Engine pulling time!

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Feb 6, 2014 | 02:37 PM

ishootstuff

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Engine pulling time!

I bought a rat nest in an 85 as I stated in my intro thread.

Finally got around to pulling the engine. I had to pull the heads in the car because there was still too much cactus and debris which prevented access to the transmission to engine bolts. It's just about ready to come out.

Looks like she has a broken crankshaft. I can move the front 6 pistons a little in their cylinders before the rear two move.

Feb 6, 2014 | 04:58 PM

MrWillys

Drifting

Joined: May 2013

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From: Reno Nevada

That's funny stuff. I'd be curious to see if the crank is bad. Don't hear about them failing too often. Keep us updated.

Feb 6, 2014 | 05:30 PM

BOOT77

Melting Slicks

Joined: Nov 2010

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From: Michigan

Read somewhere 85 was a steel crank? Prob a rod.

Feb 6, 2014 | 05:46 PM

ishootstuff

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Sure enough, broken crankshaft. This is only the second one I have ever seen. The first was in my 86 Cherokee which had the 2.8 Chevy 60 degree V6.

I think this engine has been rebuilt before - unless TRW pistons are stock.

Feb 6, 2014 | 06:20 PM

xrav22

Drifting

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From: Venice Cali.

TRW pistons were stock in 85

Feb 6, 2014 | 07:29 PM

MrWillys

Drifting

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From: Reno Nevada

What would cause this? Do you think 7 or 8 hydrolocked?

Feb 7, 2014 | 09:40 AM

ishootstuff

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Quote:

Originally Posted by xrav22

TRW pistons were stock in 85

Wow. Cool.

Quote:

Originally Posted by MrWillys

What would cause this? Do you think 7 or 8 hydrolocked?

I don't see any evidence of water ingestion or fuel injectors stuck on. I'd like to know the root cause, but I don't think I ever will.

Feb 7, 2014 | 04:02 PM

ishootstuff

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Feb 7, 2014 | 08:59 PM

ishootstuff

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Well... Looks like it's time for a crate engine. I don't like the wear on this main journal. The main cap is worse. Jegs has a 260 horse free shipping no tax longblock deal for $1530.

Anyone see any issues using THIS ENGINE?

Feb 7, 2014 | 10:23 PM

#10

cv67

Team Owner

Joined: Oct 2004

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From: altered state

St. Jude Donor '05

Thrust bearing all copper wow. What did the harmonic balancer look like? Guessing a GM crate would be somewhat reliable.

Feb 8, 2014 | 01:54 AM

#11

blackozvet

Safety Car

Joined: Nov 2009

Posts: 3,963

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From: Adelaide South Australia

Im thinking the rats probably chewed thru that crank !!

that engine is junk, easier and cheaper to buy a built motor !

Feb 8, 2014 | 02:25 AM

#12

illenema

Melting Slicks

Joined: Oct 2007

Posts: 2,310

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From: KB7TIF Ville NV

Dam. Sounds like fun

Feb 8, 2014 | 07:31 AM

#13

ishootstuff

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Quote:

Originally Posted by cuisinartvette

Thrust bearing all copper wow. What did the harmonic balancer look like? Guessing a GM crate would be somewhat reliable.

Balancer isn't separated, and was still on the crank plenty tight. No significant oil seal wear groove. Seems good.

Feb 8, 2014 | 09:33 AM

#14

WW7

Le Mans Master

Joined: Aug 2007

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From: WV

JB Weld??...

....WW

Feb 8, 2014 | 09:59 AM

#15

ishootstuff

Thread Starter

Intermediate

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Quote:

Originally Posted by WW7

JB Weld??...

....WW

That's what I did to my old 2.8 V6 Jeep when I was broke. It worked for as long as I needed it to work.

Feb 8, 2014 | 10:44 AM

#16

Rob31

Burning Brakes

Joined: May 2010

Posts: 900

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From: Cary illinois

Ive never seen a stock piston like that .

Feb 8, 2014 | 12:07 PM

#17

MrWillys

Drifting

Joined: May 2013

Posts: 1,736

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From: Reno Nevada

If all you can afford is the base GM Target engine it will operate well. The ZZ4 would be my choice that will work with stock programming. Can be tuned (I hate this word) but will work.

Feb 8, 2014 | 01:31 PM

#18

mtwoolford

Melting Slicks

Joined: Jan 2009

Posts: 3,482

Likes: 195

From: folsom california

Quote:

Originally Posted by ishootstuff

Well... Looks like it's time for a crate engine.

Anyone see any issues using THIS ENGINE?

Well for beginners, it has a flat tappet cam; and with the removal of zinc and phosphorous from engine oils for emissions reasons, lobe failure is always a concern. There are aftermarket lifters that are designed to provide extra oil to the lifter / cam interface...so that might be an option.

But...why not a 86 or later block with a factory hydraulic roller cam? sure it has a one piece rear seal style crank shaft that will require a newer style flexplate or flywheel, but it also has a better rear seal and better one piece pan gasket.

Feb 8, 2014 | 05:02 PM

#19

ghoastrider1

Le Mans Master

Joined: May 2006

Posts: 7,708

Likes: 266

From: indy indiana

Quote:

Originally Posted by mtwoolford

I believe rollers/one piece rear seal,started in 87, not 86. Alum, heads started mid 86.

Feb 8, 2014 | 05:19 PM

#20

WW7

Le Mans Master

Joined: Aug 2007

Posts: 8,735

Likes: 411

From: WV

Check out the motors and prices here.......WW

http://paceperformance.com/

How about this motor? 355 cube motor with roller cam, 1 piece rear main , 4 bolt block, internally balanced , plus free shipping, ........................... 30 month / 50,000 mile parts & labor warranty................

.....WW

http://paceperformance.com/i-8396343...rear-seal.html
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Last edited by WW7; Feb 8, 2014 at 05:48 PM.

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