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Tomei Osgiken Rb30

tribex

By tribex,
in Engines & Forced Induction

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rb30dett Rising Star

rb30dett

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Definitely the twin greddy t78 will not be very functional at the 9krpm redline they suggested.

I've driven similar setup. The Twin T618Zs hit full boost at 4.5-5krpm. Single T04Z hits full boost around 5.5-6krpm.Twin TD06s hit full boost at around 6-6.5krpm.

I am not sure when Willall's drag car hit full boost with their T67s. If I have to bet, the T78 must be getting full boost in the 8krpm....way too laggy.

BTW what cams are they using on this setup and what is the asking price?

nope, your wrong there, on an rb30 the td06`s are on at 4500-5000rpm @ 20psi. Willall`s t67`s seem to be around 5500-6000 as they dont rev theres any higher than 9-9.5k and I have seen them on full boost, he has a very good power band.

9krpm Mentor

9krpm

Posted
Posted
nope, your wrong there, on an rb30 the td06`s are on at 4500-5000rpm @ 20psi. Willall`s t67`s seem to be around 5500-6000 as they dont rev theres any higher than 9-9.5k and I have seen them on full boost, he has a very good power band.

I dont think so :banana: I've driven all of these cars except the T67. The one with TD06 had nismo tacho, which reads 10% higher than OEM so if I am off it would only be around that. The T618Zs hit full boost at 4-4.5krpm on an oem tacho. There is no way the td06 get full boost/torque at the same time. It certainly feels different as well. All of these cars have OS 2996cc engine with drag race cams (that's as much as I can tell you. If you like to know the spec, ask Willall) so it might be a bit later than what you would expect for street or circuit prep car.

tribex Enthusiast

tribex

Posted
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Posted
I dont think so :) I've driven all of these cars except the T67. The one with TD06 had nismo tacho, which reads 10% higher than OEM so if I am off it would only be around that. The T618Zs hit full boost at 4-4.5krpm on an oem tacho. There is no way the td06 get full boost/torque at the same time. It certainly feels different as well. All of these cars have OS 2996cc engine with drag race cams (that's as much as I can tell you. If you like to know the spec, ask Willall) so it might be a bit later than what you would expect for street or circuit prep car.

why is it that you never seem to see the rips rb30s or aussie built rb3os in the record books like os engines??

ps what are the t67 turbos rated at anyways?

  • 1 month later...
9krpm Mentor

9krpm

Posted
Posted

If you want an OS giken engine like that from an Aus workshop, the best workshop to call is Willall racing. They sold a few engines to GTR enthusiasts in the past. I am sure they can build you one if you have a healthy cheque book. There isn't much drag racing action from them for the past few years because the drag strip in SA has been closed. I am sure you can get more info on the T67 turbo as well. Willall racing owner has been using those turbo for a long time.

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