texasz Posted March 7 Author Share #13 Posted March 7 4 hours ago, Terrapin Z said: I'll look after work, but I think I only have the 240 tube. The 240z has the extra nipple, and the 280z does not. Sound correct. I think what the different is has to do with carbs vs EFI. I removed the tube without the nipple and need to get the one with the nipple to fit securely as I am running carbs on this engine. Link to comment Share on other sites More sharing options...
CanTechZ Posted March 7 Share #14 Posted March 7 11 minutes ago, duffymahoney said: Failed designs. The compression was neat, but the two blocks I tested have a sharp edge that tears the rubber/ silicone. The joys of R&D. Welcome to my world. Lol 1 Link to comment Share on other sites More sharing options...
zKars Posted March 7 Share #15 Posted March 7 6 hours ago, texasz said: I think what the different is has to do with carbs vs EFI. I removed the tube without the nipple and need to get the one with the nipple to fit securely as I am running carbs on this engine. No need for the nipple unless you’re going to keep using the flow control valve, which is where that nipple goes to. This is a 280 right, so you don’t have that, your tank vent is via the charcoal canister. I really should go back and read the start of the thread…. If you really want one with a knipple, I can send you one of mine. 1 Link to comment Share on other sites More sharing options...
texasz Posted March 8 Author Share #16 Posted March 8 14 hours ago, zKars said: No need for the nipple unless you’re going to keep using the flow control valve, which is where that nipple goes to. This is a 280 right, so you don’t have that, your tank vent is via the charcoal canister. I really should go back and read the start of the thread…. If you really want one with a knipple, I can send you one of mine. No, this is a 1970 240Z with an L28 in it now. I removed the tube without the nipple to install one with the nipple. As shown in the video, the replacement tube with the nipple seems to be too small to snugly fit in the block. I'm open to getting another one and seeing if it will fit better. Just looking for a solution. Link to comment Share on other sites More sharing options...
crayZlair Posted March 8 Share #17 Posted March 8 On my Autocross car I use the outlet strictly for a breather. Took a 3/4" hose barb and turned the threads down for a tight fit. Gooped it up with metal-type JB Weld, and it hasn't moved in eight seasons. I call that a win. 1 Link to comment Share on other sites More sharing options...
Terrapin Z Posted March 8 Share #18 Posted March 8 7 hours ago, texasz said: No, this is a 1970 240Z with an L28 in it now. I removed the tube without the nipple to install one with the nipple. As shown in the video, the replacement tube with the nipple seems to be too small to snugly fit in the block. I'm open to getting another one and seeing if it will fit better. Just looking for a solution. I have one on a 73 240z engine, I tried to get it off the motor yesterday. It was moving a little but did not come off. I will try some more today as I am off work early and the power is off to boot. It is not raining so a good time to work on it some more. 2 Link to comment Share on other sites More sharing options...
texasz Posted March 10 Author Share #19 Posted March 10 On 3/8/2024 at 3:26 PM, Terrapin Z said: I have one on a 73 240z engine, I tried to get it off the motor yesterday. It was moving a little but did not come off. I will try some more today as I am off work early and the power is off to boot. It is not raining so a good time to work on it some more. Any luck? Link to comment Share on other sites More sharing options...
Terrapin Z Posted March 11 Share #20 Posted March 11 Not yet, I didn't spend much time on it as we needed to fix some pot holes in the driveway. Power was out again today. I'll keep at it, It is pouring out right now. Apologies for taking so long. Link to comment Share on other sites More sharing options...
Terrapin Z Posted March 11 Share #21 Posted March 11 @texasz A break in the rain, a ratchet strap and some persistence. Link to comment Share on other sites More sharing options...
Captain Obvious Posted March 11 Share #22 Posted March 11 (edited) I've had the same experience as the rest of you. I've pulled them from engines, and then when I refit them, they slip in instead of pressing in. I assume the metal on the tube deforms on the original press fit. I haven't tried to fix one yet, but off the top of my head, I'd try a Loctite sleeve retainer. I've got experience with Loctite 640 and I'd try that. Might be something better, but since I have that on the shelf, I'd start there and see what happens. Right there on the package, it says "Restores fit to out-of-tolerance assemblies". Edited March 11 by Captain Obvious Added pic Link to comment Share on other sites More sharing options...
Captain Obvious Posted March 11 Share #23 Posted March 11 Or, if I got energetic. I'd make a mandrel tool to expand the tube larger a couple thousandths and press it in. But I'm not sure if I'm that energetic. 2 Link to comment Share on other sites More sharing options...
texasz Posted March 11 Author Share #24 Posted March 11 11 hours ago, Terrapin Z said: @texasz A break in the rain, a ratchet strap and some persistence. Fantastic! Can you put calipers to the silver area that gets press fit into the block and measure it? Link to comment Share on other sites More sharing options...
zKars
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