Alloytec tuning vs 6 spd manual box

[Phreddy]

OK, my Alloytec is as stock as the day it rolled out of the factory apart from a K&N filter panel. Ever since the first drive I was disappointed with the lack of bottom end, but pretty impressed with the poke at higher revs.

I've done a lot of sandbagging on the related performance threads for the Alloytec engine, and noted the discussions about the standard clutch setup and how inadequate it it once there's some more ponies to cope with. I'm under the impression Tex do a retrofit clutch for these, but they don't have anything on their website about it.

I'm also considering that if a fella was to get real with Alloytec mods and start making some fair dinkum power, how would the Aisin 6 speed gearbox handle that? As far as I'm aware they are already close to the horsepower/torque limits as set by the manufacturer - once an Alloytec is allowed to "free the beast", would this be the next point of failure?? (after the clutch, that is...)

How difficult would it be to mate a T56 up with the Alloytec block? Would that also open up the clutch options a bit as well?

Thoughts??

[Benboy]

Not enough power - suggest you get your car tuned, obviously something wrong with it. Standard Alloytecs are nothing but 'toey' off the line.

[f1tzy]

Nothing but toey off the line? I have found it to be the other way around. Nothing below 3000rpm

[Phreddy]

I can't agree Benboy - I've had two Buick V6 Commys (both VN), two ecotecs (VS, VT) and now the VZ - compared to the 3.8 V6 the Alloytecs are a slug off the bottom end. I think you'd have to be in the small minority by considering the Alloytec is toey off the line. I'm not altogether sure about 3Krpm either f1tzy - I reckon they're not too bad from about 1800-2000 onwards, but it's when they get above about 3500 that they really boogie - which is where the old Buicks / Ecotecs were starting to run out of breath. (I mean stock there too, by the way - I know they can do much better with a little work...)

OK, getting a tune helps, but that's not the point of the thread - I'm wondering if the rest of the driveline is up to it - the clutch certainly seems not to be. I'm thinking of getting a tune - and much more - sometime in the future, so I'd like to be prepared for whatever else might be required. (Raptor's blower kit development is becoming interesting....)

So, just to restate the questions - What are the options for aftermarket clutch? Would it be wise to look at the possibility of bolting up a T56 gearbox?

[naf33n]

Not enough power - suggest you get your car tuned, obviously something wrong with it. Standard Alloytecs are nothing but 'toey' off the line.

ha i like your jokes,

greg i know what you mean about the clutch ive been doing some hunting around and found this from extreme clutches and also there is the one from tex but cant find any info on it,

in my opinion the gearbox will be up to the task of bolt on upgrades, but if your going to be chasing crazy power, maybe and box rebuild would be a better alternative then a gearbox swap, i no you will be paying a good couple of grand for a T56, and then fitting and more then likely some sort of custom bell housing. which would not be cheap.

[monaro327]

According to Aisin the 6 speed is rated for 465nm of torque the allotec is only 340 so plenty of room there.

main issue with the clutch setup isn't actually the clutch it's the dmfw. xtreme have a full replacement kit for about $1500.

[Willz]

According to Aisin the 6 speed is rated for 465nm of torque the allotec is only 340 so plenty of room there.

This is what ive found...

http://media.gm.com/us/powertrain/en...in_AY6_MV1.xls

Thats the gm powertrain link for the aisin AY6. 345nm is its rated torque

[monaro327]

link eads to a blank page for me, but i found a similar article from gm that does state 345nm odd that gm rate the box at 345nm yet aisin rate it at 465nm. seeing as the same box is used in the toyota FJ cruiser(4.0litre v6) and that has a engine torque rating of 380nm i would tend to believe aisin.

also the same aisin box is retained in the new ID alloytec motors wich produce 370nm of torque. maybe the dmf is used by gm is tuned for 345nm of torque and thats why they give such a low rating.

[killzone]

compared to my old vn i hade my ve alloytec shits all over the buic v6s bottom end and in the high end i would deff go and see holden about it mate and i smash my mates vt eco off the start he just cant keep me any where he recons im pulling away from him no matter what he does and he has 2 vts he has one and his misses has on neather can keep the alloytec ... only way the alloytec is dogish of the start is if u get the sytart stuffed up ... The AY-6 is a 6-speed manual transmission manufactured by Aisin. It is designed for longitudinal engine applications and can handle up to 345 ft·lbf (468 N·m) of torque.
my advice is if u want to put more than 100kw more power into ur car stay with the asian but if ur realy wanting to do big kw torgue numbers change to a termac 6 speed thats in the ss 6 littres or some thing stonger from termac again lol ..

[killzone]

oh and i have a new clutch in my ve now to from speedy got rid of the duel mass flywheel stupid pice of shit that was heaps better now with the singal mass and i have a heavy duty organic clutch plate best thing i will ever do to it lol

[VZ_commo91]

I think Greg would have sorting this out seeing tho it's been 2 years.