Topnault Body Parts *** Fantastic!

This site may earn a commission from merchant affiliate
links, including eBay, Amazon, Skimlinks, and others.

FYI: Found issues with TP firewall for 76-78 variants (stay tuned).
FYI: An engineer / 40 buddy is creating CAD drawings / 3D scans for TP to correct issues (i'm helping him). Tubs (1/2, 3/4, full) should be nearly perfect when process is completed; they will need to adjust tooling for A,B,C variants -- it's all going to take time.
 
FYI: An engineer / 40 buddy is creating CAD drawings / 3D scans for TP to correct issues (i'm helping him). Tubs (1/2, 3/4, full) should be nearly perfect when process is completed; they will need to adjust tooling for A,B,C variants -- it's all going to take time.

Haven't checked lately but remember their 79 and later cowls all were made for the 10/82+ insert for LHD. What it didn't have was the 10/82+ transmission hump. Sad because if they had the 10/82+ hump along with the inspection cover would be useful on the 79+ owners who wanted to add a H55F. The LHD insert dash is very hard to find and expensive. Few LHD with them. Another thing is 8/80 and later all US imported FJ40 had a collapsible steering column which different than the non collapsible columns.the latch on the glovebox door changed 8/80. Not if all LHD had the new latch but know RHD never did.
The issue I had with them is the one size fits all approach. They seem to want to make corrections but al this information is not hard to find.
 
FYI: An engineer / 40 buddy is creating CAD drawings / 3D scans for TP to correct issues (i'm helping him). Tubs (1/2, 3/4, full) should be nearly perfect when process is completed; they will need to adjust tooling for A,B,C variants -- it's all going to take time.
You guys doing all the different variations throughout the entire lifespan of the 40 series? Looking forward to hearing how this goes keep us updated please and thanks.
 
You guys doing all the different variations throughout the entire lifespan of the 40 series? Looking forward to hearing how this goes keep us updated please and thanks.
At this time correcting 77 & 78 due to our own projects needs. Between both of us we have 77-79. From what I know today, I believe 79 is correct.
 
Can someone please send me this measurement (mm) for rear sill (pre 1979)
REAR-SILL.webp
 
Can someone please send me this measurement (mm) for rear sill (pre 1979)View attachment 4079753

Curious where this diagram is from. Shows the floor butting up against the rear sill. That is not how the back goes together. The floor goes in between the cap and the rear sill and bends over giving it strength. If the did just butt together it would have been a full length weld not just a stitch weld in a few places. Unfortunately not around my 10/76 and wouldn't be for a while. It still original with 4,500 miles. Paint is original.
The carrot 044 (1).webp
IMG_0367.webp

Been over ten years that I took a hard look at my 68 for a member in Mexico who was/is restoring his 68. Thought about doing a thread on how the sill was put together up to 1/79 but haven't had many interested in doing since the offset in the horizon part of the rear sill is not offered by anybody. Lucky to currently have five tubs that are still intact between behind the floor. Only one that isn't an complete rust free sill in tact is a 73 FST which has this unexplained rust.
0006 (1).webp
 
As near as I can measure on my 1977, it's 75–mm.
 
Can someone please send me this measurement (mm) for rear sill (pre 1979)View attachment 4079753
This is just the rear sill. The “floor” that looks like it’s butted against the sill is actually the bend in the sill that extends to the quarter panel. I have the floor flanged that then goes underneath the upper sill cover (shown as 76.64mm in the image).
 
Curious where this diagram is from. Shows the floor butting up against the rear sill. That is not how the back goes together. The floor goes in between the cap and the rear sill and bends over giving it strength. If the did just butt together it would have been a full length weld not just a stitch weld in a few places. Unfortunately not around my 10/76 and wouldn't be for a while. It still original with 4,500 miles. Paint is original.
View attachment 4079791View attachment 4079792
Been over ten years that I took a hard look at my 68 for a member in Mexico who was/is restoring his 68. Thought about doing a thread on how the sill was put together up to 1/79 but haven't had many interested in doing since the offset in the horizon part of the rear sill is not offered by anybody. Lucky to currently have five tubs that are still intact between behind the floor. Only one that isn't an complete rust free sill in tact is a 73 FST which has this unexplained rust.
View attachment 4079795
See FJ40 Paul comment. If you've been following this thread, I mentioned an "engineer" 40 guy (i'm just the helper)
 
Last edited:
See FJ40 Paul comment. If you've been following this thread, I mentioned an "engineer" 40 guy (i'm just the helper)

Curious if you or the engineer have ever seen rust free OEM sill? Just asking exterior dimensions and a drawing that doesn't show how the sill was made by Toyota makes me wonder. If someone is going to advise Topnault how correct issues would hope that actually know exactly how it was made. Originally Topnault was getting advise from a couple vendors on mud. Not sure Topnault ever had any LHD examples to use. As I've mentioned before originally their 1/79 plus cowl was one Toyota never made in LHD.
 
Curious if you or the engineer have ever seen rust free OEM sill? Just asking exterior dimensions and a drawing that doesn't show how the sill was made by Toyota makes me wonder. If someone is going to advise Topnault how correct issues would hope that actually know exactly how it was made. Originally Topnault was getting advise from a couple vendors on mud. Not sure Topnault ever had any LHD examples to use. As I've mentioned before originally their 1/79 plus cowl was one Toyota never made in LHD.
I have an OEM sill that is providing all the details other than the dimension mentioned as when I cut the sill out I wanted to save the rear floor so I cut the sill short. I wanted to ensure the sill was accurate so was looking for this dimension. All other dimensions and construction are off the actual sill.
 
Curious if you or the engineer have ever seen rust free OEM sill? Just asking exterior dimensions and a drawing that doesn't show how the sill was made by Toyota makes me wonder. If someone is going to advise Topnault how correct issues would hope that actually know exactly how it was made. Originally Topnault was getting advise from a couple vendors on mud. Not sure Topnault ever had any LHD examples to use. As I've mentioned before originally their 1/79 plus cowl was one Toyota never made in LHD.
Are you asking about the tooling Toyota used in their line for this part? ex. Stamp Press or Brakes, Roll Forming etc. I worked a number of years in a large regional metal manufacturing facility (I know a little ;)
 
Has anyone used the rear barn doors they offer on a '79-'84 40 series? Hard to tell from the pics, but is the outside lower corner rounded or is it square like the '75-'78?

How's the fit for alignment? Sounds like they've gotten the sheet metal guage issue sorted.
 
Back
Top Bottom