'94 ZR-1 Engine/Car Rebuild - ZR-1 Net Registry Forums

albeR/To · 10-24-2019

Hello Everybody!

After like two years since I bought the car from Kris and less than 10 miles behind the wheel (the car was impounded after few kilometers away from the customs office and after 3 days in italy because of expired temporary license plates and it costed me a "small fortune" to get it back) I decided to begin a big overhaul of the car.

I started immediately by fixing some small issues around the car, but everytime I removed something I found something worse behind it...
At the end a couple of month ago I decided to remove the engine and start from everything from scratch.

In this thread I will share my experience/story of the rebuild of the car and I hope to find some help from you guys.

When I got stopped by the police...

When it arrived at home

At the workshop with one of its sisters

The engine just before the removal

Almost ready to be removed

The engine is on the ground!

Lets the nightmare begin

First surprise: camshaft lobe tips are ruined (seems like pitting)

On both banks

Crankshaft doesn't look bad

albeR/To · 10-24-2019

Now I'm already stuck...can you suggest me the way to remove the spacer on the crankshafts between the chains sprocket and the oil pump?

grahambehan · 10-24-2019

Quote:

Originally Posted by albeR/To

Now I'm already stuck...can you suggest me the way to remove the spacer on the crankshafts between the chains sprocket and the oil pump?

If you have the sprocket removed, the spacer is a slip fit and should be able to be rotated and pulled forward off the crank.
Graham

jss06c6 · 10-24-2019

Wish I could see your pictures, but unfortunately cannot. Keep at it, it's worth the effort.[emoji41]

Steve

Sent from my SM-G950U using ZR-1 Net Registry mobile app

albeR/To · 10-25-2019

Quote:

Originally Posted by grahambehan

If you have the sprocket removed, the spacer is a slip fit and should be able to be rotated and pulled forward off the crank.
Graham

I removed the sprocket, but the spacer doesn't seem it wants to move...the spline also seems stuck...on monday I will try again.

Quote:

Originally Posted by jss06c6

Wish I could see your pictures, but unfortunately cannot. Keep at it, it's worth the effort.[emoji41]

Steve

Sent from my SM-G950U using ZR-1 Net Registry mobile app

I will use a different pictures host (I used Microsoft onecloud, but it doesn't seem to work)

albeR/To · 10-28-2019

Main bearings completely gone

Pistons are ok, just a lot of dirt on them

G8nightman · 10-28-2019

You need to resize those pictures

XfireZ51 · 10-28-2019

Alberto,

Sono stato a Salo e Sirmione molti anni fa con famiglia. Bellissimo.

BigJohn · 10-28-2019

Molto cool Italiano

S.hafsmo · 10-28-2019

What caused you to remove the engine in the first place? I seem to have missed the background story. What could have wreaked havoc in the entire engine?

10-24-2019	#1
albeR/To Join Date: Jun 2017 Location: Italy Posts: 8	'94 ZR-1 Engine/Car Rebuild Hello Everybody! After like two years since I bought the car from Kris and less than 10 miles behind the wheel (the car was impounded after few kilometers away from the customs office and after 3 days in italy because of expired temporary license plates and it costed me a "small fortune" to get it back) I decided to begin a big overhaul of the car. I started immediately by fixing some small issues around the car, but everytime I removed something I found something worse behind it... At the end a couple of month ago I decided to remove the engine and start from everything from scratch. In this thread I will share my experience/story of the rebuild of the car and I hope to find some help from you guys. When I got stopped by the police... When it arrived at home At the workshop with one of its sisters The engine just before the removal Almost ready to be removed The engine is on the ground! Lets the nightmare begin First surprise: camshaft lobe tips are ruined (seems like pitting) On both banks Crankshaft doesn't look bad Last edited by albeR/To; 10-28-2019 at 10:34 AM.

10-24-2019	#2
albeR/To Join Date: Jun 2017 Location: Italy Posts: 8	Re: '94 ZR-1 Engine/Car Rebuild Now I'm already stuck...can you suggest me the way to remove the spacer on the crankshafts between the chains sprocket and the oil pump?

10-24-2019	#4
jss06c6 Join Date: Aug 2015 Location: Magnolia, Texas Posts: 884	Re: '94 ZR-1 Engine/Car Rebuild Wish I could see your pictures, but unfortunately cannot. Keep at it, it's worth the effort.[emoji41] Steve Sent from my SM-G950U using ZR-1 Net Registry mobile app

10-28-2019	#6
albeR/To Join Date: Jun 2017 Location: Italy Posts: 8	Re: '94 ZR-1 Engine/Car Rebuild Main bearings completely gone Pistons are ok, just a lot of dirt on them Last edited by albeR/To; 10-28-2019 at 10:36 AM.

10-28-2019	#7
G8nightman Join Date: Dec 2007 Location: NYC Posts: 1,191	Re: '94 ZR-1 Engine/Car Rebuild You need to resize those pictures __________________ 90 Chevy ZR1 LPE #2315 'SOLD' 90 Chevy ZR1 LPE #2774 'SOLD' 91 Chevy ZR1 Callaway aerobody 91 Chevy ZR1 #1512 91 Chevy ZR1 #951 95 Chevy ZR1 #338 'SOLD' 91 BMW 850i 94 BMW 850csi 95 BMW 850csi 94 Lotus Esprit S4 07 Benz CLS550 06 BMW M5 "SOLD"

10-28-2019	#8
XfireZ51 Join Date: May 2007 Location: Chicagoland, IL Posts: 9,686	Re: '94 ZR-1 Engine/Car Rebuild Alberto, Sono stato a Salo e Sirmione molti anni fa con famiglia. Bellissimo.

10-28-2019	#9
BigJohn Join Date: Feb 2012 Location: Ledyard,CT Posts: 8,335	Re: '94 ZR-1 Engine/Car Rebuild Molto cool Italiano

10-28-2019	#10
S.hafsmo Join Date: Nov 2016 Location: Norway Posts: 397	Re: '94 ZR-1 Engine/Car Rebuild What caused you to remove the engine in the first place? I seem to have missed the background story. What could have wreaked havoc in the entire engine? __________________ - '90 ZR-1