[Alka panwar]

Hello everyone , after setback on Honda Civic Turbo project ( basically a non starter) ,want to discuss what options we have for a Turbocharged Harley Davidson. I just acquired preowned Superlow 883 for cheaps .

[Alka panwar]

Atleast one project got going .
Got brand spanking new Garrett Gt20

[Alka panwar]

New screamin eagle hi flow injectors arrived! Better known as Red band injectors .

[Alka panwar]

Additional adaptor for pressure sensor and pressure take of for blow of valve. Got the blow off valve also from usa



Better view !

A GM 2 bar pressure sensor will reside here instead of stock 107kpa sensor. Ofcourse changing manifold sensor brings about its own set of problem , for starters , stock manifild sensor also acts as Ambient pressure sensor , there by determining the elevation you are operating the vehicle. That's how efi bikes starts without trouble from Himalaya to sea levels. Changing it to 2 bar means ,bike will register even the atmosphere pressure as just half. Quite a bit of work to be done on software front.

[Alka panwar]

This is the custom headers i have welded for turbo project myself, first time trying my hand at thin wall tig welding. Incorporated a flex section for easy fitment. Little bit of grinding and cleaning ,its 304 Ss will come back to shiny life, then will get it chrome plated.

[Alka panwar]

Just completed intake side , only bov left to be fixed on intake manifold.
Whole Turbo setup is not even as protuding as stock hD heavy breather setup.

[Alka panwar]

Finally after Customs trouble , Dynojet power vision is here.so are the clutch upgrade from Barnett!

[Alka panwar]

All stuff sent for chrome plating to delhi bright electroplaters.

[GTO]

Thanks for sharing, Alka Panwar! Moving your posts to a new thread .

Going forward, request to please add captions to each picture. Click here (Uploading photographs directly to Team-BHP) to view our pictorial help article on the same.

[Kosfactor]

Interesting project, how is the compression ratio taken care of now that you have a turbo on it?

[Alka panwar]

Originally Posted by Kosfactor

Interesting project, how is the compression ratio taken care of now that you have a turbo on it?

Its already pretty low on 883 evolution motors. 8.9:1. Pretty much spot on for some boost.

Till chrome parts get here, only thing that can be done is to prep the ECU software for some road tune. Getting started with it today.
ECU tune is like 75% of work of this Turbo project or any turbo project. Plumbing and welding I am sure pretty much any mechanic can do and do it much better, what they don't do well is the factory level ecu tune. Largely responsible for so many turbo projects gone bad. Some people do it with external piggy banks, hoodwinks and what not. Never as reliable as a vehicle running on its stock ecu alone with close loop tune capable of keeping consistent AFR and adjusting Spark timing as per actual available boost.

Problems that need to addressed:-
1. ECU does not recognize any value above 107KPA for incoming air into engine. Will throw a fault code and shut down the engine immediately. Not even a "Limp Home Mode".

2. ECU not compatible with 2 bar or 3 bar or any other specification of Manifold absolute Pressure sensor.

3. ECU takes ambient pressure readings from Stock Manifold pressure sensor , changing the stock sensor changes the whole foundation of ecu tune. Also degrades the ability of ecu to adjust to elevations above seas level.

4. Changing the flow rate of Injectors is another major headache, throws off the whole Volumetric efficiency table for each cylinder, but at least here we know by how much.


5. Volumetric efficiency table will not take any value above 120, when boost hits, even mild values of 6-8 psi, shoves in much more air than the cubic capacity of cylinder ( 150-200% of stock values), getting stuck at 120 is not a good place to be.

I am not even getting started on Spark timings just yet, that in itself is whole god level of trouble. Too many problems to address but at least this tuner is capable of editing every ECU table and can record engine data (Sensor voltages, events, AFR) for data analysis at a further time and rectifications to tune as required at exact RPM/MAP/Temperature point on the tune instead of generic enriching/enleanment of tune in totality. Fingers crossed for 8PSI close loop fault code free operation.

[KMT]

This is a very interesting thread. Thanks for sharing.
Out of curiosity, how did you decide on the specs of this project.
Did your wksp/tuner advise you or do you have this knowledge yourself.

[Alka panwar]

Originally Posted by KMT

This is a very interesting thread. Thanks for sharing.
Out of curiosity, how did you decide on the specs of this project.
Did your wksp/tuner advise you or do you have this knowledge yourself.

I am only the tuner, that's the only thing i know to do well enough. Workshop is not mine, only tried my hand at some TIG welding ,its not even a commercial workshop.
Target is hitting 3 digit hp at around 10psi, having an additional 8psi tune for daily running.

[gauravanekar]

Eagerly waiting for your next post @Alka Panwar. Out of curiosity, I wanted to know how did you decide on what bike to choose for your project. Is there any specific reason for choosing this bike?

[Alka panwar]

Originally Posted by gauravanekar

Eagerly waiting for your next post @Alka Panwar. Out of curiosity, I wanted to know how did you decide on what bike to choose for your project. Is there any specific reason for choosing this bike?

Was looking to get a Gt650 but then there was no turbo project in mind. Initially was gunning for Civic turbo, couldn't find a tune gadget that could match Hondata in price bracket ,but hondata does not support my vin number. Got offered this one, Researched a bit about Harley turbo projects, found power vision from dynojet and it all began. Apparently all HD bikes are pretty much same in way their ECU operates so pretty much any of them can be Turbocharged with very decent results.