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Author Topic: Anyone over tighten oem vw rod bolts?  (Read 2861 times)

October 28, 2010, 08:15:39 pm

kevinm

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Anyone over tighten oem vw rod bolts?
« on: October 28, 2010, 08:15:39 pm »
The reason i ask is i think i may have tightened them close to spec when installing my rod bolts and am wondering if i go a little over am i still in the elastic area of the bolt.  I have an older Beltley for 1975-79 and it claims to tighten the connecting rod nut to 32ft.lbs.  Probably works out close to 22ft.lbs and a quarter tune?  Anyone ever tighten to the older spec for the 1.5l diesel?
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Reply #1October 29, 2010, 09:31:32 am

R.O.R-2.0

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Re: Anyone over tighten oem vw rod bolts?
« Reply #1 on: October 29, 2010, 09:31:32 am »
the rod bolts in my 1.5 are re used, and torqued to 44 ft lbs IIRC.. and it spun LOTS of RPMS.. as many as i could turn it before the pump rollers started skipping...
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Reply #2October 29, 2010, 12:21:03 pm

zukgod1

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Re: Anyone over tighten oem vw rod bolts?
« Reply #2 on: October 29, 2010, 12:21:03 pm »
As you know they are supposed to be replaced most of the time.

However.. I have never replaced a one, well one I did because my torque wrench was broken and snapped the damn thing..  :o
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Reply #3October 29, 2010, 12:34:01 pm

RadoTD

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Re: Anyone over tighten oem vw rod bolts?
« Reply #3 on: October 29, 2010, 12:34:01 pm »
Quote from: R.O.R-2.0 on October 29, 2010, 09:31:32 am
the rod bolts in my 1.5 are re used, and torqued to 44 ft lbs IIRC.. and it spun LOTS of RPMS.. as many as i could turn it before the pump rollers started skipping...

Wow, that's nuts! Haha
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Reply #4October 29, 2010, 03:09:18 pm

dennis

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Re: Anyone over tighten oem vw rod bolts?
« Reply #4 on: October 29, 2010, 03:09:18 pm »
Quote from: zukgod1 on October 29, 2010, 12:21:03 pm
As you know they are supposed to be replaced most of the time.

However.. I have never replaced a one, well one I did because my torque wrench was broken and snapped the damn thing..  :o

You only need them for the intake stroke. Iv never replaced one on purpose either.
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Reply #5October 29, 2010, 07:34:34 pm

maxfax

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Re: Anyone over tighten oem vw rod bolts?
« Reply #5 on: October 29, 2010, 07:34:34 pm »
I rarely replace them for myself..  Never had an iissue.. If it's someone else's engine I do to cover my butt..  I know I have seen somewhere that some of the early diesels did not have stretch bolts on the rods..  I think it was discussed here at one point..
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Reply #6October 30, 2010, 10:03:37 am

kevinm

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Re: Anyone over tighten oem vw rod bolts?
« Reply #6 on: October 30, 2010, 10:03:37 am »
when reusing the bolts do you try to tighten to say 30ftlbs. to make sure there is a stretch?
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