Roel

Hello,

I was wondering who's running 500 bhp+ with ppg's straight cut synchro's 5mt.
I know ppg's are rated at 450 bhp.

Could this work for my setup? forged 2.5 and gt35r .82, looking for 500 bhp.

Thanks

Greetz.

stevebt

iTrader: (8)

They are the normal gearbox of choice for most older cars with 500bhp plus

I have your setup but with a 6 speed gearbox

Pete

Sorry for off topic regarding box

Wouldn,t a GT30 be better suited for 500bhp??

stevebt

iTrader: (8)

No the GT35r is the better turbo

Pete

Really Steve?? for 500??

My GT30 on my cossie was a great turbo, 35s are slightly lagier again and imo more suited for a 550bhp turbo..

Playsatan

iTrader: (2)

Both turbo's will make 500. The better one is the one that suits your need best i.e. spool Vs power.

For the record yes I have 500+ and a straight cut ppg box. The noise isn't too bad, my main gripe with is it the slack in the drivetrain. Makes on/off throttle changes very jerky.

wrx450

I had the synchro version, ultimately broke third with about 350whp. Now that 440whp I have the PPG straight cut 'dog' gearset rather than fixing the synchro set.

DJ_Jon

iTrader: (7)

Is that because its straight cut? I'm looking at building a helical cut box, would it be the same?

Roel

Thanks for the info guys

Correct me if I'm wrong, but it should hold up right? But I guess it's not reliable though...
Here in Holland almost all the fast guys have 6 speed's, but I don't like the gearratio's.

Greetz!

Shaun

Pete,
Steve's is fine..... especially if you want to lose out on lowend grunt as part of your remit. Anyway, Steve wouldn't know about 500+bhp since his turbo has never reached that pinnacle yet.

Roel,
I have heard of PPG's busting below 500bhp, but I am not sure of the circumstances. However, it is the torque that is the killer.