I picked up a 33 GTS25T with a blown motor (ringlands) for cheap.
After driving a 5.7L NA CHEV the skyline motors don't seem to be the same down low. (not enough low down torque) yes I'm aware that the "25" has VVT but it's not quite the same.
For those who don't know much about RB30's, here's some back ground. RB30E's & RB30ET's (single cam) were sold In Holden VL commodores and R31 Skylines in Australia and new Zealand, I'm not sure where else in the world they were sold. Maybe something can add to this..
The RB30ET is certainly no slacker, their are cars with these motors running high 8's consistantly on street tyres. The design of the bottom end is very similar to other RB's.
Pic of an RB30E, it makes a whopping 114kw in stock form :loser:
My plan is to use the RB30E bottom end, bolt the 25 head on, fit a decent size turbo and numerous go fast bits. The big advantage from the extra 500cc's is not large increases in hp but more so in torque. This car is a daily driver so having huge amounts of hp and lots of lag is not ideal. A perfect combination of torque and hp is what I'm aiming to achieve. Both 25 and 26 heads have been used before on the 3L block successfully for street, strip and the track, particularly here in Oz.
I'll keep you guys updated with pics and info and welcome any suggestions and questions along the way. :thumbup:
Cheers,
Alf

After driving a 5.7L NA CHEV the skyline motors don't seem to be the same down low. (not enough low down torque) yes I'm aware that the "25" has VVT but it's not quite the same.
For those who don't know much about RB30's, here's some back ground. RB30E's & RB30ET's (single cam) were sold In Holden VL commodores and R31 Skylines in Australia and new Zealand, I'm not sure where else in the world they were sold. Maybe something can add to this..
The RB30ET is certainly no slacker, their are cars with these motors running high 8's consistantly on street tyres. The design of the bottom end is very similar to other RB's.
Pic of an RB30E, it makes a whopping 114kw in stock form :loser:
My plan is to use the RB30E bottom end, bolt the 25 head on, fit a decent size turbo and numerous go fast bits. The big advantage from the extra 500cc's is not large increases in hp but more so in torque. This car is a daily driver so having huge amounts of hp and lots of lag is not ideal. A perfect combination of torque and hp is what I'm aiming to achieve. Both 25 and 26 heads have been used before on the 3L block successfully for street, strip and the track, particularly here in Oz.
I'll keep you guys updated with pics and info and welcome any suggestions and questions along the way. :thumbup:
Cheers,
Alf