Author Topic: 1641cc? (Read 1703 times)

Trevor P · « **on:** May 24, 2006, 09:40:22 PM »

Just tore down one of my spare engines. Was told it was 1641 from the PO when I bought my 62 notch. The pistons are stamped 86.46mm, which would make this a 1620cc, and not an 87mm bore 1641. I thought that maybe they were VW Canada overbores from a reman engine (which this case was at one time) but, they are Mahle brand pistons, so I'm kinda confused.

Bruce · « **Reply #1 on:** May 25, 2006, 02:37:19 AM »

I thought the VW overbored pistons stopped at

Trevor P · « **Reply #2 on:** May 25, 2006, 11:47:13 AM »

The reason I ask is cause the rings need replacing, but everything else checks OK, other than the cylinders need honing. So where the heck does a guy get rings for these odd balls? I will take the vernier to them tonight to make sure they are stamped correctly.

Geoff · « **Reply #3 on:** May 25, 2006, 11:50:32 AM »

Hmmm good question, last time I tried VW for their oversized rings they were more than double the price of new pistons.

Trevor P · « **Reply #4 on:** May 25, 2006, 04:02:05 PM »

Correct you are Geoff. I just checked on ETKA, and they do list an 86mm and an 86.5mm. They are around $30-$40 per ring!

And also NLA :wacko:
Looks like I may be investing in a new set of P&C's for this engine. Unless...someone has a set of NOS 86.5mm rings laying in their stash. I really hate to throw these P&C's out, cause they are still in real good shape.

Cameron · « **Reply #5 on:** May 26, 2006, 10:54:23 AM »

Hey Trevor!

Find some catalogs (or websites) for ring manufacturers, Hastings, Deves, Total Seal, etc. Go through them. and I bet you'll find something that will fit. Buy from one of the ring distributors, and it will be a lot cheaper than VW.

egspot · « **Reply #6 on:** May 26, 2006, 11:07:03 AM »

Quote

The reason I ask is cause the rings need replacing, but everything else checks OK, other than the cylinders need honing. So where the heck does a guy get rings for these odd balls? I will take the vernier to them tonight to make sure they are stamped correctly.

What is \"honing\" ?

Trevor P · « **Reply #7 on:** May 26, 2006, 11:41:20 AM »

Thanks Cam...never even thought of that to be honest. I measured these, and they come in at just a hair over 86mm.

Egspot...Honing is a process used to reestablish a cross hatch pattern (fancy way of saying lots 'o' tiny scratches) in the cyl. bore for oil control. Basically looks like 3 fingers with fine grit stones on them that are spun with a drill.