86 RX7 Turbo LM7 and Megasquirt EFI

[mobythevan]

A couple new pics for you guys.  Got the turbo mounted on the drivers side.  Got my new fuel rails and injectors installed.  Switched to truck round coils becuase they mount higher on the valve covers for clearance with manifolds flipped upside down.  Also used two driver side valve covers, easier crank vent that way.  Still have to finish putting the wire harness in loom, but its getting there.  Notice that I moved the relay box back behind the strut tower.

4 inch downpipe is in there.  Started the FMIC piping.  I removed the stock fuel lines and vent line.  I'll run new ones now on the pssgr side of the car now.   

woo hoo, starting to get excited.  All of the sudden I feel like I'm on the downhill slope.





I got the 8.8 in the car.  Still have to finish the watts link and make the lower arms adjustable.  I dropped the driveshaft pieces off today to get it shortened.

[mobythevan]

Passenger side mounting of the alternator.  I used a timing belt idler pulley from my bucket of parts.  I think it cam off my Camry.  It is wider than I needed, but it works good as the proof of concept. 


Another view of the alt mounting.


Upper IC pipe. 


FMIC, I have some concerns with this, but I'll see how it works.

[mobythevan]

The 8.8 install is completed.


More pics from the weekend:

Went back through the wiring and combined the harnesses


Interior, still stock


Transmission cooler electric fan, since I have the trans brake


8.8 installed, watts link, rear is hanging all the way down in these pictures


245/50R16 Drag Radials for testing purposes


300zx NA wheels

[mobythevan]

cut a hole in the airdam to fix cooling with the big FMIC blocking the original flow.




Mocking up location for the odyssey battery.


Couple pics of the 8.8 sitting on the ground.




I got my oil drain line installed on the turbo.  I finished all the hot pipes last week and went to install them last night but realized didn't have a T6 turbine inlet gasket.  I put that on order.

Last things to fire up:

1.  Install plug wires
2.  Connect fuel lines to rail/FPR
3.  Install battery tray
4.  wire dropping resistors for injectors
5.  connect wideband to megasquirt

I have not installed the wastegate on my hot piping yet, but I am going to fire it up and test a few things first.  Then I'll get the WG installed.  There is no danger of accidentally building too much boost with this setup during testing. 

Here you can see how the flex joints are installed for each side of the engine.  The pssgr pipe goes low under the pulley, the driver side goes up and then down the front of the engine.  Both sides use the same type of stock stainless manifold, I bought two sets to get two matching pieces.  I don't remember mandrel pipe loosing much flow at all on a 180 bend like you see in the pictures.  I am waiting on the T6 gasket and then I'll snap a couple pictures of how the pipes route inside the engine bay.

[mobythevan]

I started and drove the car on June 7th, then went on vacation for a week.

Got back and drove the car again on June 14th.  Then basically let the car sit for a couple weeks while I caught up on other house projects.  Went out to start it for my dad so he could check it out, rev'd it twice and it just died.  I am not getting a crank signal to MS.  I borrowed a scope from my friend today and will try to get it running again this weekend.  I have not installed the wastegate yet.  It is building boost around 3500-3800 rpm.  The car sounds awesome with the Z06 cam.  It surges at idle like a blown monster truck engine because the injectors are too big.  So a little more work, but it is darn close now.  I need a BOV. I alsoneed a second fuel pump so I can move to E85.  Hoping to see it make around 700hp at 14psi on E85.

UPDATE: found that crank sensor connector came loose so that is why it died.  It is running now.

[mobythevan]

OK, and then the summary of the car for the last couple years. 

I destroyed the T6 turbo by having too small of an oil supply line.

I am going to replace the turbo with a Borg Warner s400. That is a T6 frame bolt in replacement and supports ~900hp. Should spool earlier with 1.10 AR Turbine housing.

In the mean time I put an exhaust pipe in place of the turbo.  I am thinking of putting a stock converter on the powerglide and driving the car non-turbo this summer. Its a 5.3 with an LS6 cam so it gets around ok without boost. Guess I better put a muffler on it too.

When I get the funds I'll put a T6 frame turbo back on the car and upgrade to megasquirt 3 at the same time.  I need to upgrade to MS2 at least to support the large injectors so I figure might as well go to MS3 and have sequential injection and ignition.

[digitalsolo]

Glad you posted this build back up over here. 

And not glad to hear about the turbo issues, that's a bummer. 

[mobythevan]

I put insurance back on the car this morning and I'm heading to the DMV to gets the plates renewed. 

[mobythevan]

OK, put an S475 turbo and JGS 50mm WG on order today.   

This time I will be using AN-6 oil feed for the large T6 turbo. 

The List of things to do to get this car running:
Install new wastegate
new turbo should be drop in replacement for the old, we shall see
Start tuning

That is it 
I already had everything working on the car with the old turbo.  I think I'm getting excited and if you know me that is rare 




 

[digitalsolo]

Haha, looking forward to seeing how she does all put back together. 

[mobythevan]

I ordered a MegaSquit 3 with expansion board so I can have sequential injection for the 150# injectors.  Looks like there are a ton of good things that MS3 will do.  Can't wait to try it.

[mobythevan]

Got my MS3 put together and starting to play with tuner studio so I can re-learn how to tune with it. 

My S475 turbo came in and the first thing I noticed is that it uses a different type of 5" v-band on the exhaust than my garrett T6 did.  I ordered the new flange and will have to cut and weld on my downpipe when that arrives.

My JGS 50mm wastegate is stuck at UPS, I wasn't home and it requires signature. 

Overall, things are starting to show up and get put together.  I'll post some pics when something significant happens.

[digitalsolo]

Cool beans.    Curious how you like the new MS3 stuff.

[mobythevan]

Sequential fuel and spark with individual cylinder trim on both, 

Closed loop idle control, closed loop boost control, flex fuel, SD card datalogging and all circuits are built for these already on the expander card.  I say F#@& Yeah, and there are a ton of features.  Also, tuner studio is miles beyond megatune. So many things are done automatically for you, like in the old days you had to configure your trigger wheel decoding schemes for LS1, now you just pick LS1 as your engine and all of that is set up for you.

So far I love it, it really is a useable product and not as much that you have to know every detail to get it to work.

[Jax04]

Bump it on up,  anything new here?