Wits end...again., Rocker arm studs....wtf? |
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Wits end...again., Rocker arm studs....wtf? |
Tjmrfe |
May 14 2020, 12:24 PM
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#1
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NON IMPEDING RATIONE COGITATIONIS Group: Members Posts: 132 Joined: 10-April 15 From: Cornwall on Hudson, New York Member No.: 18,612 Region Association: North East States |
Ok,
Thanks in advance, Changed my oil seals on my push rod tubes, with help fro y’all. So, I go to put the rockers back on...and strip my studs trying to put18 ft lbs of torque on them! (As per my “ how to rebuild your type 4 “ book, by Tom Wilson. So far he hasn’t lied to me...so, this happens to 3! Damn, so I order them from AA. And, wouldn’t ya know it. Trying to tighten on the studs AGAIN! I strip em. So, now I’m pisssed....now...I found a blog in samba, saying that 18 is way too much, so....I ordered another set from AA and lo and behold they stripped again with only 11 ft lbs..... I’m not doing well here. Ready to scream...louder.... Has any one else had this? What am I doing wrong? Thank you again.... |
BPic |
May 14 2020, 12:33 PM
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#2
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Member Group: Members Posts: 341 Joined: 5-February 18 From: Miami, Florida Member No.: 21,864 Region Association: South East States |
Damn! That sucks and I feel for ya. I can't help but will follow this to learn. Good luck.
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bretth |
May 14 2020, 12:42 PM
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#3
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Senior Member Group: Members Posts: 899 Joined: 23-June 15 From: Central TX Member No.: 18,882 Region Association: Southwest Region |
If you are talking about the rocker studs that mount to the head then you probably need to put in something like a thread cert. Once that aluminum head material is stripped with the steel stud threads they are no good any more. Will need to drill for thread cert or similar.
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914werke |
May 14 2020, 02:45 PM
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#4
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"I got blisters on me fingers" Group: Members Posts: 10,138 Joined: 22-March 03 From: USofA Member No.: 453 Region Association: Pacific Northwest |
& if you are going to this extent upgrade to 8mm step studs, no more wimpy 11mm fasteners.
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porschetub |
May 14 2020, 02:51 PM
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#5
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Advanced Member Group: Members Posts: 4,705 Joined: 25-July 15 From: New Zealand Member No.: 18,995 Region Association: None |
Used 9ft/lbs on last build and that was using the heavy 8mm studs for alloy valve covers.
TBO even that felt pretty firm. As mentioned you only fix is to fit thread inserts or helicoils,would pay to check the others,it gets messy when rocker gear comes loose (IMG:style_emoticons/default/sad.gif) . |
Nogoodwithusernames |
May 14 2020, 02:58 PM
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#6
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Member Group: Members Posts: 239 Joined: 31-May 16 From: Nor-Cal Member No.: 20,051 Region Association: None |
Are your aluminum heads stripped or are the studs themselves stripping where the little nut holds the rocker shaft?
If the stud itself is stripping bump up to the 8mm heavy duty studs from the T4 Store (LN engineering) vs the stock 7mm stud. |
type2man |
May 14 2020, 04:17 PM
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#7
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Member Group: Members Posts: 353 Joined: 3-March 09 From: Miami, Fl Member No.: 10,127 Region Association: South East States |
18 lbs is a lot. Is that what the book says?
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Tjmrfe |
May 15 2020, 07:30 PM
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#8
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NON IMPEDING RATIONE COGITATIONIS Group: Members Posts: 132 Joined: 10-April 15 From: Cornwall on Hudson, New York Member No.: 18,612 Region Association: North East States |
Are your aluminum heads stripped or are the studs themselves stripping where the little nut holds the rocker shaft? If the stud itself is stripping bump up to the 8mm heavy duty studs from the T4 Store (LN engineering) vs the stock 7mm stud. Thanks, yes the studs themselves, not the threads in the head ( thank God) so, that’s who I’ll try for the next round...thank you. |
Tjmrfe |
May 15 2020, 07:31 PM
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#9
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NON IMPEDING RATIONE COGITATIONIS Group: Members Posts: 132 Joined: 10-April 15 From: Cornwall on Hudson, New York Member No.: 18,612 Region Association: North East States |
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