Hard Blok?

[jdmser]

I have been milling around the idea of doing a half fill in my RB24(bore RB20 not sohc) block. Is there anybody here that is running a filled block and what are water temps like? Can it be driven on the street?

Edited January 8, 2009 by jdmser

[2rismo]

I 9/10ths filled my RB25DET block and the water temp is fine. I run two good quality thermo fans and had my standard radiator reconditioned (unblocked). Most of the heat is in the top inch or so of the block anyway so half-filling yours should do bugger all to water temps provided your cooling system is operating correctly.

[R.I.P.S NZ]

I 9/10ths filled my RB25DET block and the water temp is fine. I run two good quality thermo fans and had my standard radiator reconditioned (unblocked). Most of the heat is in the top inch or so of the block anyway so half-filling yours should do bugger all to water temps provided your cooling system is operating correctly.

How did you keep the area around the water pump clear if you filled so high?

Rob

[GTR1993]

Same question as above! i dont think he meant 9/10 th though.

[Dearlove]

does doing this ad much weight, what are the disadvantage/advantages of doing this?

[jas/slo32]

water is weight so weight change should be minimal

rb26/30 approx 3/4 grout filled with electric water pump ,pwr radidtor & no thermostat ran @ 84 deg c while cruising before & after grout fill

[Jet 20]

what are the reasons/advantages from this??

very interesting.

[VB-]

think it adds rigidity to the block?

[R31Nismoid]

just strength.

not for a backyard builder to attempt unless you are one that knows what you're doing.

Id imagine both my motors were filled somewhat too, kinda a given really if you're doing a build, or rather paying for one

[Swiper the Fox]

We do it...no problem with temps.

[GTR1993]

Dirt, do you do this to street and track blocks? Im thinking of doing it to my street 26 to stop that semi common crack happening.

[R31Nismoid]

mine is just a streeter, as are many many others.

done well, it'll help prevent the split/crack around the water galleries if you like to launch a lot

[2rismo]

How did you keep the area around the water pump clear if you filled so high?

Rob

We just put a tiny pulley on the front of the pump and spin it really hard!

LOL!

I may have been exaggerating a little by saying it was 9/10's full of grout It is above the water feed for the turbo though (had to take feed and return from the other side of the motor.