rayqblue94

I have heard that there are some differences in S4 blocks eg. early 87 has "oil squirters" and that some blocks have thicker cylinder walls than others. Is there actually any difference between year blocks for the S4 casting and is there any advantage to these differences .
Thanks Ray Barton

Vilhuer

Nothing major other than squirters. Drain hole at rear of the V in block was changed at some point. In GTS blocks its cast while on at least early S4 blocks its drilled.

On average cylinder wall thickness seems to get thinner newer the block is. There isn't any infication on outside which would tell how thick walls are so last S4 can have thickest block ever.

rayqblue94

Hi Erkka, Thanks for the information, I guess choosing a block is a bit of a lottery, might be best to simply go for the latest one hoping it has less kms.
Ray

mark kibort

did the 86 have the squirters? where are the oil squirters anyway?

Mk

Ian928

My US S3 block have no squirters.

The squirters are drilled into the casting on a ridge in the bottom of the cylinder.

Vilhuer

Only early '87 have them. There are pics in archive which shows what block looks like when they are installed.

mark kibort

why did they stop using them??
ill have to do a search. ive never seen them before (or noticed them)

mk

mark kibort

just checked the thread. wow, there was some heat going on there.

i have the 81H-00004 engine. so, i guess the holbert engine has them . hmm, maybe thats the secret!

mk

Vilhuer

That definitelly isn't it. They will make things much worse.

mark kibort

maybe amzoi allows squirter to work without foaming windage!

mk

Vilhuer

All oil which is elsewhere is away from crank bearings. Amzoil or not.