An End-of-build Retrospective on my Rx7 Evo GT by gmonsen

By diyauto
( 3 )

6 minute(s) of a 280 minute read

4-8-2013

4-8-2013


Here are a couple more pictures of the engine. Logan is going to run the motor with the stock intake while he makes the ITB intake. You can see the coolant hard pipes pretty well in these.


G






4-16-2013


Here's my coils mounted up. Shelf brackets not polished yet. The 6 coils on top are Bosch and fire what were the old trailing plugs and the new plugs we added. Down below it is a similar shelf bracket that holds 3 LS2 coils that fire the leading coils. 


G



HERE ARE THE TOP 6 BOSCH COILS FOR THE SECOND AND THIRD FIRINGS... 




AND, HERE'S THE LOWER 3 LS2 COILS THAT MOUNT BELOW THE TOP 6...



4-17-2013


My new intake flange less the secondary butterflies...



While I hope I have pictures of it, I wanted to point out how the secondary butterflies will be installed and work, so I'm repeating the drawing of the butterflies in the intake flange from earlier in the thread. 




The intake runners will be port-matched to the intake flange and the 3 butterflies will be installed on the housing side of the flange. So, under light load, the primary butterflies in the throttle bodies will be opened, but the secondary butterflies to the larger intake ports will be closed. Torque will be improved, response, and gas mileage cruising.




4-18-2013


So, the coils -- all 9 of them  -- are now mounted and the plugs getting wired. Here's the bottom rack of 6 Bosch coils that are firing the leadings and trailing 1's. 




Here -- on the upper shelf -- are the 3 LS2 coils that are firing the trailing 2's.




You can see what a compact 9 coil module Matt designed. Its very accessible and provides short, easy, direct runs to the plugs.




Really nice work.




4-19-2013


Here are some shots of the engine with both the coolant and oil hard pipes installed and the coils on. Now, its stating to come together the way I saw it in my head.  




I really like how clean the engine with the hard pipes looks. Kind of factory?




4-22-2013


On the start up today. We are a couple of weeks behind schedule, but, as I said before, Logan is starting it up with the modified stock 20b intake just to get it running and put some miles on it while he finishes the intake. Designing, installing, and getting the secondary butterflies to work is an effort and will probably take Logan and Matt through the week to get the intake ready to install maybe this coming weekend. Also, while we are going to use the RaceReady cutout, Logan thinks the butterfly will fail due to heat and so we will need to make another butterfly out of Incolnel to be sure the butterfly controlling the secondary exhaust pipe won't warp due to heat. These are all new things for us that haven't been done before -- in the case of the secondary intake butterflies and to a somewhat lesser degree the dual exhaust paths, triple plugs, and coolant and oiling systems. A lot of fairly novel stuff that we are hoping all works together well. My guess is that we get the basic motor running today, that the intake gets done in a week or so and that the full car with the exhaust working right is done the next week. We've got the event on May 20th at VIR where I get to see how it all works, what it dynos after break-in, and how fast it is on the track.


4-23-2013


Domani never comes...  


Here are a few pictures of the motor as Logan is going to run it in while he builds the intake for the ITB's





The alternator mounting was really done nicely... Love the tensioner. And, while not every one has been changed out -- yet -- notice the screws and bolts.



I can almost see the motor now done with the ITB's on it... Enough foreplay, already, Logan and Matt. Get those ITB's on there! 


Here's a start up video. Motor sounds healthy and everything seems to be working so far. Hopefully we see the intake and ITB's on next week.



http://s254.photobucket.com/user/fd20na/media/Gordon%2520R1%2520files/GOPR0053.mp4.html




Comments

Nice job!

Posted by Diggymart on 3/13/19 @ 9:54:43 PM