Search



Go Back   MustangForums.com > Ford Mustang Tech > Classic Mustangs (Tech)
Sign in using an external account
Register Forgot Password?
Search

Classic Mustangs (Tech) Technical discussions about the Mustangs of yester-year.

Welcome to Mustang Forums!
Welcome to Mustang Forums.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, at no cost, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!


Reply
 
 
 
 
Thread Tools Search this Thread
Old 09-13-2009, 09:44 PM   #31
calfroper_06
4th Gear Member
 
calfroper_06's Avatar
 
Join Date: Jul 2008
Location: texas
Posts: 1,175
Default

no sound really sounded like it was coming from the rear. The shifter vibrated but not to bad, might be because of the poly mount.

UPDATE: SO the driveshaft was the cause of 99% of the vibration problem. We installed the 4.11s back in this evening and man what a diffrence. We got the car up to 125mph and it a a very slight steady vibration. Its livable with but were going to play alittle more with the pinion angle to see if we can get rid of it completely.

Its so much fun to drive and cruise in now, o and really fub when you smoke the tires down in third going 70....alittle scary too
This ad is not displayed to registered or logged-in members.
Register your free account today and become a member on Mustang Forums!
__________________
88 gt...17" cobras, cammed 306
calfroper_06 is offline   Reply With Quote
Old 09-13-2009, 10:44 PM   #32
Gun Jam
Moderator

 
Gun Jam's Avatar
 
Join Date: Dec 2005
Location: Hills of California
Posts: 4,341
Send a message via ICQ to Gun Jam Send a message via AIM to Gun Jam Send a message via Yahoo to Gun Jam
Default

I bet the DS is the cause of 100% of the vibration... they balanced the DS at 2500 rpm...you are currently spinning the DS at 7,000 RPM....This is rather close to the critical speed of your stock DS (the speed at which the DS grenades a take a lot with it) You may want to consider buying a DS rated for that type of speed.

http://www.streetortrack.com/Custom-...-pr-16159.html

These guys sell some that will run true past 8000 rpm....I think thats what im fixing to get.

Of course a better pinion angle can't hurt if it does just take the shims out...totally worth trying.

-Gun
__________________

Masters of Industrial Technology intelligence thats why I own guns made to drop elephants.
Gun Jam is offline   Reply With Quote
Old 09-14-2009, 04:04 AM   #33
kalli
6th Gear Member
 
Join Date: Oct 2006
Vehicle: 1964, Ford, Mustang
Location: Cork, Ireland
Posts: 6,405
Default

i'm eyeballing the denny's driveshaft for mine. you get the slipyoke there with it and that has the advantage that the whole thing will be balanced, not only the tube. further I believe that S&T will just order them off some DS crowd, where with Denny you get it straight from manufacturer, with accurate measurements needed.
I'm positive my driveshaft is off as well. I bought it 2nd hand of ebay and the old one (which had no problem) didn't fit because of the 1210 u-joint holes in the back. So I couldn't crosscheck.

Best of luck!
__________________
1964 1/2
302ci, Edelbrock RPM heads, xe268h, 650 speed demon, Hooker Long Tube headers and Flowmaster 40s
Quick Performance Racing 9" rear, Moser axles, 3.5:1 trac-loc from FRPP and T5 transmission.
CSRP disc brakes front and FRPP discs back.
http://www.gascc.ie


Last edited by kalli; 09-14-2009 at 04:07 AM.
kalli is offline   Reply With Quote
Old 09-14-2009, 10:54 AM   #34
Gun Jam
Moderator

 
Gun Jam's Avatar
 
Join Date: Dec 2005
Location: Hills of California
Posts: 4,341
Send a message via ICQ to Gun Jam Send a message via AIM to Gun Jam Send a message via Yahoo to Gun Jam
Default

I might get it from Denny as well....I haven't decided yet..

-Gun
__________________

Masters of Industrial Technology intelligence thats why I own guns made to drop elephants.
Gun Jam is offline   Reply With Quote
Old 09-14-2009, 12:18 PM   #35
kalli
6th Gear Member
 
Join Date: Oct 2006
Vehicle: 1964, Ford, Mustang
Location: Cork, Ireland
Posts: 6,405
Default

Quote:
Originally Posted by Gun Jam View Post
I might get it from Denny as well....I haven't decided yet..
-Gun
check out : http://www.dennysdriveshaft.com/c124...iveshafts.html
their street rod shafts are for everything under 500HP ... usually they take 2 weeks to manufacture as they always have a huge backlog. but so far everyone seems to agree that it's well worth it
__________________
1964 1/2
302ci, Edelbrock RPM heads, xe268h, 650 speed demon, Hooker Long Tube headers and Flowmaster 40s
Quick Performance Racing 9" rear, Moser axles, 3.5:1 trac-loc from FRPP and T5 transmission.
CSRP disc brakes front and FRPP discs back.
http://www.gascc.ie

kalli is offline   Reply With Quote
Old 09-14-2009, 12:46 PM   #36
Gun Jam
Moderator

 
Gun Jam's Avatar
 
Join Date: Dec 2005
Location: Hills of California
Posts: 4,341
Send a message via ICQ to Gun Jam Send a message via AIM to Gun Jam Send a message via Yahoo to Gun Jam
Default

Ohhh that 3" Al one for 350 looks nice....The price is very competitive as well.. I think you have effective swayed my decision

-Gun
__________________

Masters of Industrial Technology intelligence thats why I own guns made to drop elephants.
Gun Jam is offline   Reply With Quote
Old 09-14-2009, 01:50 PM   #37
kalli
6th Gear Member
 
Join Date: Oct 2006
Vehicle: 1964, Ford, Mustang
Location: Cork, Ireland
Posts: 6,405
Default

Quote:
Originally Posted by Gun Jam View Post
Ohhh that 3" Al one for 350 looks nice....The price is very competitive as well.. I think you have effective swayed my decision

-Gun
ya. they have one of them with my name on it as well. comes with yoke and u-joints. can't beat that :-) best thing is you give them exact measures via their measuring charts and whatever they send you will match perfectly
__________________
1964 1/2
302ci, Edelbrock RPM heads, xe268h, 650 speed demon, Hooker Long Tube headers and Flowmaster 40s
Quick Performance Racing 9" rear, Moser axles, 3.5:1 trac-loc from FRPP and T5 transmission.
CSRP disc brakes front and FRPP discs back.
http://www.gascc.ie

kalli is offline   Reply With Quote
Old 01-17-2010, 05:56 PM   #38
calfroper_06
4th Gear Member
 
calfroper_06's Avatar
 
Join Date: Jul 2008
Location: texas
Posts: 1,175
Default

Well the vibration is back more than ever. We ended up installing a new Currie 9" with 4.11s, as well as a steel Mark williams DS thats balanced to 7,000 rpms. Got it all put in and the vibration was terrible!!!!! We noticed there was only o balance tab on the front of the DS.

Measure it with a dial indicator and it showed to be .023 off at the yok and .026 off at the center. So we packed it back up and sent it back were he charge us freight for thier mistake. Got it back and and its still the exact same off at the yoke and center of the DS. The vibration is calm anywee under 50 but at crusing speeds it like a pulsing vibrator!!! This is a big headach....
__________________
88 gt...17" cobras, cammed 306
calfroper_06 is offline   Reply With Quote
Old 01-17-2010, 07:05 PM   #39
Gun Jam
Moderator

 
Gun Jam's Avatar
 
Join Date: Dec 2005
Location: Hills of California
Posts: 4,341
Send a message via ICQ to Gun Jam Send a message via AIM to Gun Jam Send a message via Yahoo to Gun Jam
Default

so with the stock DS and 8" open rear end it was smooth to 120...right?

You got a new DS and a new rear end and now its really bad?

Where did the axles come from? Could one be bent? If it was great to 120 before and now its crap at 50 it cant be the pinion angle...Assuming it didn't change any.

Check for a bent axle.

-Gun
__________________

Masters of Industrial Technology intelligence thats why I own guns made to drop elephants.
Gun Jam is offline   Reply With Quote
Old 01-17-2010, 07:05 PM
MustangForums
Ford Mustang




Paid Advertisement

 
 
 
Reply

Tags
1999, 2005, 9, angle, body, cobra, ford, fox, gear, inch, make, mustang, noise, pinion, set

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
pinion angle or driveline? Gun Jam Classic Mustangs (Tech) 333 07-26-2014 09:09 AM
if you adjusted you pinion angle, come in! rojizostang 4.6L V8 Technical Discussions 38 11-28-2008 12:08 AM
pinion angle?? Kaldar142 2005 - 2014 Mustangs 15 05-23-2007 04:45 AM
Measuring pinion angle for 1 piece driveshaft? moosestang GT S197 General Discussion 12 04-15-2007 01:04 AM
Pinion angle Bulitt GT S197 General Discussion 9 11-30-2006 12:28 AM

Advertising

Featured Sponsors
Vendor Directory
New Sponsors
All times are GMT -5. The time now is 06:46 PM.

© Internet Brands, Inc.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.

This forum is owned and operated by Internet Brands, Inc., a Delaware corporation. It is not authorized or endorsed by the Ford Motor Company and is not affiliated with the Ford Motor Company or its related companies in any way. Ford® is a registered trademark of the Ford Motor Company
Emails Backup