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Discussion Starter #142
Spent most of a day restoring the Altissimo tag lights. Had to make the gaskets from scratch, that took a long time to make sure they fit. Used silicone foam rubber
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Very, very nice .... but if everything you bolt on the car has bolts that excessively long she will be one heavy car when finished :D Colin Chapman will be spinning in his grave

Please note I am a weight obsessed person, when it comes to cars
Pete
 

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Discussion Starter #145
Never had the spring thing ...if i put it on it takes extra effort to push the catch back. Catch works perfectly fine without it. I removed, cleaned and rewelded in place the heavy channel that is the stop for the catch on the backside of the radiator support just in case.
You guys that have it find it's ok?
 

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Discussion Starter #147
I'll start an Floor Project leads to 1600 Engine Rebuild thread, or should I continue here????
 
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I vote for continuing here :)

Pete
 

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Discussion Starter #149
Original 1964 Borgo pistons with ~200k miles worn only in one location, the top ring groove being 0.010" over. Shame. Ring gap was at limit of 40 thou. Original Alfa rings with about 120k on them did not significantly wear the cylinders, under the microscope the wear pattern looked good to me.
So waiting to hear back from vendors....want a street, stock 1600 67 spec Duetto engine. JE pistons available but for race apps.
 
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Discussion Starter #150
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Discussion Starter #151
Meantime I cleaned the block and crank, crank in spec so it'll just get new std bearings. Goetze bearings available here so I'll probably go with those. Is Clevite better ???
Studs a little crusty but I leave them alone. Made sure the cylinder seats are super clean as wall as the bores.
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Discussion Starter #152
Parts arrived 3 days after ordered from CLassic A, Federalmogul just about everthing, from piston/cyl assemblies to bearings.
Mixed heavy wrist pins with light pistons, plus a little material removal got the weights to within 0.24g of each other. I'll weigh the old assemblies just out of curiosity.
Did that to my Peugeot engine and it really smoothed out the engine past 4k rpm.
Piston/cyl set from Nüral have a 3.5mm oil groove rather than 4mm of the old Borgo OE
So I ordered Hastings rings from Summit. The top ring is moly coated in the set for 3.5mm oil ring groove. Chrome top ring sets are for 4mm oil ring groove. Don't know why.
 
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Discussion Starter #153
Pistons with in 4g of each other, matched their weights including the wrist pin so that max difference is now 0.24g
Disassembly of head shows perfect intake seats but the exhaust though pitted will clean up after some hand lapping, as test on #4 showed.
All the valve train parts are identified and in sealed baggies. Intake seals were rock hard but guides might be ok. Will measure today and do the dry vs oiled wiggle test on the valves. The head while it has many years (30?) since it was last off for valves, springs and guides it has maybe 30k miles on it. Rings and bearings have around 120k .
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Any closeups of the lower half of the head studs? I hate to carry bad news, but they look corroded, or at least discolored. I can't recall if we talked about that on the phone.
Andrew
 

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Discussion Starter #155
Here are pictures of the lower part of the studs. Yeah they have pits but thats the way it's been. I descaled , sanded, naval jelly, primed and painted to slow or stop further corrosion. I don't think the studs are as stressed in the 1600 as say a 911, which snap oe Dilivar studs often but they are smaller ( i think, iirc) ....ive had to do the job. Really don't want to take it to a machine shop.
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If you had an experienced Alfa engine builder locally I think it would be worthwhile to have him/her take a look at those. We just rebuilt a friend's 1750 and rejected the first block for this reason. Hard to tell in pics but they look pretty eaten.
Andrew
 

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Don't look 'wasted' to me. Look fine

Pete
 

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Discussion Starter #158
From the 1600 manual
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I say, not after 60 years under water!
But OTOH the 1600 is torqued to ~45 ft-lbs. Is that a lower value than the 2L?

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Had a couple of SpaceX engineers do some back of the envelope stress calculations ....looks like the 1600 was not highly stressed i.e. has margins . It'll be ok.
 

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Discussion Starter #159
One of the assumptions was a 10.9 stud. Combustion pressure was considered too.
So here we are priming.
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I just want to say that I am learning a lot from this threat, so thank you very much for sharing your experience.
Bill
 
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