Coke Car running lean...
10-13-2015, 12:50 PM
#196
Rennlist Member
Nope. I've been traveling for work the past couple weeks. Where I left it last, I had installed a permanent WBO2, and the stock LH chip. WOT AFRs were in the mid 11s, so it's safe.
The only things I have not touched are the injectors and the front fuel damper. The damper is the only thing I can reasonably think of that would be a bottleneck as the fuel comes in through that and then distributes to the fuel rails from there.
I probably won't do anything further this year unless I can get my hands on a spare damper (cheaply).
I'm on a waitlist for a track day this Thursday, but then it will likely be going away for the long winter nap.
The only things I have not touched are the injectors and the front fuel damper. The damper is the only thing I can reasonably think of that would be a bottleneck as the fuel comes in through that and then distributes to the fuel rails from there.
I probably won't do anything further this year unless I can get my hands on a spare damper (cheaply).
I'm on a waitlist for a track day this Thursday, but then it will likely be going away for the long winter nap.
your afrs are way rich right now.. WAY rich... i dont think that if you put the stock fuel regulator, that you could raise the AFR to anything greater than the 12s, meaning something else is going on ... after all, the difference between the stock and s4 regulator is only about 10psi? anyway, that would be an interesting experiment... that way , it could be the chip that is causing the aftermarket chip that is causing the lean AFRs remember you are seeing AFRs go from 11 to 16 with a change of the chips... that aint fuel pressure changes that are possible with the fuel regulator.
thats my bet... the dampers are not the issue.
12-04-2015, 03:58 PM
#197
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yep, saw the ad..... that's going to be a problem. there is enough force at 120mph to probably cause a major problem,and you dont want a piece of aluminum under a tire on a straightaway in the braking zone
put a couple of cables at least, if not 3, for when you get to speeds above 120mph.
here is what happens:
splitter failure - YouTube
put a couple of cables at least, if not 3, for when you get to speeds above 120mph.
here is what happens:
splitter failure - YouTube
Mark,
I just need to clarify that video in YOUR post is your idea of a splitter, not the one I sell on my website.
That cobbled up piece of crap you tied up under your car in that video should in no way be compared to a 1/8 inch piece of 6061 sheet of aluminum that is bolted and bracketed more than 5 times in the front and along the back side to the lower radiator mount. You have never even seen it in person or bolted to the car but you can say he will have problems with it and insinuate it will put him in a dangerous situation. That splitter is on my track car as well as my wifes and she has taken it to 110 mph and mine to 135-140 at Watkins Glen with no issues, and it laaughs at curbs that it rides ove in the supermarket.
This is MY video of said splitter at Watkins Glenn and the camera is mounted on the splitter
Last edited by OBehave2.0; 12-04-2015 at 04:00 PM. Reason: ad my video
12-04-2015, 07:20 PM
#198
Rennlist Member
The video that i posted clearly looks a the forces in that area of the splitter. once its supported, there are no issues with mine either, even being only layers of 1/16" aluminum sheet. The point is, there is a force, easy to multiply out, of being around .36psi at speeds at about 160mph. Take the square footage of the front area and see if there is enough support for it... looks like from your video, that there is.
I now use the material of the fenders for my current splitter, which also needs to be supported. I dont know your bolting pattern or what the bolts are going into, but its short enough to not cause an issue, as the flimsy version didnt until i lengthened it out to about 8". this one being about 6" , still of 1/8 aluminum fender material (or maybe slightly thinner) , requires support . not because of the attachment , but because of the material itself. at 3-4" as yours is, it shouldnt be an issue
if you have it mounted to something other than the air dam mounts, that is solid, it should work. you extend it to 6-8" and you might have issues that i was referring to, not do to the mounts, but the ability for the air pressure to bend the splitter at the attachment point.
I now use the material of the fenders for my current splitter, which also needs to be supported. I dont know your bolting pattern or what the bolts are going into, but its short enough to not cause an issue, as the flimsy version didnt until i lengthened it out to about 8". this one being about 6" , still of 1/8 aluminum fender material (or maybe slightly thinner) , requires support . not because of the attachment , but because of the material itself. at 3-4" as yours is, it shouldnt be an issue
if you have it mounted to something other than the air dam mounts, that is solid, it should work. you extend it to 6-8" and you might have issues that i was referring to, not do to the mounts, but the ability for the air pressure to bend the splitter at the attachment point.
Mark,
I just need to clarify that video in YOUR post is your idea of a splitter, not the one I sell on my website.
That cobbled up piece of crap you tied up under your car in that video should in no way be compared to a 1/8 inch piece of 6061 sheet of aluminum that is bolted and bracketed more than 5 times in the front and along the back side to the lower radiator mount. You have never even seen it in person or bolted to the car but you can say he will have problems with it and insinuate it will put him in a dangerous situation. That splitter is on my track car as well as my wifes and she has taken it to 110 mph and mine to 135-140 at Watkins Glen with no issues, and it laaughs at curbs that it rides ove in the supermarket.
This is MY video of said splitter at Watkins Glenn and the camera is mounted on the splitter
Supercharged 928 Watkins Glen 2012 - YouTube
I just need to clarify that video in YOUR post is your idea of a splitter, not the one I sell on my website.
That cobbled up piece of crap you tied up under your car in that video should in no way be compared to a 1/8 inch piece of 6061 sheet of aluminum that is bolted and bracketed more than 5 times in the front and along the back side to the lower radiator mount. You have never even seen it in person or bolted to the car but you can say he will have problems with it and insinuate it will put him in a dangerous situation. That splitter is on my track car as well as my wifes and she has taken it to 110 mph and mine to 135-140 at Watkins Glen with no issues, and it laaughs at curbs that it rides ove in the supermarket.
This is MY video of said splitter at Watkins Glenn and the camera is mounted on the splitter
Supercharged 928 Watkins Glen 2012 - YouTube
