2180cc from a vw 4 pot block?

itbs and a turbo is absolutely pointless.

 

Previous thread on this:

http://www.clubgti.com/forum/showthread.php?t=225398

Certainly remains uncommon.

 

none of the 5 pot engines came with 82.5mm pistons as standard afaik

 

the 7a is a based around the 9a, the pistons Ive got are the right size, and were used across a number of audi engines. The throttle bodies and turbo idea was suggested by two different people ive met - one a well respected engineer/motorsport/4x4 specialist and the other a well respected very talented nissan engine/motorsport specialist. Im going to give it a go and see what happens and have some fun- thats what all this car building stuff is about right?

can anyone tell me which of the two diesel cranks, 1y, orAAZ i can use? and what i would need to make them fit?

 

1Y Crank Standard 95.5mm stroke


The block needs abit of a fettle for the crank to rotate without having clearance issues. 2kg heavier than ABF/9A 92.8mm Crank


ABF Crank Standard 92.8mm stroke


ABF Eurospec Race Crank 92.8mm stroke

 

1Y should fit no problem.

Someone will need to confirm AAZ.

 

For Information -

The Oil injectors catch on the ABF , due to ABF ones being bigger than 9A & KR Oil injectors

9A oil injectors will be ok .

 

Just to confirm 9A is a short block. ABF is tall.

 

ABF Oil Injectors.

New Oil injectors


Fitted new Oil Injectors with require fettling to give crank clearance

New Main Bearings original VW



Has anybody got pix of 9A Injectors for comparision ?

 

Those are ABF!

He's running a 9A!

 

i know , it was for information and comparison , i know a few people were contemplating using a 95.5mm crank in an ABF.

Thread - 2180cc from a 4 pot (ABF/9A/6A/3A etc)

Can we have some 9A Oil Injector picture to compare thanks.

 

AAZ IDI Turbo crank is the same as 1Y IDI NA crank from my experience.(no trigger wheels, tall blocks)
I am not 100% sure Brooky's pic of a 1Y crank is correct though, as it has a trigger wheel. I think it may be a 1Z TDI crank myself.
It would be good to know if the TDI cranks with trigger wheel, work in an ABF if the trigger wheels can be swapped.

 

I was also informed a 1Z crank is factory forged, while the 1Y isn't?

Can anyone confirm this?

 

1Y is cast that is what i had in the picture.

The Trigger wheels can be swapped , same fixings.

 

The 1Y and AAZ IDI engines do not have crank sensors so no need for trigger wheel. Unless very late ones came with some kind of diagnostic facility that utilised the sensor.
Possibly the cranks are superseded to use the TDI 1Z or AHU ones even though the trigger wheel is not used in the IDI application.
If considering lightening a crank, this is something to consider as the trigger wheel type has an odd shape that means material removal is not equal when machined.

 

really?

it looks as though it is cast in?

ill stick with my 1Y then

 

YES

 

the 9A does not have a crank sensor either.

So... I should go for either a 1Y OR AAZ? it will make no difference? i think i may be getting it lightened anyway

 

Must be it, surely?

http://www.icelord.net/vw/upgrades/collins_2.html