So I decided to replace my coolant line that has been leaking for a little bit now. I got a banjo fitting to -6AN to mate up to the stainless steel lines I got from a guy on one of the Mazdaspeed groups.
I pulled the old one off and it was just falling apart. Here are some pics:
The DEI heat sleeve and tape underneath just disintegrated as I pulled it off. I can't really fault them though. The coolant line was probably a half inch away from one of my exhaust manifold runners, so it was just seeing direct heat from that constantly. I tried to work with what I had when I was getting everything back together and ended up having to redo it. Do things right the first time boys!
I bought
this in order to go downward with the coolant line rather than up and over the turbo. It turns out you are not able to clear the bottom coolant port on the EFRs with a straight banjo fitting... You need one with a slight angle on it. So that didn't work. I found that out at 1:30 after messing with the car for an hour or so. My local race shop closed at 2... I rushed over and bought some 14mm x 1.5 to -6AN fittings and got everything figured out. The end result was 14mm x 1.5 to -6AN to a 90* -6AN fitting to a -6AN male to male adapter off of the turbo down to my ss line. The nightmare began here.
The turbo is pretty close to the block and one of the exhaust manifold studs is right up near where the banjo bolt goes in and the axle/oil drain are really in your way. I had the biggest pain in the ass of a time trying to get a wrench on each of those goddamn -6AN pieces to get them tightened up. I had to do them one by one on the turbo because there is not enough room to just twist the whole unit onto the turbo while on the car. After getting it all together and getting douched in coolant I go up into the engine bay again to fill up the coolant that I had lost. As soon as I took off the cap I hear a stream of coolant pouring down... I didn't tighten one of the fittings enough... So all of it came back off and I was able to get everything tightened up as best I could. The angle you're working at is so awkward, so I couldn't really tell how great I got it all on there. I went for a test drive and no leakage though, so I called it good.
We went out to dinner and I checked under the car every time we stopped. Everything seemed to be holding up.
I decided to ring it's neck a little bit to see if anything was gonna rattle loose or have problems when the car was under load. After that I started seeing some small drippage. I went to Harbor Freight to get a wrench for my angle grinder to swap the disks (unrelated, but ended up finding a ton of wrenches and stuff that I thought would be perfect if I had to tear all of this coolant line stuff apart again, so I ended up leaving with some offset box wrenches (perfect for the turbo coolant fitting), a small adjustable wrech since it was hard maneuvering my medium sized one, and a creeper, which I've been putting off buying for a while.
I get under the car after cooling off the garage and the first thing I see is this:
I check and it's actually oil though. I don't really see a ton of coolant or anything. I just assumed the puddles were coolant because I was messing with all of that. It turns out I didn't tighten up my oil drain off of the turbo after I was messing around on Saturday... Tightened it all up and wiped up the puddle of oil under the car. Checked the oil levels and I was perfect still. Just over half on the dipstick. It's lucky I didn't decide to go out and do pulls last night, because I could've definitely had some bad times with that.
After getting that tightened up I looked at the coolant lines just to see how it was holding up.
It was leaking a little bit from the fitting on the turbo itself. I was able to get my smaller adjustable wrench up on that and gave it a good quarter turn. I'm hoping that fixes that. I didn't notice coolant levels going down really, so I think it was a very small leak from that fitting. I'm going to go out and give it some hell today to see if I get any more drips, but I think we're finally good on this.
I have a dyno day that I set up for the guys here in Phoenix on the 24th, so I don't want to be dumping fluids anywhere.
My garage MVP is finally back and VERY necessary again. This is the first time I've had to fire it up in a while, so I was a little worried it wasn't going to work out.
All in all the car is running real well. I'm considering getting an exhaust cutout right off of my downpipe since the FullRace downpipe is actually only like 2.85" and not 3" as advertised... I'm going to go with a boost controlled cutout and have it open up after like 10psi or something and dump right to the ground. I'm wondering if some of my dropoff at the top end could be due to how restrictive this DP is and how much air I'm flowing. I'll update on that as soon as I figure out how I want to do it.