Duetto engine removal - Page 3 - Alfa Romeo Bulletin Board & Forums
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post #31 of 197 (permalink) Old 01-05-2019, 08:22 AM Thread Starter
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Originally Posted by spiderserie4 View Post
yes, that's a german "Typenschild" (or ID plate) put on every alfa sold in Germany.
So most likely your alfa would have been first delivered to Alfa Romeo Frankfurt.

It states: type, chassis number, permissable total weight, year of manufacture, front axle load limit and rear axle load limit (in that order)


Thanks for that information!
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post #32 of 197 (permalink) Old 01-06-2019, 05:23 PM Thread Starter
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i was thinking a complete engine gasket kit to remedy all these oil leaks. does anything stick out as abnormal for these engines? the whole bottom of the engine was a slimy mess but i don't see any one place that caused the problem.
thanks
Mark
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post #33 of 197 (permalink) Old 01-06-2019, 06:11 PM
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i was thinking a complete engine gasket kit to remedy all these oil leaks. does anything stick out as abnormal for these engines? the whole bottom of the engine was a slimy mess but i don't see any one place that caused the problem.
thanks
The airflow around the engine tends to distribute oil pretty thoroughly, so it's difficult to pinpoint the source of a leak. While you have the engine out, you could replace some gaskets, but you would be "shooting in the dark" to guess which ones were causing the leak(s).

There are six O rings that fit inside the head gasket to seal the oil passages that feed the cam bearings. Those O rings can fail, allowing oil to seep out the sides of the head gasket. Looking at your pictures, that area on the L side of your engine does look oily. But that could be oil from another source (cam cover gasket? "half moon" seals between cam cover and head?).

The front crankshaft seal is a likely source for oil leaks. The rear seal too. While gasketed joints don't tend to degrade with time, seals do wear out. If your front pulley has a groove where the seal rides, Chicago Rawhide (weird name, yes) sells sleeves to remedy that.

Jay Mackro
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'65 Guilia Sprint GT
'67 Duetto
'91 164L

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post #34 of 197 (permalink) Old 01-06-2019, 06:30 PM
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Ok got it! I pulled 'em along with the header. I loosened the left motor mount from the block as well so that I can take it off once the hoist is hooked up and the weight is off. I'll take the oil filter assembly off too. I should be able to pull it tonight after I finish fabricating a longer boom for the cherry picker I'm using.
How's the weather in San Juan Capistrano right now? Sunny and 72 I would guess. I love that place! We're moving back to So Cal when I'm done at Boeing in a few years.
Thanks for the help!
Mark
What Length Did You Make The Boom To Provide Adequate Clearance For Engine Removal?

-John
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post #35 of 197 (permalink) Old 01-06-2019, 06:46 PM
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If your front pulley has a groove where the seal rides, Chicago Rawhide (weird name, yes) sells sleeves to remedy that.
Chicago Rawhide now known as CR. Up through the 60's most engine seals where made from leather. They pretty much looked just like todays seals. The leather would wear a pretty deep groove in the pulley surface.

The reason for the name is Chicago was were most of the livestock was processed so that would be the largest supplier of leather.

1969 1750 Spider Veloce w/dual webers, 1969 1750 Berlina, 1971 1750 Spider Veloce w/ dual webers, 1985 Spider Veloce 23,000 orig. miles, {Two} 1986 Spider Veloces, 1987 Spider Veloce bought new, 1988 Quadrifoglio, 1991 164S, Plus several more. I think they are breeding.
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post #36 of 197 (permalink) Old 01-06-2019, 06:53 PM
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From the pictures you posted.

Rear of engine oil leaks are probably valve cover/ half moon seals. But also look at the 2 big aluminum plugs. These will leak oil through he threads if not tight enough. I take them out and clean the threads in the head and on the plug put sealer on both and reinstall.

Picture with the red arrow I would say is the distributor o ring. This is often the most over looked source of an oil leak. They get hard then start weeping oil from underneath the dist. clamp.

Post a few more pictures taken directly of the sides and front of the engine.

1969 1750 Spider Veloce w/dual webers, 1969 1750 Berlina, 1971 1750 Spider Veloce w/ dual webers, 1985 Spider Veloce 23,000 orig. miles, {Two} 1986 Spider Veloces, 1987 Spider Veloce bought new, 1988 Quadrifoglio, 1991 164S, Plus several more. I think they are breeding.
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post #37 of 197 (permalink) Old 01-06-2019, 08:44 PM Thread Starter
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Originally Posted by Delllta View Post
What Length Did You Make The Boom To Provide Adequate Clearance For Engine Removal?

-John
15 inches. I only needed 6 inches but I bought a piece of scrap 2x2x 3/16 Thick square tube that was already long enough to extend the boom 15 inches, so I just drilled it up for that. Worked great. The cherry picker was the Harbor freight folding model BTW.
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post #38 of 197 (permalink) Old 01-06-2019, 08:55 PM Thread Starter
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From the pictures you posted.

Rear of engine oil leaks are probably valve cover/ half moon seals. But also look at the 2 big aluminum plugs. These will leak oil through he threads if not tight enough. I take them out and clean the threads in the head and on the plug put sealer on both and reinstall.

Picture with the red arrow I would say is the distributor o ring. This is often the most over looked source of an oil leak. They get hard then start weeping oil from underneath the dist. clamp.

Post a few more pictures taken directly of the sides and front of the engine.
I''ll take some more pix tomorrow. I think you're correct about the distributor hold down and there are definitely several areas around the head/block joint where oil is seeping. What do you guys do with these heads typically when you pull them? Check for straightness? Pull the valves and check em? I was thinking of having my machine shop do all that plus check the cam bearing clearances. Maybe the valve seals too? I was thinking of buying the complete engine gasket kit from classic Alfa and just changing all of them for good measure. I'll of course change those "O" rings you referred to when replacing the head gasket.
Thanks for the replies!
Mark
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post #39 of 197 (permalink) Old 01-06-2019, 09:58 PM
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If your going to take the head off I would recommend going ahead and having a valve job done and the head surfaced. I wouldn't worry about cam journal clearance. There are no bearings for them. The cam runs on the head casting.

With the age of the gaskets on the engine. If your going to pull the head I would go ahead and reseal the engine. I would also only recommend using Victor Reinz brand. They are much better then the brand Classic Alfa sells. There more expensive but worth the price.

Engine Gasket Complete Set Reinz 1600 105 Series - Spruell Motorsport, Inc - Alfa Romeo Performance Your Store for Sports Car Performance and Racing Parts

http://www.spruellmotorsport.com/blo...15-p-4591.html

Also use this the Reinz sealant on the gaskets. One tube is more then enough to reseal the engine and trans. You will probably have enough to reseal the diff housing also.

https://www.amazon.com/VICTOR-REINZ-...43843587&psc=1

1969 1750 Spider Veloce w/dual webers, 1969 1750 Berlina, 1971 1750 Spider Veloce w/ dual webers, 1985 Spider Veloce 23,000 orig. miles, {Two} 1986 Spider Veloces, 1987 Spider Veloce bought new, 1988 Quadrifoglio, 1991 164S, Plus several more. I think they are breeding.
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post #40 of 197 (permalink) Old 01-07-2019, 08:34 AM Thread Starter
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If your going to take the head off I would recommend going ahead and having a valve job done and the head surfaced. I wouldn't worry about cam journal clearance. There are no bearings for them. The cam runs on the head casting.

With the age of the gaskets on the engine. If your going to pull the head I would go ahead and reseal the engine. I would also only recommend using Victor Reinz brand. They are much better then the brand Classic Alfa sells. There more expensive but worth the price.

Engine Gasket Complete Set Reinz 1600 105 Series - Spruell Motorsport, Inc - Alfa Romeo Performance Your Store for Sports Car Performance and Racing Parts

BLOCK Set of VITON Ultimate No Leak Engine O-Ring Seal Kit 750-115 - Spruell Motorsport, Inc - Alfa Your Store for Sports Car Performance and Racing Parts

Also use this the Reinz sealant on the gaskets. One tube is more then enough to reseal the engine and trans. You will probably have enough to reseal the diff housing also.

https://www.amazon.com/VICTOR-REINZ-...43843587&psc=1
Thanks for the gasket kit tip. Iíll make sure everything is included or order as necessary. While iím On the subject of ordering: I canít find a clutch alignment tool for this. Is that because the clutch plate bolts can be accessed through the bottom removable plate? Just wiggle the tranny into position and tighten the bolts after?
Thanks
Mark
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post #41 of 197 (permalink) Old 01-07-2019, 09:09 AM
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I canít find a clutch alignment tool for this. Is that because the clutch plate bolts can be accessed through the bottom removable plate? Just wiggle the tranny into position and tighten the bolts after?
The pressure plate to flywheel bolts are sort of accessible on a mechanical clutch car. But it would be easier to use an alignment tool. Centerline has them for $10; see: https://www.centerlinealfa.com/catal...alignment-tool

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Originally Posted by Jim G View Post
Chicago Rawhide now known as CR. Up through the 60's most engine seals where made from leather. The reason for the name is Chicago was were most of the livestock was processed so that would be the largest supplier of leather.
Interesting stuff! Thanks for that bit of history.

And all this time I just figured it was a company founded by a fan of a 70's mellow rock band and a 60's Clint Eastwood western series.

gprocket likes this.

Jay Mackro
San Juan Capistrano, CA

'65 Guilia Sprint GT
'67 Duetto
'91 164L

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post #42 of 197 (permalink) Old 01-07-2019, 09:25 AM Thread Starter
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Thanks Jay,
I thought I looked at centerline and didn’t see one. One of the vendors had them for every engine except the 1600.
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post #43 of 197 (permalink) Old 01-08-2019, 06:59 PM Thread Starter
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here are some more slimy pictures
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post #44 of 197 (permalink) Old 01-08-2019, 07:09 PM Thread Starter
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looks like those large plugs in the back of the head are in fact leaking. there are several sizeable leaks all around the head/block joint, distributor hold down and the tach drive. i'll order the gasket kit from Spruell and the front/rear main seals.
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post #45 of 197 (permalink) Old 01-08-2019, 07:25 PM
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It looks like you do have some leaks at the head gasket. You have 6 points that pass oil from the block to the head through the head gasket. The first picture in post 44 shows it leaking oil at one of the points for oil passage to the head.

1969 1750 Spider Veloce w/dual webers, 1969 1750 Berlina, 1971 1750 Spider Veloce w/ dual webers, 1985 Spider Veloce 23,000 orig. miles, {Two} 1986 Spider Veloces, 1987 Spider Veloce bought new, 1988 Quadrifoglio, 1991 164S, Plus several more. I think they are breeding.
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