MAZDA RX7'S, 20B, 13B, 13BT, 13BREW, RX8

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rx7 that I'ave had

Pic below is with a after market bumper

vsidenoisecone.jpg

Not long after dropping motor in, still trying to plan out how it'll all fit, and how to run oil/ water lines, etc

20bdrop.jpg

this photo would have been taken after the rx was made legall, would have clocked 2-3000 mile in her by now

20bmotor.jpg

Below, the first time she moved under 20b power

fiststart.jpg

Std Cosmo IC, which has been mod. so the pipes into & out of th IC  go past the Radiator, instead of over the top of the Radiator.

cosic2.jpg

New Bar and Plate IC, more trimming need on the front bumper, made the hole wider than IC, so air can clean air can get to the Radiator.

2bigic.jpg

This wastegate (38mm) will go on with this "B' series 20b, But it will be  with a different set of twin turbo's (will still use the Std twin turbos wastegate as well as this 38mm WG) this will get done alone with the bigger Intercooler with new pipe work, Bigger Radiator, Bigger Exhaust, Fuel Pump & lines, and other mod's

wastegate.jpg

Below, The 6 Ib flywheel

20bflywheel.jpg

The Clutch, 6 pluck, brass button

20bclutch2.jpg

The next four photos show the difference between the 20b trottle body and a  series 4 RX7 13bt trottle body.

diffb1320tb.jpg

tbdiff4.jpg

tbdiff3.jpg

tbdiff2.jpg

13brew motor--

Before the 20b, I had a 13brew motor out of a Cosmo, this had one single turbo, a series 5, which had had  a larger front wheel put in it.

The Cosmo 13brew, was by far the best of the 13b's I'ave had, this made good power, and ran well, but if I was going to drop this type of motor in another rx7, I would put a good sized fuel pump in it, something bigger than a Bosch 040 or 044, as these pumps don't flow amount of fuel needed.

Cosmo 13brew, only did 4000 miles on this motor before selling, ran a mod. series 5 rx7 turbo with a 58mm front wheel.

res13brew.jpg

The clutch that I ran on this Cosmo motor, was a gilken twin plate.

res13brew2.jpg

this 13brew was controled by a LT 8 Mircotech, and the std series 4 coils, injector, and std intercooler, but this I front mounted.

res13bre.jpg

any comments, please E-Mail discotec@clear.net.nz