AJT84

92 lt1. I was trying to remove the water pump at it turns out the coupler was seized and I could not get the pump out. Long story short, this:


Shaft broke... so that seemed like a good stopping point. What will need to be done? Does this bolt to the cam? I have access to FSM but I'm going to stop for tonight. I know this is really bad. Just looking for help, thanks in advance

AJT84

I did see that the water pump drive gear is driven by the cam gear... I think I knew that but it's pushing 2am and I'm a bit groggy. Has anyone dealt with this or have advice? Thanks

antfarmer2

Damn pull the seal then soak it with acetone and tranny fluid 50 / 50 mix mine slide right out.

kg4fku

Item number 63

anesthes

That sucks, it's behind the timing cover?

I've never touched an LT1, but from what I can recall from owning a C4; getting the balancer off in the car is a PITA because of the cross bar in the front.

Good luck.

-- Joe

AJT84

Yeah I found the picture of the assembly in the FSM. Will have to removing timing cover, chain, then I believe a bearing is pressed into the block. Can't find a part number...

kg4fku

I did some quick searching and can't find one at the moment. Sounds like the perfect excuse to upgrade to an electric water pump instead of tearing apart the front of the motor.

antfarmer2

Why would you remove the timing cover?

kg4fku

because he broke the shaft off of the water pump drive. That is the piece that the couple slide onto to connect and drive the water pump.

In order to replace the part that is broken you have to remove the timing cover.

kg4fku

GEAR CIRC PUMP DRIVE LT-1 GM# 10219554 (INDMAR P/N S551239) (#IND551239)

Everything I search either comes up discontinued or shows the coupler instead of the gear drive.

antfarmer2

Really my mind must be slipping. I thought it was just a little splined coupling like on the opti.

kg4fku

This is what it should look like. Compare this picture to the OP's picture.

kg4fku

This is what the OP needs to replace.

antfarmer2

Ok but I swear mine had a little spline about a inch long that could be replaced that looks like what he broke.

kg4fku

I promise you I am not making this up.

antfarmer2

I believe you my mind is not what it used to be. Could he just put a electric pump on? and replace the seal.


Sorry I just noticed you already came up with this.

anesthes

An electric water pump is not a great idea for a street car.

-- Joe

kg4fku

A few people on here would say different.

kg4fku

Sorry, didn't notice you had replied again.

anesthes

Oh I know. People do all sorts of silly things

-- Joe