Engine rebuild - interesting find

[Sydwyndr]

Well Syd is down and is going thru a refresh. Well I was told that a NASCAR team (Petty Enterprises) went thru and put a few nascar tricks in the block. Well to tell you some of you may have seen this but this is a first for me. The block has oil squirters built into the mains of the block and the mains have small groves cut into it to feed the oil squirters. The purpose of this as I am told is to pull heat away from the piston to help in cooling. The way it is in there look really good and looks to be a .002-.004 groove cut into the mains. With the main bearing in place it helps direct oil UNDER the main bearing to the groove. Probably the ONLY 109 like this. Motor has great oil pressure, check it out!! Kewl lookin!!

 

[DailyDrifter]

Alot of import engines use them. Your right they are used to cool the pistons. It doesnt look that hard to replicate either. Cool modification.

 

[veedubcrazy]

Beleive it or not, A few VW (flat-four) have those type squirters and work very well...But they did not come from the factory like that....

 

[A2000RICH]

Well Syd is down and is going thru a refresh. Well I was told that a NASCAR team (Petty Enterprises) went thru and put a few nascar tricks in the block. Well to tell you some of you may have seen this but this is a first for me. The block has oil squirters built into the mains of the block and the mains have small groves cut into it to feed the oil squirters. The purpose of this as I am told is to pull heat away from the piston to help in cooling. The way it is in there look really good and looks to be a .002-.004 groove cut into the mains. With the main bearing in place it helps direct oil UNDER the main bearing to the groove. Probably the ONLY 109 like this. Motor has great oil pressure, check it out!! Kewl lookin!!

in the stuff from Turbo Tune I found a fixture with hardened drill guides designed to put those very oil passages in the block------it would have to have at least some affect on oil pressure since it is an additional loss path...........RC

 

[1chance]

Some one posted a vid on a rebuild, and it show them doing this to a 4.1 block for a GN, dont see the great benifit, but every little bit helps.

 

[KWIKR 1]

very cool . for those who maybe interested , here's another very simple mod I came across sometime ago that supposedly also helps direct oil to under the piston to aid in cooling .

Makeshift Oil piston Squirter - NASIOC

Piston Squirter Rod Mod - TurboBuicks.com

 

[BlownV6]

Thats an almost necessary item if you have a lot of vacuum from use of either a big dry sump pump or a vacuum pump. Thats found on almost all
types of engines put the extremes these days. It also helps to keep the wrist pins from gaulding up. Mike

 

[BKLYN2FLORIDA]

off topic question

what is an average labor hours to remove the engine, do an engine refresh, install cam, lifters, new seals, etc, reinstall engine. im trying to get a ball park for cost, i know its only approximate
thanks

 

[Sydwyndr]

what is an average labor hours to remove the engine, do an engine refresh, install cam, lifters, new seals, etc, reinstall engine. im trying to get a ball park for cost, i know its only approximate
thanks

Gimme a few weeks and I will be able to answer that for you. Im doing that exact thing now...

 

[BKLYN2FLORIDA]

Good luck...please let me know, ill be doing min in a few weeks too..