Cam Sproket Bolts - 2003-04 Mach 1 Registry Owners Club

icutice2 · 08-09-2008, 08:15 PM

I have now broken my second cam sproket bolt. The first one went thru my valve cover and broke the power steering bracket too.... After talking to ARP about getting thier bolts, come to find out the Mach 1 was given a 10mm bolt where all others since 2001 are 12mm. They can barley handle the stock torque. My second bolt just sheered off and and spun the cam. So if you are adding HP and get the chance change the bolts, very expensive to keep fixing this and retiming motor

blown03Mach1 · 08-09-2008, 08:56 PM

"987RWHP AND 971 RWTQ"

No wonder you are breaking those bolts!!!

Sweet azz setup you have there

icutice2 · 08-10-2008, 06:07 PM

Quote:

Originally Posted by blown03Mach1

"987RWHP AND 971 RWTQ"

No wonder you are breaking those bolts!!!

Sweet azz setup you have there

Thank you, however was told that this didnt happen, ohhh well horsepower headache

1bad4vgt · 08-10-2008, 06:48 PM

so you are making 987 HP on stock cams? To correct what you said or was told incorrectly. All the stock cams after 01 (2V & 4V) use 10mm bolts. All aftermarket cams use the 12mm bolt.

icutice2 · 08-10-2008, 07:17 PM

Quote:

Originally Posted by 1bad4vgt

so you are making 987 HP on stock cams? To correct what you said or was told incorrectly. All the stock cams after 01 (2V & 4V) use 10mm bolts. All aftermarket cams use the 12mm bolt.

Yes making that on stock cams. Was told by MMR and ARP that they stopped useing the 10mm bolts after 01, due to breaking. The mach still uses them I dont know why...Hey I am learning after I break something new each time

icutice2 · 08-10-2008, 08:08 PM

Quote:

Originally Posted by 1bad4vgt

so you are making 987 HP on stock cams? To correct what you said or was told incorrectly. All the stock cams after 01 (2V & 4V) use 10mm bolts. All aftermarket cams use the 12mm bolt.

Yes making that on stock cams. Was told by MMR and ARP that they stopped useing the 10mm bolts after 01, due to breaking. The mach still uses them I dont know why...Hey I am learning after I break something new each time

bdmach1 · 08-11-2008, 11:56 AM

Whose bolt are you breaking??? the torque to yield bolt from ford??

DSG Mach ONE · 08-30-2008, 09:10 AM

Quote:

Originally Posted by icutice2

Yes making that on stock cams. Was told by MMR and ARP that they stopped useing the 10mm bolts after 01, due to breaking. The mach still uses them I dont know why...Hey I am learning after I break something new each time

edit...

need to go look at my cams...

icutice2 · 08-31-2008, 05:23 PM

Quote:

Originally Posted by bdmach1

Whose bolt are you breaking??? the torque to yield bolt from ford??

yes they are. got arp now. bent 13 valves this yime

RandyStinchcomb · 09-02-2008, 10:26 AM

Quote:

Originally Posted by icutice2

Was told by MMR and ARP that they stopped useing the 10mm bolts after 01, due to breaking. The mach still uses them I dont know why:

that's just bad info, as stated above all the factory cams us the smaller 10mm bolt and aftermarket cams require the older style 12mm bolt, which is the same part # as the crank bolt.....now, are you using the correct washer under the bolt head?

08-09-2008, 08:15 PM	#1
icutice2 twinturbomach Join Date: Jul 2007 Location: lavergne tennessee Posts: 341	Cam Sproket Bolts I have now broken my second cam sproket bolt. The first one went thru my valve cover and broke the power steering bracket too.... After talking to ARP about getting thier bolts, come to find out the Mach 1 was given a 10mm bolt where all others since 2001 are 12mm. They can barley handle the stock torque. My second bolt just sheered off and and spun the cam. So if you are adding HP and get the chance change the bolts, very expensive to keep fixing this and retiming motor __________________ TWIN HP 57MM TURBOS. BOSS BLOCK 5.5 L STROKED ENGINE. FULL BALANCED AND BLUE PRINTED, FULL RACE HEADS AND STAGE III CUSTOM GRIND CAMS TKO 600 ROAD RACE TRANNY TWIN DISC CLUTCH RETURN FUEL SYSTEM 80LBS INJECTORS FULL RACE SUSPENSION 18LBS DUAL WASTEGATE SPRINGS TWIN 62MM THROTTLE BODY KENNY BELL BAP AND BAS MAFIA BIG AIR CHIP AND MORE FUN STUFF PUMP GAS 776RWHP 16LBS BOOST C-16 RACE 981 RWHP 20LBS BOOST I RACE CROTCH ROCKETS FOR FUN

08-09-2008, 08:56 PM	#2
blown03Mach1 8LB YNER Join Date: Mar 2005 Location: Tampa Posts: 5,661	Re: Cam Sproket Bolts "987RWHP AND 971 RWTQ" No wonder you are breaking those bolts!!! Sweet azz setup you have there __________________ Just because you're winnin' Don't mean you're the lucky ones TR 2003 (Jezebel) sold Mar 12...

08-10-2008, 06:48 PM	#4
1bad4vgt Registered User Join Date: Oct 2006 Location: Huntingtown, MD Posts: 92	Re: Cam Sproket Bolts so you are making 987 HP on stock cams? To correct what you said or was told incorrectly. All the stock cams after 01 (2V & 4V) use 10mm bolts. All aftermarket cams use the 12mm bolt. __________________ 02 GT Built stroker 4V W/F1A procharger T56 6 speed 10.61 @ 131

08-11-2008, 11:56 AM	#7
bdmach1 Registered User Join Date: Jan 2005 Location: akron,ohio Posts: 335	Re: Cam Sproket Bolts Whose bolt are you breaking??? the torque to yield bolt from ford??

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