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-   -   RX-Snake: Engine Related (http://www.motorgen.com/forum/showthread.php?t=1054)

enkeivette 02-18-2009 07:22 PM

Quote:

Originally Posted by Vettezuki (Post 15641)
I know. My preference is to inexpensively fix the 174. However, I've put in more than 20 hours from the beginning of this project trying to find parts, etc., still am. It ain't looking too easy and probably depends on simple dumb luck.

The cheapest centrifugal kit I've seen, and it was questionable was on CL for like $800. Considering I'd have to still get headers, an intake and blower carb that's considerably more than say this kit, if it stays low, which eliminates the need for headers. Also, while some of ya's are skiddish about getting turbos to work, more than a few users have expressed an interest in a V8 Turbo. It also has more pull for the kids. It isn't a slam dunk decision. There are lots of competing factors and values.

Don't worry too much about getting a "blow through" carb. All you really need is a double pumper with black nitrophyl floats, and even the floats can be upgraded. A carb designed for a blower will always be better, but if it's a difference of a couple hundred dollars don't sweat it.

Have you thought about taking the blower to a machine shop, and having them spin you a new crank piece or whatever it was that broke off? If thems guys can weld on heads, I don't see why they couldn't weld and grind on a blower. Just need some heat and maybe a bearing pack right? Parts is parts.

Vettezuki 02-18-2009 07:25 PM

Quote:

Originally Posted by enkeivette (Post 15645)
Don't worry too much about getting a "blow through" carb. All you really need is a double pumper with black nitrophyl floats, and even the floats can be upgraded. A carb designed for a blower will always be better, but if it's a difference of a couple hundred dollars don't sweat it.

Have you thought about taking the blower to a machine shop, and having them spin you a new crank piece or whatever it was that broke off? If thems guys can weld on heads, I don't see why they couldn't weld and grind on a blower. Just need some heat and maybe a bearing pack right? Parts is parts.

I thought as soon as you push air through a carb you need a boost reference for the fuel pressure. :huh:

The bearing plate is dented and cracked in half. I asked my uncle's machine shop. Even at the family hourly rate, the time it would take to do all the measurements and build the code for the 4 axis machine is several days and poof $1,500. It would, however, be a reproducible part at that point.

enkeivette 02-18-2009 07:34 PM

P.S. Attention muscle gear heads: Do not fear the turbo!

I've done an aftermarket turbo install before, since we will be fabbing a new exhaust the only issue will be plumbing the oil lines, which can be done in a few hours easily. If this SBF is at all like a SBC we can tap the block off plate for the mech fuel pump for the return line (as I suspect we will be running an electric) and there are prob a bunch of places where we can steal the feed. Worst case we can T off the oil pressure sensor line.

Obviously it will be externally regulated so boost adjustment should be stupid easy. We might have to play around with vacuum lines to dial it in, but working with race gas we can always just lean to more boost :D

In terms of making it fit between the towers, it seems to me that we have some fine welders on hand, we have the Schorr metals scrap yard down the street, and I have a beautiful Craftsman mallet.

enkeivette 02-18-2009 07:35 PM

The fuel pump needs to be boost referenced from a line above the base plate (something that shows boost but not vacuum), not the carb.

This was covered in my CS install 101 thread! Where were you forum God?! :sm_laughing:

enkeivette 02-18-2009 08:03 PM

Have you checked to see if any other more common blower share the same plate? You'd think blower shops would know this, but I wouldn't be surprised.

Do you still have the link to the pic of the blower? You should make it a separate thread.

94cobra69ss396 02-18-2009 09:07 PM

Quote:

Originally Posted by enkeivette (Post 15648)
P.S. Attention muscle gear heads: Do not fear the turbo!

I've done an aftermarket turbo install before, since we will be fabbing a new exhaust the only issue will be plumbing the oil lines, which can be done in a few hours easily. If this SBF is at all like a SBC we can tap the block off plate for the mech fuel pump for the return line (as I suspect we will be running an electric) and there are prob a bunch of places where we can steal the feed. Worst case we can T off the oil pressure sensor line.

Obviously it will be externally regulated so boost adjustment should be stupid easy. We might have to play around with vacuum lines to dial it in, but working with race gas we can always just lean to more boost :D

In terms of making it fit between the towers, it seems to me that we have some fine welders on hand, we have the Schorr metals scrap yard down the street, and I have a beautiful Craftsman mallet.


We could duplicate the setup on my Cobra that I have for the Vortech. I have a T on oil pressure sending unit line that feeds the SC and then tapped the oil pan for the return. We could actually buy everything from Vortech to do it if the turbo kit doesn't come with it. The one Ben linked to already came with all the oil feed and return lines.

Vettezuki 02-18-2009 09:25 PM

Quote:

Originally Posted by enkeivette (Post 15656)
Have you checked to see if any other more common blower share the same plate? You'd think blower shops would know this, but I wouldn't be surprised.

Do you still have the link to the pic of the blower? You should make it a separate thread.

Yes, at least as much as I can. Several blower shops flat out said, no parts, no can fixy. Part of the problem is that it's for a Ford, which has the offset to clear the dizzie on the front. There are a lot more setups for SBC.

BRUTAL64 02-19-2009 10:10 AM

Quote:

Originally Posted by Vettezuki (Post 15641)
I know. My preference is to inexpensively fix the 174. However, I've put in more than 20 hours from the beginning of this project trying to find parts, etc., still am. It ain't looking too easy and probably depends on simple dumb luck.

The cheapest centrifugal kit I've seen, and it was questionable was on CL for like $800. Considering I'd have to still get headers, an intake and blower carb that's considerably more than say this kit, if it stays low, which eliminates the need for headers. Also, while some of ya's are skiddish about getting turbos to work, more than a few users have expressed an interest in a V8 Turbo. It also has more pull for the kids. It isn't a slam dunk decision. There are lots of competing factors and values.

Actually, what ever you decide to do is fine by me. :drink:

Vettezuki 02-19-2009 03:03 PM

If Turbo, what Intake
 
If we go Turbo or Centrifugal blower, would a Victor Jr. Single Plane intake still be the right choice or is there any reason to choose a different intake setup?

94cobra69ss396 02-19-2009 03:20 PM

Quote:

Originally Posted by Vettezuki (Post 15726)
If we go Turbo or Centrifugal blower, would a Victor Jr. Single Plane intake still be the right choice or is there any reason to choose a different intake setup?

I would say use the Victor Jr. You will be forcing a lot of air into the intake and the single plane will flow more than a dual plane.


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