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Author
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Topic: found out where my boost went
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99gt-UJSTLST
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Member # 584
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posted
 
 
well I finally took my 99gt apart
and I found why I was only makeing 8psi instead off 18
well I took the heads off my motor and the passanger side had the valves bent again ![[Mad]](mad.gif)
fuck
I thought my timing was off but afthere checkin it out, I found it was fine
I guess I just had way to much lift on my cam's and when it was reved to high RPMs the valves kissed the pistons
Oh well back to the drawing board
Im just goin to dump a stock motor in it
meen while I'll save some cash to buy a 5.4l DOHC motor with a automatic
I guess ill part out the 4.6 block and heads
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SOUTH BAY STANGS
MINOR BOLT ON'S
www.southbaystangs.com
Posts: 2558 | From: SAN JOSE CA | Registered: Nov 2001
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Teddy Tiger
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Member # 2473
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posted
Why not just stroke your 4.6? That's all the real difference between it and a 5.4 ![[Smile]](smile.gif)
Nick
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2008 Mustang GT 'Premium'
Vista Blue Metallic
Interior Upgrade, Comfort Group
Charcoal Leather Interior
Shaker 500 Stereo
Posts: 167 | From: Lafayette, California | Registered: Feb 2003
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302n/a
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Member # 1465
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posted
that's a common problem on our 46ers fompk cams heard nothing but horror stories.The only safe cams are shm or houston perf
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Raiders A's Warriors Sharks
Posts: 2605 | Registered: Jun 2002
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99gt-UJSTLST
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Member # 584
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posted
yea im thinking if I get cams im goin to buy freshly made cams fuck this reground BS
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SOUTH BAY STANGS
MINOR BOLT ON'S
www.southbaystangs.com
Posts: 2558 | From: SAN JOSE CA | Registered: Nov 2001
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Synergy Motorsports
New Member
Member # 2846
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posted
The SHM cams are good because they are not reground. I have had no problems with those yet. You could always stroke your 281 to make it a 300. Thats what we did with a Saleen. Also, as for over reving that motor will cause the rockers to come off. Thats most likely why you bent the valves. The rockers are way too touchy in this motor.
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Synergy Motorsports
For all your mustang, Camaro/Firebird and corvette Needs. Located in San Jose.
408-592-0404
Posts: 4 | From: Union City | Registered: May 2003
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99gt-UJSTLST
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Member # 584
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posted
quote:
Originally posted by Synergy Motorsports:
The SHM cams are good because they are not reground. I have had no problems with those yet. You could always stroke your 281 to make it a 300. Thats what we did with a Saleen. Also, as for over reving that motor will cause the rockers to come off. Thats most likely why you bent the valves. The rockers are way too touchy in this motor.
the motor was never over revd hell it was only reved to 5600 rpms on the dynoe
yea i could make it a 300 but their is no replacement for displacement
[ May 27, 2003, 03:07 PM: Message edited by: 99gt-UJSTLST ]
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SOUTH BAY STANGS
MINOR BOLT ON'S
www.southbaystangs.com
Posts: 2558 | From: SAN JOSE CA | Registered: Nov 2001
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Synergy Motorsports
New Member
Member # 2846
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posted
There is also a place in Redwood City that does alot of 4.6 cams all day long. They are called Elgin Cams. Look em up. Good people over there.
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Synergy Motorsports
For all your mustang, Camaro/Firebird and corvette Needs. Located in San Jose.
408-592-0404
Posts: 4 | From: Union City | Registered: May 2003
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