i am very close to buying a r + d dog box
only i have never heard of them
spoke to one of my rally mates and he said
quite a good box and rated it better than a ppg ???
can anyone give me any advise
will it last with 650hp motor on track only
thanks andy

 

AFAIK if its a rally box it wont be designed for anywhere near your power/torque figures.
Bare in mind on a rall car they run either a 32 or 34mm restrictor to limit power to approx 300bhp levels.

Before you buy i would get the spec and call R+D yourself

 

I would also check the gear ratios, as rally/ GrpN ratios are very short, especially if you have 650bhp, and torque to match.


For 650bhp I would be suggesting a 6 speed box, with up rated gear kit. PPG rate their kit to over 1000bhp !


Mark.

 

The bhp is limited to 300bhp but the torque figures are still up in the 600's

 

I'm sure you have got your Nm and lbft confused

600Nm is approx 443lbft. I would have thought this would be easy to exceed with no restrictor in place.

 

thanks for all the replies guys
quite helpfull
regards andy

 

BTW 600Nm plus is correct,even with a restrictor in