Thanks for the advice Blake. What would you suggest could be a better option? Should I just let them hang?

Thanks

DSE Rack help
 

it's been awhile since I've updated this thread. The car is running and moving under its own power finally! Monday got a alignment done and started the exhaust.



Im dealing with a leaking 9/16-18 (hot side) fitting on the DSE rack. The fitting came with a Teflon washer, I've now been through three. I've tried copper, drain plug gasket and a O-ring. With the O-ring I used the Loctite 545 hydraulic sealant and without even starting the car as I was allowing time for it to set up it started to seep in about 15-20 minutes.

Anyone else have this problem? Any tips to get a good seal?

If anyone has pics of their DSE rack(any DSE rack) where the fittings thread in and can post a pic I'd appreciate it. I'm trying to see if the casting looks different.

Thanks

I tried to turn the pics but it didn't work.

Here's a few of the DSE rack. FYI that's a cat hair inside.

The sealing surface doesn’t even look machined so I don’t see how that will ever seal. It’s tough to tell due to the fluid but it looks like it’s machined for a different style adapter, maybe AN or internal o-ring. I’m would contact DSE.

Don

I remember someone posting about dse having a run of bad fittings and not machined right. I can take a pic of two dse racks on sat if that helps.

Now that you say that I remember that too. Here is the thread:

https://www.pro-touring.com/threads/...highlight=Rack

Don

I think that fitting needs to be an O-ring boss fitting and not a straight fitting. That wide 45 degree edge is for the o-ring to mush into(my guess).

Is the fitting too long and bottoming out before the ring can seal? You can try a Stat o seal - https://www.pegasusautoracing.com/pr...CABEgKdIfD_BwE

You can find these at other places too under different names..

I've been in contact with DSE and they are saying the chamfered edge is where the seal would come from with either the Teflon washer they provided or a soft metal such as copper or aluminum. The DSE 9/16-18 part number 090210S is what the offer to work with the rack.


Thanks for the link Don. By the way its not bottoming out.

Please if you can take some pics and post.

Thanks!

I went and bought another fitting today that uses a fairly fat O-ring, I'm gonna try that today.

I'm getting conflicting info about what material should be used, how tight it should be and weather or not to use high pressure hydraulic thread sealant (Loctite 545).

that rack is not machined for teflon washer. requires o-ring and should not require sealant

Thanks! DSE never said try a O-ring I took it upon myself to give it a shot. And......woke up this morning to a small amount on the garage floor. It's not the best pic but you can see how the O-ring has torn some. I made sure the O-ring was wet with oil and it still damaged it.........ugh.

There should be a washer between the fitting and o-ring as far as I know.

Google 9/16-18 ORB and you will see fittings with washers.

Don

Female port damage?
 

Hey - Just thought I'd chime in on this one. I work for Parker Hannifin, and we make fittings by the ton. The second picture you posted shows a lot of damage around the base of the fitting. Can you take a pic of the female port WITHOUT the fitting in it? There should be a chamfer or countersink at the mouth of the female port - which accepts the o-ring. Either that port is buggered up, or the o-ring is too large in cross section - which will make it bunch up as it runs out of room while being installed. Hope this helps a bit.
Jim

PS. Actually just went back a page and saw the additional pics and comments...… We are getting closer!
#1. Measure from the shoulder / hex of the fitting to the end of the thread - you are trying to determine how deep that fitting will screw into the female port
#2. Now measure from the face of the female port down to where the fitting would bottom out...…. Don't measure to the center of the female port - as it looks like it is deeper there due to a drill point. You need to see what the
shallowest dimension is - out near the outer wall of the female port
#3. How do things compare? Is the male thread too long when compared to the depth of the female port? If so - it won't allow enough compression of the o-ring.
#4. To me - the chamfered edge of the female port looks poorly machined - I am seeing sharp metal there - which can cut that o-ring
#5. Have DSE tell you what that female port is supposed to be...… If it is a 9/16-18 SAE port - that is a standard design that everyone should be machining too. You cn then determine the proper O-ring size for the male fitting.
Using a washer to seal that joint really seems wrong to me. The chamfer at the mouth of the female port is there to accept an O-ring. DSE should know that.

I think the rack is made for an ORB fitting but, the Stat o seals work too. Parker makes them(and others). The crush of the washer and seal of the rubber is good. If it is steering fluid, I would use a Viton o-ring material. It is strong enough for some real harsh chemicals.

I know its suppose to be a dse rack, but I just looked at your pic again. Are you sure it doesn't use this style fitting?
https://detroitspeed-1.azureedge.net...F47968BAA-8516

Yeah, I asked about that. They said nope it’s the.....ORB?

I think I got it licked now! I went to a hydraulic shop and he had a better rubber O-ring and it seems to have worked. I put a few miles on it today and all seems good!

Looks like you need a washer between the fitting and the o-ring and the o-ring should have a thinner cross section...

Andrew

Wow does time fly! It’s been a year I’ve been on the road with it and the best way to describe the experience is ........ Love, Hate.

Just to catch up I have somewhere around 1400 miles logged, two Speed SF autocross events and did a AFR head upgrade.

That's awesome! Very cool to be out enjoying the car.

Thanks for fixing the pic Jody.

Love this build and fully appreciate the Love,Hate relationship. Can you expand on your thoughts?

Sure.......A few thoughts.


The DSE front clip performs great although I wish the turning radius was better. DSE says max tire size 295 up front and I think with minor mods you can probably fit a 305 but I can't imagine how bad the tramline would be, the tramming with 275's I'm running now is definitely noticeable.

I wish I would sprung for the Qudra Link in the beginning, before I had custom exhaust made, bought a new gas tank & rebuilt the rear end (doing stuff 2x sucks). Getting the ride height to match the front was an ordeal, the leafs ride like crap, I added Global West Delrin bushings to stop lateral flex and eliminate tire rub and it made the ride more harsh.

But....when I drive it like an A-hole......it makes me smile. And I love that!

Really glad to hear you're getting seat time with the car. They're always works in progress.