93 BB base FD build-up

Chadwick · 04-27-2008, 11:18 PM

First and second post update with a bunch more pictures.

We started the car today and it is purring like a kitten but we did have a little drama getting there.

Yesterday we buttoned everything up and started to fill her with fluids. When she got about ¾ full of water a small leak was apparent. It looked to be coming from the coolant supply hose to the turbo. We took off the hose, inspected it and the fitting then re-clamped it. To our surprise it was leaking even worse. That is when we noticed the water was coming out of the fitting that is pressed into the water pump housing, not the hose

. We had to tear everything back off the front of the motor and replace the housing. While Brian, Andrew and I worked on getting everything back together, Mike polished the crap out of my Greddy Elbow and intercooler

.

With the water leak fixed Brian wired up the FJO injector driver and I wired up the Jacobs and we were ready to turn the key. Brian cranked her for about 6 seconds and she started to fire but he had already committed to releasing the key. He hit it again and she fired on the second crank. Right from the start she idled super smooth and only kicked out smoke for around 5 minutes. Andrew and I adjusted the fuel pressure and we let her get up to temp watching for any leaks the whole time. That is when we noticed a mist of what we thought was water coming from somewhere on the front of the engine. It was being slung by the belts and making a mist so it was really hard to tell where it was coming from. I had Brian kill the engine.

With the engine off it became obvious that it was not water but oil that was being slung and we could see right where it was coming from, the front bolt on the eccentric shaft.

Brian and Andrew pulled the piping and intercooler and we removed the bolt to find the crush washer had shifted when it was torque down. I promptly threw the crush washer in the trash. Brian applied a layer of RTV to the bolt and we reinstalled it.

We installed all the plumping back and fired her up for the second time. Maybe 2 or 3 cranks and she fired right up, this time with no leaks. We let her run for about 30 minutes and check all the pressures and temps. She is pulling 16-18 of vacuum at idle which is great for having all new seals and running for less than an hour total.

We all seem to think she has a deeper tone then before with a little stronger pop to the exhaust pulses.

Hopefully we can get everything else button down this week and get her on the dyno next weekend.

Stay tuned,

Dan

04-27-2008, 11:18 PM	#11
Chadwick Rotary Fanatic Join Date: Feb 2008 Location: Smyrna, TN, USA Posts: 239 Rep Power: 18	First and second post update with a bunch more pictures. We started the car today and it is purring like a kitten but we did have a little drama getting there. Yesterday we buttoned everything up and started to fill her with fluids. When she got about ¾ full of water a small leak was apparent. It looked to be coming from the coolant supply hose to the turbo. We took off the hose, inspected it and the fitting then re-clamped it. To our surprise it was leaking even worse. That is when we noticed the water was coming out of the fitting that is pressed into the water pump housing, not the hose. We had to tear everything back off the front of the motor and replace the housing. While Brian, Andrew and I worked on getting everything back together, Mike polished the crap out of my Greddy Elbow and intercooler . With the water leak fixed Brian wired up the FJO injector driver and I wired up the Jacobs and we were ready to turn the key. Brian cranked her for about 6 seconds and she started to fire but he had already committed to releasing the key. He hit it again and she fired on the second crank. Right from the start she idled super smooth and only kicked out smoke for around 5 minutes. Andrew and I adjusted the fuel pressure and we let her get up to temp watching for any leaks the whole time. That is when we noticed a mist of what we thought was water coming from somewhere on the front of the engine. It was being slung by the belts and making a mist so it was really hard to tell where it was coming from. I had Brian kill the engine. With the engine off it became obvious that it was not water but oil that was being slung and we could see right where it was coming from, the front bolt on the eccentric shaft. Brian and Andrew pulled the piping and intercooler and we removed the bolt to find the crush washer had shifted when it was torque down. I promptly threw the crush washer in the trash. Brian applied a layer of RTV to the bolt and we reinstalled it. We installed all the plumping back and fired her up for the second time. Maybe 2 or 3 cranks and she fired right up, this time with no leaks. We let her run for about 30 minutes and check all the pressures and temps. She is pulling 16-18 of vacuum at idle which is great for having all new seals and running for less than an hour total. We all seem to think she has a deeper tone then before with a little stronger pop to the exhaust pulses. Hopefully we can get everything else button down this week and get her on the dyno next weekend. Stay tuned, Dan __________________ 93 RX7 BB (Race Car) 93 RX7 SSM (Soon to be IBM and a daily driver) 05 Silverado Z71 08 Mini Cooper 80 LS RX7 (for sale)