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MG MG Y Type - Floor Boards

Hello All:
I am in the process of getting YB #0973 back on the road. After removing the floorboard we noticed all 6 brackets to mount the body to the chassis were completely rusted off or missing all together. It appears the body has dropped since the top of the chassis is above the bottom of the door openings which meant the floor boards where higher than the door opening. We have fabricated new body sills and mounting brackets. It's now time to weld the brackets to the inside of the body sill. We are not sure how high the body should go up. Should the floor boards be level to the bottom of the door openings or lower to accommodate the carpet strip? Any help or pictures of how it should be would be greatly appreciated.

Thanks
WJK Kalafut

Hi WJK,
This maybe of use to you,
John yb0362

JC Jebb

John:
Thanks for your response. It is hard to tell from the picture where the brackets are attached in relationship to the door openings (how low below the door opening) The workshop manual doesn't show anything about the floor boards.

Are your floor boards or carpet strips level with the door opening on your car? I know this isn't something people look at or pay much attention to but since I have to attach new brackets and rails for the floor boards I would like to put them at the right height and not just guess. When I removed the floor boards the bottom of them was about level with the door opening, I know that's not where they should be....

I was hoping someone could take a quick look (or picture) at their car to see how the floor boards meet the door opening.

Any help would be appreciated.
WJK Kalafut


WJK.
Check out the octagon car club facebook site, there is a chap on there by the name of Peter Corderey building a y-type special, he might be able to help you . check out the photo's.
cheers ralph
R E J Stewart

wjk
on my car the brackets welded to the body butt up underneath the flange the the floor boards sit on. will get picture tomorrow in the picture you can see what i mean
John yb0362
JC Jebb

John:

Thanks,
Are the floor board flanges below the bottom door opening so the top of the floor boards are flush or just lower than the door opening.
WJK Kalafut

Hi Mr W J K Kalafut,
Perhaps the attached factory photograph may help. It gives an indication as to where the inner cill line runs and the height.
Hope this helps.
Good luck,
Keith


Keith D Herkes

Keith
Thank you, That picture is a huge help..I have only been thinking about the floor board height in relationship to the bottom of the door openings. The picture shows the floor board rail running into the bottom of the toe plate. I would assume the floor board rail runs level along the inner sill and looks like it is about 3/4" - 1" from the bottom of the door opening.

I'll rough it out level from the toe plate and see where it sits on the door openings. I guess as long as the floor boards (or carpet strip) are below the opening it's fine. I don't think the height of the body would effect anything (trans, driveshaft) moving forward with the build.....
WJK Kalafut

William

Sorry I did not reply to this earlier - I have been extremely busy launching our new product and ensuring all aspects of that work smoothly. Looks like Kieth has your request covered though - thank you Keith.

Paul
Paul Barrow

WJK

The outer floorboard rail sits on top of the chassis brackets which are level with the top of the chassis, from memory.
The floorboards when fitted will not sit on the chassis rail as the inner tunnel rail is also higher than the chassis. I used different thickness rubber on top of the inner/outer rails and on top of the chassis under the floorboards to stop any floorboard vibration.

Stuart
Stuart Duncan

Opps..... Just looked at the Chassis diagrams in the "Maintenance Manual & Instruction Book" Pg M1, which shows the body attachment brackets to be slightly below the top of the main chassis. I will get under my YT and check later today.

If you haven't got a copy, I suggest you purchase the CD version available from Paul on the imgytr website.

Stuart
Stuart Duncan

Hi All, It does look like the diagram on M1 shows the central bracket below the level of the chassis box section's top flange. However, the other two brackets at the gearbox/engine mount and just in front of the diff are a tad higher.

It makes sense to me that the brackets are nominally at the level of the upper flange of the chassis box member. Down perhaps by a couple of mm, to accommodate the roll at the corner of the chassis box.

Either way, the picture in the manual Section P, p10, supports that view.
likewise, if we check some of the photographs on this site re attaching seat belts in a Y type, the out-riggers are more or less level with the top of the chassis box .
I will post some pictures of the sill on my YT to add to the answer for the question about relative levels at the door sill. My out-riggers are in the one plane and the body sits on them with various thickness packers, as neither the body nor the chassis are completely "true" PO seems to have bent things a bit, I hope he/she were OK. Floorboards have seating strips around their edges, and the transmission tunnel sits on felt as well. I have had to vary thicknesses a bit. The cork pads under the middle of the the floorboards are 6mm on one side and only 2~3 mm on the other.
PS the extra out-rigger is to attach the inboard anchor for a lap/sash belt. (Similar to other methods but partly bolted on.) regards KGM
K G Mills

an image (I hope) KGM
K G Mills

Second image nKGM

K G Mills

Well, here's no.3. I try one again.

K G Mills

THis is the last one of the three I have just taken. KGM

K G Mills

KGM
Thanks for the pictures...They show exactly what I was looking for. I have a much better idea of how high I need to raise the body before attaching the new support brackets to attach to the chassis out-riggers. The floor board rail on the body sill looks to be about 1" below the door opening.
WJK Kalafut

Hi,
the upstand on the sill to receive the windlace that forms the door inner seal is a bit less than an inch on my YT. varies a bit but from 3/4 to 7/89 would be about right.

But I would suggest you don't take that without some qualification.

The sills on my YT required more or less a complete rebuild.
The attached image shows one of them. Taken from along side where the rear wheel would be, looking forward. You can see the inside of the lower hinge for the door.

Should have called her Lacey.

regards KGM


K G Mills

This thread was discussed between 09/07/2019 and 16/07/2019

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