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Engine Specific Info and Questions => IDI Engine => Topic started by: TimpanogosSlim on January 03, 2014, 09:35:07 am

Title: 1.6D to 1.6TD -- injection pump modifications?
Post by: TimpanogosSlim on January 03, 2014, 09:35:07 am
So I'm going to turbo convert the 1.6D in my '84 jetta when i rebuild it.

Mind you, I still haven't laid hands on the vehicle itself. I still need to tow it home. I just bought it from someone reputable, someone who knows a lot of the same people i do, for not much money.

In the pictures and video, the IP is very, very shiny and the PO indicates that the guy he bought it from replaced the pump. Replaced a lot of things actually running away from the reality that the bottom end needs rebuilt.

I understand that the non-turbo IPs don't have the ability to increase fuel with boost. Am i correct in that?

What are the most basic changes i can make? Do i need a different pump or just some different parts on the existing pump?
Title: Re: 1.6D to 1.6TD -- injection pump modifications?
Post by: 745 turbogreasel on January 03, 2014, 02:49:07 pm

I understand that the non-turbo IPs don't have the ability to increase fuel with boost. Am i correct in that?
Technically, yes but neither do turbo pumps.  Turbo pumps  have the ability to limit fuel while off boost.
Title: Re: 1.6D to 1.6TD -- injection pump modifications?
Post by: TimpanogosSlim on January 03, 2014, 05:28:19 pm

I understand that the non-turbo IPs don't have the ability to increase fuel with boost. Am i correct in that?
Technically, yes but neither do turbo pumps.  Turbo pumps  have the ability to limit fuel while off boost.

good distinction.

is this a modification that someone with above average attention to detail and manual dexterity can make at home with a few donor parts, or do i have to send the pump to someone?

fwiw i hear that zukgod is someone who does that kind of thing sometimes, and he's essentially local to me.
Title: Re: 1.6D to 1.6TD -- injection pump modifications?
Post by: theman53 on January 03, 2014, 06:40:25 pm
I think you could do it. IIRC you need to trim a pin that is a stop on the inside of the N/A pump.
Title: Re: 1.6D to 1.6TD -- injection pump modifications?
Post by: TimpanogosSlim on January 03, 2014, 08:36:26 pm
I think you could do it. IIRC you need to trim a pin that is a stop on the inside of the N/A pump.

I'm gonna have to watch those videos, aren't i?

Title: Re: 1.6D to 1.6TD -- injection pump modifications?
Post by: theman53 on January 04, 2014, 06:08:18 am
Yeah, you probably won't be able to go in blind and figure it out.
Title: Re: 1.6D to 1.6TD -- injection pump modifications?
Post by: libbydiesel on January 04, 2014, 08:32:26 am
I've converted several.  You need the aneroid lid from a turbo pump.  The method I use is to pull the lid.  Next remove the governor shaft, gear and flyweight assembly.  Use a punch to drive the pin into the pump until it pops out.  Chuck the pin in a drill and use a dremel with cutoff wheel to cut it to the length that will let it install flat to the pump body.  Press the shortened pin back into place using a C-clamp to plug the hole.  Replace the governor parts and install the new lid.  Install, test and tune...
Title: Re: 1.6D to 1.6TD -- injection pump modifications?
Post by: TimpanogosSlim on January 04, 2014, 10:52:25 am
I've converted several.  You need the aneroid lid from a turbo pump.  The method I use is to pull the lid.  Next remove the governor shaft, gear and flyweight assembly.  Use a punch to drive the pin into the pump until it pops out.  Chuck the pin in a drill and use a dremel with cutoff wheel to cut it to the length that will let it install flat to the pump body.  Press the shortened pin back into place using a C-clamp to plug the hole.  Replace the governor parts and install the new lid.  Install, test and tune...

Awesome. Thanks!