Go Back   Ford Mustang Forums > Mustang > Mustang Tech

Welcome to our Mustang forums where Mustangers come together to hang out, discuss and enjoy their favorite Mustang hobby with fellow Mustang enthusiasts. We invite everyone to read, post, and enjoy our Mustang forum as well as the many other sections of our site.

You are currently viewing our forums as a guest. By joining our community you gain access to post topics, communicate with members, upload your photos and access many other special features. Registration is fast, simple and free so why wait, join our Mustang community today! If you have any problems with registration or your account login, please contact support.

 
| Mustang Tech | Members Gallery | Member Albums | Timeslips | Kill Stories | Tech | Regional 
 

 
Unread 06-30-2007   #1 (permalink)
pimpenstang is offline Rookie

5.0L Member


Joined: Jan 2007
Posts: 14 Threads: 4
 pimpenstang's Country Flag
Austin   Minnesota
pimpenstang is on a distinguished road
Exclamation Help! 351 Windsor cam gear and distributor gear keep grindin off!

This is the second build on my 351 Windsor. It is a carburated 5.8, with performer rpm heads, 1.7 rockers, msd distributor and ignition set up, comp cams extreme energy race cam,and blah blah blah...Anyway this is the second time I have ground the gear off my distributor and cam, this time around I did put all new cam, distributor, oil pump, eveything in it, less than 50 miles on motor after dyno break in and poof!!! It started popping and there she went again!! Is the guy who built it a moron or what is going on here??? Can someone please shed some light on this???Thanks
pimpenstang is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiTweet this Post!
Sponsored Links
Advertisement
 
Unread 06-30-2007   #2 (permalink)
jgard07 is offline GT Member

S197 Member


Joined: Apr 2007
Posts: 1,159 Threads: 96
 jgard07's Country Flag  View jgard07's 15 photos
Eastern   Pennsylvania
jgard07 is on a distinguished road
Default

What type of cam have you been running, cast flat tappet or steel roller? And what type of distributor gear, iron or bronze? Sounds like you're having a problem with incompatable materials.
__________________
07 GT premium in Grabber Orange. 5spd. manual w/ a few bolt-ons.
jgard07 is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiTweet this Post!
Unread 06-30-2007   #3 (permalink)
pimpenstang is offline Rookie

5.0L Member


Joined: Jan 2007
Posts: 14 Threads: 4
 pimpenstang's Country Flag
Austin   Minnesota
pimpenstang is on a distinguished road
Default

I am running a hydrolic flat tappet cam and the distributor had a steel gear on it
pimpenstang is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiTweet this Post!
Unread 07-05-2007   #4 (permalink)
The Greek is offline MACH I Member

Classic Member
5.0L Member


Joined: Nov 2006
Posts: 3,177 Threads: 1
 The Greek's Country Flag
Jacksonville   Florida
The Greek is on a distinguished road
Default

Can you see if there is a wear pattern on the distributor gear or is it too far gone? The wear pattern should be approximately centered on the gear. The dist. gear may have been installed on the dist. shaft in the wrong position.

There is also a conflict in the material this gear is made of. For a flat tappet cam the dist. gear should be made of either cast iron or bronze and not the hardened steel required for a roller cam. Some people also use the bronze gear on roller cams, but this isn't an issue here. ---Chuck
The Greek is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiTweet this Post!
Unread 07-08-2007   #5 (permalink)
pimpenstang is offline Rookie

5.0L Member


Joined: Jan 2007
Posts: 14 Threads: 4
 pimpenstang's Country Flag
Austin   Minnesota
pimpenstang is on a distinguished road
Angry

I messed up we had a steel gear the first time this happened to the motor this time we had a cast iron gear on there.

We also called the msd tech line they claim that we MUST have too much oil pressure...well thats funny because we are running a complete stock oil pump and when we had it dyno tested all our oil pressure was perfect, not at all on the high side.
The way the gears look like they are hitting is that the angles between the gear on the cam and the distributor are different.
pimpenstang is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiTweet this Post!
Unread 07-10-2007   #6 (permalink)
The Greek is offline MACH I Member

Classic Member
5.0L Member


Joined: Nov 2006
Posts: 3,177 Threads: 1
 The Greek's Country Flag
Jacksonville   Florida
The Greek is on a distinguished road
Default

From what you say the dist. gear is installed upside down. Is the roll pin that secures the dist. gear on top of the gear?
The Greek is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiTweet this Post!
Unread 09-04-2007   #7 (permalink)
pimpenstang is offline Rookie

5.0L Member


Joined: Jan 2007
Posts: 14 Threads: 4
 pimpenstang's Country Flag
Austin   Minnesota
pimpenstang is on a distinguished road
Default

the gear was installed properly. It was brand new. We figure we found the trouble though. We decided after all the bs to tear it apart ourselves pulled the timing chain cover off and the cam bolt fell out and had about three threads left on it.Beautiful, huh? Well we figure either mr builder boy didnt tighten it or he "forgot" to put lock tight on it. Needless to say he replaced everything out of his own pocket
pimpenstang is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiTweet this Post!
Unread 09-06-2007   #8 (permalink)
The Greek is offline MACH I Member

Classic Member
5.0L Member


Joined: Nov 2006
Posts: 3,177 Threads: 1
 The Greek's Country Flag
Jacksonville   Florida
The Greek is on a distinguished road
Default

Thanks for the update. ---Chuck
The Greek is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiTweet this Post!
Unread 09-06-2007   #9 (permalink)
TheBarberShop is offline Apprentice

Classic Member


Joined: Feb 2006
Posts: 68 Threads: 6
 TheBarberShop's Country Flag  View TheBarberShop's HomePage
Arlington   Texas
TheBarberShop is on a distinguished road
Default

Was gonna tell you to check cam end play for a "walking" cam before I saw your update!

Out of the bad distributor gear complaints I see i'd say 95% are caused by improper cam installations. Dist gears are much weaker than the cam gear -- and thank goodness, it's easier to pull a distributor! They make newer dist gears with silicon/bronze alloys, etc, but they're not a solution, more of a band-aid fix.
TheBarberShop is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiTweet this Post!
Unread 09-23-2010   #10 (permalink)
ralc is offline Rookie


Joined: Sep 2010
Posts: 4 Threads: 0
 ralc's Country Flag
Davidson   North Carolina
ralc is on a distinguished road
Default MSD distributor problems

I had 2 problems with an MSD distributor.
The first problem was where the shaft is cut down below the gear for the oil pump drive. There was a .060" extended below the gear. I didn't know any better and pit it in. It bound up in the block and sheared the gear. I sent it back to MSD and they sent me a new distributor. This 1 had the bottom of the gear flush with the shaft cut. I put it in, snugged it down and started to set the timing when the distributor spun. I figured i just didn't have it tight enough but as I tried to tighten it down, it was not seating it against the block. Took it out and the bottom of the gear looked scraped. Pulled it out out and took it to an ignition shop. They put it in a bare block and showed me that the gear was installed too far down the shaft. from the distributor housing where it contacts the block to the bottom of the gear, it was 4.095. Said it should be 4.031-4.038. They also said there should be a minimum of .020" between the housing and the shim/collar. They also showed me a new MSD gear and a Ford Motorsport gear The MSD gear had the roll pin hole in the wrong location. They installed the Motorsport gear and it works great.
ralc is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiTweet this Post!
Sponsored Links
Advertisement
 
 



Thread Tools



Mustang Photos
Mustang Links    Top Sites    RSS    Link To Us    Add to Favorites    Archive    Terms of Use    Site Rules    Privacy    Contact    Sponsors    Advertise   
AllFordMustangs is not affiliated with or endorsed by Ford Motor Company. ©Copyright 2002-2011 All Auto Enthusiasts Network

Search Engine Friendly URLs by vBSEO 3.5.2

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172