What I will say is I have a 1hdt with quite a lot of fuel turned into it. I don’t roll coal but I do have the dark puff mudgudgeon is talking about. I also smoke white at high altitude and in cold temps until it warms up. I have never been able to solve the white smoke even with new injectors...
Being that it’s sluggish out of 1st I would doubt it’s over fueled at and off idle. The white smoke you are seeing could be and issue of injection timing at that altitude. If you decrease fuel with the pin or the fuel screw it will only get more sluggish. I would look into checking my timing...
I played with the matchbot quite a bit for about a year before I bought a borg warner turbo. You will never be able to get extremely close to real world drivability unless you have some way to figure out volumetric efficiency and brake specific fuel consumption and many other key inputs it has...
Back again!!! The day has finally came and now I cant wait any longer to pull my head off the old 12V. I have some leaking valve stem seals that need replacing if I am to keep the old girl on the road. Tossing around the idea of buying a new complete head or a new casting doing some port work...
Yea I am using a custom divided manifold so that I can gain the benefits of the twin scroll housing. I don't believe there would be any benefits to running a twin scroll housing and not using a true divided manifold.
I think its more acceptable the other way around though... i.e. there would be...
The 6758 is very similar it would be a better match for someone wanting more response lower in the rev range. I'm really not sure how much it was worth going twin scroll. On paper of course it has some benefits. The main issue I have with the 7163 is I just don't have the fuel to match it yet. I...
Its still going strong. Just know its an expensive option. If you end up wanting to get a rear housing that's twin scroll you also need to get a manifold made to fit it. Sometimes I wish I would have went the EFR 6758 which is a little smaller than the 7163. The 7163 really doesn't do much...
I know what you mean. Yea I leave the pin in and the diaphragm but I remove the spring. I leave the boost reference line on and it just shoves the pin all the way down or you can just push it down before reinstalling the the cover.
Make sense?
I guess by removing the pin I mainly mean I remove...
This is a solid info. @KiwiDingo always tried to get me to tune like this by tuning the main fuel screw first with no compensator in to get max safe EGT under WOT. Then tune my compensator as more of a fuel removal method rather than thinking of it as adding fuel. I have still yet to try this...
I would be less concerned about the profile and more concerned about the lumpy grind. The profile isn’t so much the problem, you can alter pin travel with shims to limit peak boost fueling for EGT and you can also effect pin travel with the star wheel for better low down response. What I mean...
Which turbo from G Turbo are you running? If its the green wheel then you will always be plagued with high EGT's if the fuel is wound up.
s*** grind though either way. You could try smoothing it out a bit as someone else mentioned it could be getting hung up. Could also try increasing spring...
I believe you are correct about being past the capability of the pump. All my pins will allow max travel from the pump. Some of them don’t even touch the follower pin at the deepest side of the ramp. The pump was rebuilt a year ago and injectors as well. I get plenty of fuel on the bottom end...
I should have been more descriptive in the post. I have AFR gauge and I also have multiple pins. I can obtain max travel on any of the pins avoiding fuel cut. I have the pump setup to its near limit I suppose in terms of the main fuel screw but im more interested in the fine tuning of where and...
Howdy Gents! At this point I'm no stranger to fiddling with these pumps, however recently in the last year I have went to a slightly larger turbo than most do and have gotten the bug to find a sweet spot for fueling. It runs well as it is but my EGTs are pretty cold most of the time 450-550F pre...