The Holset he341 3.0L

[Ondonti]

Oil pump on the junkyard motor is smoked. Out of tolerances in all measurements. Probably why the bearings were bad. I thought it just ran low on oil. Shortblock was probably heavily abused oil change wise.

[RoadWarrior222]

Booo

Gets harder as cars get older, figuring out why exactly it went to the yard, before you bother pulling stuff. 'coz something 10 years old, probably ain't there for a dead battery, whereas something approaching 20 might be.... or it it might be "proper fugged"

[Ondonti]

[Vigo]

sweet! How do the crank journals look? I ask because of those bearing pics.

[Ondonti]

sweet! How do the crank journals look? I ask because of those bearing pics.

Not minty

[Ondonti]

400 miles on it, been driving it to work this month. Put the boost controller back on after I changed the oil at 200 something miles.

[Ondonti]

I am piston, hear me roar! Oil pan wins.

[Sundance 6g72]

didnt spray the headgaskets this time around?


edit: nevermind... those pictures didnt show up the first time

[Ondonti]

Modified the headgaskets to balance flow for teh win

[Vigo]

That pic with the drillbit and the piston, are you just cleaning the drain hole or enlarging?

[Sundance 6g72]

I dont understand why the gaskets dont just match perfect for those passages from the get go

[Ondonti]

That pic with the drillbit and the piston, are you just cleaning the drain hole or enlarging?

Both. I bet lots of oil burning in old abused motors is due to these ports being clogged as every abused 6g72 motor I have seen has NO flow left through these drain ports. I took apart a very sludged up 4.2 Ford but can't remember what the piston drains looked like. All those plastics used in the oil to create variable viscosity by heat range sure ruin a motor when they break down (not changing oil). I think I still question the idea of changing oil just because it has been sitting but I understand oil being bad from use and heat.

I dont understand why the gaskets dont just match perfect for those passages from the get go

They have to be reversable for each side of the block. If they were cylinder bank specific that would be the only way to get things right.

[Ondonti]

Positive thing going on is that the combo exhaust & stock pcv system is working great. The oil pan is actually clean right now. Only leak right now is the turbo outlet which seems to be a perpetual problem.

Negative thing going on, the water pump feed pipe which sits across the block has too much pitting to seal the O ring in the position that it stops at. Have to look for spares or finally try something else.

[Reaper1]

JB Weld is your friend! ;-)

[Irocelectric93]

I had to replace my water pump feed pipe a couple years ago on my daytona when my water pump crapped out. I got a new one somewhere...i might have even found it at the dealer at that time. I've looked around and new ones are no where to be found obviously. I believe my dad was the one who found it and I remember being shocked then that he found one new. I can look through some of my spare 3.0 parts and see if i have a good one lying around.

[Ondonti]

I picked one up from storage and I am going to clean it up. It is from the recent junkyard motor. The one that failed was my spare that was sketchy to begin with. I have not been able to find the parts needed to make a replacement that makes me happy as I wanted something with -AN fittings. If just pipe, I would prefer a 1 piece setup that minimizes leak points. The big complication is the bypass and heater core lines. That and the ~1.57" ID of the water pump inlet is not a size anything is made in. Except maybe this aluminum tube http://www.mandrel-bends.com/catalog...-tube-364.html Make some ridges to hold an O ring in place. Then weld a brace/bracket and add pipes for the bypass and heater core return.


Also found a new one. About $17 so maybe time to buy a couple. I remember long ago wanting to buy one from the dealer and I got sticker shock for the 30 something they wanted during the no money days. I even made someone grumpy over a dealer discount since I wanted to back out and just buy an O ring with a discount.
http://www.rockauto.com/catalog/more...062&cc=1098503

Listed under heating and air conditioning. Sorta ridiculous that its not in the cooling section.

[Irocelectric93]

I looked at rockauto first under the cooling section. Glad you found it though and i'll keep that in mind. I might even buy one just to have around since they seem to always get boogered in the same spot.

[Ondonti]

Finally found the weird one that I owned at some point (not sure where it is).
3000gt automatic transmission SOHC 6g72 had a 1 piece "water pipe" as they call it. I would rather have something like this.
This link will die but I saved the pictures for future reference.
http://www.ebay.com/itm/like/120965201643?lpid=82

[Vigo]

It's good that new ones are readily available.

How difficult is this repair on the spirit with the turbo being on the crossover?

[Ondonti]

It's good that new ones are readily available.

How difficult is this repair on the spirit with the turbo being on the crossover?

...more difficult... I didn't completely remove the turbo I just disconnected the downpipe, outlet pipe, and the crossover/support bolts. Deciding the block water feed pipe was bad really made me grumpy since I then had to remove the intake manifold.

After getting it back together I pressure tested it and it turns out the rubber bypass hose I decided to use that was on the backup pipe had a cut in it near the end so that leaked when testing. Cut off the end to alleviate that leak.
According to the pressure tester and soapy water, there is still a leak at the intake manifold bypass area but the other leak that makes me grumpy is the 1 year old radiator. Not sure if that is my fault from running very low mix % on coolant. We had a cold snap a few weeks ago that got near record lows (for Seattle).
Most awesome leak is how I saw water leaking from a freeze plug in the front head on the driver side. I thought it was coming out of the headgasket at first.

For the pipe, the one I had in storage had corrosion too but luckily the corrosion line was about 1/4" farther inside the pipe. That meant my O-ring would end up sitting on the clean part of the pipe. Filed the heck out of the water pump O ring groove because it was cruddy.

Scariest thing was that I lost a lower intake manifold washer and decided to gamble that it was not sitting on top of an intake valve.

I took pictures of measurements of the water pump pipe. Someday I will upload them.