Outer Limits 4x4 Board

I stuffed my dyna gearbox today in my hilux. Do you think i should rebuild the dyna box or replace it with a r151? Will the r151 bolt in where the dyna box was? or is there another option witch would be stronger? My hilux runs lockers Q78swampers and a v6

Both are the same trans so it shouldn't be a problem.

rebuild the dyna, the rbox is not as strong

I got to ask if the Dyna box is the same as the G or the R where it bolts to the bell housing?

If not, rebuild the dyna box or consider how cheap the standard G is now and do a risk assessment on how often you will "blow" your gear box!

If it is the same as the R, you may find a cheap enough one. To rebuild any box at a shop with not getting mates rates is friggen heaps of money.

dow50r wrote:rebuild the dyna, the rbox is not as strong

Not so as they are the same trans internally, except for the different gear ratios. The Dyna ia also an R series, ie R452.

The only strength difference if you can call it that is the Dyna has a cast case whereas the R150/151 are alloy but with a bash plate this means zip.

would a r151 out of a 2002 HZJ 105 landcruiser fir or do you have to source one from a 4 runner

V6 will probably correct me here but I would think 4 Runners have either an R150F or a G52. Not R151.

The R150F should definately be strong enough, but I don,t know how low and hi selection would work out unless you put the chain driven transfer in.

Cheers

If i get a r150 from a hilux 3lt turbo diesal and mate it to the gear driven transfer case with a advanced adapters from marks 4x4 would this bolt into the same place as the dyna box? I would prefer this as the dyna box has a long gearshift throw ie changing from 1st to 2nd

mudbasher2 wrote:........ would this bolt into the same place as the dyna box? I would prefer this as the dyna box has a long gearshift throw ie changing from 1st to 2nd

Yep, straight bolt up as they are the same breed of trans and you would have the better internal shifter selector mechanism rather than the crap outside setup used on the Dyna.

Be aware the R150 has a 3.83 1st and the R151 has a 4.31 1st whereas your Dyna has a 5.14 so if you prefer the lower 1st then the R151 would be the closest.

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I think some confusion has arisen here because there are more than one type of gearbox series fitted to the Dyna. The smaller Dyna's run 'R' series boxes, the bigger Dynas run 'M' series boxes (this is a pretty good simplification anyway).

The R boxes should be all pretty close to interchangable apart from ratios and whether the housing can take a transfer. M series boxes are a Titan of a gearbox, and are pretty much not interchangable (It can be done, but alot of work).

could somebody please tell me which model 4 runners had the r151 becouse when i ring the wreakers and ask for a r151 out of a 4runner they dont know which models had that box in them. I know that all hiluxs with the 1kz had the r150 so do all 4runners with the 1kz have ther151?

G'day mate, can I ask how you stuffed the box? Is it a Marks item? I'm running one in my lux with a V6 and so far haven't had any dramas. Just wondering if you know what the cause might have been. Cheers, Chris.

ive been running the dyna box for about 4 years and it got a flogging(its a play car) the syncro on first and the thrust bearing let go and there was metal though the box, but in the end it was cheaper to rebuild the dana box then buy a r150 out of a hilux and i know its strong enough for a few more years. my v6 has a cam aftermarket ecu ect so it was probley a bit harder on the transmission