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I need to see the fitting in the intake...but if not... oh well I tried. If in can not clearly see what you have going on so I am not straining my eyes to see stuff. I cannot help you.
What size is this hose that the yellow arrow is pointing to that seems to be going to your distributor advance pod??? Pull that hose off and look at the fitting in the carb base and reply...or don't do it. I SWEAR it looks to be about 3/8'' which is wrong...due to the pod does not have a 3/8" port on it does not take a 3/8' hose. It would take a 5/32" or 7/32" hose.
In the photo below I think this is where your intake vacuum fitting would go and it is covered up by the rear bowl of your carb. Am I correct.????? The red arrow is pointing to it.
Had a little time to check it out . Didn't have a vacuum hose the size you said but I did change it to a 3/16 fuel hose it seamed to fit nice not to hard to get on but nice and tight shouldn't need any clamps . will get the correct size vacuum hose next time I go to town if you think the hose I put on won't work correctly . The red arrow has a elbow going into the intake there which the booster is connected to , there's not much space between the elbow and the fuel bowl. If i remember right the guy said he did',t have a 3/8 elbow he put in a 1/2 and then a small piece of hose to reduce it to 3/8 . Really don't want to change if not really necessary would have to take off carb to get to it .
The top vacuum port you may be referring to is ported vacuum...thus none of your vacuum hoses should go to it currently that you need to have a constant vacuum source on.
I am shocked that this carb does not have at least one 3/8" port in the baseplate for a constant vacuum source..
It does in post 17 I said brake booster to intake and pvc to base of carb which is 3/8 just didn't say 3/8 . The carb has 3 ports 1 3/8 in back at bottom and two on pass side .(m and I also have a 1/2 inch elbow on intake which is necked down to 3/8 ) but when I put my gauge on the two on pass side neither showed full vacuum 0 at idle then up to 15 when I revved it
Okay. Then with the one 3/8" port in the rear of the carb That can be sued or your brake booster all by its self.
Then the port that is in your intake under your carb bowl can be used for all of the vacuum hoses that is being used for your PCV.
Without a GOOD photo of this fitting someone used in the intake...it is hard to tell you what to do other than what has been done and that is use vacuum 'T's to get the other vacuum hoses to connect to it.
And as for your PCV sucking in oil. I would also need to see the baffle that was used. Just because it is in there...the taller valve cover may make it so it is in the spatter area of oil and oil is getting sucked into it due to the baffle is not low enough and under the spatter zone and allowing oil to go down the sides of the baffle and drip off.. If the rocker arms are too wide to allow this baffle to be lowered...then either custom one needs to be made to lower it or live with the oil consumption. I would fix it due to if your PCV is on the intake fitting then cylinder 8 is the one that will be burning this oil. Assuming that your PCV system is right and your fresh air is coming in the engine on the right valve cover is doing its job. and the engine is sealed up so the fresh air coming in the engine is where the filtered fresh air is ONLY coming in at.
So just so I understand your saying I can connect the pvc , trans ,lights all to the intake port . And booster to the 3/8 on the carb . Right now Pvc is on the drivers and fresh air is on the pass side .
You can do it however you want to. I have asked for GOOD photos several times after the photos you posted were not the best possible (as I mentioned) and I guess my request for these photos are falling on deaf ears.
Best to you and the decisions you make to correct this problem.
Thanks for the help . What I think I am going to do because of the lack of vacuum ports is . Attach the pcv to port on the intake but put a oil catch can in the line . Attach the brake booster to the 3/8 port on back of carb . Get a vacuum pump and reservoir and attach the lights and trans to it . Does this sound like it will work ? Plus it would be interesting to see how much if any oil comes through the catch can .
The lack of vacuum ports an be easily rectified if I could see how the fitting coming off your intake is currently.
As for the added vacuum pump...I guess it will ok ...or it might burn up due to constant use. But I know I would not do that if it is not needed which it seems like it does not need to be installed.
So employ your decision and I hope it works out as you imagined it will.
I will add this even though you did not ask or may feel that there is no problem here. But in the photo below from what I can see is a fuel line that is going to your carb that appears to be coming off of a fuel pressure regulator set-up and the yellow arrows are pointing to what looks like hose clamps and a rubber hose joining the fuel pressure regulator line set-up that they concocted. So... FOR WHAT IT IS WORTH...I would figure out another way of supplying your fuel at this area so you do not have a rubber hose with hose clamps keeping it sealed up. You can possibly be asking for a leak and fire. Whether you go with stainless steel braided hose and correct fitting that take the rubber hose and hose clamps out of the scenario. Just saying. this due to the number of Corvettes I work on that have a fuel delivery system so out of whack that I am shocked on how companies can sell stuff that may work fine on a car not on the street but if it is on the street . The fuel delivery system should have been better thought out....much like how GM did and uses a steel line from the fuel pump to the carb so it can not fail or be easily damaged and start to leak. Or leave it alone due to it seems to be working fine NOW...but I hope if you do that I hope it stays that way. Because the way that rubber hose it looking in the photo it does not look that good.
[QUOTE=DUB;1597823420]The lack of vacuum ports an be easily rectified if I could see how the fitting coming off your intake is currently.
As for the added vacuum pump...I guess it will ok ...or it might burn up due to constant use. But I know I would not do that if it is not needed which it seems like it does not need to be installed.
So employ your decision and I hope it works out as you imagined it will.
I will add this even though you did not ask or may feel that there is no problem here. But in the photo below from what I can see is a fuel line that is going to your carb that appears to be coming off of a fuel pressure regulator set-up and the yellow arrows are pointing to what looks like hose clamps and a rubber hose joining the fuel pressure regulator line set-up that they concocted. So... FOR WHAT IT IS WORTH...I would figure out another way of supplying your fuel at this area so you do not have a rubber hose with hose clamps keeping it sealed up. You can possibly be asking for a leak and fire. Whether you go with stainless steel braided hose and correct fitting that take the rubber hose and hose clamps out of the scenario. Just saying. this due to the number of Corvettes I work on that have a fuel delivery system so out of whack that I am shocked on how companies can sell stuff that may work fine on a car not on the street but if it is on the street . The fuel delivery system should have been better thought out....much like how GM did and uses a steel line from the fuel pump to the carb so it can not fail or be easily damaged and start to leak. Or leave it alone due to it seems to be working fine NOW...but I hope if you do that I hope it stays that way. Because the way that rubber hose it looking in the photo it does not look that good.
Does this help ?. The hose on the gas line was put in this year when I get a chance I will put on hard lines like you suggest . I added a picture but it don't look it took will try again .
DUB[/QUOT
Yes its a 90 coming out of the intake going to the booster with the trans and headlights tee'd to it . the port next to it is going from bottom of carb to pcv
Well another 90 degree fitting could be put in that 90 degree fitting and then the factory fitting so you have all the ports in their correct position due to the vacuum line to the transmission usually has the steel line going into the top of the factory fitting. Because as you know transmission vacuum steel lines have a 180 degree bend in the line for a reason.
Don't know what the 180 in the trans line is about . Had the filter and fluid changed two years ago or around 2500 miles . It seems to work fine , except when the tee broke and that must of happened right before I got home because brakes were good and it shifted fine on a 75 mile ride . When I was about 1/2 mile from house brake pedal got hard and it shifted hard , all went back to normal when I replaced the tee . Just so you know nothing on the engine is original including the engine so I have no interest on trying to make it look correct like it did when it was new . You know way more about this then I do . So let me ask you this . I have 2 3/8 ports off the back , one on the carb other on intake . I also have 4 vacuum lines that have to be connected to something , Trans , Booster ,Headlamps, and Pcv . Which ones would you put together . I don't understand why my carb doesn't have a full vacuum on the side like my other ones had , it has two ports but neither shows full vacuum . Any help would be appreciated .
If you do not know WHY GM puts a 180 degree bend in the steel line....then look it up or go talk to an automatic transmission repair shop and find out WHY they do it. If you car does not have it and it works fine..then I guess you won't.. You should make some effort to educate yourself on this stuff if it is something you do not know anything about. And the REASON I am writing that is because other members have already given you answers to the questions you JUST ASKED.
Maybe you have the wrong carb for the application. I an cay that most carbs for the street will have another 3/8" port coming off the front or side for the PCV. And still have port in the back for the brake booster.
I have written a lot in this thread and I do not know you are reading this stuff from me and others or not.
Because like I wrote instead of you buying an oil catch can I would look at your baffle in your valve cover and see if it is how I described it so you DON'T have to buy a oil catch can and still have oil sucked out of your engine while driving it....and may need to modify the baffle in the valve cover.
I also mentioned the issue you may have by having your PCV hose routed to the intake fitting and what it can do to cylinder #8 and cause that cylinder to oil foul out the plug.
Also the fuel hose issue which is feel is more important than anything due to it can cause for a possible fire due to how that was concocted.
I do not know I this is really valid thread you you are just wasting peoples time. it is hard to say when answers are given along with good advice an we come back to the same questions.
Sorry for the inconvenience . I think I pay more attention to your little remarks in caps then what I need to do . But thanks for the help I will get it figured out .
Answering questions the first time is fine by me...having to go back over the same question when it has been answered is wasting time. and an inconvenience and makes us feel like what is being given is not being read. Correct me if I am wrong.in thinking that way. I am not getting paid to help you on this but I am spending my time to help you out....and that is MY CHOICE...so I know that. But there is a point when I feel I am wasting time. I tried.
