Snoop
New member
I'm finally in need of some fresh injectors. I currently have 180/75s paired with my 68mm. I do some heavy towing periodically. Heat is very manageable. What size injectors would best fit my needs?
Injectors with 68 for Towing
- Thread starter Snoop
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04stroker
New member
Why are you wanting to change if heat is manageable? Want more power? Wanting to make heat more manageable?
Snoop
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Always want more power. On a big hill with say 12k behind me, Egts won't ever get above 1300.
Obviously I know I can run 175/75s and won't really notice any difference. Can I safely go bigger?
Obviously I know I can run 175/75s and won't really notice any difference. Can I safely go bigger?
PTSUPERD
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Who's 68?
04stroker
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If you have no problem managing 180's I
Would say you could safely go to 190's don't know about much bigger than that just have to try it. I used to tow with 190/50 and a 65mm Vgt it would get kind of warm going up steep grades with 12k+ lbs but I could deal with it wasn't to hard to manage just keep an eye on things. But you also got more air than I had on mine.
Would say you could safely go to 190's don't know about much bigger than that just have to try it. I used to tow with 190/50 and a 65mm Vgt it would get kind of warm going up steep grades with 12k+ lbs but I could deal with it wasn't to hard to manage just keep an eye on things. But you also got more air than I had on mine.
04stroker
New member
RCD if sig is up to date.
Snoop
New member
RCD
How much money do you have??? LOL
You are getting close to the maximum amount that IMO that charger can safely tow. Pulling fuel will always help but it usually comes down to the nozzle size that will limit things. You already have a 75% nozzle which is pretty big for towing. If you go up to 190s then I doubt you will see any noticeable difference. 205/75 would probably provide more of a difference but now you will be pushing the limits of your stock HPOP.
It would be a lot of money... but Andy Warren is running one of our KC 68mm turbos with 205/30 and twin HPOP and he loves it. Small nozzles help to keep temps down. The Twin pumps help to dump all the fuel. On a race tune there is plenty of fuel. On a tow tune temps stay in check really well.
Just food for thought.
You are getting close to the maximum amount that IMO that charger can safely tow. Pulling fuel will always help but it usually comes down to the nozzle size that will limit things. You already have a 75% nozzle which is pretty big for towing. If you go up to 190s then I doubt you will see any noticeable difference. 205/75 would probably provide more of a difference but now you will be pushing the limits of your stock HPOP.
It would be a lot of money... but Andy Warren is running one of our KC 68mm turbos with 205/30 and twin HPOP and he loves it. Small nozzles help to keep temps down. The Twin pumps help to dump all the fuel. On a race tune there is plenty of fuel. On a tow tune temps stay in check really well.
Just food for thought.
Breaking Habits
New member
Stick with the 180's. You wont want to tow with anything bigger than that. I imagine yours runs pretty damn clean, I know Garrett's truck runs pretty good with 68/175's.
Bigger may push you past where you need to be reliability wise
Bigger may push you past where you need to be reliability wise
PTSUPERD
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Good advice. I think the 180/75s are a good match for the RCD 68.
Snoop
New member
Sweet I'll stick with the 175 range.
Does upgrading my hpop improve injector reliability at this size?
Does upgrading my hpop improve injector reliability at this size?
Laybourn74
New member
What size did you end up going with?
