Help me set up my new edelbrock 1409

[Rugglesworth]

Spread bore or square bore google it you will see the diff. If speak ore you may need an adapter to line up with your square bore carb

this was my answer back yesterday but it didn't go through for some reason, "Ok I took a look it's a spread bore intake and that small spacer is the adapter to square bore. "

So I think i'll try it with my the conversion spacer and see how she runs. The wedge is a discontinued item but I may still be able to get it online somewhere. Crazy $350 usd for a wedge. Anyways I figure I'll bolt her together and fire it up. Who knows the previous owner did with timing etc. I'm sure I'll need some timing/tuning advice as well.

One thing I did notice is the throw on the throttle wasn't equal when attached to the AVS2 carb. Like it went farther back in reverse than it did forward. Doesn't seem normal to me but I've only owned I/O's and OB's so I am not sure.

 

[Bondo]

One thing I did notice is the throw on the throttle wasn't equal when attached to the AVS2 carb. Like it went farther back in reverse than it did forward. Doesn't seem normal to me but I've only owned I/O's and OB's so I am not sure.

Ayuh,..... If it goes to Wot in forward, Good,.....
I've never ever wanted to go Wot in reverse,.....
Never more than a blip, to clear weeds from the prop,....

 

[Rugglesworth]

Ayuh,..... If it goes to Wot in forward, Good,.....
I've never ever wanted to go Wot in reverse,.....
Never more than a blip, to clear weeds from the prop,....

Yes that will be the test when I get her in the water under load and no I don't want to go to wot in reverse unless I want a submarine. Without the wedge I'm more concerned with how it will perform out of the hole with a wakeboarder or skier on the back

 

[Rugglesworth]

ok so I have the new 1409 carb bolted on. The way the avs2 carb was set up in neutral, the throttle cable doesn't match up so I adjusted the cable end to match the new carb. Is this the proper procedure? Just asking before I fire her up on the fake a lake

 

[Bondo]

ok so I have the new 1409 carb bolted on. The way the avs2 carb was set up in neutral, the throttle cable doesn't match up so I adjusted the cable end to match the new carb. Is this the proper procedure? Just asking before I fire her up on the fake a lake

Ayuh,........ In neutral, or at idle in gear, the throttle cable should move the carb's linkage, against the idle adjustment screw, firmly,.....

 

[Rugglesworth]

Ayuh,........ In neutral, or at idle in gear, the throttle cable should move the carb's linkage, against the idle adjustment screw, firmly,.....

Ok it seems to be that way right now

 

[Rugglesworth]

Ayuh,........ In neutral, or at idle in gear, the throttle cable should move the carb's linkage, against the idle adjustment screw, firmly,.....

ok so I fired her up after the carb install and she lit up nicely. When I back off the throttle she idles at 600 rpms which seems a little low. Runs a little lumpy but stays running. What are the next steps? just adjust the idle up to 650 or so? I want it as dialed in as I can before it gets put in the water for testing.
Thanks for all your help so far!

 

[nola mike]

ok so I fired her up after the carb install and she lit up nicely. When I back off the throttle she idles at 600 rpms which seems a little low. Runs a little lumpy but stays running. What are the next steps? just adjust the idle up to 650 or so? I want it as dialed in as I can before it gets put in the water for testing.
Thanks for all your help so far!

Did you set the timing? Adjust the mixture?

 

[Scott06]

ok so I fired her up after the carb install and she lit up nicely. When I back off the throttle she idles at 600 rpms which seems a little low. Runs a little lumpy but stays running. What are the next steps? just adjust the idle up to 650 or so? I want it as dialed in as I can before it gets put in the water for testing.
Thanks for all your help so far!

check or set igntion timing , tweak the idle mix screws , adjust the idle speed until maybe 675-700 out of water do final idle speed setting in water in fwd 650 or so.
if it is a little lumpy the mix screws may need fattening up or leaning out

 

[Rugglesworth]

check or set igntion timing , tweak the idle mix screws , adjust the idle speed until maybe 675-700 out of water do final idle speed setting in water in fwd 650 or so.
if it is a little lumpy the mix screws may need fattening up or leaning out

Ok can you talk me through the timing procedure on this motor? I just fired it up as is to make sure everything is good to go. She sounds good. One other question.... When I shut off the motor a stream of water kept coming out of the exhaust. Is that just the water pressure spinning the impeller letting water through or is something else going on. I've only ever owned i/o or ob so this is all new to me.

 

[nola mike]

What ignition?
You'll get some water after shutoff when the exhaust drains, not for long though

 

[Scott06]

Ok can you talk me through the timing procedure on this motor? I just fired it up as is to make sure everything is good to go. She sounds good. One other question.... When I shut off the motor a stream of water kept coming out of the exhaust. Is that just the water pressure spinning the impeller letting water through or is something else going on. I've only ever owned i/o or ob so this is all new to me.

I think from your earlier thread you have a TBV verify with first pic igntion module and probably knock module piggybacked to dist

pages may be out of order but one of them has timing tune up instructions .

get a factory manual

as Mike said water will continue to come out (Especially if hose is left on) all cooling water exits with exhaust to cool it so ther is residual for a while. Ther is entomb water in engine and exhaust that it takes 3-4 min to start coming out when you start up in the spring…

 

[Rugglesworth]

I think from your earlier thread you have a TBV verify with first pic igntion module and probably knock module piggybacked to dist

pages may be out of order but one of them has timing tune up instructions .

get a factory manual

as Mike said water will continue to come out (Especially if hose is left on) all cooling water exits with exhaust to cool it so ther is residual for a while. Ther is entomb water in engine and exhaust that it takes 3-4 min to start coming out when you start up in the spring…

Awesome thanks for the info I will read up. I'll look online for a factory manual pdf. I do have that ignition and knock module

 

[bajaman123]

You never said but...how did the boat run? You mentioned that the 800 cfm carb was "too big"; this implies performance issues of some sort? But yeah, ditch those spacers. Go run the boat with the carb "as is", do a nice, long WOT run and then shut it down, let it cool down some and pull a plug and see what it looks like. Odds are that it will be fine and no further tuning needed.
MANY years ago I put this carb and an Edelbrock PERFORMER series manifold on a Mercruiser 305 V8 that came stock with a 2 bbl carb; I ended up going up one jet size on the primaries, left the secondaries alone. That engine ran like a raped-ape with that set up.

 

[Rugglesworth]

You never said but...how did the boat run? You mentioned that the 800 cfm carb was "too big"; this implies performance issues of some sort? But yeah, ditch those spacers. Go run the boat with the carb "as is", do a nice, long WOT run and then shut it down, let it cool down some and pull a plug and see what it looks like. Odds are that it will be fine and no further tuning needed.
MANY years ago I put this carb and an Edelbrock PERFORMER series manifold on a Mercruiser 305 V8 that came stock with a 2 bbl carb; I ended up going up one jet size on the primaries, left the secondaries alone. That engine ran like a raped-ape with that set up.

It wouldn't run under 1000 rpm at idle, reaked like unburnt fuel, the guy jerry rigged the throttle connection so it was messed up. I'm thinking they probably messed with timing as well to get this combo of carb and spacers to run. Who knows what else they did so I'll check the timing first and go from there. Definitely the motor doesn't need an 800 cfm carb. Already runs 100% better just bolting on the new one

 

[Scott06]

It wouldn't run under 1000 rpm at idle, reaked like unburnt fuel, the guy jerry rigged the throttle connection so it was messed up. I'm thinking they probably messed with timing as well to get this combo of carb and spacers to run. Who knows what else they did so I'll check the timing first and go from there. Definitely the motor doesn't need an 800 cfm carb. Already runs 100% better just bolting on the new one

Also was not a marine rated carb …. From a safety perspective is a big issue

 

[Rugglesworth]

yeah 100

Also was not a marine rated carb …. From a safety perspective is a big issue

Yes 100%. The yellow fail safe fuel line was just laying on the intake.... Carb was corroded, linkage was all gummed up and jerry rigged etc.

 

[Scott06]

yeah 100

Yes 100%. The yellow fail safe fuel line was just laying on the intake.... Carb was corroded, linkage was all gummed up and jerry rigged etc.

The over flow fuel line on the intake helps the fire start faster, so you don’t waste time just getting a whiff of smoke…

the marine edlebrocks have a gold irrodite or similar finish vs the bare aluminum that the street carbs have. The bare aluminum corrodes in a car sitting in a garage …

the gold finish will get removed by gumout and other typical carb cleaners. Doesn’t take much as I found out. I think you are supposed to use simple green or other gentler cleaner. I used carb cleaner on mine some of finish came off so I clear coated it

 

[Rugglesworth]

Ok so I grounded the purple wire to set base timing, hooked up the timing gun to cylinder 1, got her up to tell and then checked the timing. As I suspected the po was messing with the timing as well. It's way past the 12degree timing marks. Shes running rough at 600 rpm idle. I think base is 6 to 8? So I'm going to fire her up again and try to see if it what happens when I move it to 8. Does thus all sound right?

 

[Rugglesworth]

Ok so I grounded the purple wire to set base timing, hooked up the timing gun to cylinder 1, got her up to tell and then checked the timing. As I suspected the po was messing with the timing as well. It's way past the 12degree timing marks. Shes running rough at 600 rpm idle. I think base is 6 to 8? So I'm going to fire her up again and try to see if it what happens when I move it to 8. Does thus all sound right?

Ok I set it to approximately degrees and it idled a bit lower and rougher at about 575rpm as per the dash tachometer. I don't have a shop tachometer. Timing marks was bouncing around pretty good. Next step i backed off both fuel mixture screws one full turn each. Now idling smooth at 800rpms. Should be at 650 to 750? Now do I set the idle in the water or on the trailer?