NA drivetrain behind turbo engine: info and update
#26
The question has yet to be answered, "How is the TII transmission different?" I'm curious too!
I have never disassembled a t2 tranny, but the design is significantly different and stronger. How much, I do not know. I have never heard of a t2 tranny totally dying on the street, where I have heard of tons of NA trannies doing it.
#28
So is it possible to replace that one gear that failed with it's T2 counterpart or are the trannies engineared completly different??
OK but what about launching? Will it blow up?
Basically most of the time all the power of the engine is routed through the smallest, weakest gear in the transmission.
and how was the CF clutch i've heard not so good things on here about em
Tranny is still good, takin the abuse like a champ with my act street/strip clutch and HD pp, no grinding or anything.
i just don't wanna lose the N/A's taller Gear ratio's!
I dunno, im new at this, but let me get this right. Your saying that you can either have a working tranny, or a burnt out clutch with the N/A setup?
Curious, can an n/a flywheel be used with a TII tranny
#29
1991 Frankin7 ***RIP***
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i agree with all that was just said. for me, i'm using an NA drive line because of money. at the time i didn't have the extra cash for a TII tranny and rear end so i stuck with the NA driveline. i don't expect the tranny to hold up forever and i'm basically trying to keep a little money in the bank for WHEN it blows.
#30
Seduced by the DARK SIDE
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On my prevoius NA, about 2 years ago I chipped a tooth on the input gear.
I could hear it ticking, so I just drove easy.
When I priced a replacement input shaft, it was $90.
I ended up swapping the tranny.
I could hear it ticking, so I just drove easy.
When I priced a replacement input shaft, it was $90.
I ended up swapping the tranny.
#33
Banned. I got OWNED!!!
Anybody ever had a N/A tranny go out on the highway cruising at ~60. This is behind a N/A engine. Mine did without warning and I'm wondering if this is a fluke or what.
Any tips how to open the tranny up? I got it part of the way open but couldn't find the "trick" (I'm sure it's something insanely obvious) to get it completely open so I could see the gears. I'd like to see what damage the tranny actually has.
Any tips how to open the tranny up? I got it part of the way open but couldn't find the "trick" (I'm sure it's something insanely obvious) to get it completely open so I could see the gears. I'd like to see what damage the tranny actually has.
#34
Engine, Not Motor
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Originally Posted by DerangedHermit
Anybody ever had a N/A tranny go out on the highway cruising at ~60. This is behind a N/A engine. Mine did without warning and I'm wondering if this is a fluke or what.
I was climbing a hill in 5th gear, at around 9-10 PSI. The transmission started making a horrible squealing sound, then a few seconds later a sickening "clunk-snap". Coasted to the side of the road, and found that I had no drive in any gear....Got it towed home, and removal of the transmission showed a broken input shaft....Also, no transmission oil at all. As nearly as I can tell, the rear seal let go just after I got on the highway, and the transmission ran bone dry in about 30 miles...
#36
The TII case is a stonger gusseted design w/ seperate bell housing as well.
The stiff case keeps the gears under full mesh better under higher loads so you don't chip off teeth like on the NA trannies.
For instance, the Guru TII trans. dog box conversion has an additional bolt in girdle to further reinforce the case because even the tough "type R" TII transmission needs help sometimes...600hp drag launches....
The stiff case keeps the gears under full mesh better under higher loads so you don't chip off teeth like on the NA trannies.
For instance, the Guru TII trans. dog box conversion has an additional bolt in girdle to further reinforce the case because even the tough "type R" TII transmission needs help sometimes...600hp drag launches....
#37
S4 now S6 soon...
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i would be extemely interested to know if the TII tranny's basic function(one gear converting power to all the little ones) is the same as a N/As I ask because I have access EXTEMELY cheap rebuild parts, and a good friend who rebuilds trannies, being one of the many planning on putting alot of boost into an N/A motor I'd like to keep the lighter tranny and longer gears (I plan on entering some ORR events for fun down the road.) So if I could simply swap in the TII piece for the weaker N/A one that would be fantastic, if not I might just use this priceless information and spend some extra time on that piece shot-peening deburring cryotreating, whatever see if I can make it hold up to the 300+whp I'm aiming for.
#38
Former Moderator. RIP Icemark.
Originally Posted by BLUE TII
... even the tough "type R" TII transmission needs help sometimes...600hp drag launches....
#39
Banned. I got OWNED!!!
Originally Posted by Aaron Cake
Mine did, that's how I killed it. While it was not technically behind an NA engine....
I was climbing a hill in 5th gear, at around 9-10 PSI. The transmission started making a horrible squealing sound, then a few seconds later a sickening "clunk-snap". Coasted to the side of the road, and found that I had no drive in any gear....Got it towed home, and removal of the transmission showed a broken input shaft....Also, no transmission oil at all. As nearly as I can tell, the rear seal let go just after I got on the highway, and the transmission ran bone dry in about 30 miles...
I was climbing a hill in 5th gear, at around 9-10 PSI. The transmission started making a horrible squealing sound, then a few seconds later a sickening "clunk-snap". Coasted to the side of the road, and found that I had no drive in any gear....Got it towed home, and removal of the transmission showed a broken input shaft....Also, no transmission oil at all. As nearly as I can tell, the rear seal let go just after I got on the highway, and the transmission ran bone dry in about 30 miles...
#41
Banned. I got OWNED!!!
Originally Posted by RXciting
how many Miles/KM on the tranny and what kinda oil was used in it??
Frank
Frank
#42
Resident Know-it-All
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back when i had a modded NA (~190 hp), i killed 5 trannies. 3 were s4 NA, 2 were FB trannies. surprisingly enough, the FB trannies lasted longer and i liked the ratios better. all on worn stock clutches. I drive very hard, but not hard on trannies in particular. So, not that this post needs any more proof, but yeah, NA trannies are weak.
so far, i havent hurt the TII tranny at all, even with lots of mods and hard driving I had a brand new stock clutch when i built the TII, so im using that (which slips a little on hard accel...dont use these).
pat
ps all of the trannies i killed broke in the same way as the one on pg 1. one of em had brand new bearings in it, so thats not what does it.
so far, i havent hurt the TII tranny at all, even with lots of mods and hard driving I had a brand new stock clutch when i built the TII, so im using that (which slips a little on hard accel...dont use these).
pat
ps all of the trannies i killed broke in the same way as the one on pg 1. one of em had brand new bearings in it, so thats not what does it.
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