|
Originally Posted by Mariah212Z
(Post 3536679)
+1 Use a Marine Carb CG approved for a boat.
This should not even be debated?? Eddie |
850 carb
What king of price do you have on the carb?
Thanks eric
Originally Posted by brivander
(Post 3533739)
Interesting, I tried going from a vacuum secondary 850 to a mechanical secondary on my boat this year. If you are interested in an 850 I'll cut you a pretty good deal, I bought it brand new in July for $591 off Amazon with electric choke and had it on my boat for literally 3 days. We thought initially when I began having issues this year I was having fuel problems so I rebuilt the carburator, that didn't help but it was quite corroded inside so I bought a new one to try assuming I'd use it at some point anyhow. That turned out not to be the problem so I re-installed the stock carb.
Let me know if you'd be interested, otherwise it will be sitting on my shelf for some time, or maybe I'll throw it on ebay...I'm in no hurry to get rid of it but if someone else needs it, hey what the heck. Items Ordered Price 1 of: Holley 0-80443 850 CFM Marine Four Barrel Mechanical Secondary Automatic Electric Choke Carburetor Condition: New Sold by: Amazon.com LLC $591.41 Order Placed: July 23, 2011 Order Total: $591.41 Item(s) Subtotal: $591.41 Shipping & Handling: $0.00 ----- Total Before Tax: $591.41 Sales Tax: $0.00 ----- Total for This Shipment: $591.41 |
Are you 100% sure?
Originally Posted by Young Performance
(Post 3536728)
You can easily replace the straight vent tubes with J tubes. This is an easy way to make a non CG carb "complient" without having to buy a new carb, assuming you already have one. The tubes are just pressed in and are fairly easy to replace. Just a thought that I wanted to throw out.
Eddie Why take that risk??? I wouldn't!! I will research, but don't marine carbs have additional differences built into them? |
No I am not 100% sure. I just wanted to point out that the vent tubes can be replaced. I should have been more specific. The addition of J tubes will make that aspect of a carb complient, but I do not know if there are other differences in the 2 carbs. Maybe someone smarter than me knows the answer to the question of if there are any other differences between a CG approved and Non-CG approved carb besides the J tubes.
Eddie |
I thought marine carbs also had the butter fly shafts grooved so that any gas would be directed into the motor, vs past the base plate shaft bores and to the outside????
But then, I've never seen those grooved shafts myself. |
J tubes are not part of the Coast guard requirement. As I said earlier they were something Holley created. One of the CG tests is to crank your engine for 30seconds with the ignition off and the throttle at 50%. If less then 5cc (I think) leaks out of any external part of the carb it passes. So, I would guess that Holley put those tubes on back in the day when they had chitty needle and seats so that if the floats overflowed it would just dump in the carb and still pass the test. Like Eddie said (and was not recommending) you could throw those Jtubes in there and no one would notice the difference.
It's time for OSO to take it's skirt off.. If you're biggest concern is following your insurance adjusters instructions to the letter then IMO you're missing the point. Do you run your bilge blower for 2 minutes every time before starting too? |
Originally Posted by HaxbySpeed
(Post 3538095)
J tubes are not part of the Coast guard requirement. As I said earlier they were something Holley created. One of the CG tests is to crank your engine for 30seconds with the ignition off and the throttle at 50%. If less then 5cc (I think) leaks out of any external part of the carb it passes. So, I would guess that Holley put those tubes on back in the day when they had chitty needle and seats so that if the floats overflowed it would just dump in the carb and still pass the test. Like Eddie said (and was not recommending) you could throw those Jtubes in there and no one would notice the difference.
It's time for OSO to take it's skirt off.. If you're biggest concern is following your insurance adjusters instructions to the letter then IMO you're missing the point. Do you run your bilge blower for 2 minutes every time before starting too? You professionals should know this better than the average . boater. Bye the way, what is meant by the strange comment "It's time for OSO to take it's skirt off". You are missing the point. Yes I do run the bilge blower before starting my engine. |
|
Originally Posted by egbolt
(Post 3537034)
What king of price do you have on the carb?
Thanks eric |
Originally Posted by HaxbySpeed
(Post 3538095)
J tubes are not part of the Coast guard requirement. As I said earlier they were something Holley created. One of the CG tests is to crank your engine for 30seconds with the ignition off and the throttle at 50%. If less then 5cc (I think) leaks out of any external part of the carb it passes. So, I would guess that Holley put those tubes on back in the day when they had chitty needle and seats so that if the floats overflowed it would just dump in the carb and still pass the test. Like Eddie said (and was not recommending) you could throw those Jtubes in there and no one would notice the difference.
It's time for OSO to take it's skirt off.. If you're biggest concern is following your insurance adjusters instructions to the letter then IMO you're missing the point. Do you run your bilge blower for 2 minutes every time before starting too? |
| All times are GMT -5. The time now is 07:45 PM. |
Copyright © 2026 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.