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Discussion Starter #1
Ok, this is the last post for a solution to my problem before I take it to a mechanic.

Here's the gripe:

I took the engine from my 80 ZX coupe and put it into my 80 ZX 2+2.
The coupe was a 5 speed, the 2+2 is an automatic.
The coupe was a daily driver, the 2+2 had been sitting for 2 years with a possible blown head gasket.
I had no troubles romoving and replacing the enigine.
When the starter is engaged there is a metallic grinding noise as if the starter is not meshing properly with the drive plate, and when the starter is disengaged, there is a metallic slapping noise intermittenly for about 30 seconds and the goes away. The car always starts this way.
There is extreme vibration from 1000 r.p.m. and up, no matter what gear the tranny is in and no matter whether sitting still in park or neutral or rolling down the road.
The vibration is not a slight shimmy like a tire was out of balance, it is extreme as if the drive shaft were very unbalanced, but again it shakes even when sitting still.
Here's what I have replaced in the troubleshooting process:

Drive plate
Torque converter
Entire transmission
Starter

Here's what I have checked:

Engine mounts
Accesories
Harmonic balancer
Engine/Tranny alignment
Torque converter alignment
Timing
Engine firing

I have done all I know to do to this car, so I guess it's time to turn it over to the pros. It's just that the pro's charge so much. I really like being able to do all the maintenance myself, so that it's more enjoyable to drive, but I guess not this time.

If anyone has any last minute solutions or similiar experiences, please send them in.

Thanks in advance.

P.S. Thanks again to all who have contributed in the past.
 

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107,695 Posts
Discussion Starter #2
Well, if it occurs just sitting still, then it would not be the transmission so it has to be the engine. Check the A/T flex plate. Also, I didn't think the Z's had a harmonic balancer. I thought they were internally balanced, atleast with the 5-speeds. Did you try with the balancer off? I know there are different centering hubs for the flexplate(A/T) and the flywheel(MAN.), you had to use the A/T hub to make it center, right?

It's gotta be the engine. Think........ Did you use the balancer from the 2+2 or the coupe. Try the one from the 2+2 if not. Maybe it needs to follow the tranny to balance. gotta go I'll think some more and keep us up to date.

LuZifer.

> Ok, this is the last post for a solution to
> my problem before I take it to a mechanic.

> Here's the gripe:

> I took the engine from my 80 ZX coupe and
> put it into my 80 ZX 2+2.
> The coupe was a 5 speed, the 2+2 is an
> automatic.
> The coupe was a daily driver, the 2+2 had
> been sitting for 2 years with a possible
> blown head gasket.
> I had no troubles romoving and replacing the
> enigine.
> When the starter is engaged there is a
> metallic grinding noise as if the starter is
> not meshing properly with the drive plate,
> and when the starter is disengaged, there is
> a metallic slapping noise intermittenly for
> about 30 seconds and the goes away. The car
> always starts this way.
> There is extreme vibration from 1000 r.p.m.
> and up, no matter what gear the tranny is in
> and no matter whether sitting still in park
> or neutral or rolling down the road.
> The vibration is not a slight shimmy like a
> tire was out of balance, it is extreme as if
> the drive shaft were very unbalanced, but
> again it shakes even when sitting still.
> Here's what I have replaced in the
> troubleshooting process:

> Drive plate
> Torque converter
> Entire transmission
> Starter

> Here's what I have checked:

> Engine mounts
> Accesories
> Harmonic balancer
> Engine/Tranny alignment
> Torque converter alignment
> Timing
> Engine firing

> I have done all I know to do to this car, so
> I guess it's time to turn it over to the
> pros. It's just that the pro's charge so
> much. I really like being able to do all the
> maintenance myself, so that it's more
> enjoyable to drive, but I guess not this
> time.

> If anyone has any last minute solutions or
> similiar experiences, please send them in.

> Thanks in advance.

> P.S. Thanks again to all who have
> contributed in the past.
 
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