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Engine Specific Info and Questions => IDI Engine => Topic started by: RabbitJockey on November 12, 2006, 09:33:21 am
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i've currently got an ff transmission, which i like, i think it is well geared, so i was thinking of sticking an fn on to my car since it has the same gear but it has a 20% limited slip on it that i could upgrade to a 40% or 80% kit. and i was looking on scirocco gear up to see if there were any other transmissions that might suit, i know i want something nice and fairly tall since our cars can't rev so much (one reason i like the ff) on the gear up site it looked like an acn might be nice because it has a bigger final drive, first gear is about the same but second third and 4th is longer, and then 5th ends up about the same, seems like it might be nice. lemme know all ur findings
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My personal favorite and easy to come up with tranny solution is get one of these tranny codes from a mk2 8v gasser: ASF, AON, ACN, ACL, they have a 3.67 final which is real nice, and if you do a lot of highway cruising like me swap out the .75 5th gear in those tranny's for a .71 from a '81 and newer FF, FN, FH, FJ, 7A, or 7D.
So you should pull the 5th out of your current box, grab an ASF and throw the 5th in there and put in one of those peloquin mini slip details like you were talking about. Thats a great budget transmission right there.
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i bet that would put my top speed alot higher, currently ive gone to 105, and could have gone to 110 easily. i dunno about the 4th gear, i kinda like whats in it now, but since third is taller as well it's probably all good.
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If you've got the gearbox apart, you might want to swap those stupid kamakaze lemming crownwheel rivets for proper high tensile bolts. So says the six BIG holes in my gearbox. :evil: page39 chapter9 Bentley.
On the bright side, it took more than 100 miles of 90mph motorway with nil oil to sieze up outside my house. So I saved on a towtruck :)
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atleast now you have an excuse to upgrade
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are any of those trannies going to be any stronger than what's on there now? I've got an '82 with the .75 5th and I'm putting in an AAZ, I was just gonna baby it, but I've been thinking of going with a stronger box.
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if you want something much much stronger you'll wanna go with an 02a transmission from a tdi or pretty much anything past 1999
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I put a cryo'ed 3.67 ring/pinion gear set in my FN transaxle (already has a Quaiffe limited slip). Have'nt had a chance to get it on the road yet, but it should be a nice match with my 1.9D engine.
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can the inside gears be swapped around? I bought the 4-puck PD clutch for the o2o already, I'm down with swapping internals around, I could cryo treat them too, that should take everything a VNT-15 could possibly throw at it. only going to be able to throw 16-18psi in it anyway.
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AMC, DFQ, CHE, i was looking on gear up, looks like these mk3 transmissions would be rather nice as well, 3.67, 1=3.45, 2= 1.94, 3= 1.29, 4= .97, and 5=.80. i think 5th gear would need some changing on that haha. could be a little tall, but i think the later transmissions could take a little more beating
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holy moly, these would be even taller, but whos to say taller is always better...
ATH, DFP, CHD
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i'm also kinda curious how important the limited slip is, alot of the burn outs i do come in on both wheels, and it's fun because the front end floats around then haha
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Well since my commute is all of 2 miles Ive got my stock AGS box. I plan on swapping out the 3rd and 4th for some closer ones. More like an AUG box with the .75 5th and the 3.94 R&p.
(http://www.brokevw.com/020chart.jpg)
Stolen from http://brokevw.com/
Really good site with my Favorite pic ever....
(http://brokevw.com/keyboard_bang.gif)
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I just drove about 230 km to pick up a CHE tranny with 0.71 upgraded 5th gear, and 80% limited slip for $200 bucks... thanks to burn_your_money for the heads up. Only 289000km on the tranny too... awesome deal!!!!
cant wait!!! its from a mk3
Final 1st 2nd 3rd 4th 5th
3.67 3.45 1.94 1.29 0.97 0.71
about 125 kph @ 3000 rpm... can you dig it? man i think i'm going to just tear my old box apart and learn what i can... its not worth much since the gearing sucks... barely 100 km/h @ 3000 rpm sucks! great for passing on the highway, but not much else.
only regret is that i didnt see it sooner... not that i would have had the $1500 for the tranny + 1.9TD... that had an upgraded turbo from a 1.6... but still... what a deal for a nice big motor.
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I put a cryo'ed 3.67 ring/pinion gear set in my FN transaxle (already has a Quaiffe limited slip). Have'nt had a chance to get it on the road yet, but it should be a nice match with my 1.9D engine.
Cryo'ed? Not familiar with the term.
Just out of curiosity, how well does some of this stuff translate over to the 016 VW transmission and a 2.0L 5-cylinder? Stock gearing in the trans puts me right around 60mph @ just under 3k RPM in fifth gear, which sucks a good deal. 4.11 final drive and a .9x fifth gear are gross.
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cryo treating is the process of continueing the heat treatment process by chilling.
When you heat treat metal, you heat it up, then quench it. The quenching takes the heat out really fast, and it changes the grain structure of the metal.
Cryo treating takes this one step further by bringing what would be the final quench temperature down to WELL below freezing.
It makes metal VERY hard, and extremely wear resistant, and less prone to cracking and stress breaking.
They cryo treat brake rotors alot. It helps significantly in the longevity due to rotor cracking because of the stresses that a brake rotor is under.
Cryo treating your gears is a very good idea if you're in there anyway cause it'll remove the possibility of stress fractures and sheering teeth off the gears.
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cryo treating is the process of continueing the heat treatment process by chilling.
When you heat treat metal, you heat it up, then quench it. The quenching takes the heat out really fast, and it changes the grain structure of the metal.
Cryo treating takes this one step further by bringing what would be the final quench temperature down to WELL below freezing.
It makes metal VERY hard, and extremely wear resistant, and less prone to cracking and stress breaking.
Ohhhh... that makes sense. I figured it was something involving extreme cold, but considering a lot of metals get brittle and crack when subjected to extreme cold, it didn't make sense.
Where would one send things to have this done? I'll be taking apart/rebuilding an 016 at some point eventually anyway, might as well do this then.
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I haven't actually sent anything out, so I can't give experience with anyone, but there are a few to be found through google.
www.300below.com
http://www.metal-wear.com/racing_component_prices.htm
www.onecryo.com these guys are somewhat local to me, I'll probably end up going with them since I don't have to ship anything, and can see their shop.
the really weird thing about cryo treating is that alot of professional musicians cryo treat their instruments. They report that they have a brighter, fuller sound. Really weird!! It's all on a molecular level, but they cryo firearms, and the like too.
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looks like the process isn't just throwing something into a vat of liquid nitrogen hehe... actually giving a gradual change in temperature is probably what strengthens the molecular structure of whatever is cryo'd...
makes me wonder just useful it could be... on an aluminum head maybe?
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I just drove about 230 km to pick up a CHE tranny with 0.71 upgraded 5th gear, and 80% limited slip for $200 bucks... thanks to burn_your_money for the heads up. Only 289000km on the tranny too... awesome deal!!!!
cant wait!!! its from a mk3
Final 1st 2nd 3rd 4th 5th
3.67 3.45 1.94 1.29 0.97 0.71
about 125 kph @ 3000 rpm... can you dig it? man i think i'm going to just tear my old box apart and learn what i can... its not worth much since the gearing sucks... barely 100 km/h @ 3000 rpm sucks! great for passing on the highway, but not much else.
only regret is that i didnt see it sooner... not that i would have had the $1500 for the tranny + 1.9TD... that had an upgraded turbo from a 1.6... but still... what a deal for a nice big motor.
Sounds great. Is the CHE a direct bolt in to the MK2? I'd be interested in doing that as well.
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I just drove about 230 km to pick up a CHE tranny thanks to burn_your_money
You're welcome. I was wondering who bought it. It's been for sale for months. I hope it treats you well
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I just drove about 230 km to pick up a CHE tranny thanks to burn_your_money
You're welcome. I was wondering who bought it. It's been for sale for months. I hope it treats you well
well i'm definitely going to treat it well :) i'm going to test the oil extreme concentrated additive mixed in with some redline in it. :) the 90mm flanges will stick right on to this tranny... very good buy! I've never driven a VW with pretty much any limited slip differential, so I cant wait!!!
I wouldn't go with the CHE stock tranny unless you're going to upgrade the 5th gear to 0.71... CHD does come with a 0.75 5th gear though... gives you about 74.3 MPH @ 3k rpm where the CHE with 0.71 gives 78mph @ 3k rpm. pretty slick! eat that you dirty old tranny in my car that i'm going to tear into and rape!!!! mwahahahahaha :twisted:
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I sent my gear set to http://www.nwcryo.com/, looks like similar prices to the other places. I had my gears treated since I blew up my old set and wanted something stronger to replace them with.
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id use a 7A box
when i build a good box for the tdi here,il lsend out the gears for the cryo,cause ive already blown out a 3rd gear
and if i build a 7A witha 3.67 i really dont wanna do that again :roll:
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I just drove about 230 km to pick up a CHE tranny with 0.71 upgraded 5th gear,
AMC, DFQ, CHE, i was looking on gear up, looks like these mk3 transmissions would be rather nice as well, 3.67, 1=3.45, 2= 1.94, 3= 1.29, 4= .97, and 5=.80. i think 5th gear would need some changing on that haha. could be a little tall, but i think the later transmissions could take a little more beating
I think the CHE, DFQ are 16V tranys with the bigger input shaft and have read that the 8V .71 gear can't be swapped over to the 16V trany.
That makes the CHE with the .71 swap very special, great trany. Take it easy on reverse in that one, I've heard they are weak in that trany.... had to swap one for a guy because he got tired of using his foot to back up.
I really like the AGS, and it fits an A1 or A2, has the studs for the rear motor mount and the bolt holes for the A2 mount.
id use a 7A box
when i build a good box for the tdi here,il lsend out the gears for the cryo,cause ive already blown out a 3rd gear
and if i build a 7A witha 3.67 i really dont wanna do that again
Why the 7A? I noticed my newest Rabbit GTI diesel project has a 7A in it.
I didn't see it on your list of 3.67s. so you swapped in a 3.67 and kept the rest of the gearing the same?
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i didnt build that box yet
im sayin that a 7A with a 3.67 would be nice in my tdi-m
but a std 7A is nice in a td
my 84 jetta td had one,it worked good
currently this asf that i got dropped right in
it has all the extra bosses to fit the mk1
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the che tranny i bought used to be hooked up to a '95 jetta diesel 1.9TD.
the guy upgraded from his 1.9TD to a VR6... not sure why... must have money to burn :) so if this tranny is vr6 compatible, why would he toss it?
shouldn't it fit? looks about the same... i guess we will find out!
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This is great info, thanks to everyone for posting
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i was just thinking about cryo treating... it makes a lot of sense doesn't it? for starters, look at snow flakes. if its too cold, you get hail. the cryo treating process starts slowly, to allow the molecules to uniformly position themselves in a solid matrix. too fast, and you'd get hail... lol
i wonder though... if stress and extreme heat etc. would render the cryo process useless? very interesting none the less!
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the che tranny i bought used to be hooked up to a '95 jetta diesel 1.9TD.
the guy upgraded from his 1.9TD to a VR6... not sure why... must have money to burn :) so if this tranny is vr6 compatible, why would he toss it?
shouldn't it fit? looks about the same... i guess we will find out!
Vr6 trannys have a different bellhousing, you can swap bellhousing from 4cyl to 6cyl though, but it requires a complete tranny teardown.
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are you saying i have a vr6 tranny? :? well if i need to i have a spare tranny i can dig into :)