HYPO V8
The turbocharged holden 308 project


 
 

 

 

 

 

 

 

 

 

 

 

Motor

Crank: std (balanced)
Rods: VL GrpA (balanced)
Heads: VK black castings,VN black 1.9"&1.6" valves, 7/16 screw in studs, guide plates, yella terra roller rockers, 8005 dual springs+dampner, ported by flowcraft, kline guides, LPGas insert, Teflon seals
Cam: Crow solid 3500-6500 (P.N.: 5647, N/A grind), eaton solid lifters, chrommoly pushrods
Pistons: Hypatec Chevy 7.1:1 comp +0.030", molly rings
Manifold: Elderbrock performer(port matched), crossover welded up

Misc: hi volume oil pump, HiEnergy pan, powerbond race balancer, relocated alternator and added VK efi power stering pump setup, electronic distributor, coil reloacated inside heater intake box

ToDo: retard Distributor system propertional to boost(how, i dont know yet, mayb vacume advance with added spring backwards)

Turbo

Turbo: TV77 air research, compressor 72 lbs/min (rough size of garret's T-66), exhaust 1.00 A/R
Extractors: custom steam pipe, 1 ¼ primary into 1 ½
Downdpipe: custom, machined vband flange to 3in into y dual 2in then back to 3in
Boost control: 32mm wastgate with a 7psi spring and some $100 special adjuster
Oil lines: custom steel piping
Exhaust: 3in lucky super turbo muffler into 3in cheepo resonator(EPA'd)

Misc: 5/8id steel oil drain

ToDo: plan to install 15 psi spring after water injection installation/Intercooler, expected 18 psi total, remove resonator

Induction

Carby: 3 inch turbo outlet to mixer,runing impco 425 for now, throttle shaft 2ndaries oring'ed, primry's have boost air drilled into them to prevent LPG exiting
Airfilter: KnN (PN: RU-3220) 5 in flange, 6.5in round, 10in long, mounted under drivers side wheel arch
BOV: Monza type III blow off valve

Misc: Balance pipe between intake and converter(required in blo-tho), mixer idel circute presure balanced

ToDo: Gas research mixer, dual converter, dual lines and locks, Water injection/Intercooler

Driveline

Flywheel std(balanced/lightened), Clutch10in heavy duty, M21 4 speed, Tailshaft std, Diff VL Turbo 3.45:1, 4wheel disk

Misc: custome gbox linkages to shorten shifter movement

ToDo: replace clutch setup, flywheel and presure plate, find stronger box, hydrolic clutch setup, 1 peace tailshaft, upgrade brakes

Body

VH SLX commodore, VK HDT spoiler kit minus rear aprin, VK lights, VK mirrors, 4 point role cage, A9X bonnet scoop, LTW rims(cheep shit chromed), 235*45*17 rubber, sunroof(YUK), coil reloacated inside heater intake box

ToDO: piss the sunroof off somehow and respray, re tint windows

Interior

Tacho, Boost Guage, Air/Fuel meter, Sony mp3 player, clarion 3way 6*9in rear, 3way 4in front, trim standard

ToDo: Retrim seats, repair dash, new gearstik boot

 

 

 

page contents cannot be used without explicit consent from David Smyth aka hypo_v8
any questions etc, you can email me at [email protected] use turbo in subject