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01-12-2009, 01:35 AM
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#141
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I, Vettezuki
Join Date: Feb 2006
Posts: 14,754
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BTW, unless I'm a total crack head (possible) and incapable of using a tape measure, the engine will have to swtich from a front to rear sump setup. What parts can be kept (pan?) and what needs to change (pickup?)?
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01-12-2009, 07:03 AM
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#142
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Senior Member
Join Date: Jul 2008
Posts: 739
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Quote:
Originally Posted by Vettezuki
BTW, unless I'm a total crack head (possible) and incapable of using a tape measure, the engine will have to swtich from a front to rear sump setup. What parts can be kept (pan?) and what needs to change (pickup?)?
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That's it. The pan and the pick-up.
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HP numbers are good and all, but they are like asking someone how much they can bench. What difference does it make if I can still kick your ass?
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01-12-2009, 08:56 AM
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#143
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Neanderthal
Join Date: Mar 2008
Posts: 5,320
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Quote:
Originally Posted by Vettezuki
Glenn, did you say you had a carb that could be used, or know where we could get one that would be appropriate on the cheap? I'm assuming we could get a used one, and somebody here could rebuild it and set it up for our purpose.
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What I said was, I'm sure we could find a Holley somwhere we could use to get things going.  I do have a 500 CFM Carter laying around. That's half of what we need. 
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64 Vette Roadster 400 ci
1990 F150 351 ci SuperCharged
48 Harley Pan Head 76 ci
2016 Nissan Altma
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01-12-2009, 10:54 AM
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#144
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I, Vettezuki
Join Date: Feb 2006
Posts: 14,754
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Quote:
Originally Posted by BRUTAL64
What I said was, I'm sure we could find a Holley somwhere we could use to get things going. I do have a 500 CFM Carter laying around. That's half of what we need. |
I'll keep my eyes open on Craigslist/eBay for a 750 Holley with 4 corner idle set. My understanding is that since the carb goes on top of the blower, it's a "pull through" not a "blow throw" setup and there's effectively no advantage to a "blower carb". Am I thinking correctly?
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01-12-2009, 11:17 AM
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#145
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Senior Member
Join Date: Jul 2008
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Quote:
Originally Posted by Vettezuki
I'll keep my eyes open on Craigslist/eBay for a 750 Holley with 4 corner idle set. My understanding is that since the carb goes on top of the blower, it's a "pull through" not a "blow throw" setup and there's effectively no advantage to a "blower carb". Am I thinking correctly?
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Not exactly. The power valve will not operate correctly without referencing manifold vacuum/boost, causing the engine to run rich during normal operation. Both Holley and Demon has a carb for roots style blowers.
But let's not get too far ahead of ourselves. I need to make sure I can get this blower functional before we go purchasing a carb for it.
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HP numbers are good and all, but they are like asking someone how much they can bench. What difference does it make if I can still kick your ass?
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01-12-2009, 11:23 AM
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#146
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I, Vettezuki
Join Date: Feb 2006
Posts: 14,754
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Quote:
Originally Posted by joedls
Not exactly. The power valve will not operate correctly without referencing manifold vacuum/boost, causing the engine to run rich during normal operation. Both Holley and Demon has a carb for roots style blowers.
But let's not get too far ahead of ourselves. I need to make sure I can get this blower functional before we go purchasing a carb for it.
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Roger. I'll put the carb acquisition into a holding pattern until you give clearance. Can you post pics of the parts that are needed? I think you said shaft housing and end plate. I'll do some rooting around and see what I can find.
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01-12-2009, 11:53 AM
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#147
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Senior Member
Join Date: Jul 2008
Posts: 739
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Quote:
Originally Posted by Vettezuki
Roger. I'll put the carb acquisition into a holding pattern until you give clearance. Can you post pics of the parts that are needed? I think you said shaft housing and end plate. I'll do some rooting around and see what I can find.
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I'll take some pics tonight when I get home.
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HP numbers are good and all, but they are like asking someone how much they can bench. What difference does it make if I can still kick your ass?
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01-12-2009, 12:47 PM
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#148
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Neanderthal
Join Date: Mar 2008
Posts: 5,320
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Quote:
Originally Posted by joedls
Not exactly. The power valve will not operate correctly without referencing manifold vacuum/boost, causing the engine to run rich during normal operation. Both Holley and Demon has a carb for roots style blowers.
But let's not get too far ahead of ourselves. I need to make sure I can get this blower functional before we go purchasing a carb for it.
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Years ago, we were able to get Holleys to work with Roots Blower. This was long before there were "blower" carbs. It is still pull thru as with a NA motor. But I've heard that Blower Carbs are easier to tune for roots. Haven't used one.
The last Roots steet car I built 1990 had a BM and I used a 750 Double pumper and it ran great, no over richness when I tuned the carb. 
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64 Vette Roadster 400 ci
1990 F150 351 ci SuperCharged
48 Harley Pan Head 76 ci
2016 Nissan Altma
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01-12-2009, 02:42 PM
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#149
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Senior Member
Join Date: Jul 2008
Posts: 739
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Quote:
Originally Posted by BRUTAL64
Years ago, we were able to get Holleys to work with Roots Blower. This was long before there were "blower" carbs. It is still pull thru as with a NA motor. But I've heard that Blower Carbs are easier to tune for roots. Haven't used one.
The last Roots steet car I built 1990 had a BM and I used a 750 Double pumper and it ran great, no over richness when I tuned the carb. |
Yeah, we used to have distributors with points in them, too. Doesn't mean I still wanna do it.
BTW, Glen, you're an old man!!! 
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HP numbers are good and all, but they are like asking someone how much they can bench. What difference does it make if I can still kick your ass?
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01-12-2009, 03:20 PM
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#150
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Neanderthal
Join Date: Mar 2008
Posts: 5,320
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Quote:
Originally Posted by joedls
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You say that here, but can you say that to me in person????
Actually points are a VERY reliable way to go.
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64 Vette Roadster 400 ci
1990 F150 351 ci SuperCharged
48 Harley Pan Head 76 ci
2016 Nissan Altma
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