Author Topic: "LDA" pin modifications also fuel screw (Read 3497 times)

Clintwalker85 · « **on:** January 20, 2009, 10:31:44 pm »

hey just woundering if anyone out there can tell me....or better yet hav pics of how to mod the lda pin or adjust it i have a mk3 1.9 td canadian model with cold air intake no cat and 3 inch muffler with stock downpipe trying to figure out the fuel screw also i located a screw just above the injector lines it has a hole threw the side of it...dident have a red cap on it though...just woundering if thats the right screw...anyone help please..thanks

dillenger1 · « **Reply #1 on:** January 21, 2009, 06:08:27 am »

you wont have the right pin.Get one from a 1.6td.

zukgod1 · « **Reply #2 on:** January 21, 2009, 09:54:14 am »

Sounds like you have found the fuel screw.

LDA pin;
There are some pics floating around here somewhere, you can mod your's but just starting about 1/16" from the bottom then create a ramp.

The top of the ramp is about 1" from the bottom. I don't have one here to give you exact measurements at the moment.

saurkraut · « **Reply #3 on:** January 21, 2009, 12:31:31 pm »

From FAQ: More power for your 1.6TD

Rabbit TD · « **Reply #4 on:** January 23, 2009, 09:28:55 pm »

Quote from: "saurkraut"

From FAQ: More power for your 1.6TD

Is that a gear down there in the bottom ofthe LDA and what does it do :?: Also what do theymean about rotating the pin, it looks the same way from the picture the whole way around to me. I've never seen a picture of one before and how the assembly and the pin work with the pumps internals.

dillenger1 · « **Reply #5 on:** January 23, 2009, 10:14:18 pm »

if you look close you can see the different eccentric on the one side.theres a pin that rides up/down that pin which acts as a temporary "fuel screw"almost,allowing more fuel when the boost pushes on that rubber diaphram.The gear is a "star wheel"It is threaded into the lda.Its a seat for the spring ,which you can screw in or out which moves the seat up or down,preloading the spring.

Rabbit TD · « **Reply #6 on:** January 24, 2009, 04:16:11 am »

Quote from: "libbybapa"

The "gear" is called the starwheel. It adjusts the pretension on the boost spring and so determines the pressure at which the pin starts moving and delivering more fuel. The pin is eccentrically cut. It's not dramatically so, but it is indeed a different angle on the more and less aggressive sides of the pin.

Andrew

Thanks a lot for the picture, I can see how it will make a difference now, I got a feeling I'm going to be playing with that pretty soon