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914World.com _ 914World Garage _ Feel a thump?
Posted by: Spankins6 Aug 15 2016, 02:28 PM
Hey all, I am new, so sorry if I mess up the flow.
I have tried searching and I can't find issues that other have had that are like mine.
So I bought a 914 off ebay last week, I got a great deal. The only major issue is that when I start from a stop in first gear, it feels like I am running over a pot hole or a large stick under my rear driver side wheel. It only happens in first, and I can't recreate it in any other gears.
I don't feel any binding up, so I dont think its the CV. And the shifter stays in place, so I dont think its the trans mount.
Has anyone ran into this issue before? If so, what do you think it could be?
Thanks!
Posted by: The Cabinetmaker Aug 15 2016, 02:52 PM
Loose shock, missing rear sway bar bushing, trailing arm bushing shot, or suspension console ear wallowed, shift rod hitting something, loose engine tin, etc. Get underneath and look at everything
Posted by: Elliot Cannon Aug 15 2016, 02:56 PM
and 
Posted by: forrestkhaag Aug 15 2016, 04:40 PM
I have had this same condition exhibited from my car for about two months or more. I have checked the bushings, shift rods and alignment, shocks etc. sways front and back, etc. all to no avail.
Only in first on takeoff and no weird tire wear or any other issues of note.
I need to have my 
AHole obnoxious nextdoor neighbor put his head in front of the rear tire while i take off to see if the sound changes more to that of a pumpkin popping rather than the subtle clunk i now experience. Now that is sa fine sound / if only in my mind.
Sidebar: This freak called the cops the other day when i dropped a 13mm Hazet on my carport slate floor. Ping! that pushed him right over the edge on Sunday morning... 
Posted by: Elliot Cannon Aug 15 2016, 06:05 PM
I have had this same condition exhibited from my car for about two months or more. I have checked the bushings, shift rods and alignment, shocks etc. sways front and back, etc. all to no avail.
Only in first on takeoff and no weird tire wear or any other issues of note.
I need to have my
AHole obnoxious nextdoor neighbor put his head in front of the rear tire while i take off to see if the sound changes more to that of a pumpkin popping rather than the subtle clunk i now experience. Now that is sa fine sound / if only in my mind. Sidebar: This freak called the cops the other day when i dropped a 13mm Hazet on my carport slate floor. Ping! that pushed him right over the edge on Sunday morning...
He called the cops?? Did it explode when it hit the floor? Did it burst into flames? Or is he just a DICK?
Posted by: 76-914 Aug 15 2016, 06:05 PM
I have had this same condition exhibited from my car for about two months or more. I have checked the bushings, shift rods and alignment, shocks etc. sways front and back, etc. all to no avail.
Only in first on takeoff and no weird tire wear or any other issues of note.
I need to have my
AHole obnoxious nextdoor neighbor put his head in front of the rear tire while i take off to see if the sound changes more to that of a pumpkin popping rather than the subtle clunk i now experience. Now that is sa fine sound / if only in my mind. Sidebar: This freak called the cops the other day when i dropped a 13mm Hazet on my carport slate floor. Ping! that pushed him right over the edge on Sunday morning...
You want to borrow a rivet gun and a few hundred rivets, Forrest ?
Posted by: Elliot Cannon Aug 15 2016, 06:07 PM
I have had this same condition exhibited from my car for about two months or more. I have checked the bushings, shift rods and alignment, shocks etc. sways front and back, etc. all to no avail.
Only in first on takeoff and no weird tire wear or any other issues of note.
I need to have my
AHole obnoxious nextdoor neighbor put his head in front of the rear tire while i take off to see if the sound changes more to that of a pumpkin popping rather than the subtle clunk i now experience. Now that is sa fine sound / if only in my mind. Sidebar: This freak called the cops the other day when i dropped a 13mm Hazet on my carport slate floor. Ping! that pushed him right over the edge on Sunday morning...
You want to borrow a rivet gun and a few hundred rivets, Forrest ?
An angle grinder with bad bearings?
Posted by: mskala Aug 15 2016, 06:07 PM
Engine mounts on front support bar sheared?
Posted by: forrestkhaag Aug 15 2016, 06:37 PM
hummmmm Rivet gun... I didn't considered that one.. I like it!! Angle grinder,... i am still trying to wear it out... sounds of production gets the cops over here quick-smart.
Can you say DICK / but my lovely wife will not defile the word DICK referring to this dick.. It is a word that should be reserved for things that work. This dick doesn't work.
Today I took the hood off of my car and filled a couple of holes in my hood from hood pin holes not matching 914-6GT four-place pins now in its future..( with metal and welding tin into it and carefully grinding flat the metal work / no Bondo by the way// ) and this freak put a sound (noise) generator in his bathroom window adjacent to my carport space / zero lot line / no side yard setback / etc. / to deal with the work going on in my space on my property (in a commercially zoned property)
This noise machine features a loop that sounds like creaking metal daemon working against an old double man timber saw blade. He gets one for creativity.
Rivets...... yes.... i think i know how that works.
and then.. Today, this day.. I am splitting firewood for the coming winter - in my carport. It gets down below 80 in December here in Laguna Beach and I have to prepare.
This lame F texts my wife (not me) to complain about the arrangement of my firewood stack on our property. This is what we am dealing with.
Posted by: rgalla9146 Aug 15 2016, 07:42 PM
Engine mounts on front support bar sheared?
Bingo !
Can be induced in any low gear with aggressive on/off throttle
Posted by: 914_teener Aug 15 2016, 08:43 PM
Back on topic.
Someone probably jacked the car up from the engine. Don.t do that.
Posted by: Spankins6 Aug 16 2016, 12:56 PM
Thank you everyone for the quick responses!
Engine mounts on front support bar sheared?
Bingo !
Can be induced in any low gear with aggressive on/off throttle
I tried recreating it in 2nd and 3rd with aggressiveness, did have the same result.
Again, I am 914 new. What is involved with changing the motor mounts? Do I have to drop any part of the engine? Do you guys have any suggestions on a manual or write up?
Back on topic.
Someone probably jacked the car up from the engine. Don.t do that.
Good to know! I always try my best to jack at jack points.
Posted by: The Cabinetmaker Aug 16 2016, 01:07 PM
OK. So it does bump in 2nd and 3rd? Then mounts are a good bet. Not too hard. Jack car up. Support engine, remove bottom nuts from mounts. Remove shift rod. Remove mount bar. Remove oil filter. Remove top mount nuts with a quarter inch ratchet. Install in reverse. Good time to change oil and filter since the filter is off.Should take less than two hours. Then drive and enjoy!
Posted by: Spankins6 Aug 16 2016, 01:19 PM
OK. So it does bump in 2nd and 3rd? Then mounts are a good bet. Not too hard. Jack car up. Support engine, remove bottom nuts from mounts. Remove shift rod. Remove mount bar. Remove oil filter. Remove top mount nuts with a quarter inch ratchet. Install in reverse. Good time to change oil and filter since the filter is off.Should take less than two hours. Then drive and enjoy!
I meant to say doenst have the same result. But I am leaning towards the motor mount. Since the CV looks to be fine.
Thank you again!
Posted by: MikeInMunich Aug 16 2016, 02:01 PM
Engine mounts on front support bar sheared?
Absolutely. IMO, that thump is yer engine lifting up and dropping back down into the engine bar. Your mount is likely split right in half, at least on one side.
Posted by: Steve Aug 16 2016, 05:30 PM
I had the same problem years ago. Torque the side front nut on the trailing arms
Posted by: cwpeden Aug 16 2016, 06:52 PM
Ditto, before the hole in the body gets buggered.
Posted by: Spankins6 Aug 17 2016, 11:53 AM
Engine mounts on front support bar sheared?
Absolutely. IMO, that thump is yer engine lifting up and dropping back down into the engine bar. Your mount is likely split right in half, at least on one side.
Thanks again! Need to order the parts, where do you guys like ordering from?
Posted by: stugray Aug 17 2016, 12:15 PM
One of my favorite tools now when troubleshooting these types of problems: A GoPro 3 and my cellphone.
I mount the gopro to look at the item of interest (fuel pressure gauge, suspension member, engine mounts, etc.)
Then you can connect to the gopro with your cellphone and watch in realtime as you drive.
Posted by: Vacca Rabite Aug 18 2016, 11:49 AM
Engine mounts on front support bar sheared?
Absolutely. IMO, that thump is yer engine lifting up and dropping back down into the engine bar. Your mount is likely split right in half, at least on one side.
Thanks again! Need to order the parts, where do you guys like ordering from?
Get under the car and look before you order anything. A bad engine mount can be seen. Loose shocks can be seen. Missing bushings can be seen.
Don't just throw money at it. Take an afternoon, get under the car and look.
(and yes - I know damn well the pot calling the kettle black)
Zach
Posted by: stugray Aug 18 2016, 02:01 PM
Engine mounts on front support bar sheared?
Absolutely. IMO, that thump is yer engine lifting up and dropping back down into the engine bar. Your mount is likely split right in half, at least on one side.
Thanks again! Need to order the parts, where do you guys like ordering from?
Get under the car and look before you order anything. A bad engine mount can be seen. Loose shocks can be seen. Missing bushings can be seen.
Don't just throw money at it. Take an afternoon, get under the car and look.
(and yes - I know damn well the pot calling the kettle black)
Zach
Yes!
I should have mentioned in my post above, you dont need any fancy camera.
Just climb under the car and have a look.
The rubber engine mounts are under the fan shroud on top on the engine mount bar.
(That is for a later - side shift)
For a tail shift, there will be solid brackets in that location and the soft mounts are outboard where the bar connects to the body.
Posted by: The Cabinetmaker Aug 18 2016, 03:09 PM
Broken mounts are not always visible to the eye. They can appear fine when they are in fact not!
Posted by: Mblizzard Aug 18 2016, 08:31 PM
Besides looking, get a small pry bar and try to move things like shocks, bushings, and mounts. It is amazing what you can find this way.
Posted by: boxsterfan Aug 18 2016, 09:46 PM
Get under the car and take some quality pictures. Post them here.
I wouldn't drive it.
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