Maximising Low End Torque

[Duncan]

OK, for something a little different today.

I need to maximise the low end torque on an rb25. standard turbo, PFC, electric boost controller, full 3" zorst.

What can I do?

[The Mafia]

add timing in that area.

Its easy to do, just make sure it isn't knocking.

[sh@un]

how serious do you want to get with it drunkan?

you could always get adjustable cam gears and set the cam timing and lobe centers up to maximise the bottom end cylinder filling, and to hell with revability

(p.s- this is for the Volvo Stag, innit?)

[Duncan]

yeah its for the volvo. and the steep driveway. with the 2tonne trailer on the back.

OK lots of timing but will need to be very careful to load it up heaps on the dyno to check.

Will probably chuck a cam gear on the exhaust side too to give us the best chance to adjust.

I should have said I am happy to trade off top end power (although not unecessarily, I'm still human afterall)

[Guilt-Toy]

dont go more then 38 deg timing. It causes the cyl's to heat up and when you hit it the engine will knock

[Duncan]

hmm

obviously not a common problem on here

[Simon-S14]

put a 3L bottom end in

its going to be hard to do much else other then add timing + cam gears, and since your putting a large load on it you have to make sure it isnt going to ping to death.

[wolverine]

the stagea is a big lump to get off the line.

as stated previously for a S1 stagea exh cams gear dialed correctly plus as much timing as you can get stuffed in down low when the powerfc is sorted (if it isn't already).

[Duncan]

lol or maybe just encourage it to ping to death so i have to put the 3l bottom end in. I've started getting the bits for that but want to run it as best i can in the meantime (there are a couple of race motors in the queue in front of the tow car's one)

ahh well will start with the cam gear and tune.

[wolverine]

a pair of hamsters running in a cage linked to the driveshaft might be worth a go.