Another LS1 build
#32
Moderator
![](/mt2011/images_td/ranks/supporter1.gif)
![](/mt2011/images_td/ranks/moderator.png)
iTrader: (12)
Join Date: Nov 2008
Location: Tampa, Florida
Posts: 20,813
Total Cats: 3,051
![Default](https://www.miataturbo.net/images/icons/icon1.gif)
Stock rear subframe is designed with the front and rear portion different heights, which is more complicated than if it was "square". I'm sure they had a reason but it was a surprise when I first found out.
#33
![Default](https://www.miataturbo.net/images/icons/icon1.gif)
Both subframes are getting built in a jig which was built around the stock subframes. I made sure they werent warped when I measured them. I built in a "0" reference into my jig and measured to every location a bolt goes through a hole on the subframe. This is all the mounting locations in 3d space:
![](https://cimg5.ibsrv.net/gimg/www.miataturbo.net-vbulletin/1418x865/rear_subframe_design_346bff5d045cc28608c9b1d1b1d3bba394151d82.png)
#34
Moderator
![](/mt2011/images_td/ranks/supporter1.gif)
![](/mt2011/images_td/ranks/moderator.png)
iTrader: (12)
Join Date: Nov 2008
Location: Tampa, Florida
Posts: 20,813
Total Cats: 3,051
![Default](https://www.miataturbo.net/images/icons/icon1.gif)
If you built a jig based on the stock frame then it should be fine.
It was measurement from top to bottom at the front edge of the subframe was shorter than top to bottom at the rear edge of the subframe. It was discussed while I was at V8 roadsters looking at a rear tubular subframe sitting on the counter.
At least that's what I think I recall. It's been a couple of years. Ignore me while I have a second cup of coffee.
It was measurement from top to bottom at the front edge of the subframe was shorter than top to bottom at the rear edge of the subframe. It was discussed while I was at V8 roadsters looking at a rear tubular subframe sitting on the counter.
At least that's what I think I recall. It's been a couple of years. Ignore me while I have a second cup of coffee.