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PostPosted: Thu Nov 11, 2021 2:00 am 
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TBI Slant 6
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Joined: Tue Aug 19, 2003 3:52 am
Posts: 195
Location: Helsinki Finland
Car Model: 1966 2D Dart
I am building a 170 cuin slant for turbo use. I will use Felpro gasket as they are widely available.

HOW MUCH BOOST a stock compression slant can handle without any special rings on the block/head surface?


E85 fuel and EFI with closed loop O2 sensor => well controllable burning process without detonation.

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1966 Dodge Dart under construction. 225=> 170 turbo (MPI).


Last edited by lgu32 on Fri Jan 14, 2022 4:38 am, edited 1 time in total.

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PostPosted: Thu Nov 11, 2021 5:03 am 
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Location: Blacksburg, VA
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It all depends on the tuneup and avoiding detonation. My guess is around 12-16 psi.

Lou

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PostPosted: Fri Jan 14, 2022 4:12 am 
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TBI Slant 6
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Posts: 195
Location: Helsinki Finland
Car Model: 1966 2D Dart
Ok I'll try stay below that point. The T3/4 I have has 0.8 bar setting as stock. It is about 10-11 PSI.

Here it is pre-installed. There was room enough for everything thanks to slanted engine.

Image

Image

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1966 Dodge Dart under construction. 225=> 170 turbo (MPI).


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PostPosted: Fri Jan 14, 2022 5:04 am 
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Looks like nice work so far. Glad to see you have EFI installed. Best wishes for the rest of the build!

Lou

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PostPosted: Fri Jan 14, 2022 5:45 am 
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TBI Slant 6
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Joined: Tue Aug 19, 2003 3:52 am
Posts: 195
Location: Helsinki Finland
Car Model: 1966 2D Dart
This car was my test bench for I build an analog fuel injection system long time ago. It has now replaced with Maxxecu (ECU).

I have 4.10 gears and 26" tires and 5500 rpm at the end of 1/4 mile. I thought a 170 is safe for more RPM but I have to get the torque kept ...

Turbo setup will have 7 (seven) fuel injectors. All are equal in size...

But where to put the 7th?

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1966 Dodge Dart under construction. 225=> 170 turbo (MPI).


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PostPosted: Sat Jan 15, 2022 2:15 am 
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Supercharged
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Location: IRWIN PA
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Anti-lag for the 7th injector?? :twisted:

Greg

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PostPosted: Sat Jan 15, 2022 5:38 am 
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TBI Slant 6
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Joined: Tue Aug 19, 2003 3:52 am
Posts: 195
Location: Helsinki Finland
Car Model: 1966 2D Dart
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Trying use E85 pre spray for cooling. When sprayded just after turbo output it meet the hot air where ethanol will boil - similar to methanol & water mix spray but this uses same fuel (only E85 with 70-85% ethanol) as the 6 sequential injectors.

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1966 Dodge Dart under construction. 225=> 170 turbo (MPI).


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PostPosted: Sat Jan 15, 2022 6:36 am 
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Joined: Sat Oct 19, 2002 12:06 pm
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Location: Silver Springs, Fl.
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Are you using a fuel sensor? Here in the states, the ethanol percentage varies greatly. E-85 is a "max" of 85 %. It can be a lot less.

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Charrlie_S
65 Valiant 100 2dr post 170 turbo
66 Valiant Signet 225 nitrous
64 Valiant Signet
64 Valiant 4dr 170


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PostPosted: Sat Jan 15, 2022 8:42 am 
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TBI Slant 6
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Joined: Tue Aug 19, 2003 3:52 am
Posts: 195
Location: Helsinki Finland
Car Model: 1966 2D Dart
I am planning to add a flex fuel sensor because the availability of E85 is not good at all areas. For E85 ethanol percentage the continuous O2 sensor feedback is enough. I am using a AFR table as the target and it works well.

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1966 Dodge Dart under construction. 225=> 170 turbo (MPI).


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