Any updates on blocking off oil squirters?

[95talongirl]

I read that article a while back about Magnus blocking off the oil squirters on the 2g block. Any one have updates on how well the engines held up? Or have you done this and if so what were the results? I currently have my 7-bolt apart and am debating on blocking them off and going with a forged piston of some sort.

It seems like there were no ill effects, so just wondering if there were any recent updates on this..

Thanks!

 

[tenn-gsx]

I havent heard anything bad about it other than an improper blockoff failing or getting debris in the oil ports. Some say its bad because you should keep them for cooling the pistons. I think its more about personal preference. I would rather not worry about one getting stuck open and bleeding off all my oil pressure at idle and killing my mains.

 

[olddsmer]

A lot of people block them off if the bottom end is forged. You can't block them off with cast pistons. Cast pistons retain too much heat and need to be cooled.
I have a manley forged bottom end and I kept the squirters and my oil pressure is fine. It's about 25 psi at idle and runs between 75 and 80 on the road. Any extra cooling is always good in my book.

Regards
Greg

 

[tenn-gsx]

^^^^^ Your correct about the factory pistons. I thought about it while I was typing and forgot to put that tidbit in there.

 

[GsXdSmKingGsX]

I just dont see how its worth the hassle. They're not doing anything bad really.

 

[donniekak]

I would rather not worry about one getting stuck open and bleeding off all my oil pressure at idle and killing my mains.

The problem with the whole oil squirter argument is that a loss of pressure to the mains would spin a rod bearing before a thrust, or main bearing issue. The oil comes out of the block, around the main, into the crankshaft, and then out of the crank into the rod journal. Flow issues show up at the end of a flow path first, not the middle. If all the oil pressure to a main was bled off from a stuck squirter, the rod fed by that main would be totally starved for oil.

 

[tenn-gsx]

Your correct in a sense but the oil starvation will be at both places. If there is no oil there is no oil. I personally just dont care to worry about it so I had mine blocked off. I dont see any harm either way though. It has positives and negatives to both sides of the argument. Just depends what side is more concerning to you.

 

[JacksonAuto]

To be clear, you're referring to the blocks with the oiler "jets" behind the main bearings and NOT blocking off the oil squirters that are found in the 6 bolt blocks, right?

 

[tenn-gsx]

I personally am talking about a 7 bolt with the oil jets. I should have specified that.