1981 LTD1000 changing the cylinders to 83 Kz1100.

This is a 81 ltd1000 with the J1 motor. I have found a 83 kz1100 cylinder and factory pistons. Is there any gottcha's to doing this swap?

get a different set of pistons yours have the 17mm wristpins and the 83 has the 18mm wristpins

lindseyss wrote: This is a 81 ltd1000 with the J1 motor. I have found a 83 kz1100 cylinder and factory pistons. Is there any gottcha's to doing this swap?

I have a KZ1100 cylinder and pistons mounted on one of my J motors wrist pins are 17mm so plug and play, just use the 1100 gaskets

Puffin wrote:

lindseyss wrote: This is a 81 ltd1000 with the J1 motor. I have found a 83 kz1100 cylinder and factory pistons. Is there any gottcha's to doing this swap?

I have a KZ1100 cylinder and pistons mounted on one of my J motors wrist pins are 17mm so plug and play, just use the 1100 gaskets

Your both right, lindseyss have you measured the 1100 wrist pins?

I was told the 81-83 on the kz1100 had 17mm pins but the 84 up had 18mm I will measure them.

I measured the pins and they are 17mm. What I have been told is 81-83 kz1100 or 81-82 gpz1100 cylinder and pistons will work.

18mm is the GPZ 1100. 17mm for the KZ, LTD, CSR, Spectre, Shaft Drive A3 sport touring.
If your bore/ pistons are worn, you can get a big bore kit for the 1100 block.

GPz 1100 B1 and B2 (KZ 1100 81 and 82) have 17 mm wristpins, 83 and up (the ZX 1100 UniTrak models) have 18 mm wristpins.

I want to use my kz1000 head just had everything adjusted on mine. Do I have to go to the 1100 head? The compression will be greater with the 1000 head I think?

You can use your 1000 head they are of the same casting

I talked to a guy in CA and he said this is the easiest way to increase performance. It is only a cylinder a piston swap. Everything else is the same. So I have my winter project.

I was told this was the way to go. It is more rideable than boring the 1000 cylinder and changing to 1075 pistons.