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Pleh....

You know what I'm saying. Not 1972 "restored" but reminiscent of that era. Obviously I've made a few minor changes to GM's original design. :D


Welcome to Page 13.



:usaflag:
 
Since i'm sick and can't sleep I need more pics to stare at, come on Greg you know you have some new ones to post.
 
OK Sick Boy....here are a couple of preview shots for what's coming next:

Mickey Thompson BBC Aluminum valve covers... won on eBay a few days ago:

MTCovers.jpg


Old Offenhauser BBC Aluminum valve covers also from eBay

OffyCover.jpg



I wasn't sure which one I'd like better on the engine, so I bought them both! :D I'll clean them up either with a gentle bead blast and clearcoat, or maybe paint the high spots Chevy orange and leave the valleys in the natural aluminum?? Or maybe do some combination of bead blasting, paint and then highly polish the raised areas only?? :thinking:

When the arrive I'll put them on the engine and take photos of both....maybe put it up for a vote on CK5 and let people decide which one looks better.

As for the pulley dilemma: I don't really want to pull the waterpump apart to press the flange back further. There "might" be enough clearance but I'd hate to have a waterpump failure someday and realize that I can't use an off-the-shelf replacement anymore. I think the best solution will be to verify that the upper pulley is actually correct for this engine, and then build a spacer behind the crank pulley instead.

The crank pulley appears to be hub-centric, so I need to recreate that press-fit lip on the spacer (that goes into the hole of the balancer) and also cut a small shoulder into the other side of the spacer for the pulley to fit into. I can get the lip easily enough by cutting up the extra crank pulley I already have, then use that as a template for the through holes and get a thin spacer machined to match it. By sandwiching the chopped-up pulley, the spacer and the crank pulley together in that way, everything will be locked correctly at the hub area and won't rely on the bolt holes themselves to center the pulley or carry the loads.

So far this seems like the best option to me.


:usaflag:
 
hope ya got a deal on those MT's, I have the exact set hanging down in the garage I coulda hooked ya up with at a good price... and they get my vote.... blast, zinc, paint, mill the fins..... longboard works sweet for milling em...

I had a pretty good sidegig going with those back in the day..... buy em ratty for $10, $20, give em "the treatment" and sell em at the swapmeet for $100 to 150....
 
hope ya got a deal on those MT's, I have the exact set hanging down in the garage I coulda hooked ya up with at a good price...

Got any other BBC goodies hanging on hooks?

Now that I know to ask... :deal:


I'm working through some pulley confusion in the shop right now. Hopefully the waterpump I bought is the correct rotation for v-belt pulleys (it moves clockwise). There was some conflicting info in a CarCraft article I found online.

The waterpump double pulley now seems to be aligned perfectly. It might have just been an optical illusion / reflection last time (or slightly loose upper pulley) causing me to question things.

Now I'm trying to figure out how to load up the PS Pump. I've got an old long-style BBC hanger (Round pump style), and the short, block hugger one (teardrop style?). The pump I've got has a woodruff key and a small shaft (1/2"), but the pulleys I have are all keyless and 5/8" shafts. The round canister doesn't bolt up to the short style bracket either.

The stock alternator mount (passenger side) sits a lot higher than I like...so I flipped the bracket to create more of a mid-mount setup, but it's not really working the way I'd hoped. The current alternator is a 100A unit, but I'm leaning towards a CS144 version (larger case) so all this test fitting might not translate to the new alternator anyway.

The A/C compressor will still need room on that side underneath the alternator, but the good news is that with the triple crank pulley I should have enough "grooves" to drive everything.

Pics and more questions later this evening.....


EDIT: PICS...

Late model PS bracket and upside down alternator bracket experiment.

DSC03682.jpg


Old-style BBC power steering bracket.

DSC03683.jpg


Alternator bracket corrected, with round reservoir-style PS pump

DSC03691.jpg


PS Pump with double-pulley fitted...

DSC03693.jpg



:usaflag:
 
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The stock alternator mount (passenger side) sits a lot higher than I like...so I flipped the bracket to create more of a mid-mount setup, but it's not really working the way I'd hoped. The current alternator is a 100A unit, but I'm leaning towards a CS144 version (larger case) so all this test fitting might not translate to the new alternator anyway.
:usaflag:

Where you trying like do something like this?

From here.

midmount.jpg
 
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That would be good... As long as I could still fit the a/c compressor underneath it.

Is that an Alan Grove setup?


:usaflag:
 
2010.08.20 - QUICK UPDATE!

eBay victory arrives and starts getting "the treatment"...

Starting to clean the outside on the lower one in this photo...

DSC03701.jpg


The insides (dirty vs. cleaned)

DSC03700.jpg


After some masking, zinc chromate base and Chevy Orange paint...

DSC03709.jpg


Testing for looks....still needs to dry and a complete polish of the raised rib areas.

DSC03707.jpg



:usaflag:
 
They look great Greg....I do dig the Chevy orange!:waytogo:
 
OK Sick Boy....here are a couple of preview shots for what's coming next:

Mickey Thompson BBC Aluminum valve covers... won on eBay a few days ago:



Old Offenhauser BBC Aluminum valve covers also from eBay

OffyCover.jpg



I wasn't sure which one I'd like better on the engine, so I bought them both! :D I'll clean them up either with a gentle bead blast and clearcoat, or maybe paint the high spots Chevy orange and leave the valleys in the natural aluminum?? Or maybe do some combination of bead blasting, paint and then highly polish the raised areas only?? :thinking:

When the arrive I'll put them on the engine and take photos of both....maybe put it up for a vote on CK5 and let people decide which one looks better.

As for the pulley dilemma: I don't really want to pull the waterpump apart to press the flange back further. There "might" be enough clearance but I'd hate to have a waterpump failure someday and realize that I can't use an off-the-shelf replacement anymore. I think the best solution will be to verify that the upper pulley is actually correct for this engine, and then build a spacer behind the crank pulley instead.

The crank pulley appears to be hub-centric, so I need to recreate that press-fit lip on the spacer (that goes into the hole of the balancer) and also cut a small shoulder into the other side of the spacer for the pulley to fit into. I can get the lip easily enough by cutting up the extra crank pulley I already have, then use that as a template for the through holes and get a thin spacer machined to match it. By sandwiching the chopped-up pulley, the spacer and the crank pulley together in that way, everything will be locked correctly at the hub area and won't rely on the bolt holes themselves to center the pulley or carry the loads.

So far this seems like the best option to me.


:usaflag:

Those offenhausers are sweet

The m/t's look good too though and they probably go better with the orange
 
I'm painting the Offy's too....similar treatment to the M/Ts, just to see how they'll look.

I'll post pics both ways.


:usaflag:
 
Definately run the M/T's, the Offy's were a thing of the 60's and not really "date correct" for your application.
 
Jon got it right, 1965 was the first BBC ever (well besides the 348/409). At any rate, you're wanting an era correct looking engine so for a 72 M/T stuff was pretty commonly used whereas the Offy stuffy not so much anymore.
 
Yep. I see a lot more photos on the interwebs with the M/T covers... I don't know that I've EVER seen an engine photo with the Offenhauser ones. I guess that is what piqued my interest.

The M/Ts have a nice squared-off, burly appearance. The Offys have a nice symmetrical appearance with all the fillers and breathers centered perfectly on each side. I'll have to wait until they arrive to see if they have the same visual impact or not since they are a bit more rounded at the corners. Either way, I'll paint 'em up and polish the ribs and lettering to see how they look.

I bought a nice expensive set of re-useable valvecover gaskets so who knows.....maybe I'll just swap them over from time to time depending on my mood! :D

At the very least, the unused set can hang on the manspace wall as a decoration.



:usaflag:
 
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Greg, those Offy's are definitely more rare than the M/T's, but I too like the squared off look that the M/T's give. So if your looking to be completely different, the Offy's would bring the stare more than the M/T's would, but like Scott said, the M/T's would be more period correct. They were the ones to have in the early-mid 70's.
 

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