z6 and a6 block differences....
 

i thought the z6 and z6 blocks were the same so was going to switch everything out of an old a6 block into my z6 block which has no crank....well everything seemed to fit right except when i went to put the thrust washers in...it was really loose on one side and i couldn't get the other one in place....are the cranks different??

Re:z6 and a6 block differences....
 

Cranks are the same. As far as the blocks, they should be almost identicle. I bet chris would know for sure.

Re:z6 and a6 block differences....
 

who's chris? i was pretty sure the cranks were the same! i had the girdle on, rods bolted up, oil pump and rear main seal on when i realized i forgot the thrust washers, but when i took the girdle off to put them on they wouldn't go in...everything else went on fine.

Re:z6 and a6 block differences....
 

Well it maybe a bit tricky to put the thrust washers in with both the seals in? you should be able to move the crank back and forth. Use a large prybar to shift the crank where you need it to go. And roll the thrust washers in. (remember the oiling side goes towards the crankshaft)

Jeff

Re:z6 and a6 block differences....
 

brb going to solve this!

Re:z6 and a6 block differences....
 

these two blocks are exactly the same except for one has a oil control valve in the block (a6) and one has it in the head (z6) hince the reason when you do a z6 head on a a6 block you need to remove the one in the block of the a6.

Re:z6 and a6 block differences....
 

he's right i just got the whole thing back together thanks

Re:z6 and a6 block differences....
 

i put it in today and it ran like straight ass, it didnt even want to idle. so i pulled my computer outside and hooked the zdyne up and messed with it for an hour and a half and got it so it ran halfway decent. but i don't understand why it wouldn't just run off the same fuel and spark maps that i was running on the stock a6 motor??

Re:z6 and a6 block differences....
 

Holy ---- mikey, you need a laptop!! :P

Re:z6 and a6 block differences....
 

that would mean if you put a Z6 head (mini-me) with z6 pistons in a a6 block we would have the same c/r which is 9.2:1???
heard mini-me had higher compression...

Re:z6 and a6 block differences....
 

the block itself is the same, the pistons are different which is why you get different c/r's.

Re:z6 and a6 block differences....
 

did you re-use the bearings from the z6 block, or did you size up new bearings? Possibly the differn't blocks have differn't main bearing sizes?

Re:z6 and a6 block differences....
 

i swapped the bearings from the a6 block, it has all the a6 internals ecxept for the girdle from the z6. so i think the mains are the same

Re:z6 and a6 block differences....
 

not if it's a z6 block w/ a6 crank/rods. you may need to plastigauge that thing.

whats your setup, car, obd?, ecu? head, intake manifold??

Re:z6 and a6 block differences....
 

im running a z6 block and girdle, a6 crank pistons rods bearings, y8 head, 88si intake manifold obd0, zdyne secu

Re:z6 and a6 block differences....
 

quite the D-series slut arnt you? ;)

Re:z6 and a6 block differences....
 

Yea hes a dirty D slut!! But not for much longer! ::)

Give me all your parts mike! ;D

Re:z6 and a6 block differences....
 

i prefer to be called a -----. sluts are nasty creatures ;D

Re:z6 and a6 block differences....
 

actually there is a small difference in the blocks. the z6 water pump is slightly smaller than the a6 water pump and cannot be interchanged although they will bolt up the same.

Re:z6 and a6 block differences....
 

-----s get paid. lol.