Take it from someone who bought the Twin HD..and had to go to the Triple HD.. in hindsight I would have gone with a triple...

e85 isnt cheap gas its rocket fuel. Some will say its better then c16/q16 etc. The anti knock properties e85 has is absolutely insane for being an 105octane fuel it does things 116-120octane cant do all while keeping egt's lower then normal.

That's pretty much my point. The whole reasoning for trying to buy a good used Exedy is because the OP is attempting to get something that will work for him on a budget. The problem here is if you buy a twin, end up making more torque then your original plans are, THEN you will end up having to upgrade to a triple anyways. If that happens, where's the savings? You'll have completely wasted the money that went into refreshing the twin and defeat the whole purpose.

Do yourself a favor OP, buy a good used twin and convert it into a triple. If you play it smart you can end up with an Exedy triple for less then the price of a new Exedy Twin.

why not a quadruple? it'll hold 1400lb/ft tq. might as well slap on a gt45r/55psi e85 and be done with it

i just posted i did 600wtq on mine.. clearly exedy underrates the twin plate HD. they claim its only good for about 530wtq. I know 3-4 other guys making similar also and running fine with the twin. i dont ever plan on putting slicks on and launching the car at 6500rpm either tho. but i know some guys that threw on drag radials and ran mid/low 10's with no issues with the twin.

As stated previously, the twin WILL NOT hold over 530wtq on a drag pass with slicks. Torque capacity is not rated by "rolling passes". If you ever plan on running with slicks even once, the Twin will be a complete waste of money once you reach the 530wtq range.

nice man. and when it starts to slip you know that it's time to replace and you dont have to be in fear of that trans getting damaged.

doubters,

It's like people recommending mcdonalds burgers and they say i feel good. it's keeping me full, no worries here i ate it 25 years. sooo what? when u go for triple by pass surgery in your 40's dont complain. the triple will work, the triple will hold more tq. duh! but, if that transmissions takes a poop or tcase whines and cries dont complain about it. and will you be there for the poor soul when he needs a new trans ??

side note

in top fuel drag racing as you know the power is unreal. 8000hp. yes the tq is unfathomable as well. sooo do they use a twin disk? hell no and not a triple either. but the point is, they do 1 run! 4 seconds or less. 1 run! and then the entire engine and transmission is disassembled and parts replaced. 6 disk clutch that lasts 3 runs and replaced. what's the relevance? the relevance is that they are aware that more tq more hp doesn't last looong without parts replacing or damage will happen. ultra high tq is only good when you keep replacing and monitoring the parts. this is for race teams or racers who are sponsored or individuals with cash, etc u get the point. and if you feel that this is a false statement, then honda,toyota,yamaha, mitsubishi, subaru, porsche are all fools they know nothing about racing and cars

My god man... they haven't used transmissons in top fuel in like....what, 15+ years? jebus, anyway I understand your point...but imo with a built trans, built T-case you'll be fine with a tripple. Its like anything else, it depends on how you drive it.

true, it does depend on the driving. i am assuming heavy abuse situations.

last race i saw was a long time ago and the fumes almost burned my eyes in the air, had to wear glasses man. i almost lost my hearing man, next time i wont sit so close! lol

in response to ryu and the constant if you put it on slicks comment most of us dont track our cars nor care about drag racing. Just spririted driving or shows if its a drag only monster then im all for it. who knows maybe ill build a lightweight voltex evo just for drag haaaaaaaaa

j/k

i would like to make occasional passes down the 1320, for instance at the sport compact shootout and the evo/dsm shootout..but like you said spirited driving and more of the road courses and auto-x

i never thought i would say this, as i like to bump heads with him but i agree with ryu 110%, i have one of those cars that makes gobs of power on 93 and with my original twin tilton i destroyed it with a single pass at the track. i put a triple exedy in and the pedal was much nicer and it can handle everything i can throw at my car without a issue. But i also dont drive my car like a rental car all day every day either. I also advised rockman much earlier in i believe his build tread carbon clutches are not ment for DD driving and will destroy them selves quickly unless you slip them from a standstill(AWD burnouts), i was given a "cool story bro" and now i hear it lasted 500 miles which honestly made me chuckle a bit. IF you are "NEVER EVER" going to put slicks on the car then honestly a twin will be fine because you will over power your tires before the clutch. But if you are going to put a slick of any kind you will just destory the clutch and driveline as slicks will wrinkle, hook and wreck poo. Ive seen a car split the transfer case clean down the casting lines with a stock turbo and a twin clutch on slicks. So if you are going to do the normal roll racing that we all do from time to time, im sure a twin will be fine. But if you start getting serious and put a set of actual slicks on then you might want to rethink that so you dont destroy the expensive parts. So take all of our opinions with a grain of salt because we are just giving you what has worked with us and without knowing how you drive, how hard you drive your car and how often you push her, our opinions are pretty moot

mullen,
The exedy twin will not survive drag passes at that horsepower level. Mine was slipping at 540whp on street tires ~ 450 ft lbs. I follow Lucas' recommendation... that the exedy twin is good for about 400lb ft for drag racing and thats it.

bought the carbon used 2 years ago for my future build. Did not do any research then about the different clutches. LOL also did not know my car already had a exedy twin HD in it. so im not tripping in the slightest about it. I simply bought a exedy twin hd rebuilt everything and moved on .