|
|
|
|
| Author |
|
|
Kind of Blue
Join Date: Sep 2010
Location: Delaware
Posts: 2,308
|
Fan case movement with new fan strap - Stupid question
So over the summer, I ditched my original fan strap for an Achtung Craft unit. Vanity will be the death of my car.
After ~4 months of use, I've noticed the fan has ever so slightly inched forward where it's barely contacting the crank pulley (Maybe 1cm of movement). I loosened it, pushed it back, then retightened and went for a short drive and it did in fact move just a hair again. I did not tighten the fan strap to the full 72 inch pounds (~20 inch pounds in reality) but I did give it the old push/tug test which it passed with flying colors as it was certainly tightly in place. Should I just go ahead and tighten that bad boy down a bit more? Obviously, movement is going to cause expensive damage over time but I'm terrified of cracking that Mag housing. Again, stupid question, but trying to avoid an expensive outcome.
__________________
1971 911T w/ a 2.7 (ITBs, EFI, a bunch of other stuff, 2180 pounds with fuel) 2024 Ford Bronco Raptor |
||
10-31-2022, 06:08 AM
|
|
|
Registered
Join Date: Mar 2001
Location: Marysville Wa.
Posts: 22,415
|
The originals are a lot beefier, is all I've noticed.
__________________
https://www.instagram.com/johnwalker8704 8009 103rd pl ne Marysville Wa 98270 206 637 4071 |
||
|
10-31-2022, 07:20 AM
|
|
|
Kind of Blue
Join Date: Sep 2010
Location: Delaware
Posts: 2,308
|
Quote:
__________________
1971 911T w/ a 2.7 (ITBs, EFI, a bunch of other stuff, 2180 pounds with fuel) 2024 Ford Bronco Raptor |
||
|
10-31-2022, 07:25 AM
|
|
|
Kind of Blue
Join Date: Sep 2010
Location: Delaware
Posts: 2,308
|
I had some free time this afternoon so I tightened it up. I don't like that the mounting bracket bends as it's tightened as it doesn't give me confidence in the overall unit. I tightened it up a few more turns than before, which led to some slight metal creaking (but no apparent cracks or warping) and took it for a drive. It didn't budge. I'm guessing colder weather caused everything to shrink and move with normal operating vibration.
Overall, I wish I'd stuck with my OEM bracket but I'm happy nothing broke (yet). unit 
__________________
1971 911T w/ a 2.7 (ITBs, EFI, a bunch of other stuff, 2180 pounds with fuel) 2024 Ford Bronco Raptor |
||
|
10-31-2022, 09:20 AM
|
|
|
New-ish 911SC Targa Owner
|
my oem strap does this but it takes it many weeks to move much. I'm not too excited about tightening the strap much more because the frail mag housing is known to crack and distort.
How tight should we all be tightening these?
__________________
'83 Targa 300k w/ freshened 3.0 with 930/52 case# 6770540 ARP and Raceware hardware - AEM Infinity 506, Triumph T595 ITBs, B&B headers, Dynomax muff, Fidanza FW, Alum PP-203whp |
||
|
10-31-2022, 09:39 AM
|
|
|
Kind of Blue
Join Date: Sep 2010
Location: Delaware
Posts: 2,308
|
Quote:
__________________
1971 911T w/ a 2.7 (ITBs, EFI, a bunch of other stuff, 2180 pounds with fuel) 2024 Ford Bronco Raptor |
||
|
10-31-2022, 10:27 AM
|
|
|
|
Registered
Join Date: Sep 2004
Location: San Jose, Ca
Posts: 853
|
My original strap also lets the bottom of the fan housing creep a bit. The pulley has cut a half moon out of the housing. I've tried to correct it, many times and it still slips back. Don't think it's your new strap
Tony
__________________
Tony 1973 914 2.2 FAT Black 1974 911 Targa Lime Green 2018 Macan GTS White 2019 Targa GTS Agate Grey |
||
|
10-31-2022, 11:42 AM
|
|
|
Kind of Blue
Join Date: Sep 2010
Location: Delaware
Posts: 2,308
|
Quote:
__________________
1971 911T w/ a 2.7 (ITBs, EFI, a bunch of other stuff, 2180 pounds with fuel) 2024 Ford Bronco Raptor |
||
|
10-31-2022, 03:17 PM
|
|
Jeanine
