You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an alternative browser.
You should upgrade or use an alternative browser.
carb purchase
- Thread starter buckeye
- Start date
Try here, they claim they're all new:
http://www.michiganmotorz.com/carburetors-renew-kits-carburetors-c-32_40_166.html
Or here:
https://www.carburetor-parts.com/Rochester-Quadrajet-Marine-Carburetor_p_3064.html
http://www.michiganmotorz.com/carburetors-renew-kits-carburetors-c-32_40_166.html
Or here:
https://www.carburetor-parts.com/Rochester-Quadrajet-Marine-Carburetor_p_3064.html
I had a bad experience with National Carb. They will stand behind them for sure, but sending them back and forth between Florida and NY wasted a lot of time. Watch their exchanges too. If you send them a real marine quadrajet, you don't want them to exchange it for a retrofitted automobile carb.
I eventually wound up getting one of my carbs done by a local rebuilder who did an excellent job, and then I re-powered both motors anyway. But I did hold on to the rebuilt marine QJet.
I eventually wound up getting one of my carbs done by a local rebuilder who did an excellent job, and then I re-powered both motors anyway. But I did hold on to the rebuilt marine QJet.
quote:
Originally posted by JVM225
I had a bad experience with National Carb. They will stand behind them for sure, but sending them back and forth between Florida and NY wasted a lot of time. Watch their exchanges too. If you send them a real marine quadrajet, you don't want them to exchange it for a retrofitted automobile carb.
I eventually wound up getting one of my carbs done by a local rebuilder who did an excellent job, and then I re-powered both motors anyway. But I did hold on to the rebuilt marine QJet.
who the local guy?
Curious what carb was purchased and where.
I guess it didn't take long to figure out that the Q-jet is the most expensive carb and The Edelbrock is the cheapest and holley is inbetween. Any of the 4 barrel carbs will work on a 5.0l.
I guess it didn't take long to figure out that the Q-jet is the most expensive carb and The Edelbrock is the cheapest and holley is inbetween. Any of the 4 barrel carbs will work on a 5.0l.
quote:
Originally posted by jtybt15
Curious what carb was purchased and where.
I guess it didn't take long to figure out that the Q-jet is the most expensive carb and The Edelbrock is the cheapest and holley is inbetween. Any of the 4 barrel carbs will work on a 5.0l.
Isn't the Edelbrock basically an updated version of the Carter AFB? If so, these were great carbs!
Yeah, I don't know the exact genesis of the Carter AFB (Aluminum Four Barrel) but I think Weber bought the patent and that's how Edelbrock got it's name in there somehow, though you can still buy the Carter AFB. Not sure if there is any difference between MFG's but I think the Carter is the cheapest.
You'd be amazed how much lighter an aluminum carb is compared to Zinc
You'd be amazed how much lighter an aluminum carb is compared to Zinc
tugboat kevin
Active member
- Joined
- Jan 25, 2007
- RO Number
- 24998
- Messages
- 1,245
we have been replacing qjets with the edelbrock 1409 600cfm it has a much better idle circuit and just runs better overall you do need to use a adapter to go from spread bore to square bore its hard to beat the price of the large high performance online warehouses on a vortec never use a reman head either you can buy brand new complete heads ready to run for 310 each
- Joined
- Aug 1, 2002
- RO Number
- 9587
- Messages
- 1,036
quote:
Originally posted by tugboat kevin
we have been replacing qjets with the edelbrock 1409 600cfm it has a much better idle circuit and just runs better overall you do need to use a adapter to go from spread bore to square bore its hard to beat the price of the large high performance online warehouses on a vortec never use a reman head either you can buy brand new complete heads ready to run for 310 each
+ 1- Replaced both my quads for the 1409s and never looked back...should have done it years ago.
I think most intake manifolds are dual pattern these days, in that they accept both square bore and spread bore. Square bore has all 4 barrels the same size and spread bore have like 1" primary bore and 2" secondary bore.
Personally, I love the spread bore. The small primary bores run very efficiently and are stingy on gas if set up right. I got the Holley 4175 Q-jet replacement. It's Holleys version of the spread bore. It can be set up so the vacuum secondaries won't open until that last 1/4" at full throttle, when you need it. Otherwise you run on those tiny 1" primary bores. So you understand why the small primaries work so much better, it's a matter of the speed of the air trying to rush thru the small bores which creates low pressure. The faster the air flow, the better the fuel is sucked from the float bowl. The faster air flow also atomizes the fuel better. I found my 4175 on sale at a marine warehouse for $275. Turned out to be used but in completely new condition.
Virtually all newer manufactured carbs can be considered 'marine' carbs, mainly because the EPA regulations required carbs that would leak fuel to the air. This mainly meant preventing leakage at the throttle shaft, which is a marine carb. Of course, the EPA are a bunch of liberals that have no idea how things work, they just make rules thinking that would fix everything. Fact is, carbs HAVE to vent the float bowl to air to keep the air pressure equalized. If the float bowl were sealed, fuel being pulled into the carb would create a vacuum in the float bowl so fuel wouldn't draw into the carb at an even rate.
Personally, I love the spread bore. The small primary bores run very efficiently and are stingy on gas if set up right. I got the Holley 4175 Q-jet replacement. It's Holleys version of the spread bore. It can be set up so the vacuum secondaries won't open until that last 1/4" at full throttle, when you need it. Otherwise you run on those tiny 1" primary bores. So you understand why the small primaries work so much better, it's a matter of the speed of the air trying to rush thru the small bores which creates low pressure. The faster the air flow, the better the fuel is sucked from the float bowl. The faster air flow also atomizes the fuel better. I found my 4175 on sale at a marine warehouse for $275. Turned out to be used but in completely new condition.
Virtually all newer manufactured carbs can be considered 'marine' carbs, mainly because the EPA regulations required carbs that would leak fuel to the air. This mainly meant preventing leakage at the throttle shaft, which is a marine carb. Of course, the EPA are a bunch of liberals that have no idea how things work, they just make rules thinking that would fix everything. Fact is, carbs HAVE to vent the float bowl to air to keep the air pressure equalized. If the float bowl were sealed, fuel being pulled into the carb would create a vacuum in the float bowl so fuel wouldn't draw into the carb at an even rate.
tugboat kevin
Active member
- Joined
- Jan 25, 2007
- RO Number
- 24998
- Messages
- 1,245
charlie the marine carbs have a coast guard approved number if you put a non marine approved part on insurance will not pay if theres an issue as the boat is not in compliance fuel line, and water hose to the thru hull fittings must have a coast guard number theres a few others too in todays world its not worth installing the wrong parts