Miata Turbo Forum - Boost cars, acquire cats. - Ted75zcar's questionable logic

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Ted75zcar's questionable logic - the '91 compound turbo-super

So, I think I would like a single consolidated spot to record various random aspects of my project. I have been working on this for several years now. There are bits and piece scattered throughout the forumverse.

At a high level, the car that will hopefully be back on the road this summer is a '91 Mariner with a 1.8 swap, compounded turbo-super. I am using a NA block, but it does not have the second oil feed, not sure what year beyond that. I am also using a VVT head and VICs intake. Guts are all good stuff, wiseco 8.5's, Carrillo super-A, ST heavy doubles with 1mm OS In/Ex (Inconel Ex.). FI - Garrett GTX2867R, Begi mani and long tube divorced, MP62. Drive-train - FM2 clutch, 6-speed, 4.1 LSD, '94 subframes. Stops - FM BBK (4-wheel). Suspension - FM2.5. Grips - Dunlop Direzza DZ101 on Konig Helium, 205/50/R15 EM - MS3PRO

This car has to date been exclusively street driven, I may at some point take it out for track days, but it will never be a tracked or raced car.

I am in the process of building the second version based on the parts above. The first version served as a proof of concept. It was based on a stock bottom end 1.6 with a fair amount of head work. FI started as a GTX2867R - OA2076, but the turbo had some significant issues and was swapped out for a 48trim GT2871 churbo. EM - MS2PNP. I drove this setup for about 6 months and it was a blast. I also discovered several design opportunities, and quickly ran out of rod. Here is a VD plot of the 1.6 version

http://i66.tinypic.com/5lz6za.jpg

I think that this is the last pic taken of the 1.6 setup prior to dismantle

http://i67.tinypic.com/2nslv84.jpg

So far this winter I have moved the evap canister to the driver side rear wheel well, sorry for the rotated picture, will need to learn how to get it to not do that ...

http://i66.tinypic.com/2ed8p6g.jpg

re-factored the fuel system component locations

http://i63.tinypic.com/egwcol.jpg

added 27 channels of CAN based acquisition (tinyIOx) - rotated again, WTF, tinypic can SMD

http://i67.tinypic.com/24zamwo.jpg

and am going through the head, figured the rotation thing out

http://i68.tinypic.com/13zboys.jpg

Block is at the builder now, ton of stuff to do before getting it back on the road.

Here are a couple of fun-ish visuals from an excel tool I created to calculate seat dimentions for my 5 angle cut. The first image is at 0 lift, the second at 0.025

the second two show the stock valve vs the OS valve on the 5 angle at 0" and 0.025" lift

I am a nerd

http://i63.tinypic.com/12504ec.jpg

http://i67.tinypic.com/qowrab.jpg

http://i67.tinypic.com/wasfiu.jpg

http://i67.tinypic.com/5bqsyp.jpg

and here is some eye candy from a MATLAB script I wrote to characterize the MP62. The MP62 compressor map doesn't extend far enough into the operating regions I am concerned about, and some of the information there is hard to extract (like VE).

http://i67.tinypic.com/2929x68.jpg

http://i63.tinypic.com/34no8lz.jpg

Forgot how much of a PITA it is to cut these seats by hand. 1 down, 15 to go ... pretty darn happy with the lap line results though

http://i67.tinypic.com/jqqs1c.jpg

This is hilariously complex and very cool.

Quote:

Originally Posted by Savington (Post 1398094)

This is hilariously complex and very cool.

complex? Psshhhh naw....

thanks!

and if somebody fixed my image rotation up there for me, you the boss

What are you doing with the 1.6 head???

Fun. Fun. Fun. Enjoying this thread.

Sub'd, will be watching this one for sure! I like the valve pics showing lift with the angled valve job, pretty cool!

Looks good! Will v2 still use a turbo blowing into a supercharger?

Quote:

Originally Posted by PSI (Post 1398149)

What are you doing with the 1.6 head???

undecided

Quote:

Originally Posted by oreo (Post 1398196)

Looks good! Will v2 still use a turbo blowing into a supercharger?

yep. It worked out really well for me, and I think I can live with the maximum boost limitation. Plus, I will be able to leverage the V1 charge piping, which is big. I am switching from a twinscrew to a roots, I think the roots is actually a better option.