So you want to change motor in your FD3S, LS or otherwise, and you want everything you need to mount it up? I'm your huckleberry supreme. This is the v8rx7 community's #1 choice in terms of performing a conversion. This kit stresses ease of initial installation, clean looks, excellent clearances for headers and exhaust, and ease of service-ability down the road plus it has everything you need. Note, we're launching the subframe with LS motors in mind, but we're working on variations for 20Bs and 2JZs. If you happen to be in SoCal and are interested in some co-development we'd love to talk to you. In the meantime, for those not into LS engines we're offering a version of this without the motor mounts welded so you can DIY your own.
A little backstory first: for several years Ronin was adding parts and powdercoat to FD subframes made by Samberg Performance. When Samberg exited the marketplace we finally had a chance to start over, improve everything that was less ideal about that kit, and make an FD swap kit setup of our own.
This version is the Kit Offering:
Ronin FD Engine/Trans Kit (includes subframe, pedestals, T56 trans mount--all bare by default, engine/trans isolators, as well as the complete bump steer kit and all appropriate hardwae). Note: the trans mount includes sandwich plates (not shown) which clamp the transmission tunnel.
A couple notes on bump steer correction and engine placement. An LS engine is damn tight in an FD engine bay. One of our competitors claims that the FD steering rack placement is magic and shouldn't be messed with. This is wrong. The FD exhibits a great deal of bump steer from the factory as proved here: https://youtu.be/tN4JNP2yN6c. We lower the rack to avoid hood interference. If you don't do this, the only choices are moving then engine up and/or back which creates interferrence with the firewall and tran tunnel. The F-body pan (or Holley equivalent) that's needed with this kit is as thin as you can go without interferring with the crankshaft.
Instead we're offering full adjustable bump steer based upon Speedway Motors spindle interfaces. However since the spindles do add a bending moment we're also adding Ronin exclusive spindle supports, spherical tie rod ends by Aurora and tie rod interfaces. We may lock in a specific position down the road but for now adjustability seems like the simple approach and allows drivers to dial in handling to their own liking whether you're targeting theoretically perfect race car geometry or the lively bump steer Mazda started with.
Options for the Kit:
Choose a rear end to match:
Details on the FD 8.8 are available here: http://www.roninspeedworks.net/index.php?route=product/product&product_id=88
Details on what's different about Grande here: http://www.roninspeedworks.net/index.php?route=product/product&path=70&product_id=109