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Post Info TOPIC: Are Welded Subframes Legal?


HAMILTON, ONT

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Are Welded Subframes Legal?
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I’m considering buying a 1952 Chevy in Alberta and bringing it home to Ontario. The front suspension has been replaced with a Camaro subframe. I’m getting mix info about whether this will pass MOT inspection. Has anyone run into this since the last changes to the inspection process?



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ALLAN PARK, ONT ADMINISTRATOR

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It did in 1993. I did my 51 F1 with a Nova clip. I sold it in 2013 as is and the guy who bought it had it safetied.....legally as far as I know

 

 



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BELLEVILLE, ONT

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Yes, it's legal. It will pass an MTO safety inspection, providing the install was done correctly. IE straight, square, it aligns properly, handles ok on road test and welds are good.


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HAMILTON, ONT

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Thanks. I know people are still doing it, but the regs are a little vague. Says welding on the frame must be to EOM standard.

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TRENTON, ONT & SOUTH CAROLINA

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Probably will make a difference on who is inspecting it,if he is a car guy you are probably good to go,if he isn't maybe not.

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COBBLE HILL, BC

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I was led to believe it had to have a certified welder's stamp on it.


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MARKHAM, ONT

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This is from the new Reg.  There is also a project underway in Ontario to introduce a new Safety System which records items by tablet so it won't matter who inspects it, the standard will be universal.

 

c) frame and sub-frame  FAIL - bulge caused by corrosion - stress crack at side rail or rub-rail - rivet is loose, missing, dimpled by corrosion - bent, broken, cracked, kinked, welded or repaired in a way that does not meet OEM standard or industry standard - perforated or weakened by corrosion

 

Here is the link:  http://www.mto.gov.on.ca/english/trucks/pdfs/passenger-light-duty-vehicle-inspection-standard.pdf

 



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TRENTON, ONT & SOUTH CAROLINA

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Well reading that, you are good to go!

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MARKHAM, ONT

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As long as the vehicle was originally equipped with frame connectors, yes.  They strictly define OEM standards in the act.  You don't want someone welding in a couple of solid bars that won't crumple properly in a major collision.

 

a) - welded, modified or repaired in a way that does not meet OEM standard or industry standard - bent, broken or cracked - perforated or separated due to corrosion between mount and frame member - rusted or corroded to a depth sufficient to become weakened



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MARKHAM, ONT

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The one that could get tricky involves floor pan repair.  Anything extending into the toe board, rocker or tunnel means a new floor pan has to be spot welded in just like original.  There is a good diagram in the reg.

 

Repair of holes in the floor of the vehicle due to corrosion perforation is permitted, provided that the hole does not extend into a structural area of the floor, such as seat-belt anchors, seat supports or rocker panels. Edges of the hole prepared for repair must not exceed 200 mm in length or extend within 50 mm of tunnel, rocker, seat-support structure or firewall / bulkhead (see Figure 1). No “pop” rivets, arc welding or flame repair for high strength steel, TIG or MIG stitch welding is acceptable. 



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HAMILTON, ONT

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After viewing the truck today it turns out to be a moot point. The subframe work was very good. I doubt anyone would complain about it. It truly looked OEM. Unfortunately, the truck needs way too much for the price tag. Thanks for the replies. I feel I have a better understanding of what’s acceptable.

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