Pictures of the Week                                            October 9, 2002

The oil cooler mounting bracket is complete.  I have machined the seal relief on the bottom and welded on the -10 tube nipples on the top.  The photos below show the bracket with 90 degree -10 hose fittings attached.   

  This is the top of the oil cooler bracket showing the -10 hose fittings that will connect the oil lines from the engine.

  This is the bottom of the mounting bracket showing the relief for the oil cooler seals.

       Front and rear views of the completed assembly before mounting on the firewall.

                                                                                                                                        October 10, 2002

            The oil cooler is mounted on the firewall and the top engine mount backing plate is in place.  I found that if you put the engine mount bolts in last the back plate lines up much easier with all the AN-3 locating bolts much better.  Airflow through the oil cooler is down so the cooler is angled out 15 degrees to the side and down 5 degrees from horizontal.  This is to facilitate oil cooler exhaust air flow out the right side cowl flap.  I am building a fiberglass cap for the top of the oil cooler that will take air from a 3" flex hose in the center  of the rear engine baffle and distribute it across the oil cooler inlet.

                                                                                                                                         October 13, 2002

Not a lot of progress this weekend, but not for lack of effort.  I tried to identify the turbo inlet oil fitting.  I have concluded that it is a 12mm x 1.25 (perhaps 1.50) inverted flare.  I have not been able to find this fitting anywhere.   It seems that a 7/16"x24 is very close, only about .015" smaller on diameter.  Aerpoquip has a very cool break adapter that converts 7/16x24 to -4 tube and it looks to be several inches long from the picture in the catalog.  I have found a report on the internet from a fellow turboing his CRX Honda with a T25 turbo and he claims that the fitting is 7/16X24.  In truth I think it is 12mmx1.0 but this is so close that you can't tell the difference.  It wouldn't work the other way putting a 12mmX1.00 into a 5/16x24 but this way it works.  I measured the hole and it is approximately 0.015" larger than a 7/16 nut.  close enough for airplane work.  The 24 pitch works out to 1.05mm / thread, again, close enough for airplane work.  I'll order this fitting and see how my measuring worked out. 

The little bit that I did accomplish this weekend was putting on  one of the two oil cooler lines.  I couldn't do the second one because I need a different fitting out of the oil cooler adapter.  The straight 3/8npt to -10 tube adapter interferes with the other one.  I'll order a 45 degree 3/8" ntp to -10 adapter and see how that works out.  In addition, I ran out of 90 degree hose end fittings and I'll need to order a few more.  I also put on the scavenge oil pump exit oil line.  The top fitting is also on order.

Click on the pictures for a full sized photo.

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