So I'm building this AAZ.. Need some direction..

[CRSMP5]

how to tell what head... ??  giles built this pump.. myke was going for 150-200#s.. it may be bigger.. but knowing this.. cannot use # on pump case...

[Jagerauto]

how to tell what head... ??  giles built this pump.. myke was going for 150-200#s.. it may be bigger.. but knowing this.. cannot use # on pump case...

I don't know much about these pumps.. Or what Giles even does to them. But I know I have an 11mm pump that the aaz's came with. Not even sure what that refers to.. Haha.

[8v-of-fury]

AAZ's did not come with 11mm, they came with 9mm like 1.5 and 1.6's.

11mm was Rover pumps, peugeot pumps, and ALH auto trans pumps.

I am unaware of ANY AAZ with an 11mm pump from stock.

[CRSMP5]

so 8v.. does pump head have external marking??

11mm refers to the plunger stroke/size i beleive.. aka more fuel..

eco diesels have 8mm pump right? others 9mm.. tdi 5-speed = 10mm, tdi auto = 11mm.. just random thoughts there in my head

[8v-of-fury]

Head doesn't have external markings.. BUT removing that three sided plug between the delivery valves will allow you to measure the plunger. Best you can do without dismantling, You'd have to remove the delivery valves too.

8, 9, 10, 11, 12 and 14mm refer to the actual diameter of the plunger. The plunger will be whatever size in diameter. I have seen the stroke (measure B in the diagram) measure from 2.1mm of a Peugeot pump, 2.26mm of a 1.6TD pump and 3.13mm of a 1.9 AAZ pump. I did not measure my rover pump, or the 10mm AHU pumps cam plate.



Bigger plunger, same stroke = more cc of fuel per stroke.

[EcoTX]

Just for future reference here for you...

You can derive the plunger diameter very easily from the 6th digit found in the Bosch part number on the pump.

For example...

1.6TD pump: 0 460 494 182  = 9mm plunger

1.6ECO pump: 0 460 484 ### = 8mm plunger

They used a 0 for 10mm plunger, not sure about sizes larger than that.  1 = 11, 2 = 12, etc perhaps ?

But if someone has taken apart and modified stuff, the only way would be to measure.

Keep it up, lookin' good.

[CRSMP5]

0 460 414 099 is my 11mm rover number

[CrazyAndy]

Nah

Dude, I bought that SAME EGT GAUGE!  Got yours from aircraft spruce as well?  WHat probe did you pick up?  My EGT wire plugs are different from the gauges plugs.

[Jagerauto]

Dam somewhere I read said AAZ came with 11mm pumps.. Or someone told me that. According to the PN its a 9mm. Dammit lol more bad news. That's why I joined this forum. To learn more than I know.

[Jagerauto]

Do you guys think a girdle could be made? I have a buddy that is a welder/machinist at NASA that could prolly make them for cheap.

[R.O.R-2.0]

Do you guys think a girdle could be made? I have a buddy that is a welder/machinist at NASA that could prolly make them for cheap.

head girdle or main cap girdle?

[Jagerauto]

main

[R.O.R-2.0]

people have more trouble keeping the head bolted down, rather than trying to keep the crank in the block..

[RabbitJockey]

main girdles have been made in the past i think there is a card drawing floating around on the forum.

[Jagerauto]

main girdles have been made in the past i think there is a card drawing floating around on the forum.

If anyone could provide me with the drawing I can send it over to my buddy. And get a price.