Here I go again the second time around. First built motor on last integra cracked two sleeves at evans tuning back in may of 2010. Now I want to re do it again with another integra I got. Question is what would be better a stock micropolished b18b crank or a scat 89mm crank? Goal horsepower is 750whp with roughly 400ft lbs tq on a t3/t67 journal bearing turbo with benson 84mm sleeves. Setup is as follows

Cp 9:1/1 compression pistons with teflon coated skirts an ceramic coated domes
Manley b18b turbo tuff connecting rods
Acl race rod an main bearings
Arp main an head studs
Type r oil an water pumps
Moroso 5.5qt oil pan
Oem b18c1 block with Benson 84mm sleeves
Honda oem timing belt
New water pipe/thermostate/water neck
New knock/oil pressure switch sensors

Head b18c5
Portflow pnp
3 angle valve job
Supertech stainless steel valves
Supertech titanium valvesprings/retainers
New valve guides,valve seals,keepers
Bdl cam cap
Jun stage 3 cams or skunk2 pro 1s
Aem tru time cam gears
B18c1 valve cover
All new sensors
70mm ericks racing throttle body
Edelbrock intake manifold
Precision 1600cc fuel injectors
Aeromotive firewall mounted fpr
Golden eagle fuel rail
Hondata intake manifold gasket
B18c5 distributor with msd cap/rotor an external blaster coil
Ngk idrium spark plugs

Turbo setup
Neukion ramshorn manifold ceramic coated black
Precision ball bearing t3/t67 turbocharger
3inch custom downpipe with dumptube
Tial 60mm external wastegate
2.5inch custom ceramic coated aluminium intercooler piping
Spoolin performace type 1 intercooler
Greaddy type s blow off valve

Engine management
Obd1 p28 socketed with hondata s300 version 2
Obd1-obd2b conversion harness
Wideband don't know which one yet
Autometer mechanical boost,oil temp,oil pressure gauges
Turbo xs dual stage manual boost controller

Welll there's my whole setup. Most of the parts are left over from my last build. Just need an answer about the crank aswell if the crankshaft spocket from a gsr will work on an ls crank. Thanks in advance.

 

stock crank is already 89mm... no need for a scat crank. stock crank will handle almost anything

 

Are stock honda crankshafts forged? Also are the crankshaft spockets the same between ls,gsr,itr.

 

Yep and Yep.

 

Thanks mac. Ill be getting ahold of you about a top mount manifold within the next couple of months.

 

other ppl may chime in but i have never seen aftermarket cranks holdup under alot of power in a honda

 

must you use a topmount?