[knife]

i have a audi 2.0 block and i was thinking of putting a 8 valve gti head on but every one
tells the compression would be to high but do not say what it would be it will be used for racing only
some one said around 15 to 1 the pistons do come above the deck .
Jay

 

[A1Rocco]

Re: whats the compression on 2.0 block 8v head (knife)

Jay, if you are talking about a late 80's Audi 3A block with a solid or hydro lifter VW 8V head it will be 10.5:1 compression for either head. This is the set-up I will be using.

 

[knife]

Re: whats the compression on 2.0 block 8v head (A1Rocco)

great that will work for me i thought that it would be higher

 

[knife]

Re: whats the compression on 2.0 block 8v head (knife)

oh the block is a 1984 audi
Jay

 

[A1Rocco]

Re: whats the compression on 2.0 block 8v head (knife)

What 2.0L did Audi have in 84, what car was it on?

 

[ABA Scirocco]

Re: whats the compression on 2.0 block 8v head (knife)

When they tell you the compression ratio will be too high they are talking about an 8v head on a 16v block. The 8v head on an 8v-2.0L Audi block works great.

 

[A1Rocco]

Re: whats the compression on 2.0 block 8v head (ABA Scirocco)

Correct me if I'm wrong but the 3A started in 88. Never heard of an 84 2.0L.

 

[knife]

Re: whats the compression on 2.0 block 8v head (A1Rocco)

i cant figure out what it is. the crank is a audi only and i cant find the block casting numbers
in the AERA casting books. the crank is a 3d casting on the side of the block i found 2 stickers
that say it was remaned in canada for audi and the pistons do come above the deck at least
.010 going by the bore and strock it dose come up to a 2.0 and it did have a dohc 16 valve head
on it.
Jay

 

[ABA Scirocco]

Re: whats the compression on 2.0 block 8v head (knife)

If the pistons are dished in the centre it's an 8v, if they have a notched cut-out for valve relief it's a 16v.

 

[lotus7]

Re: whats the compression on 2.0 block 8v head (knife)

Pretty interesting audi block. A1rocco, did you get the twin cam in the 90 or so Audi coupes in Canada?

 

[A1Rocco]

Re: whats the compression on 2.0 block 8v head (lotus7)

Ireally have no idea what was available here in the different Audi models becuase they are incredibly rare. I don't even know if I've seen and Audi 80 or 90, and then there's the 100 aswell. In not even sure we had all three models. I couldn't tell you what they llok like and that's rare for me cuz I know my cars pretty good.

 

[citat3962]

Re: whats the compression on 2.0 block 8v head (A1Rocco)

If it's a 16v twin cam then it's gotta be the 90 16v.......if its an audi I mean/... So whered you get this motor that you never saw the car it came out of?

 

[A1Rocco]

Re: whats the compression on 2.0 block 8v head (citat3962)

I don't think we ever had Audi 16V's here but perhaps the 9A was available here is one of them. As I said there are very few Audi's around here in those models. We see S4's, or other larger ones.
My block is a common 3A bubble block. There were lots of those available in the early 90's thru places like RPI, and several of the other parts houses around greater Vancouver. I think mine originally came from RPI, was used for 15,000km, then somehow became the property of the guy I bought it from as a short block who made a living fixing and modifying VW's locally. His partner and friend at the time was the present owner of RPI, Dustan Woodhouse. I bought it for $1300 CDN and rebuilt it with new german bearings and rings. Had it balanced and it's been in storage since 93. Still need more stuff for it and to finish the head with a cam and a valve/seat grind. KS, exhaust stuff, motor mounts etc.