Sxynerd

What's the Difference in Drivetrain loss for an IRS system compared to a SRA?


I'll should make a sticky with everything I learn for my 30 threads on IRS!

Sxynerd

Hey Loooooosers, answer the question! LOL.

hpwrestler220

ummm. ALLL OF IT. you lose all the power you had.. you now have 0hp.. sucksss =/

Sxynerd

Meany!

MineralGrey

I might be wrong but wouldn't it be 3% lower because it has the aluminum d/s and isn't the power to the wheels calculated by the linear force through the drive train?

cliffyk

IRS (as in retrofit) does not necessarily mean aluminum driveshaft, however you raise an interesting point--and that could be that Ford used the aluminum d/s to offset the inherent (and variable) losses in the IRS' CV joints.

Could be a wash, could be a net loss or gain--I've never seen any serious evaluations. Ford certainly has them but I doubt they'll be sharing anytime soon...

Sxynerd

Basically I want to know what I'm going to loose when I install my IRS.

cliffyk

I understand, the answer is that if you are road-racing don't worry about it, power loss to the wheels will be offset by much improved handling--and if you are a straight-liner than why are you installing an IRS?

Stevecooper

If you are going to trade your solid axle for the IRS with out spending much cash then its worth it. Otherwise get a PHB / TQ arm setup from Griggs or MM.

Sxynerd

I paid $1,100 for 2004 IRS (10k miles) with brand new Bassani exhaust. I do do some straight line stuff, mostly from a roll because the F-bodies in my area are all gay. Hp wise I'll be in the mid 500's so the loss would be unnoticeable, mostly. I'll be doing all the bushings and braces as well.

Since I'm a convertible I wont be doing any track racing anyway. This was mostly a comfort decision. I drive my car way too much for it to ride like a truck anymore. lol