Hello has anyone here have experience with running ITM piston rings? About to get into my rebuild and have read some not so great opinions on them. I tried looking for some 0.020" oversized rings and can't seem to find anything but ITM and Hastings.

Where did you see the bad information?

Most of the time a lot of those bad reviews come from folks that don’t know or have no experience installing piston rings.

I was browsing through Church of L Series past posts. Seems to be the same guy preaching it though. I did read somewhere else the "secret" to using ITM pistons is not using their rings and upgrading. Thought I would ask here if anyone wanted to share their experiences with running them on their cars.

I used Hastings on a stock 2.4 but have read a lot about oversized ITM pistons and rings. About half and half good and bad but I do know this guy named Guy that's got about five 240s with Eiji Hosomi at Datsun Spirit built motors. Top-shelf stuff, https://www.datsunspirit.com/engines.

He says the best thing to do with ITM rings is trash them and use Total Seal instead. Here's a thread with some opinions...

Maybe he'll see this, @Diseazd

Edited 5 hours ago5 hr by siteunseen

I don't know who ITM used to be but it looks like maybe only the brand name persists. They don't even have an open web site. Many/most of the old performance part names are just brand names now owned by large conglomerates that source manufacturing to the cheapest bidder.

https://www.linkedin.com/company/itm-engine-components

http://itm.openwebs.com:8080/

Edited 4 hours ago4 hr by Zed Head

Looks like they might be owned or managed by some place called MAPerformance.

They can't even get the acronym right.

https://www.maperformance.com/collections/itm-engine-components

"...For the best selection of engine management parts from ITEM..."

Thanks for the responses. I think I might just go with Hastings rings just to be safe. Seems like its the most cost effective option with reported good reviews.