Four stroke?I know someone who sent their iron lined alum cylinders to Millenium for boring and Nikasil coating to reduce wear. Its been raced for years and seems to work well. Wear was nearly eliminated.
Norton 750 twin bored to 73.5mmFour stroke?
2-stroke?
Millennium coating failed repeatedly on my iron bore RZ jugs. Peeled off.
I had great hopes.
All the liners I've looked at for Nortons have been spun cast iron. And just so we're all hip on 4000 year-old tech: iron+carbon=steel. (shakes head...)However when barrels are lined, I suspect the liners are usually steel - not cast iron. Cast iron is full of carbon.
I would just go for the Molnar cylinders like you did. I currently have 750 Maney cylinders with iron liners.Have you considered putting an aluminum liner in the iron barrel and have that coated? I discussed this with the Millenium specialist, who was willing to give it a try. They would prepare the sleeves as well. Certainly an experimental undertaking.
I backed off and bought Molnar's alu barrel instead, which Millenium later plated. No experience with longevity of their plating as yet.
- Knut
I had a E-series Mercedes V6. The bores had Nikasil or similar embedded in the aluminum block's bores. One doesn't bore these engines and put oversize pistons in. I don't know how long they run. Mine had nearly 200,000 miles when I sold it and no sign of oil consumption. Aside from the running gear, the rest of the car was a minefield of built-down-to-a-price problems with wiring and body hardware chief amongst them. This was during the forced marriage with Chrysler. That said, my GM Suburban has 210,000 miles and no sign of oil consumption. I don't know what the block is made of or if the truck engines (7.4) are sleeved with something amazing."Bore tech" used to offer a carbide process that was actually embedded into the cylinder wall metal and wouldn't peel off. It worked great was highly recommended for eliminating bore wear. But the owner retired and they closed shop which is a great loss to this industry. Seems a no brainer that someone else wouldn't pick it up and offer it.
Not to be confused with the gun products company which is still is buisness.
I ran my A4 VW for 636,000 miles.I had a E-series Mercedes V6. The bores had Nikasil or similar embedded in the aluminum block's bores. One doesn't bore these engines and put oversize pistons in. I don't know how long they run. Mine had nearly 200,000 miles when I sold it and no sign of oil consumption. Aside from the running gear, the rest of the car was a minefield of built-down-to-a-price problems with wiring and body hardware chief amongst them. This was during the forced marriage with Chrysler. That said, my GM Suburban has 210,000 miles and no sign of oil consumption. I don't know what the block is made of or if the truck engines (7.4) are sleeved with something amazing.