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I have a 69 with a 427 tri power carb setup. Today I noticed fuel leaking from the center carb. It appears to be coming from where the carb attaches to the manifold. See attached pics. Thoughts? New gasket needed? Is this a relatively simple repair?
It's been a while, but I think you need to remove one of the end carbs to get the center one off. At that point, I would regasket all three. Do not over tighten the mounting bolts/nuts. Something like 60 INCH pounds. Is the fuel line kinked to that carb or just looks that way in the picture?
It's been a while, but I think you need to remove one of the end carbs to get the center one off. At that point, I would regasket all three. Do not over tighten the mounting bolts/nuts. Something like 60 INCH pounds. Is the fuel line kinked to that carb or just looks that way in the picture?
the fuel line is bent a little bit not kinked. Is there any adjustment necessary to the carbs after replacing the gaskets or just remove and replace? Is there a gasket rebuild kit available?
At the minimum float level, idle speed, and mixture screws. Have you converted to manifold vacuum from ported for the vacuum advance? Contact Lars, here on the forum, for his tuning guides. Is yours a 400 or 435 engine?
At the minimum float level, idle speed, and mixture screws. Have you converted to manifold vacuum from ported for the vacuum advance? Contact Lars, here on the forum, for his tuning guides. Is yours a 400 or 435 engine?
this sound like it will be beyond my capabilities. Should the carb be rebuild with new all new gaskets? Looks like the fuel is coming out from within the carb and not at the base where it attaches to the manifold. Are there internal gaskets?
Yes. float bowl, accelerator pump, metering block, throttle plate and probably more than that. I had Eric go through my trips a few years ago and they are still running perfect. He is at http://www.vintagemusclecarparts.com/ Eric actually installs and sets up each carb on a running engine.
Yes. float bowl, accelerator pump, metering block, throttle plate and probably more than that. I had Eric go through my trips a few years ago and they are still running perfect. He is at http://www.vintagemusclecarparts.com/ Eric actually installs and sets up each carb on a running engine.
cool. thanks. Mine is a 400hp. I’ll reach out to Eric. I suppose I would just need to remove and ship. Any idea of a ballpark price for the rebuilds?
Thanks to everyone for the feedback. I decided to remove the carbs and am sending to Lars for rebuild. Do I need to do anything to protect the exposed manifold ports on top of the engine? Pic attached.
Also since the carbs are removed I would like to clean up the engine a bit. Also considering replacing the the head gasket as I believe there is a leak in the rear next to the firewall. I notice oil pooling under the distributor. Anything else I should go through while carbs are removed?
Stuff some shop rags (clean) in the carb ports. Make sure you have a head gasket and not a valve cover or intake gasket leaking. If I were pulling one head I'd do the other at the same time. Your call though.
Stuff some shop rags (clean) in the carb ports. Make sure you have a head gasket and not a valve cover or intake gasket leaking. If I were pulling one head I'd do the other at the same time. Your call though.
Before I got all excited about pulling the intake, I'd check the bolts == make sure they are nice and tight- be careful of the 4 bolts that are higher on the manifold than the others- one of them is just below the PCV hose in your picture-- it's VERY easy to snap an ear off the intake.. Wash things down with Brake cleaner or something and keep an eye on where the oil is coming from- it's possible that oil is wicking up the threads on one of the bolts- and very common. Cover the intake with clean rags as suggested- I use rags for a short term cover- any longer and it's my favorite is blue masking tape.
That is an aluminum intake. Make sure you are applying bolt torques meant for aluminum....not for steel. Also, use duct tape to seal off those openings. Even cloth can tear and end up in your cylinders. Might not hurt much...but ??? Clean the surface with volatile cleaner before putting tape down...or it won't stick.
You can't do any better than having Lars rebuild your carbs. Also ask his advice on how to detail the stuff you didn't send him. He knows all the 'tricks' and how to make that system look new.
Brian is sending his carbs out to me, and I'm building a test fixture so I can run and test the Tripower setup on my test engine. I'll post up some photos and progress report on this rebuild as it happens...
An old timer once told me to never use a cloth towel or rag to cover, or stuff one in, an engine opening.
He said that strands from a cloth towel could do serious damage to an engine if some get inside.
He always used paper towels as he said the paper fibers would do no damage in the oiling or water systems and would simply burn if they got into the combustion chambers.
Sounded reasonable.
02-09-2019, 01:12 PM
Fuel leaking from carb
