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Old 10-30-2020, 12:27 PM   #1
eLeSthree

 
Drives: 2011 Camaro SS 6sp
Join Date: Nov 2016
Location: Drivers Seat
Posts: 1,904
Snapped Idler pulley bolt thread pitch?

Does anyone know if the stock Idler pulley bolt on the alternator bracket has a thread pitch of 1.5 or 1.25?

Second time I snapped mine and I'm trying to get it replaced with ARP.

(dont bother finding me the arp part number, because my application uses a M10x100mm bolt, not stock)

Thanks,
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2011 Camaro SS---SOLD
TMS Dart 427 FED M311s, ESS Tuning G4 Blower, DSX Triple FP Assembly, DSX FF, FIC1300, Mcleod RXT 1200HD, Edlebrock Pro Flo XT
1158whp 1017wtq.

2010 CTS-V A6 - "Stock" SOLD
630whp 658wtq

2024 F-150 RCSB 5.0 4x4
waiting for tunes...
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Old 10-30-2020, 01:44 PM   #2
gtstorey

 
Drives: 2010 Camaro SS2,L99, LSA SC
Join Date: Aug 2017
Location: Huntsville, AL
Posts: 2,163
It would be very unusual for it to be 1.25 for a 10mm but I guess not impossible.

Do you have enough of the old bolt to measure 10 threads?
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Old 10-30-2020, 06:04 PM   #3
eLeSthree

 
Drives: 2011 Camaro SS 6sp
Join Date: Nov 2016
Location: Drivers Seat
Posts: 1,904
You are correct. I just talked to AJ at ESS and its 1.5. Got the broken bolt out and new bolt in already.

Thanks.
__________________
2011 Camaro SS---SOLD
TMS Dart 427 FED M311s, ESS Tuning G4 Blower, DSX Triple FP Assembly, DSX FF, FIC1300, Mcleod RXT 1200HD, Edlebrock Pro Flo XT
1158whp 1017wtq.

2010 CTS-V A6 - "Stock" SOLD
630whp 658wtq

2024 F-150 RCSB 5.0 4x4
waiting for tunes...
eLeSthree is offline   Reply With Quote
 
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