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Home-brew Rotary
Join Date: Feb 2008
Location: GooseCreek SC
Posts: 552
Rep Power: 18 ![]() |
My ongoing project car
All right, this month I'm redoing my HBP engine.
I'm actually going to tear down both motors I have and build up one good one. First off is the original S5 NA motor that was in this car. Some history about this motor: I did a rebuild on this motor back in 2005 with the help of a builder. I did this cause I was totally new to rotaries. I wont mention or bad mouth the builder cause he kinda taught me what I know about doing rebuilds. This motor ran really well till I swapped in the S4 bridge-port. Ive put about 55k miles on this motor. It drank a 1/4 qt of oil every 1500 miles it seemed. I had it dynoed once, and it only made 131rwhp. I raced a stock na subaru impreza wagon once and was even. Toward the end of the last few thousand miles I put on this motor, I revved the hell out of it and I bounced it off the rev limiter a couple of times. Well today I tore it down, and this is what I found. ![]() ![]() If you look carefully, you'll notice that there are no corner seal plugs in this side of the rotor!? ![]() ![]() All the other corner seal plugs have been located. So 3 were not installed. Build up of ? junk. ![]() The porting on the center iron. ![]() ![]() Im going to use this center iron and the stationary gears from this motor cause the bearings look better than the ones in the S4 motor. That's it for today.
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'89 RX7 GTU, half-Bridge-port S4/S5 NA, E6K, Full RB exhaust, weekend warrior. '83 RX7, The "this might take awhile" project. '87 RX7 GXL, Rest In Pieces. '98 Subaru Impreza Outback-sport, rx7 rescue vehicle, down for repair. '94 Ford Ranger, daily. |
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