Angled Injector Thread Pitch

[OM616]

I did a quick search and could not find any posts that identified the thread pitch on the new style "angled" injectors.

I am modifying a straight injector PC to make it an angled injector PC for my 616, and if the threads are compatible with my approach, I would like to use a standard thread, (my current plan is to modify the injector body with a thread of my choice).

I am trying to keep from buying one just to find out the thread dia is too big.

thanks.

[tomnik]

Can you explain more detailed what you intend to do?
Basically the thread is IN the angled PC and not in the separate PC fixing thing as it is on the "old style".
A 616 engine can be upgraded with angled PCs. There is one single type of PC that fits.
On 60x engines the PCs are special. The glow plug hole is different.

Angled injectors on 616: change PCs and injectors
Angled injectors on 617 turbo: way more complicated. The PC shape is different.

I have a picture of a disassembled PC.

Tom

[OM616]

Originally Posted by tomnik

Can you explain more detailed what you intend to do?
Basically the thread is IN the angled PC and not in the separate PC fixing thing as it is on the "old style".
A 616 engine can be upgraded with angled PCs. There is one single type of PC that fits.
On 60x engines the PCs are special. The glow plug hole is different.

Angled injectors on 616: change PCs and injectors
Angled injectors on 617 turbo: way more complicated. The PC shape is different.

I have a picture of a disassembled PC.

Tom

The angled PC that will fit the 616 is expensive and I wanted to come up with a way, short of making a new PC, to have an angled PC for the 617 as well. So I am playing with a 616 PC to see how practical the concept is.

I am basically going to make the upper portion of the stock PC, (where the injector goes), solid and machine an angled bore and new seat.

If I turn down the course threads and cut new treads in the injector housing end, I can get up to 7 degrees of angle. This however requires the use of only these injector bodies. I am wondering what the major diameter of the stock angled injectors is, as that diameter determines the max angle I can get.

I was just wondering what the injector thread diameter and pitch is of the angled injector / PC so I can determine if a standard injector will work. That would allow the use of stock injector bodies, although I think I remember something about the line nut threads being different between the 61X straight and the 60X angled injectors. If that is indeed the case, then I will just modify the stock 61X injector bodies.

[tomnik]

maybe this helps:

http://fmso.de/forum/messages/255412.htm

The angled thread is in the PC this is why you need the thread of the injector at the very low end.
On 617 the PC has no thread for the injector.
Maybe I misunderstood: you want to angle the thread on the injector??

I believe it is M22x1.5

Tom

[OM616]

What I am going to do is make a 617 injector look like a 60X injector. To do this, I will first machine off the 617 threads. Then I will cut new threads into the injector body at the tip, just like the 60X injector.

For the PC, I will make the injector area solid, and machine in new injector threads on an angle, and of coarse a new seat for the injector heat shield to seal against.

When finished, the injector will thread into the angled PC. I will need to modify the 617 lock collars, or buy 60X collars for installation.

I wish I knew what the language spoken in the link. I would like to understand how the duel stage injector works and what the differences in the internal parts do to the operation.

I am really considering going with dual stage injectors on the next 10mm MW I build and would like to have a better understanding of how they work to determine if they will do what I want. I have been very pleased with the modified injectors in the Gen I 10mm set up, but I am curious if there are improvements that can be had with a dual stage injector.

[tomnik]

Let's discuss dual stage injectors separately, I have them installed in my SD.
Language is German.

The reason why I don't like your plan of new thread on 617 injector body is that you can not use the heat shield plates any more. Means these you also need to do custom.
Can't you just cut off the upper part of old angled 60x PCs and weld them to the rest of the cut 617 PC?
I made a thread ring with the 60x thread, machined off the thread of the 617 body as well as a step and pushed the ring on, fixed it by welding.

Tom
(this was how I put dual stage injectors to a angled PC).