Home  |  Forums  |  914 Info  |  Blogs
 
914World.com - The fastest growing online 914 community!
 
Porsche, and the Porsche crest are registered trademarks of Dr. Ing. h.c. F. Porsche AG. This site is not affiliated with Porsche in any way.
Its only purpose is to provide an online forum for car enthusiasts. All other trademarks are property of their respective owners.
 

Welcome Guest ( Log In | Register )

2 Pages V < 1 2  
 Reply to this topicStart new topic
> Help! Rebuilt Carbs, Now Engine Car Shudders at 4k RPM
ThePaintedMan
post Nov 17 2013, 07:00 PM
Post #21


Advanced Member
****

Group: Members
Posts: 3,886
Joined: 6-September 11
From: St. Petersburg, FL
Member No.: 13,527
Region Association: South East States
That's a very common problem with Webers. Those ears for the float pivot pin are very fragile. I bet you could take the top to a radiator shop though and have them zap it real quick to weld the broken piece back on - it's aluminum.

Or you can get on the phone with Pierce Manifolds in California and they'll probably have a 44 top that they'll sell you fairly cheap.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
rhodyguy
post Nov 17 2013, 07:01 PM
Post #22


Chimp Sanctuary NW. Check it out.
***************

Group: Members
Posts: 22,098
Joined: 2-March 03
From: Orion's Bell. The BELL!
Member No.: 378
Region Association: Galt's Gulch
is this the set you were sent to replace the first ones? 44 bodies yes? this really sucks mike. you could try ACE too. common? (IMG:style_emoticons/default/dry.gif)

k
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
euro911
post Nov 17 2013, 07:13 PM
Post #23


Retired & living the dream. God help me if I wake up!
*****

Group: Members
Posts: 8,851
Joined: 2-December 06
From: So.Cal. & No.AZ (USA)
Member No.: 7,300
Region Association: Southern California
On Webers, the tabs that the float pivot rod slides into is cast in the carb top.

This shows the missing portion of the tab

Attached Image
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
'70PVW914
post Nov 17 2013, 07:50 PM
Post #24


Newbie
*

Group: Members
Posts: 29
Joined: 1-November 13
From: Boulder, Co
Member No.: 16,594
Region Association: Rocky Mountains
Thats the spot....theres also this, i posted to the classifieds post as well.


...some nasty looking sheering of metal where the throttle linkages attach....are these carbs still usable, or should I stop dumping time and money into them?

Attached Image
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Dr Evil
post Nov 17 2013, 07:58 PM
Post #25


Send me your transmission!
***************

Group: Members
Posts: 23,002
Joined: 21-November 03
From: Loveland, OH 45140
Member No.: 1,372
Region Association: MidAtlantic Region
QUOTE(euro911 @ Nov 17 2013, 08:13 PM) *

On Webers, the tabs that the float pivot rod slides into is cast in the carb top.

This shows the missing portion of the tab

Attached Image

Doh, I looked right past that to what looked like a missing tab on the float. I see. Yes, now all the other recommendations make sense. (IMG:style_emoticons/default/smile.gif)

Weld it, not a prob.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
ChrisFoley
post Nov 18 2013, 05:59 AM
Post #26


I am Tangerine Racing
*****

Group: Members
Posts: 7,937
Joined: 29-January 03
From: Bolton, CT
Member No.: 209
Region Association: None
The broken leg is a bit too delicate to weld back on, but a good aluminum welder can build up the remaining leg so a fresh hole can be drilled.
I wouldn't bother trying to reproduce the split though.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
'70PVW914
post Nov 19 2013, 07:02 PM
Post #27


Newbie
*

Group: Members
Posts: 29
Joined: 1-November 13
From: Boulder, Co
Member No.: 16,594
Region Association: Rocky Mountains
QUOTE(Racer Chris @ Nov 18 2013, 04:59 AM) *

The broken leg is a bit too delicate to weld back on, but a good aluminum welder can build up the remaining leg so a fresh hole can be drilled.
I wouldn't bother trying to reproduce the split though.



Thanks man, this sounds like the most viable option! Gonna take it to get welded tomorrow....shouldn't be but a few sheckles i'd imagine.

After that I'm all set with new gaskets to do the valve adjustment, clean out my heater boxes, the carbs and the float adjustment, then sync and tune! Goal is to have her purring in my driveway by this sunday! Looks like I may even get a day of skiing in before then! Living in Colorado totally sucks! (IMG:style_emoticons/default/laugh.gif)
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
brant
post Nov 19 2013, 07:11 PM
Post #28


914 Wizard
**********

Group: Members
Posts: 11,641
Joined: 30-December 02
From: Colorado
Member No.: 47
Region Association: Rocky Mountains
be careful where you take that for welding

its a delicate part and takes a little skill or experience.
the muffler shop on the corner is not a good idea
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
ChrisFoley
post Nov 19 2013, 07:44 PM
Post #29


I am Tangerine Racing
*****

Group: Members
Posts: 7,937
Joined: 29-January 03
From: Bolton, CT
Member No.: 209
Region Association: None
QUOTE(brant @ Nov 19 2013, 08:11 PM) *

be careful where you take that for welding

its a delicate part and takes a little skill or experience.
the muffler shop on the corner is not a good idea

(IMG:style_emoticons/default/agree.gif) (IMG:style_emoticons/default/agree.gif) (IMG:style_emoticons/default/agree.gif)

Whoever does that really needs to already have experience doing buildup on tiny aluminum objects.
Its so easy to overheat that little thing and melt it into oblivion.
It may cost up to half an hour of labor.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
brant
post Nov 19 2013, 08:06 PM
Post #30


914 Wizard
**********

Group: Members
Posts: 11,641
Joined: 30-December 02
From: Colorado
Member No.: 47
Region Association: Rocky Mountains
There is a certified aluminum welder in longmont...
the guy (as mentioned previously) has helicopter certification
he is absolutely amazing....

I've had him weld pot metal carb bowls previously.
sure its 5-10 bucks higher... but not screwing around and done right
cheap compaired to a new set of carbs!

b
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
stugray
post Nov 19 2013, 08:43 PM
Post #31


Advanced Member
****

Group: Members
Posts: 3,825
Joined: 17-September 09
From: Longmont, CO
Member No.: 10,819
Region Association: None
Dont know if blurry pics help but this is a view of your problem:

(IMG:http://www.914world.com/bbs2/uploads_offsite/i366.photobucket.com-10819-1384915397.1.jpg)
Wish I had a pic of the float on to show how much room you have to work with.

More pics of carb rebuild in that folder.

http://s366.photobucket.com/user/stuartjgr...914_build_carbs
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
stugray
post Nov 22 2013, 03:36 PM
Post #32


Advanced Member
****

Group: Members
Posts: 3,825
Joined: 17-September 09
From: Longmont, CO
Member No.: 10,819
Region Association: None
Any luck?

Something I forgot to mention. I stumbled across my aluminum solder rods last night.

You could build up that area with Aluminum solder and then redrill that hole.
If it doesnt work, that just means you couldnt get the solder to stick, so no harm done.

It would be nice to try on something other than the real part.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
somd914
post Nov 23 2013, 10:53 AM
Post #33


Member
***

Group: Members
Posts: 1,171
Joined: 21-February 11
From: Southern Maryland
Member No.: 12,741
Region Association: MidAtlantic Region
Not sure if you've been able to get your float leg repaired yet, but I went through the exact same break. My son has a friend who welds as a hobby - did a nice job.

All I asked for was a weld, I'd grind and drill. He did it all including a media blast, and dropped it off at the house for no charge - guess there is hope for the younger generation!

Attached Image
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
'70PVW914
post Nov 23 2013, 10:10 PM
Post #34


Newbie
*

Group: Members
Posts: 29
Joined: 1-November 13
From: Boulder, Co
Member No.: 16,594
Region Association: Rocky Mountains
Hey folks,

Got the repair done to the pivot leg and it looks great....
Attached Image
not as great as yours somd914...but functionally, it will work just fine and is a very strong weld! Had a friend of a friend who makes bicycles and did it for a 6-pack!

Have the new accelerator pumps on and floats adjusted! Just waiting for the warmth of tomorrow to properly seal up the valve cases after completing adjustment (yes!), do an oil change, put on the carbs and fire her up!

Hoping for the best!
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
euro911
post Nov 23 2013, 10:33 PM
Post #35


Retired & living the dream. God help me if I wake up!
*****

Group: Members
Posts: 8,851
Joined: 2-December 06
From: So.Cal. & No.AZ (USA)
Member No.: 7,300
Region Association: Southern California
Very good (IMG:style_emoticons/default/thumb3d.gif)
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
« Next Oldest · 914World Garage · Next Newest »
 

2 Pages V < 1 2
Reply to this topicStart new topic
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:

 

Display Mode: Standard · Switch to: Linear+ · Switch to: Outline

Track this topic · Email this topic · Print this topic · Subscribe to this forum

- Lo-Fi Version Time is now: 16th June 2024 - 09:29 PM
Invision Power Board v9.1.4 © 2024  IPS, Inc.
All rights reserved 914World.com © since 2002
914World.com is the fastest growing online 914 community!
We have it all, classifieds, events, forums, vendors, parts, autocross, racing, technical articles, events calendar, newsletter, restoration, gallery, archives, history and more for your Porsche 914 ...