91.5 hy35 and pump tweaking question
#1
91.5 hy35 and pump tweaking question
So I have 50 horse injectors with a dealer insalled pump I got under recall I put the injectors in before the pump. Before the new pump my egt got up there when towing .I told the mechanic at the dealer that I had bigger nozzles and he set the pump so my egt is a lot better however they still get hot on occation. Now for the question I have an hy35 turbo that was given to me nothing wrong with it but my brother didn't need it after an upgrade will this turbo lower my egt or at least keep thing manageble if I turn the pump up? Will it provide any extra power without any pump mods? If I throw more fuel in do I need to bump timing as well?
#2
Give and take. Though the HY has a slightly larger compressor side, it has a smaller turbine side. You can (I think) bolt the compressor and center section to the H1C exhaust housing. I know you can with an HX, not 100% sure about the HY. A common mistake is using "go fast" parts in a "work hard" truck. That is why your EGT climbs under a sustained load. Depending on the specs of your "50 horse" injectors, they can be used for towing if supported properly.
#4
#5
If you are going to be giving your truck a steady diet of hard work, the 18.5 would be a better choice. Though you will have a slight lag it will get rid of the heat a little better than the faster spooling 16. My rule for a work truck is don't create heat in the first place. High boost levels "preheat" the air before it reaches the engine. Running boost levels much over 30psi and that is what you are doing. An intercooler can only do so much. If you are supplying more fuel than the incoming air can efficiently burn (black smoke), you are adding more heat. Turbo exhaust housing and exhaust restrictions can hold heat in. All these things add up to higher EGT. And in a working truck, you have to hold that power for an indefinite time.
Solutions? High flow air filtration. High CFM turbo. Larger intercooler. Water/methanol injection. Large and/or waste gated turbine housing. Larger diameter exhaust. As for injectors, keep it small. I also recommend 6 or 7 hole injectors. Why? They keep the power at the low end of the RPM range were you do the hardest work. 6X0.011 or 7X0.012 work well for towing power and EGT control.
Solutions? High flow air filtration. High CFM turbo. Larger intercooler. Water/methanol injection. Large and/or waste gated turbine housing. Larger diameter exhaust. As for injectors, keep it small. I also recommend 6 or 7 hole injectors. Why? They keep the power at the low end of the RPM range were you do the hardest work. 6X0.011 or 7X0.012 work well for towing power and EGT control.
#7
I would think the HY35 should spool quick and provide a lot of boost. The trick will be keeping the fuelling conservative so it doesn't get too hot.
With my setup, essentially marine 370 injectors and 12cm housing, i have never been able to get over 1200*. Usually cant get more than 1000* out of it. I have more tuning to do, but that's where mine's at for now.
With my setup, essentially marine 370 injectors and 12cm housing, i have never been able to get over 1200*. Usually cant get more than 1000* out of it. I have more tuning to do, but that's where mine's at for now.