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LS4 / F40 swap - fieroguru by fieroguru
Started on: 12-13-2010 01:34 PM
Replies: 1768 (139156 views)
Last post by: fieroguru on 10-04-2021 08:26 PM
fieroguru
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Report this Post09-28-2021 07:58 PM Click Here to See the Profile for fieroguruSend a Private Message to fieroguruEdit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by pmbrunelle:

Cool!

Are you going to destroy a knuckle (hydraulic press setup?) to see what it takes to break it


Nope.
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La fiera
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Report this Post09-28-2021 09:47 PM Click Here to See the Profile for La fieraSend a Private Message to La fieraEdit/Delete MessageReply w/QuoteDirect Link to This Post
Are you going to heat treat them at least?
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pmbrunelle
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Report this Post09-29-2021 06:54 PM Click Here to See the Profile for pmbrunelleClick Here to Email pmbrunelleSend a Private Message to pmbrunelleEdit/Delete MessageReply w/QuoteDirect Link to This Post
Fieroguru seems to like mild steel (from his posts), so that wouldn't have enough carbon in the metal to be heat-treatable.
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fieroguru
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Report this Post10-03-2021 07:30 PM Click Here to See the Profile for fieroguruSend a Private Message to fieroguruEdit/Delete MessageReply w/QuoteDirect Link to This Post
Here are a couple of finished pictures of the leg braces. I did order some leveling pad as well as some threaded couplers. I will weld the couplers to the cross brace and use the leveling pads to help keep the water table as close to level as possible.




This is what the complete knuckle looks like. It weighs 6 lbs 7.3 oz, which makes is 1 lb 5 ox heavier than stock.



Here I just set it on the ball joint stud - I still need to clamp it in the mill and taper the hole.


I went ahead and cut off all the welds holding the bottom half of the lower a-arm to the upper half.
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Will
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Report this Post10-03-2021 08:19 PM Click Here to See the Profile for WillClick Here to Email WillSend a Private Message to WillEdit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by fieroguru:

Here I just set it on the ball joint stud - I still need to clamp it in the mill and taper the hole.



An additional gusset from the lower ball joint boss up to the inner end of the upper steering arm plate would be good.
The way you have it, there's not a direct load path from this side of the LBJ boss up to the bearing mount hole.

[This message has been edited by Will (edited 10-03-2021).]

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pmbrunelle
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Report this Post10-03-2021 09:53 PM Click Here to See the Profile for pmbrunelleClick Here to Email pmbrunelleSend a Private Message to pmbrunelleEdit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by Will:
An additional gusset from the lower ball joint boss up to the inner end of the upper steering arm plate would be good.
The way you have it, there's not a direct load path from this side of the LBJ boss up to the bearing mount hole.


Looks like any additional gussets will be hard to add without compromising wrench clearance and room to insert and bend the cotter pin.
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qwikgta
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Report this Post10-04-2021 01:00 PM Click Here to See the Profile for qwikgtaClick Here to Email qwikgtaSend a Private Message to qwikgtaEdit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by Will:

An additional gusset from the lower ball joint boss up to the inner end of the upper steering arm plate would be good.
The way you have it, there's not a direct load path from this side of the LBJ boss up to the bearing mount hole.



if he did that, he may as well "box" in the side too.
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Will
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Report this Post10-04-2021 01:05 PM Click Here to See the Profile for WillClick Here to Email WillSend a Private Message to WillEdit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by pmbrunelle:

Looks like any additional gussets will be hard to add without compromising wrench clearance and room to insert and bend the cotter pin.


I'm thinking of piggy-backing the gusset on the lower steering arm gusset, rather than "landing" it on the ball joint boss. It wouldn't affect tool clearance *much*.
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fieroguru
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Report this Post10-04-2021 08:26 PM Click Here to See the Profile for fieroguruSend a Private Message to fieroguruEdit/Delete MessageReply w/QuoteDirect Link to This Post
The purpose of any gusset is to help carry the load. It doesn't need to be perfectly aligned to contribute to the load sharing, especially in tension.

[This message has been edited by fieroguru (edited 10-04-2021).]

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