SUNNY Z Posted February 2, 2012 Share Posted February 2, 2012 Searched, but found nothing conclusive I've seen where some people have cut the front crossmember for the diff out when using a Ron Tyler style diff mount, using only the pieces that hold the LCA's on. I was considering doing this exact setup, and I was just curious if anyone has seen any ill effects from doing this? It would make running my dual exhaust easier, along with making a diff swap easier, if it came to that. Please post any positive - or negative REAL WORLD advice, not "well it could do x or y". Thanks Quote Link to comment Share on other sites More sharing options...
redneck1545 Posted February 2, 2012 Share Posted February 2, 2012 (edited) I would also Like this info. My setup will be a little different as I'm using the Techno Toy tuning front mount for a shortnose r-200. I was looking at pete's site and saw where he cut a section out of the diff mount to make duals easier but if we can do away with the whole thing except for the control arm mounts anyways then I dont wanna bother with cutting out a "notch" like pete did. Edited February 2, 2012 by redneck1545 Quote Link to comment Share on other sites More sharing options...
johnc Posted February 2, 2012 Share Posted February 2, 2012 I would not recommend it. That cross member reinforces both sides of the LCA front mount. Quote Link to comment Share on other sites More sharing options...
rossman Posted February 2, 2012 Share Posted February 2, 2012 (edited) I know there are people out there running without the cross member that have not reported any problems. If that's good enough for you then go ahead and cut it. The cross member has three primary roles. First is to clamp the LCA bushings onto the structure of the car. Second is to react the differential nose load. Lastly is to react the LCA loads across the transmission tunnel. This last function is the one that concerns me when it is removed or cut away. The car has a nice beefy integral structure leading up the the LCA mount. If you remove the cross member, now load must travel across the thin wall around tunnel. Surely this situation increases deflections and stresses in the structure of the car. I have not seen or read about any failures resulting from the removal of this cross member. Maybe John or someone else has. For conservatism sake I would leave it in. Edited February 2, 2012 by rossman Quote Link to comment Share on other sites More sharing options...
RB26powered74zcar Posted February 2, 2012 Share Posted February 2, 2012 I removed mine during this recent short nose diff swap. I'm using the Techno Toy front mount, which bolts up to the oem diff strap brackets, and connects both sides of the tunnel area that the orig. X member does. I will have to watch it closely to make sure nothing goes bad. Since I don't track my car, I feel it will hold up to my driving style, Quote Link to comment Share on other sites More sharing options...
rags Posted February 2, 2012 Share Posted February 2, 2012 I've seen 2 cars tear the diff strap mount when using a short diff, but nothing specific to removing the stock front moint Quote Link to comment Share on other sites More sharing options...
SUNNY Z Posted February 4, 2012 Author Share Posted February 4, 2012 Thanks for the replies. I would agree that it would help in bracing, distributing the shear force across 4 bolts instead of 2. Hmmmmm I guess time will tell on what I end up doing. Quote Link to comment Share on other sites More sharing options...
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