Page 1 of 3 123 LastLast
Results 1 to 15 of 37
  1. #1
    Newbie
    Join Date
    Dec 2017
    Location
    Sydney
    Posts
    16

    Default Need help! Think I've done some kind of damage - VIDEO of noise

    Hi all

    Car is a 66 Mustang coupe fully restored. It has a Winsor 347 stroker (roughly 4 years old) with fresh oil.

    Its been off the road for a month or so as I just finished putting in a new Performance Automatic reverse manual C4 and a high stall (3500rpm) TCE torque converter. New trans cooler and obviously trans oil, coolant etc.

    Went for a test drive yesterday. First 10 minutes of the drive were great, engine and gearbox very sweet and car very quick.

    Once warmed up I went for a very hard run to really test it out and possible I may have over-revved. I had a quick glance at my Autometer tach (to which I stupidly had not yet set a rev limit on) and think I saw about 6000-6500rpm (which should be safe?).

    Next set of lights horrible sounds coming from under car - it actually sounding like fluid bubbling and boiling to me so I limped the 2 minutes home at very low revs. When I popped the hood the drive belt (it has a gilmer drive) was completely off as the alternator bracket had come loose so I thought that was the sound. Tightened it up and this video is how it sounds.

    https://youtu.be/q5BHXIKc9I4

    I can't tell where the strange sound is coming from - whether it is engine or torque converter as it seems to be coming from everywhere at once. I tried listening with a screwdriver and the right hand side head is very loud compared to the left. But then you get under the car and it sounds even louder like its coming from the bottom rear of the engine or the bellhousing.

    I took off the inspection plate in the bellhousing and no loose bits of metal in there, bolts to the torque converter and flexplate all still tight. I've drained the oil and can't see any metal shards or anything. What would be my next step?

  2. #2
    casual poster TonnerGuy's Avatar
    Join Date
    Apr 2016
    Location
    Mooroolbark
    Posts
    335

    Default

    Wow that is a loud clunking sound, cant be the engine i dont think as looked as though running sweet as a nut, reminds me of when we installed another auto in the sons Suburu, even though thought had torqued up the convertor bolts properly, made similiar sound took inspection plate off while it was running, and could see the convertor wobbling around, so retighted the convertor bolts, and all was good.

  3. #3
    casual poster TonnerGuy's Avatar
    Join Date
    Apr 2016
    Location
    Mooroolbark
    Posts
    335

    Default

    Another thought have you had a hit on the sump, could be the crankshaft hitting the sump pan.

  4. #4
    Newbie
    Join Date
    Dec 2017
    Location
    Sydney
    Posts
    16

    Default

    Quote Originally Posted by TonnerGuy View Post
    Wow that is a loud clunking sound, cant be the engine i dont think as looked as though running sweet as a nut, reminds me of when we installed another auto in the sons Suburu, even though thought had torqued up the convertor bolts properly, made similiar sound took inspection plate off while it was running, and could see the convertor wobbling around, so retighted the convertor bolts, and all was good.
    Thanks - checked the bolts from flexplate (brand new) to the torque converter (brand new) and all are tight. Caught check the flexplate bolts without dropping the trans though which I am in no way keen to do with a trolley jack again! I'll run it with the inspection plate off and view - thanks for the idea.

    PS - no hits on sump.

  5. #5
    casual poster TonnerGuy's Avatar
    Join Date
    Apr 2016
    Location
    Mooroolbark
    Posts
    335

    Default

    Ha ha yes certainly not fun trying to juggle a great big lump of auto tranny back in, laying under the car, with the tranny on a trolley jack really sucks.

  6. #6
    Part of the furniture
    Join Date
    Dec 2013
    Location
    melbourne
    Posts
    849

    Default

    Maybe check end float for what it's worth also take a look at the balancer

  7. #7
    casual poster V8Dave's Avatar
    Join Date
    Jul 2014
    Location
    Darley, Vic
    Posts
    50

    Default

    While you have the inspection plate off, check the welds around the ring gear, I had one of these crack on a c6 and it made a hell of a racket and took me ages to diagnose.

  8. #8
    Newbie
    Join Date
    Dec 2017
    Location
    Sydney
    Posts
    16

    Default

    So far all Ive had time to do is change the oil and cut open the oil filter. No metal, all looks normal.

    I ran it again with new oil & filter - and the sound is very loud (but not getting any louder) - its a rattling/knocking sound (imagine you put a bolt in a can and shook it) and I've isolated it to the very back bottom of the engine - its either the flexplate/torque converter or the bottom end of the engine right at the back.

    Choice now is do I remove sump and take a look or go to hassle of dropping entire transmission and seeing what is going on in there (my reluctance stems from the fact I'm doing this on jack stands with a trolley jack and all the nice AN connections are tight and leak free).

    The fact that I just put in a new trans, new torque converter and new flexplate makes me hopeful this could be non engine related and is something I've done wrong in the installation. What could I have missed? Its a custom torque converter from TCE (Prostreet/pro race version - over $1000) - I supplied the engine specs - does the torque converter need to be balanced or anything to the flexplate? All i did was bolt on the new flexplate which is decent (28oz SCAT SFI - which matches the 3 month old 28oz ROMAC SFI balancer) to the engine, bolted the torque converter to the flexplate (4 bolts accessible via the inspection window) and slipped in the trans input shaft. Am I forgetting something? All the bolts are ARP and snugged up tight.

  9. #9
    Newbie
    Join Date
    Dec 2017
    Location
    Sydney
    Posts
    16

    Default

    PART 2 - clearer sound from under the car

    https://youtu.be/EH_TLpU9N_A

  10. #10
    casual poster TonnerGuy's Avatar
    Join Date
    Apr 2016
    Location
    Mooroolbark
    Posts
    335

    Default

    Something is adrift in the bell housing by the sound of it, converter loose or maybe the flex plate, you might need to bight the bullet and pull the tranny out to see whats going on, or pull out the starter motor and get a look in there maybe.

  11. #11
    Part of the furniture
    Join Date
    Dec 2013
    Location
    melbourne
    Posts
    849

    Default

    did you check if the crank is sliding in and out excessively front to back (end float0??? could the converter slide back enough before you bolted it to the flex plate?

  12. #12
    Newbie
    Join Date
    Dec 2017
    Location
    Sydney
    Posts
    16

    Default





    Just thought of something - the green one is the new TC, the black the old. AS you can see the old one has threaded bolts coming out of it that slot into the flexplate then you do a nut up through the inspection window. With the new one it was supplied with those 4 black bolts you can see. I took those out and inserted them through the inspection window so that head snugs up against the flexplate, and it threads through the flexplate and through the TC. There is no nuts on the back of the new TC. Is that all correct? No drain holes either on new TC.

  13. #13
    casual poster TonnerGuy's Avatar
    Join Date
    Apr 2016
    Location
    Mooroolbark
    Posts
    335

    Default

    Both achieve the same result in the end, so can not be the problem unless it has stripped a thread inside the new TC , we need a transmission experts opinion, someone like HQ 368

  14. #14
    Newbie
    Join Date
    Dec 2017
    Location
    Sydney
    Posts
    16

    Default

    Step 1 - hooked up mechanical oil pressure gauge - 50psi at idle, climing to 65psi at 2500rpm (didnt want to rev higher). Incidentally motor sounds very strong and revs freely despite the rattle.
    Step 2 - all TC to flexplate bolts are tight.

    I shall update as I go.

    Incidentally I rung TCE and played them the video - they have never heard that noise before, they dont think its the TC and they said the way I bolted it up is correct. They said it is balanced too. They are quite helpful and said to call them when I find out what it is.

  15. #15
    dno
    dno is offline
    casual poster
    Join Date
    Jun 2015
    Location
    vic
    Posts
    70

    Default

    Pull the starter and check if the return spring on the starter gear is broken.

Page 1 of 3 123 LastLast

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. Video: Whining noise, aussie 4 speed?
    By Nidstang in forum Driveline & Suspension
    Replies: 1
    Last Post: 22-06-2015, 02:32 PM
  2. One of a kind..........
    By cactus in forum For Sale Cars
    Replies: 7
    Last Post: 10-08-2010, 09:40 PM
  3. One Of A Kind HX Ute
    By les in forum For Sale Cars
    Replies: 7
    Last Post: 06-06-2007, 09:13 PM
  4. What kind of car accidents have you had?
    By madmick in forum Members Lounge
    Replies: 31
    Last Post: 24-06-2005, 08:49 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •