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New RB to 240z engine and trans mount (71c transmission)


winstonusmc

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Decided to move the engine back 2 inches to make more room in the front for accessory belts. I also am tired of the shifter hitting the center console and not being centered in the hole. I originally used the R32 mounts for the RB25 and factory transmission mount on the 71C RB transmission (RB20/25DE). For those who dont know, the stock mounts move the engine pretty far forward, so far that the power steering belt wouldnt clear the fans. I put these pics on my build thread for those who have seen them already.

First step was to build a jig with the old R32 mounts. The jig was designed to allow the bottom to be shifted 2 or 2.5 inches.

20161023_223245_zpsbgcs1ntp.jpg

Then mock them up in CAD (cardboard aided design)

20161025_205118_zpss7cwkgp6.jpg

Left Mount:

20161025_210132_zpsb43b6joo.jpg

Right Mount:

20161028_223745_zps0gvv4ji2.jpg

20161028_224249_zpsvsvnrwmh.jpg

Then Transfer to metal, 3/16 plate steel:

20161105_221340_zpsuz5ph4uo.jpg

20161114_212810_zpsaspm3isl.jpg

20161105_175140_zpsppsdzrus.jpg

20161105_232412_zpsk6aslecc.jpg

20161105_232431_zpshwsjszcz.jpg

A comparison in between the 240z mount and the partially fabbed new mount. Note the drop is greater to correct the pinion angle.

20161107_211428_zpsigtop4bq.jpg

20161114_191730_zpszrek33h5.jpg

20161114_191652_zpsi0izsa5a.jpg

Done and painted

20161114_174945_zpsglxno1jw.jpg

Here is how everything sits now. The head is about 2 1/4 inches from the firewall.

20161105_232450_zpsssmnfzpw.jpg

20161105_232400_zpszjbzd2cq.jpg

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