new twin setup for my dragboat
09-22-2013, 02:56 PM
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new twin setup for my dragboat Ok had a nice time with the single s480 setup i built for my 5.3 powered 16ft tunnel jetboat.it turns my jetpump to 6700 on pumpgas and meth injection.wanna step up to twins to lower backpressure alot and make the spool later than it does now.im lookn at the ss works up and forward headers, turning those backwards into some 65-70mm t4 turbos with 60mm gates on each header.the s480 setup at 18lbs shldve been making 850+ but i wanna twin setup that can handle 1200hp without much backpressure and spool real fast.my pump loads hard around 4k then the s480 wld begin building boost to 6700 @ 18lbs.lookn to turn 7200 on 18lbs from a twin deal.a cam change will take place as well by respected dragboat cam builder who knows ls turbo cams as well.any suggestions on a pair of twins that are cheap? Ebay turbo recommendations welcome along with name brand sets that are cheao and will gtr done.appreciate is guys the single deal pushes us 108 a few hundred more rpms will put us where we wanna be with the boat.
09-22-2013, 04:11 PM
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Im bored and have the winter to do it lol ive already sold my single turbo setup and now wanna go twins.lookn for a pair for 700 a set or less that spool around 4200-4500 up to 20lbs at say 7200rpms on the 5.3(its gtn forged pistons/rods/valves/matching cam to twin setup and current jetpump setup). Any suggestions????
09-22-2013, 05:28 PM
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Any of the offshore gt45's that hold up have a small nuff turbine to spool real fast in a jetboat? I see some that are marked as t66's and gt45's that have a nice compressor size and fairly s turbine.im sure gtn a map on em is impossible lol
09-22-2013, 09:24 PM
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Thinkn bout the on3 70mm turbs.this thing may be on methanol at some point, are the turbines big nuff for a 5.3 To turn 7200 on 18lbs and keep a fairly nice 1:1 ratio using some long tube headers?
