 901 or clutch noise |
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| dw914six |
 Mar 20 2014, 08:36 PM
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#1
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Member  Group: Members Posts: 131 Joined: 18-January 14 From: Houston Member No.: 16,902 Region Association: Southwest Region  |
(IMG:style_emoticons/default/evilgrin.gif) yep, I'm back. Issue #2 with my 914/6. I just installed the 901, just rebuilt by the very excellent Dr. Evil. Drove it home and the gears work great. However, I am getting a small "whirring" noise while driving, that goes away completely when the clutch is engaged.
Any ideas on the cause of the noise? M (IMG:style_emoticons/default/confused24.gif) Thanks World. |
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| wndsnd |
Mar 20 2014, 09:01 PM
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#2
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You wanted a horse, but got a goat. Nobody wants a goat.... Group: Members Posts: 2,861 Joined: 12-February 12 From: North Shore, MA Member No.: 14,124 Region Association: North East States  |
Did you replace the throw out bearing?
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| dw914six |
Mar 20 2014, 10:23 PM
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#3
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Member Group: Members Posts: 131 Joined: 18-January 14 From: Houston Member No.: 16,902 Region Association: Southwest Region |
QUOTE(wndsnd @ Mar 20 2014, 07:01 PM)  Did you replace the throw out bearing? If it is part of the gear stack, then it was either ok or replaced. Mike (Dr. Evil) did the rebuild. We just installed it back in the car. (IMG:style_emoticons/default/w00t.gif) I am thinking pinion depth is off a bit. Would that make sense to anyone? Would that cause a whirring sound when the car is rolling? Then goes quiet when. I push in the clutch? I just hate that because it requires dropping the tranny again and draining expensive swepco oil and pulling the stack out. Just a lot of work after all of this already done. (IMG:style_emoticons/default/headbang.gif) |
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| brant |
Mar 20 2014, 10:25 PM
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#4
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914 Wizard Group: Members Posts: 12,008 Joined: 30-December 02 From: Colorado Member No.: 47 Region Association: Rocky Mountains
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nope...
not part of the gear stack in the bell housing a bearing to replace when you service the clutch |
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| dw914six |
Mar 20 2014, 10:39 PM
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#5
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Member Group: Members Posts: 131 Joined: 18-January 14 From: Houston Member No.: 16,902 Region Association: Southwest Region |
QUOTE(brant @ Mar 20 2014, 08:25 PM) nope... not part of the gear stack in the bell housing a bearing to replace when you service the clutch Prior to rebuilding the tranny I had the clutch replaced. About 10 miles ago, so it is a fresh install. I will check receipts. Thanks. But there was no noise after the clutch install. (IMG:style_emoticons/default/sunglasses.gif) |
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| bulitt |
Mar 21 2014, 05:07 AM
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#6
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Achtzylinder Group: Members Posts: 4,189 Joined: 2-October 11 Member No.: 13,632 Region Association: South East States |
Number 8 in the dia. Make sure when the clutch is not depressed- the bearing is not spinning.
Did you use a synthetic gear oil? (IMG:http://www.914world.com/bbs2/uploads_offsite/c767504.r4.cf2.rackcdn.com-13632-1395400049.1.gif) |
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| Dr Evil |
Mar 22 2014, 06:42 PM
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#7
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Send me your transmission! Group: Members Posts: 23,041 Joined: 21-November 03 From: Loveland, OH 45140 Member No.: 1,372 Region Association: MidAtlantic Region
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Yes, I agree that the TOB is the likeliest culprit. (IMG:style_emoticons/default/smile.gif) Lemme know.
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| Dr Evil |
Mar 22 2014, 06:44 PM
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#8
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Send me your transmission! Group: Members Posts: 23,041 Joined: 21-November 03 From: Loveland, OH 45140 Member No.: 1,372 Region Association: MidAtlantic Region
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Just to be clear, I did the stack rebuild only so pinion depth was not set by me (IMG:style_emoticons/default/wink.gif)
But, I still think it is the TOB most likely. |
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| dw914six |
Mar 22 2014, 06:59 PM
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#9
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Member Group: Members Posts: 131 Joined: 18-January 14 From: Houston Member No.: 16,902 Region Association: Southwest Region |
QUOTE(bulitt @ Mar 21 2014, 03:07 AM) Number 8 in the dia. Make sure when the clutch is not depressed- the bearing is not spinning. Did you use a synthetic gear oil? (IMG:http://www.914world.com/bbs2/uploads_offsite/c767504.r4.cf2.rackcdn.com-13632-1395400049.1.gif) Swepco 201 ... No synthetics. |
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| dw914six |
Mar 22 2014, 07:01 PM
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#10
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Member Group: Members Posts: 131 Joined: 18-January 14 From: Houston Member No.: 16,902 Region Association: Southwest Region |
QUOTE(Dr Evil @ Mar 22 2014, 04:44 PM) Just to be clear, I did the stack rebuild only so pinion depth was not set by me (IMG:style_emoticons/default/wink.gif) But, I still think it is the TOB most likely. Ahhh, that is correct...which is why I was leaning to the pinion depth....if it could be messed up on my end...that is probably what happened. I will drive it a bit to see if it sets in and goes away. |
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