Turbocharging Miss Blue

[MPlayle]

Here is the start of the new thread mentioned in the "Soliciting Thoughs & Opinions" thread.  Old thread from Lounge

I have started collecting the parts I think will be needed, along with a few spares.

I got in a new set of drop gears from Mini Spares - their EVO series square cut in the selections for an "economy" ratio of about 0.9 versus the 1.04xx I currently have.  I also ordered a new input bearing, since I have to change the input gear.  I also got a couple of clutch oil seals, housing gaskets, and manifolds gaskets.  I am getting the Jet Motors Turbo kit with the complete intake, carb, fuel pump, and fuel pressure regulator.  I am also getting their dual boost/AFR gauge and mounting pod.  I found on ebay a vented rocker cover for the A-Series from a Morris Minor that I can refurbish to have extra venting as recommended.  I am also going to upgrade my ignition coil to a "Flamethrower II".  I can stay with my current distributor since I already upgraded it with an Accuspark module.

The plan is to start the project in November - after the area "car show season".  While doing the performance upgrades, I will also be installing the exterior wood kit as used on some of the Mini Estates from the 1960s.

I will try to post more with pictures as the whole project progresses.

[MiniDave]

I'm excited to see the turbo kit go on, post up lots of pics, please!

BTW, those straight cut drop gears are NOISY! That's why stock ones are helical...

[skmini]

Following.   

[94touring]

What will you be using to create a timing map?

[MPlayle]

No ECU to map.

I will be using my existing 59D4 distributor with the Accuspark module instead of points.

Per Jeremy, the timing should be set for about 18* advance (BTDC) at 4K rpm with the vacuum advance disconnected.

I plan to obtain a new timing light with advance feature and check my current timing at that setting to compare.  I currently have a non-advance timing light that I used to set the current timing at 8* BTDC at 1500rpm per the Haynes manual.

[MiniDave]

Wow, 18* is not much......stock Minis are more like 32-34* at 4K....

[94touring]

Yes so don't do that.  Get with the times and run proper timing. His suggestion is straight out of the 80s.  Spend the money on a 123BT, the blue tooth version that is programmable. I can make you a map in about 2 minutes that will give you vacuum advance, regular timing outside of boost, and vacuum retard in boost. 

[94touring]

Here is a very quick example of a boost map I created based off my bus mapping. type 1 and A series are pretty closely curved with the exception of the vacuum signals and subsequent entry points for vacuum advance.

[94touring]

As a bonus you get a cool dashboard.  Everything is monitored and tuned with your phone. 

[94touring]

Also just looking at his kit, it doesn't come with an intercooler. This is another important factor you must consider. You can either drive in boost as needed, but never too long on hot days, or add a way to cool the intake charge.

[94touring]

Coincidentally I needed to top off my boost fluid in the rx7 just now after taking it for a spirited drive.  You should either install an intercooler or adapt h20 or h20/meth (-20 is 67/33% mixture) to spray into the turbo.  I can show you how this is easily done. I've since converted to oil burner nozzles and made my own adapters for my bus type 1 motor.  Better atomization, great filters, and a clog free design. I'm building an NA race motor for it that will run on pump gas as a result.  The rx7 gets 25psi on pump gas.  Normally limited to 15psi with pump gas but the h20 makes that big of a difference. Rarely have to fill up the rx7 because it only activates at low boost. 

[MPlayle]

In one of the videos about the turbo kit, Jeremy mentions using 28* on a turbo'd 998, so I thought the 18* he said when discussing the purchase seemed off.  That is also why I was going to measure the current advance at 4K rpm (vacuum disconnected) for comparison.

I looked up the 123BT: $575 if ordered direct from the 123 USA division!  Also, I don't have a compatible device for the software.  The only Bluetooth capable device I have is my Macbook-Air running MacOS.  The 123-Tune software is made for either Android or iOS (iPhones or iPads).

[MPlayle]

I plan to keep the boost on the lower side - 8 to 10 psi max.  The afore mentioned video of a turbo'd 998 was also limited to 10 psi max boost.