Help car drops 700 rpm when going from neutral to first gear - Page 3

1320racer · 01-19-2014, 01:40 PM

get the carb off yet?

ollucky · 01-19-2014, 02:04 PM

Please Call Me 210 533 8058 Raul

ollucky · 01-19-2014, 03:06 PM

Quote:

Originally Posted by SSDart

All four? How big are the holes? If the holes are too big they can create issues also

.165 bore have use this carburetor for years and have never had this problem.

HandOverFist · 01-19-2014, 03:17 PM

Quote:

Originally Posted by ollucky

.165 bore have use this carburetor for years and have never had this problem.

There is the key. What has been done/changed since the last time it ran properly? You stated this is a new combination...did you by any chance add/change any timing related or ignition components?

1320racer · 01-19-2014, 03:52 PM

Raul, making any headway?

ollucky · 01-19-2014, 07:07 PM

Quote:

Originally Posted by 1320racer

Raul, making any headway?

1320 Racer ... Please send me your number and I'll call you. thanks
Raul

ollucky · 01-19-2014, 07:49 PM

Quote:

Originally Posted by HandOverFist

There is the key. What has been done/changed since the last time it ran properly? You stated this is a new combination...did you by any chance add/change any timing related or ignition components?

Just engine combo long block? Went from a 355 to a 406. Same Heads Intake and Carb for the last 15 years.

HandOverFist · 01-19-2014, 08:08 PM

Quote:

Originally Posted by ollucky

Just engine combo long block? Went from a 355 to a 406. Same Heads Intake and Carb for the last 15 years.

My point was carb's don't just go bad/quit working overnight. Unless it has sit idle for a very long time with old fuel I would tend to look elsewhere first. Someone suggested earlier trying another carb for effect...way less time consuming and a quick way to eliminate one potential area.

Mike Jones · 01-20-2014, 09:30 PM

Quote:

Originally Posted by ollucky

New combination 406.

Car drops 700 rpm when going from neutral to first gear and will eventually die. It gets worse when the car is at operating temp. Ignition?

Please Help.

I`m sure you`ve already looked for vacuum leaks....

Bimbo Jones · 01-21-2014, 10:53 AM

I had the same issue with a 750dp on my wagon. It turned out to be the transfer slot on the secondary's. I bought an adjustable 1 to 1 linkage for the carb. While it look to be adjusted correctly on the bench but when I attached the quick disconnect linkage to the carb it pulled the secondary butterflies just enough to cover the transfer slot. I put the original bent metal part back on problem was corrected. Good luck.

01-19-2014, 01:40 PM	#21
1320racer VIP Member Join Date: Nov 2007 Location: New Jersey Posts: 2,628 Likes: 160 Liked 759 Times in 379 Posts	Re: Help car drops 700 rpm when going from neutral to first get the carb off yet?

01-19-2014, 02:04 PM	#22
ollucky Junior Member Join Date: Jun 2009 Location: San Antonio, Texas Posts: 32 Likes: 0 Liked 0 Times in 0 Posts	Re: Help car drops 700 rpm when going from neutral to first Please Call Me 210 533 8058 Raul

01-19-2014, 03:52 PM	#25
1320racer VIP Member Join Date: Nov 2007 Location: New Jersey Posts: 2,628 Likes: 160 Liked 759 Times in 379 Posts	Re: Help car drops 700 rpm when going from neutral to first Raul, making any headway?

01-21-2014, 10:53 AM	#30
Bimbo Jones Member Join Date: Nov 2008 Posts: 109 Likes: 0 Liked 0 Times in 0 Posts	Re: Help car drops 700 rpm when going from neutral to first I had the same issue with a 750dp on my wagon. It turned out to be the transfer slot on the secondary's. I bought an adjustable 1 to 1 linkage for the carb. While it look to be adjusted correctly on the bench but when I attached the quick disconnect linkage to the carb it pulled the secondary butterflies just enough to cover the transfer slot. I put the original bent metal part back on problem was corrected. Good luck.