into the mid 9's CR though, the next step is usually -4/5cc which are listed for around 10:1 CR, a bit high for most boosted applications.

majorownage · April 25th, 2011, 11:26 AM

can you tell if the ring ends were butting up?

you don't want 9:1 compression...

9.5:1 at the least.

WickedSnake00 · April 25th, 2011, 12:44 PM

Originally Posted by majorownage

can you tell if the ring ends were butting up?

you don't want 9:1 compression...

9.5:1 at the least.

9.5:1 would be nice, but I haven't found any pistons with the correct dish for it. The 9.5-9.8 range would be great, but the available pistons put you a little above or below that. But there very well may be some manufacturer's making them out there.

4valvegt · April 25th, 2011, 07:49 PM

Originally Posted by WickedSnake00

I actually expected far worse. Looks like it'll be a PITA, but overall not too bad.

For pistons you could easily go with the -10/11cc dish, that should put you around 9.1:1. You're dropping a little lower, but still higher than the 03/04 motors. Might be a good compromise. It's tough finding pistons that will get you into the mid 9's CR though, the next step is usually -4/5cc which are listed for around 10:1 CR, a bit high for most boosted applications.

Isnt the 99 almost 10:1 stock with 2.8cc dish pistons?

4valvegt · April 25th, 2011, 07:54 PM

Originally Posted by majorownage

can you tell if the ring ends were butting up?

you don't want 9:1 compression...

9.5:1 at the least.

No they were fine, when i look closer at the other pistons I can see it looks like they were getting hit lightly with a ball peen hammer, it was definetly detonating I dont know why i couldnt hear or feel it maybe my exhaust is too loud lol, oh well ill build it stronger and get it right this time. I should show you a pic of a piston i have out of an 03 cobra that rings were butted up on lol, there isnt much left of it though.

4valvegt · April 25th, 2011, 08:03 PM

Idk guys getting kinda discouraged with this car, might get a new set of pistons, bearings and gaskets put it back together and sell the car. I would really like to get a new gt or nice used termi.

mfj · April 25th, 2011, 09:02 PM

Originally Posted by 4valvegt

Idk guys getting kinda discouraged with this car, might get a new set of pistons, bearings and gaskets put it back together and sell the car. I would really like to get a new gt or nice used termi.

Why are you getting discouraged? Build the motor and increase the boost and go have some fun!

WickedSnake00 · April 26th, 2011, 09:05 AM

Originally Posted by 4valvegt

Isnt the 99 almost 10:1 stock with 2.8cc dish pistons?

It has 9.85:1 CR. I couldn't find -2.8cc dish forged pistons anywhere. CR also depends on how much boost you want to push. Remember, the higher the boost and CR is, you'll have to mitigate the chance of detonation with retarded timing, higher octane, or a cooler intake charge, which is why lots of guys run E85, or methanol injection with high CR blown motors.

Plus it's not like the 03/04's have a hard time making big power with such a low CR.

Though I must admit an 11 GT is a tempting prospect...

4valvegt · April 26th, 2011, 04:17 PM

Originally Posted by mfj

Why are you getting discouraged? Build the motor and increase the boost and go have some fun!

Who knows lol my mind could change tomorrow, there was an authorized ford rebuild plaque on the side of my motor dated 10/04, looking back from when the motor was made and how many miles the car had on that date the motor had less than 20k on it. Shoulda left it alone lol too late now, funny thing with the motor I know its a teksid but there is no casting date in it at all, did someone reproduce these blocks?

4valvegt · April 26th, 2011, 05:47 PM

I bought an intercooler from derek, just gotta get an adapter.

April 23rd, 2011, 12:34 PM	#1
4valvegt Enthusiast 03 Cobra Join Date: Oct 2009 Location: Nebraska Posts: 809 iTrader: 1 reviews	The damage __________________ MM Cobra Club #86 2003 Mineral Grey Cobra 2004 True Blue F-150 FX4

April 23rd, 2011, 12:58 PM	#2
mfj Banned 2001 Cobra Join Date: Feb 2011 Location: Hot Town, AZ Posts: 416 iTrader: 0 reviews	Ouch. Looks like it ran too lean. __________________ 2001 Cobra- Stroked/Poked/Cammed/Blown 1996 Cobra- CF Clutch/STS/Lowered/CAI- otherwise stock... The daily driver... [SIZE="5"][B][COLOR="Blue"]MM Cobra Club #3.4[/COLOR][/B][/SIZE] [SIGPIC][/SIGPIC]

April 23rd, 2011, 01:00 PM	#4
sixtang Newbie 2003 Mustang 4.2L Stroker Not Raced Join Date: Apr 2011 Location: Albany NY Posts: 19 iTrader: 0 reviews	+1 mfj __________________ SIXTANG

April 23rd, 2011, 01:03 PM	#5
4valvegt Enthusiast 03 Cobra Join Date: Oct 2009 Location: Nebraska Posts: 809 iTrader: 1 reviews	At least the block is ok, I dont have the money to build it now but im definetly going to save up for a set of manley rods and a set of forged pistons. Should I keep them flat tops and low boost or drop the compression and boost the shit out of it? lol __________________ MM Cobra Club #86 2003 Mineral Grey Cobra 2004 True Blue F-150 FX4

April 23rd, 2011, 01:28 PM	#6
SWEET2KSTANG mm's nitrous mod 2000 mustang gt 11.79@115.83 (old set up) Join Date: Oct 2006 Location: N.W. AR Posts: 12,540 iTrader: 8 reviews	up to you really and what your plans are. __________________ project warhorse under construction wagon burner under construction as well (04 lightning) being built by MP2 Performance

April 23rd, 2011, 06:19 PM	#9
DickH MM Fanatic 2003 gt 5.4 32v on the way Join Date: May 2007 Location: Omaha Posts: 4,188 iTrader: 2 reviews	Hows the cylinder wall look? __________________ 2003 Mustang gt - usual mods - slowly working on 5.4 swap 2004 srt4 - Stock DD/winter beater Click here for your tuning needs Before asking a gearing related question click THIS link and enjoy all your saved time.

April 25th, 2011, 09:41 AM	#11
WickedSnake00 MM's king of Neon's 404 - car not found 17.81@87 Join Date: Aug 2010 Location: Diesel Engine Capital of the World, Columbus, IN Posts: 7,373 iTrader: 0 reviews	I actually expected far worse. Looks like it'll be a PITA, but overall not too bad. For pistons you could easily go with the -10/11cc dish, that should put you around 9.1:1. You're dropping a little lower, but still higher than the 03/04 motors. Might be a good compromise. It's tough finding pistons that will get you into the mid 9's CR though, the next step is usually -4/5cc which are listed for around 10:1 CR, a bit high for most boosted applications. __________________ Official Secondhand Snake Build Thread Here Looks Like a Cobra, Sounds Like a Cobra, Tastes Like a Cobra, Not a Cobra. For Sale: P71 Interceptor motor

April 25th, 2011, 11:26 AM	#12
majorownage Regular Join Date: Jun 2010 Posts: 424 iTrader: 0 reviews	can you tell if the ring ends were butting up? you don't want 9:1 compression... 9.5:1 at the least. __________________ 1998 Gt full pi swap -Dead and gone 1998 Mark VIII 4.30s, 125 shot, 93 d/s-Daily Driver 1998 BAB Cobra-Project

April 25th, 2011, 08:03 PM	#16
4valvegt Enthusiast 03 Cobra Join Date: Oct 2009 Location: Nebraska Posts: 809 iTrader: 1 reviews	Idk guys getting kinda discouraged with this car, might get a new set of pistons, bearings and gaskets put it back together and sell the car. I would really like to get a new gt or nice used termi. __________________ MM Cobra Club #86 2003 Mineral Grey Cobra 2004 True Blue F-150 FX4

April 26th, 2011, 05:47 PM	#20
4valvegt Enthusiast 03 Cobra Join Date: Oct 2009 Location: Nebraska Posts: 809 iTrader: 1 reviews	I bought an intercooler from derek, just gotta get an adapter. __________________ MM Cobra Club #86 2003 Mineral Grey Cobra 2004 True Blue F-150 FX4

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