EPIC nuts/studs loosening thread (reposting stupid stuff without reading = warning)
07-20-2009, 09:40 AM
#321
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OK there is not enough clearance under two of the four bolts on the turbo side of the T2 flange. The turbine housing gets in the way, particularly the wastegate pivot part of the casting. Keep your EWG comments to yourself 
. So I am going to go the through-bolt route with socket head cap screws on the manifold flange side. Since I have an S4 manifold I can do this. Sorry all you cast mani guys 
Seriously though I'll post up picts soon. I just have to figure out what FedEx did with my nuts.
. So I am going to go the through-bolt route with socket head cap screws on the manifold flange side. Since I have an S4 manifold I can do this. Sorry all you cast mani guys Seriously though I'll post up picts soon. I just have to figure out what FedEx did with my nuts.
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07-21-2009, 07:06 AM
#326
Has anyone tried these from 034 motorsports?:
Aircraft Quality Turbo Lock Nut, M10 x 1.5
Temp range seems low at 500F, but I have a hard time believing our temps are much higher than this guy:
Aircraft Quality Turbo Lock Nut, M10 x 1.5
Temp range seems low at 500F, but I have a hard time believing our temps are much higher than this guy:
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07-21-2009, 09:39 AM
#327
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Has anyone tried these from 034 motorsports?:
Aircraft Quality Turbo Lock Nut, M10 x 1.5
Temp range seems low at 500F, but I have a hard time believing our temps are much higher than this guy:
Aircraft Quality Turbo Lock Nut, M10 x 1.5
Temp range seems low at 500F, but I have a hard time believing our temps are much higher than this guy:
"Torque to no more than 15 ft/lbs"
???
??? Why so light?
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07-21-2009, 12:35 PM
#332
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Because these have a 12mm head on a 10mm stud. So there is only 1mm of meat all around. You will tear it apart with more torque.
Tightening them by hand firmly with a normal hand spanner is - I think - roughly around double that (50 ftlbs/68Nm).
Tightening them by hand firmly with a normal hand spanner is - I think - roughly around double that (50 ftlbs/68Nm).
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07-21-2009, 01:40 PM
#336
I've tested this before. "Pretty tight" with a 3/8" ratchet is about 20ft/lbs. Years ago I worked as a mechanic at Russell racing. The axles on formula Mazdas are installed with 8 socket head cap screws that needed to be torqued to 22ft/lbs, yet there was no way to get a torque wrench in there. So we tested it by feel. 20ft/lbs was pretty tight. 22lbs would hurt a little when the end of the ratchet pressed into your palm.
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07-21-2009, 02:03 PM
#339
I've tested this before. "Pretty tight" with a 3/8" ratchet is about 20ft/lbs. Years ago I worked as a mechanic at Russell racing. The axles on formula Mazdas are installed with 8 socket head cap screws that needed to be torqued to 22ft/lbs, yet there was no way to get a torque wrench in there. So we tested it by feel. 20ft/lbs was pretty tight. 22lbs would hurt a little when the end of the ratchet pressed into your palm.
I'm sure it was pretty close, though - you get good at anything you do a lot.
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