My port motor has been running like crap. I changed the plugs, and they all had carbon fouling. I checked the timing which was to specs. Its still running way too rich, and assume I need to rebuild the quadrajet.
I was thinking about replacing it with the 1409. Anyone know if this is a direct replacement? Do I need to have an adapter plate?
1409 Carb
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todd brinkerhoff
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1409 Carb
1991 Trojan International 10.8 Meter Express hull# 003 - 454 Crusaders
1961 Century Raven 22 - Gray Marine 327
http://s1086.photobucket.com/home/Todd_ ... hoff/index
1961 Century Raven 22 - Gray Marine 327
http://s1086.photobucket.com/home/Todd_ ... hoff/index
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RWS
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Re: 1409 Carb
My Quadrajets had other issues - - their motors were worn out
so I replaced them with diesels
But seriously, didn't Natchamp do this changeover ?
RWS
so I replaced them with diesels
But seriously, didn't Natchamp do this changeover ?
RWS
1983 10 Meter SOLD after 21 years of adventures
Yanmar diesels
Solid Glass Hull
Woodless Stringers
Full Hull Liner
Survived Andrew Cat 5,Eye of Charley Cat 4, & Irma Cat 2
Trojan International Website: http://trojanboat.com/
WEBSITE & SITELOCK TOTALLY SELF FUNDED
Yanmar diesels
Solid Glass Hull
Woodless Stringers
Full Hull Liner
Survived Andrew Cat 5,Eye of Charley Cat 4, & Irma Cat 2
Trojan International Website: http://trojanboat.com/
WEBSITE & SITELOCK TOTALLY SELF FUNDED
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todd brinkerhoff
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- Joined: Sun Aug 15, 2010 11:56 am
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Re: 1409 Carb
I heard that the 1409's will give you the same economy as the diesel....just rumor of course.
1991 Trojan International 10.8 Meter Express hull# 003 - 454 Crusaders
1961 Century Raven 22 - Gray Marine 327
http://s1086.photobucket.com/home/Todd_ ... hoff/index
1961 Century Raven 22 - Gray Marine 327
http://s1086.photobucket.com/home/Todd_ ... hoff/index
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RWS
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Re: 1409 Carb
Actually the Quadrajet is not bad at all, if you can stay on the fwd two barrels
With the upgrade to my trim tabs, addition of larger flame arrestors, prop scan and timing advance repair my '83 express went from .7nmpg to .85mnpg.
in my case 2800 RPM was the sweet spot.
no headwind or current
verified through digital tach/sync and gps
prior to the turbodiesel refit
RWS
With the upgrade to my trim tabs, addition of larger flame arrestors, prop scan and timing advance repair my '83 express went from .7nmpg to .85mnpg.
in my case 2800 RPM was the sweet spot.
no headwind or current
verified through digital tach/sync and gps
prior to the turbodiesel refit
RWS
Last edited by RWS on Mon Aug 26, 2013 8:36 am, edited 1 time in total.
1983 10 Meter SOLD after 21 years of adventures
Yanmar diesels
Solid Glass Hull
Woodless Stringers
Full Hull Liner
Survived Andrew Cat 5,Eye of Charley Cat 4, & Irma Cat 2
Trojan International Website: http://trojanboat.com/
WEBSITE & SITELOCK TOTALLY SELF FUNDED
Yanmar diesels
Solid Glass Hull
Woodless Stringers
Full Hull Liner
Survived Andrew Cat 5,Eye of Charley Cat 4, & Irma Cat 2
Trojan International Website: http://trojanboat.com/
WEBSITE & SITELOCK TOTALLY SELF FUNDED
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Stripermann2
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Re: 1409 Carb
I did the swap last summer. Yes, a direct swap and the carbs run so much better than the old Quads.
Jamie
1985 F-32 270 Crusaders
1988 Sea Ray 23 350 Merc.
Trojan. Enjoy the ride...
-I don't wanna hear anyone whine...Anymore!
-You might get there before me, but you still have to wait for me, for the fun to start!
1985 F-32 270 Crusaders
1988 Sea Ray 23 350 Merc.
Trojan. Enjoy the ride...
-I don't wanna hear anyone whine...Anymore!
-You might get there before me, but you still have to wait for me, for the fun to start!
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todd brinkerhoff
- Moderate User
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- Joined: Sun Aug 15, 2010 11:56 am
- Location: Finger Lakes, NY
Re: 1409 Carb
Was that on a 7.4L?. I read where there is a need of an adapter plate and some possible modifications. I'm trying to determine if I should have the quad rebuilt or go with the 1409, and ease of installation is of course important.Stripermann2 wrote:I did the swap last summer. Yes, a direct swap and the carbs run so much better than the old Quads.
1991 Trojan International 10.8 Meter Express hull# 003 - 454 Crusaders
1961 Century Raven 22 - Gray Marine 327
http://s1086.photobucket.com/home/Todd_ ... hoff/index
1961 Century Raven 22 - Gray Marine 327
http://s1086.photobucket.com/home/Todd_ ... hoff/index
Re: 1409 Carb
I much prefer the QJet (I have 3 in use).
When properly rebuilt, the QJet will get better fuel economy,PLUS more power when the secondaries are opened.
They are not "hard" to rebuild - just a lot moire adjustments. Many don't know how to do it properly, and many rebuilders don't care to take the time. You can't simply buy a QJet off the shelf and use it without setting it up to your application.
Square-Bore carbs like the 1409, with no vacuum advance or anything, can be used off the shelf, but are a compromise in my opinion.
When properly rebuilt, the QJet will get better fuel economy,PLUS more power when the secondaries are opened.
They are not "hard" to rebuild - just a lot moire adjustments. Many don't know how to do it properly, and many rebuilders don't care to take the time. You can't simply buy a QJet off the shelf and use it without setting it up to your application.
Square-Bore carbs like the 1409, with no vacuum advance or anything, can be used off the shelf, but are a compromise in my opinion.
Captain Ross, 2009 Trojan Boater of the Year
"Viva Mahia" F32 Cummins 6BTA diesels,
"Mack Attack" Chaparral 244 Fish, SeaPro 180, McKee 14, Montauk-17
"Viva Mahia" F32 Cummins 6BTA diesels,
"Mack Attack" Chaparral 244 Fish, SeaPro 180, McKee 14, Montauk-17
Re: 1409 Carb
I much prefer the QJet (I have 3 in use).
When properly rebuilt, the QJet will get better fuel economy, PLUS more power when the secondaries are opened.
They are not "hard" to rebuild - just a lot more adjustments. Many don't know how to do it properly, and many rebuilders don't care to take the time. You can't simply buy a QJet off the shelf and use it without setting it up to your application.
Square-Bore carbs like the 1409, with no vacuum advance or anything, can be used off the shelf, but are a compromise in my opinion.
When properly rebuilt, the QJet will get better fuel economy, PLUS more power when the secondaries are opened.
They are not "hard" to rebuild - just a lot more adjustments. Many don't know how to do it properly, and many rebuilders don't care to take the time. You can't simply buy a QJet off the shelf and use it without setting it up to your application.
Square-Bore carbs like the 1409, with no vacuum advance or anything, can be used off the shelf, but are a compromise in my opinion.
Captain Ross, 2009 Trojan Boater of the Year
"Viva Mahia" F32 Cummins 6BTA diesels,
"Mack Attack" Chaparral 244 Fish, SeaPro 180, McKee 14, Montauk-17
"Viva Mahia" F32 Cummins 6BTA diesels,
"Mack Attack" Chaparral 244 Fish, SeaPro 180, McKee 14, Montauk-17
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Crazy Yankee
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Re: 1409 Carb
I just had East Fork Pro Marine in Hilton, NY rebuild my QJets. They did a great job!
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todd brinkerhoff
- Moderate User
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- Joined: Sun Aug 15, 2010 11:56 am
- Location: Finger Lakes, NY
Re: 1409 Carb
How much, if you don't mind me asking?Crazy Yankee wrote:I just had East Fork Pro Marine in Hilton, NY rebuild my QJets. They did a great job!
1991 Trojan International 10.8 Meter Express hull# 003 - 454 Crusaders
1961 Century Raven 22 - Gray Marine 327
http://s1086.photobucket.com/home/Todd_ ... hoff/index
1961 Century Raven 22 - Gray Marine 327
http://s1086.photobucket.com/home/Todd_ ... hoff/index
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Crazy Yankee
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Re: 1409 Carb
IDK exactly, but it was like 400/500 bucks. Complete rebuild. Soaked in parts cleaner to clean up the gunk, and re-painted.todd brinkerhoff wrote:How much, if you don't mind me asking?Crazy Yankee wrote:I just had East Fork Pro Marine in Hilton, NY rebuild my QJets. They did a great job!