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> bumper bolt strength, will 8.8's be strong enough for temporary use?
914lover17
post Sep 20 2021, 06:14 PM
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My bolts are in pretty bad shape, looks like they have been cut down from unoriginal longer bolts. Some aren't fitting, even with the bumper off.

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I am going to lightly tap the nuts and wanto get replacement bolts/rubber biscuit spacers.

Are the 8.8 class m8 x 40mm bolts from the hardware store good enough for temporary use while I order the correct 10.9 class ones? the ones inside it now are 9.8.

example of correct OEM:
https://www.justkampers.com/n0103404-m8-x-4...rious-uses.html

Temporary option:
https://www.homedepot.ca/product/paulin-m8-...ated/1000135048
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914Sixer
post Sep 20 2021, 06:52 PM
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Factory bolts were 8.8 and plenty strong.
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mepstein
post Sep 20 2021, 07:28 PM
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Some people use threaded studs to make hanging the bumper easier.
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bkrantz
post Sep 20 2021, 07:31 PM
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QUOTE(mepstein @ Sep 20 2021, 07:28 PM) *

Some people use threaded studs to make hanging the bumper easier.


But then they miss out on the fun of single-handed supporting a bumper in place while trying to get a bolt on each side started. (IMG:style_emoticons/default/headbang.gif)
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mepstein
post Sep 20 2021, 07:37 PM
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QUOTE(bkrantz @ Sep 20 2021, 09:31 PM) *

QUOTE(mepstein @ Sep 20 2021, 07:28 PM) *

Some people use threaded studs to make hanging the bumper easier.


But then they miss out on the fun of single-handed supporting a bumper in place while trying to get a bolt on each side started. (IMG:style_emoticons/default/headbang.gif)

Actually not to hard if you can find a large cardboard box to sit it on. Also works well for removing.
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windforfun
post Sep 20 2021, 08:39 PM
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QUOTE(mepstein @ Sep 20 2021, 06:37 PM) *

QUOTE(bkrantz @ Sep 20 2021, 09:31 PM) *

QUOTE(mepstein @ Sep 20 2021, 07:28 PM) *

Some people use threaded studs to make hanging the bumper easier.


But then they miss out on the fun of single-handed supporting a bumper in place while trying to get a bolt on each side started. (IMG:style_emoticons/default/headbang.gif)

Actually not to hard if you can find a large cardboard box to sit it on. Also works well for removing.


Call your neighbor. Those bolts pictured above should sue for severe abuse. I guess some folks need help.
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Rand
post Sep 20 2021, 08:49 PM
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What bumpers? never mind, they will even hold the rbbbb
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914e
post Sep 21 2021, 08:45 AM
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These are not an 8.8 but Belmetric has 10.9 Flangehead bolts
https://www.belmetric.com/8mm-c-2_1208_1221...ull-p-7187.html
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Shivers
post Sep 21 2021, 09:59 AM
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QUOTE(Rand @ Sep 20 2021, 07:49 PM) *

What bumpers? never mind, they will even hold the rbbbb


Just consider it a trim panel, you really don't want to bump it. 8.8's are fine
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914sgofast2
post Sep 21 2021, 10:09 AM
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Threaded studs are the only way to go!
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914lover17
post Sep 21 2021, 12:00 PM
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QUOTE(Shivers @ Sep 21 2021, 09:59 AM) *

QUOTE(Rand @ Sep 20 2021, 07:49 PM) *

What bumpers? never mind, they will even hold the rbbbb


Just consider it a trim panel, you really don't want to bump it. 8.8's are fine


My bumpers fit pretty tight. I have to crank on the bolts pretty hard to bring them into the correct position. That's where my strength concern came in.
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Olympic 914
post Sep 21 2021, 12:01 PM
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QUOTE(914sgofast2 @ Sep 21 2021, 12:09 PM) *

Threaded studs are the only way to go!


(IMG:style_emoticons/default/agree.gif)

At least for the top two.

I cut screwdriver slots in the studs, then switch them out for bolts after the bumpers are hung.
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914lover17
post Sep 21 2021, 12:25 PM
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QUOTE(Olympic 914 @ Sep 21 2021, 12:01 PM) *

QUOTE(914sgofast2 @ Sep 21 2021, 12:09 PM) *

Threaded studs are the only way to go!


(IMG:style_emoticons/default/agree.gif)

At least for the top two.

I cut screwdriver slots in the studs, then switch them out for bolts after the bumpers are hung.


thats a great idea, especially since they are temporary.
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914lover17
post Sep 27 2021, 10:07 PM
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New bumper guards and improving your bumper fit is so so satisfying...

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