Auto Performance

[Nizmo]

Can some of you with autos please tell me what you've done - or recommend doing to get the most power out of them

I need ideas and inspiration not to mention im really curious as to what kind of power you are getting out of your autos hehe im sick of the manual guys teasing me - something needs to be done

Cheers

Lauren

[rev210]

lauren,

to get more power is the same as a manual. Having said that you get slightly less power at the wheels with an auto as it chews a bit more power out of the driveline.

One of the good things a bout an auto is the fact that you can whack a high stall in them. Bad for your fuel economy but great for a mean launch. Most auto places can rebuild the torque converter in smaller diameter to increase the stall speed. Modified stock converters can yeild an extra 800rpm or so, whilst a custom unit can be set anywhere you like. I'm not sure what the auto's are like valve body wise but a good auto rebuilder can usually sharpen up the 1st to 2nd shift with a bit of a fiddle. Nothing like 'banging' into each gear and chirping the wheels.

On the stock turbo I'd say a 2800rpm stall would work very well. It would wipe alot of smiles off the manual boys faces very quickly.

I'm getting the volvo's turbo350 box rebuilt on wednesday with a mild stall and a valve body mod, I'll ask if they have done any jap stuff if you like.

[memphis]

lauren, how did your auto go on the dyno day? I got 183hp .

[Nizmo]

i didnt put her on - didnt have the courage - didnt have $25 on me at the time haha i would rather not know - than know and be disappointed haha i will one day but for the time being she's just a stockie - running slightly higher than stock boost with a dodgy bleed valve - thats it.

Didnt realise u had an auto memphis! Have u put a cooler or anything in yours? An intercooler and replacing the horrible pussie zorst is my mission but i keep saving up for these goodies then having to spend the money on neccessities like tyres n shockies and now i need new brake pads *sigh*

[ix9]

Lauren,

You could ask chrisroi about his dyno run... 250ish RWHP, stock 94 Auto, with Full Zorst, POD, Front Mount, and 10psi.

His power anc fuel curves are close to perfect... I was amazed.

Dont forget when looking for a high-stall jobbie don't get one that's too high, or you'll be revving to 2000rpm before even moving...

That said, bully's Supra pulls 13.99 with only a POD and cold air, Stock zorst. His auto chirps into 2nd too!

[JH32]

What about a shift kit?

A B&M shifter like what the V8 boys use

Could you use one of those on a turbo?

[memphis]

Yeh Im an auto boy

In the past month mine got the zorst,pod,untuned safc n thats it (I picked up my HKS zorst for $400 btw...bargian hunting all the way )

cooler & front pipe are my next mods, along with upped boost.

btw: my auto does chirp into 2nd also

[rev210]

JiMiH,

I think your confusing the shift kit with something like the B&M 'shifter'.

I have a B&M mega shifter in the volvo, it's a ratchet shifter for fast changes, however the trans being stock had other ideas about how quick it would change between gears.

The Shift kit is just a mod to the valve body to allow minimal slipage on gear selection. The most extreme case is banging into every gear, great for the strip but hell on the kids in the baby seats. You can have the change set to something inbetween.

[Nizmo]

hehe i would be happy with 250hp yeah my zorst is pitiful actually my whole car is pitiful - everyone elses cars came with toys but mine seems to be from the ground up job hehe u got your zorst very cheap - they dont have a second one laying around anywhere do they haha

My ZX (also auto) just seems to make my skyline look like a slug ..... if i didnt have two flat tyres on it i wouldve put that on the dyno then my skyline cos the ZX's boost sends u almost thru the windscreen - boost on the Skyline is a lot more subtle. It irratates me that my old car is faster than my new toy!

[Nizmo]

i dont understand people that buy autos the convert to manual ..... why didn tu just buy a manual?

[Xeron]

oh sorry, when i say a larger stall, i mean a higher rpm stall converter

Sometimes u just cant get the exact car u want for the price nizmo, or u really need a car and hey theres a perfectly good one avaliable, just its an auto. Although economically it isn't really worth it in the long run.

[skylineakt]

Hey Nizmo

I have an auto too and the reason why I didn't buy a manual was because it was more expensive at the time, and I was short of cash and was just happy with a SKYLINE haha

Also I had bad experience with my last manual car, i basically lost 3rd gear and couldn't be bothered getting it fixed.

I too get heaps of SH$T from the guys because my car is auto, but hey at least I can drink my slurpee and cruise at the same time hehe. And half of them can't really drive anyway so I usually beat them off the line. But I guess if my auto goes hay-wire. I probaly install a manual gearbox.

Just one questions go the guys here, when doing a conversion from auto to manual to you have to change the computer as well?? The reason i ask was that one of my mates did a conversion a Vtec Prelude without changing the comp, and for some reason his vtec wasn't kicking in probaly.

I'm assuming it is because of the different gearing ratio and the extra gear.