I have been running the TR-55's for about 5k miles now and can't tell a difference between those and the TR-5's.

 

A couple of thoughts.

I come up with similar numbers as yours except for DCR. I get up around 9.

If the plugs are in cylinder order it looks like #7 is lean. You might want to flow the injectors and put the higher flowing ones where the whiter plugs are.

Are the head chambers matched to the bore?

 

He has stock 317 castings. Pushing the bore out an extra .015 on each side makes little to no difference with stock valves. I would be willing to bet that when the guys does his heads, he will push the bore slightly over to match the 2.08 valve.

Brandon

 

Did you mean bore or chamber?

My point is that opening up the chamber would unshroud the valves and that does make a difference.

 

The heads have a 4.00" chamber width. I speak in terms of bore, because that is the focus of directed air flow. "Deshrouding" a 2.00" intake valve is pointless on an otherwise stock 317 casting, period. Not to mention the limitations of the stock valve job, and flat *** end of the intake valve. It doesnt make a difference.

Brandon

 

You definately aren't running all that rich.. Maybe you are at wide open throttle, but judging from the looks of your plugs you aren't running rich at part throttle. Definately looks like oil residue on the pistons to me.

And yes I think you should mill the heads as well..

 

Mr. Luos - I'm running the LS6 PCV setup, yet I'm still burning a good bit of oil. I'm thinking about putting a catch can setup in there. We'll see what I feel like....

gojo - I think others have answered your questions about the heads. As for the plugs, they are in order but the whitest ones correspond to cylinders one and two. I don't quite see what you're seeing in the #7 looking leaner.

1Quick - I was actually surprised the plugs came out looking this good, considering the AFR during the dyno runs and it smells rich as hell when it's running. If I'm sitting at a stop light the smell of gas just fills the car. Of course, my headers are leaking a bit at the collector and the y so once that gets welded up it should fix the smell a bit.

 

The plugs look alright, but mine aren't near that dark.

 

Sorry I didn't post pics, but when I pulled the heads to install Morel lifters and reinsert my 224/228 "AFR" cam, my combustion chambers and pistons were a lot cleaner because I installed and AMW catch can the last time I pulled the heads (about 7K miles ago). Typically they looked like yours before using the catch can, so IMHO the it works. Also, I've been running TR55's forever. Good luck.

 

I think I will be looking into the catch can setup. Is AMW the best bang for the buck, or what is everyone using? I'm not looking to spend a ton of money on a catch can system.

 

Breathers?

 

[QUOTE=ArcticZ28]
gojo - I think others have answered your questions about the heads. As for the plugs, they are in order but the whitest ones correspond to cylinders one and two. I don't quite see what you're seeing in the #7 looking leaner.
QUOTE]

The bottom left hand plug is whiter relative to the others. The LSx engines seem to burn the number 7 piston at times. If that was #7 and you were to run overall lean I was suggesting a precaution. I'll be flowing my injectors soon and will put the richest on 7 just in case.
Regarding the heads, I didn't have a question. I mistakenly assumed you were going with bigger valves. In which case unshrouding is a good thing. If your not it's not worth it.

 

[QUOTE=gojo]I think you are a bit confused on the plug layout. They are arranged as if you were looking at the front of the car. So they are numbered:
8 7
6 5
4 3
2 1

So the bottom left one would be cylinder #2.

As for the heads, I will be going with a 2.08/1.6 valve setup. Hopefully that clears things up

 

[QUOTE=ArcticZ28]I'm not confused. I understood you when you pointed out that #7 was not the bottom left plug. If you sit in the drivers seat #7 would be bottom left in your picture. Read my comments regarding the plugs, my comments were qualified.
Since you are going with 2.08's, I stand by my opinion that unshrouding would be good and I agree that the work will really wake up your car.

 

Allllrighty, I have obviously read your comments, was just trying to clear up confusion as I am looking at the plugs right now and #7 doesn't look white as compared to others. It is probably something in the pics. I'm not sure where you got the feeling I was trying to make your statements seem unqualified. At any rate, back on to the catch can decision... would breathers work just as well as a catch can? I'm not looking to skimp on the setup but am also not looking to spend bank on it. Just want something that would clear up this problem.

 

If its a street car, i would not do breathers. I recently went back to a PCV setup to extend oil life. You can get catch cans for fairly cheap off of ebay. Or you can use a cambell hausfield air somepressor oil seperator for like 14 bucks from autozone. Im using that and its working pretty well. I do have to drain it fairly often though, so im looking into an ls6 pcv mod to cut down.

 

Well, I have the LS6 pcv, so would using a catch can instead work out better for me considering the extra money it would cost, or would it not be worth it.

 

at 3k intervals, i dont see how using a pcv can extend oil life. i prefer to use fresh oil, im not out to get the max milage out of oil. id rather spend money on fresh oil sooner than expected than an engine rebuild, but im just paranoid.
i vote for a breather, its cheap and easy.

 

I am about to swap to breathers as well. My home made can fills more quickly than I like. At 3K mile intervals, I get about 4 oz. of goo.

Brandon

 

put a catch can on it, .040 gaskets and mill to 11.2-11.5:1 Jon would be the best easy way to do it. Those pistons dont come out of the hole much do they.

Hey cheapskate, buy a new set of 15 dollar plugs and put them in there, the TR6s are the way to go tis why I put them in there. Ive run them on bolton cars with no power loss, so I wouldnt be scared.

You are going to smell some kind of fumes with a 240 duration cam, irrelevant of the air fuel. Obviously its not that rich or the plugs would be sooted up more. Looks more like oil consumption thananything with the greying of the porcelien.