Breather Mold Project

[gbmidyear66]

I've been chasing a high/unstable idle issue for awhile and tonight think I hay have found part of my issue. The connection of the vacuum pipe to the Breather Mold.

The pipe has a lip on it, mine was not pushed into the mold and I believe was intermittently leaking. It would be great if the mold had a female thread to accept the lip on the vacuum tube and hold it firmly in place - is that a possibility?

See attached (not fully inserted into mold)

Glenn

[mgbrv8]

Originally Posted by gbmidyear66

I've been chasing a high/unstable idle issue for awhile and tonight think I hay have found part of my issue. The connection of the vacuum pipe to the Breather Mold.

The pipe has a lip on it, mine was not pushed into the mold and I believe was intermittently leaking. It would be great if the mold had a female thread to accept the lip on the vacuum tube and hold it firmly in place - is that a possibility?

See attached (not fully inserted into mold)

Glenn

On the PCV valve part??

Dave

[tomtom72]

Glen, a small ideal clamp will take care of that situation. I have found that after only a short time in service on the motor even NOS stuff gets loose....for some reason that is not clear to my thick skull.....and it leaks. I believe that "ridge" on the metal PCV pipe is just a "stop" so the F-connector doesn't miss align...?

Befroe I coughed up the cash for the samco set up I had ideal clamps everywhere on the OEM set up except for where the F-connector mates to the tops of the PCV's no place to put the clamp so I used a zip tie horizontally.

After I got the samco stuff & installed it I had thought " now this stuff fits tightly!" Yea it did, but I had to go back and fit ideal clamps everywhere on that stuff also to get the optimal answer to the leaks, JMHO on "optimal"!


Tom

[mgbrv8]

Originally Posted by gbmidyear66

I've been chasing a high/unstable idle issue for awhile and tonight think I hay have found part of my issue. The connection of the vacuum pipe to the Breather Mold.

The pipe has a lip on it, mine was not pushed into the mold and I believe was intermittently leaking. It would be great if the mold had a female thread to accept the lip on the vacuum tube and hold it firmly in place - is that a possibility?

See attached (not fully inserted into mold)

Glenn

Like this Glenn, I cut away the section so you can see the inner profile? Sorry for the late response I've been a bit busy this weekend. What dose everybody else think?

Dave

[A26B]

Originally Posted by mgbrv8

Like this Glenn, I cut away the section so you can see the inner profile? Sorry for the late response I've been a bit busy this weekend. What dose everybody else think?

Dave

I don't think the aluminum pipe/tube is supposed to go in that far. To do so would make the tube crooked and/or pull on the PCV rubber connector. It has vacuum, not pressure.

[jrd1990zr1]

Originally Posted by mgbrv8

Like this Glenn, I cut away the section so you can see the inner profile? Sorry for the late response I've been a bit busy this weekend. What dose everybody else think?

Dave

I have an OEM piece. I will try to measure the location of the "groove" later tonight and post it up.

[mgbrv8]

Gentlemen feel free to chime in here, I have never messed with or lived with a LT5 like you guys have and for as long as most of you have. If there are parts or aspects that you see need improving on or just plain annoy you, I will do my best to engineer towards a improvement, that is what my background is in. I welcome criticism. Also if you don't feel comfortable posting a comment due to you not being sure of the accuracy of your statement please feel free to PM me . I see this as a way to ensure the ability of maintaining our cars for the future with out shelling out unnecessary capital due to greed of others. The Zr1 shares so many parts with the base corvette we will be able to take care of most of it easily due to reproduction parts. Now the LT5 its self is a different story, not vary many things are being made for it, so I have the means and the resources to remedy that so I intend to do so and do my best to make owning a ZR1 a reasonably viable option for people, with your help. Its kinda neat the hole forum will help with the R&D of the parts they need, kinda like a ZR1 COOP.

Dave

[Z51JEFF]

Originally Posted by mgbrv8

I want it to be in the $10 range but I know the fist few runs will be $18ish to cover initial material cost. I also wont sell more then 2 per mailing address to avoid people buying them to resell. I just want to give the ZR1 community other options, I am not looking for a profit I just want to help.

Dave

Thank you Dave for the time,effort.This makes perfect sense to me,if somebody sells parts for a living let them foot the cost for tooling,molds whatever.In the future Id be willing to help pay for having a part made with the understanding the parts would not be sold in bulk.One suggestion on the F fitting,would it be possible to tighten the inside diameter for the 2 PCV nipples?

[A26B]

I don't sell parts for a living, but I do sell gaskets, seals & parts. I know about and fully understand what it takes to manufacture. With Jerrys Gaskets, I never "try" to sell anyone anything. I do attempt to help anyone that askes for it.

I will offer a though for your consideration though. Based on Jerrys Gaskets sales over the last 3+ years, I know that there are many, many ZR-1 owners, world-wide, that need parts, including the parts that Dave is planning to make. Maybe Dave's goal is to just make them for anyone who happens to find them on the forum, I really don't know and it's fine with me if that is his objective.

However, I do have the customer base and the presence to reach ZR-1 owners well beyond the forum. If Dave is willing, I would like to buy from Dave and add those parts to the web store. Sure I will pay Dave more than his cost. Sure I will resell for a higher price. The result will be providing Dave's part to others in need who would otherwise be unable to obtain one. Side benefit of manufacturing in greater quantity is the cost per unit comes down. That would be a win-win deal.

Just a thought..... Thanks Dave for doing this. It's needed to be done for a long time. I've worked on it, but just can't bring myself to do business with China and domestic manufacturing is way to costly up front. If you're interested, let me know & we can talk about it.

[mgbrv8]

I appreciate the the offer sir but my goal is to help the people on the forum and the ZR1 community. I don't need the money and I have the time occasionally. So I plan to make the molds and make small runs of parts and only sell limited amounts to ZR1 owners.

Respectfully
Dave