LarsV8

Ok so when I got my motor back from the machine shop it included some miscellanous pieces that I can't identify. Any help would be appreciated! They look like sensors for the most part.





I had this labeled as AC compressor to block. Looks like a buddy of mine snapped it and didnt say anything. Do you think it needs to be replaced?

orange94z28

iTrader: (1)

the 4 little washer looking things look like what you put on the banjo bolts for the steam pipe on the back of the heads. The seal on the top left of last picture may be to the timing cover but not 100% sure. Not to sure about the rest but maybe some type of broken sensor but not sure what ones.

darrell hoagland

iTrader: (24)

the long one goes on the oil pan low oil light sensor

ebeard

the red thing I believe is a seal that would go in the timing cover. It looks new though. I think the big nut on the far right and the black piece go together and go in the oil pan as the oil level sensor. The gold thing second form the right i'm not sure about, might be part of a broken coolant temp sensor. There is one in the driver side head for the guage and one in the water pump for the PCM. You could check and make sure you have those. Thanks for labeling the AC Compressor bracket, I was wondering about it earlier today.

Gojira94

iTrader: (4)

Far left > water pump drive seal
4 washers are from the steam pipe between the heads
Black thing- (?)
Far right looks to be low oil level sender (oil pan, left side)
Second from right appears to be temp. sensor (left head between cyl 1 & 3)
Top middle looks like knock sensor...

Replace that bracket...

See if you have any holes that appear to be missing things. You may not be missing anything- these may be leftovers returned as a courtesy.

1badzee

iTrader: (12)

top middle is a broken oil pressure switch. Ask me how I know

and the black thing is part of the oil level sensor (that goes into the pan).

Gojira94

iTrader: (4)

And that's the rest of the story.

ebeard

Does that bracket bolt up to the motor mount?

jester1614

iTrader: (13)

no its above the motor mount on the passenger side. dont quote me on this but i think the back of the ac compressor bolts to it

LarsV8

Heh, alright cool. Sooooo:

1.) The new looking seal on far left is water pump drive seal. This makes sense because I had the machinist seal the timing cover since I am using an electric pump. Don't need.

2.) The four washer looking things go the steam pipe. I don't even know what the steam pipe does. Is it paramount for the engine? If so I probably should replace these.

3.) Top middle (silver with black inlet) is the oil pressure switch. Needs to be replaced. My oil pressure read off the charts always since way before the rebuild.

4.) The long black plastic piece is the low oil sensor that goes into the pan. Do I need to drop the pan to get it in or does it slide in from outside? Needs to be replaced.

5.) The gold piece is a temperature sensor that goes between the 1 and 3 cylinders. Needs to be replaced.

6.) The thick right piece is the low oil level sender (oil pan, left side). Needs to be replaced.

7.) Bracket is AC compressor, needs to be replaced.

Thanks guys, hopefully I dont get gouged on all this stuff LOL.

monster81

2.) yes u need 4 new seals (gm# 10108689)
4.) no u dont need to drop the pan,it just slides in.

MasterTomos

iTrader: (15)

replace the AC bracket, you probably wont be able to do it once the motor is in the car, so just play it safe

1badzee

iTrader: (12)

Number 4 and 6 is supposed to be one piece lol. Yours is broken

Gojira94

iTrader: (4)

For #2, see if there is already a 3/8" (approx dia.) tube between the heads on the back side, then turning and running along the pass. side of the intake. They might have already replaced the seals ('washers') for you, depending on the level of assembly they did for you.

Got any pics of this engine you'd like to share?

LarsV8

Heres a thread with tons of pics

https://ls1tech.com/forums/lt1-lt4-m...-overhaul.html

I'll take some more when I get off work of the specific sensor areas to see if anything is there.

Gojira94

iTrader: (4)

Oh hell yeah, I did see this but missed the final round of pics. I do see the steam pipe on the assembled engine. I can also see the temp sensor on the head (on the table) but missing on the assembled engine (last pic, first post).

Damned fine job... you're gonna love it.

LarsV8

Okay so I think I confirmed what you guys were saying. I just need to know if I have the right part numbers:

Oil pressure sending unit - 10201491
Also is this piece the long black piece and the silver fitting as well?



Temperature Sensor Gauge - 25037332



Oil Level Sensor - 12603782



Does anyone have the part number for the AC bracket. Im a little confused on that one. I thought it mounted up on the accessory bracket.

Finally is Cromer still the best place to get replacement GM parts?

SS RRR

iTrader: (2)

Did they put that thing together with a sledge hammer?