Join Date: Jan 2010
Location: Hardin Illinois
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Turbo Setup For Towing/Twins
Hello Everyone, I need some help here. A few days ago my hx35 decided it had enough and the compressor started rubbing the inside of the cover. So, i went and had a very reputable turbo supplier and engine builder put together what they thought would be a great turbo for me. Its not working so great. My egt's are up and it is laggy as hell... The hx35 would light early and do a good job for the towing i do. They thought stepping up the compressor size and turbine housing size would drop my egt's but its went the opposite way.
They basically built me a hx35 with a 60mm compressor, stock turbine wheel and 14cm turbine housing. With the stock hx35 with a 12cm housing i could tow my 12k 5th wheel and keep egt around 900-1000 on the flats and 1200 on a pretty good grade as long as i kept it in drive and the hill wasnt too long. Now i will hit 1200 before i get to 45mph and that is with a pretty light foot. Once i finally get up to speed i can barely keep it below 1100 on flat ground and pulling a hill is a nightmare.
I am going to build my twin setup (? / HT3B) as soon as winter hits but until then i would like to use the truck and camper a few more times. I hate to just put a stock hx35 back on if there is something a can get that would perform better both as a single and in a compound setup...
Would a 12cm housing help me? I am thinking the 14cm is causing the turbo to not light early enough and that is whats getting my egts out of hand.
Any advise on turbo sizing for a really great compound setup that can tow would be greatly appreciated.
2002 F-350-5x.013's, 4k gsk, 60lb valve springs, 191 dv's, 18.2 deg timing, 14mm studs, Fire Rings, Airdog II, hx35 (hx35/ht3b coming soon) 4" exh