Transmission Loss

[Tom_16v]

My valver is in for its 48K sevice at the moment, and after I was thinking about putting it on a rolling road to see what shes kicking out!

What kind of power @ the wheels should I be looking at (everything is standard) and what is the transmission loss, as I know my mates rolling road transmission loss is always wrong (both my brothers R5 GTT & Saxo VTS show 45+BHP loss, which I know is bullsh*t)

Cheers

Tom

 

[Nick Read]

Between 100 and 120 is about right. Sorry cant be more accurate than that but Renault wont say and every rolling road tells you something different!

 

[Tom_16v]

Ok then, Cheers Nick

 

[maciek]

any idea of why is that so Nick?

cause my valver (with full Supersprint xhaust only - no cat, stainless steel manifold) did 88 kW - 120 PS on wheels. on flywheel after DIN correction it said there was 131 PS@6124rpm??? just adding that im always under 8 sec, and 7 seconds is achievable... (adn low 15s 1/4miles)...

then...how on earth is this possible?

one more question: what rpms do you have, when driving in 4 gear@60mph?

cheers Maciej

 

[Nick Read]

Well trans loss is a big subject that causes all sorts of arguments! Glad you quoted 1/4 mile times cos theyre the only figures I trust. If youre running low 15s then youre probably packing around 150+ bhp, comparing it to a normal 16v.

Dont know what revs I have in 4th gear, Ill go and check. But I am running a Williams gearbox so it will be different anyway.