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#15
by
Quantum TD
on 05 Mar, 2008 16:48
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I saw in your other thread that you've got an FF trans. As far as I know, nearly all of the FF code transmission do not have the bosses for the MK II rear trans mount. It is possible that there are late FF transmissions out there that have the bosses, but I've yet to see one. So, you may want ot do a side-by-side comparison to make sure it'll mount up. I had a nice FF that I was gonna put into a MK II: wouldn' happen. You may have to go ACH. With the power your motor will put out, you should be OK. The only variable will be the bigger rims.
Let us know how it goes.
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#16
by
zukgod1
on 05 Mar, 2008 17:57
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I don't have the old one out yet but at first glance I don't see anything different between the two. Only 3 mounts total and the one on the trans is in the same place on both transmissions.
Is the FF trans a weaker trans or are you refering to the gear ratio on the bigger wheel comment?
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#17
by
Quantum TD
on 05 Mar, 2008 18:21
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We'll, I'm looking at 2 FF transmissions here in my garage. Neither one has the bosses for the rear aluminum mount for a MK II. The FF was originally a MK 1 trans. It was popular on the early models (1978-1982). As far as I know, only the late (1983-1984) transmissions had the bosses (the thickened tubes on the side of the diff casing), to accept the later MK 2 style rear mount. If I'm not mistaken, only the 9A, 2H, and 4K transmission had those bosses for the mounts: basically, only the late MK 1 transmissions with limited slip had them. I had to find out the hard way: by assuming that the FF would fit into a MK 2. I ended up having to buy an ACN. It was a bad match for my 1991 Jetta, because I had a 1.6NA pumping out a mere 55 hp.
Anyway, the FF that I tired to put into my MK 2, and the ones I have in my garage, all lack the bosses on the diff housing to bolt up the mount. The MK1 used 3 studs on the pass side of the trans, the MK 2 uses 3 bolts on the pass side. The holes between the two models are offset by one hole. When looking at the FF in my garage, there is only 1 out of 3 of the bosses in place. This is not a matter of stregth, as much as it is about ease of mounting. You could mount the FF in the car, but you'd have to weld on some bosses and drill them out, or transfer the guts to a MK II casing.
So,either way, I doubt that your trans has the bosses for the MK 2 rear mount. It's possible I guess, if you happen to have found a late MK1 FF code that is actually ready to go.
As far as the rims, I was suggesting that if you can't get the FF to go in, you might want/have to buy one of the ubiquitous ACN (typo in original message), ASF, or ACL that came on about 80-90% of all other MK 2 gassers. All of these transmissions have 3.67 gears, but do have a .75 5th. I'd be reticent (having tried one) to put any of these transmissions on a stock 1.6NA, since the final drive really kills the power band. But, since you'll probably be pushing a lot more HP than a 1.6NA, then you might be good (maybe even perfect), with a 3.67 FD
The only drawback I forsaw, was that you had some large, and presumably heavy, rims on the car. The greater rotational mass coupled with the larger diameter, requires greater torque to spin the wheels. So, the 3.67 may not be geared low enough to get you optimum performance at low speeds. At highway speeds, you'll get great fuel economy. But takeoffs might be sluggish. The only way to find out how it will perform is to get your car tuned the way you want it, and try out either trans (with a 3.94, 3.89, or 3.67) final drive.
Let us know how it goes.
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#18
by
zukgod1
on 05 Mar, 2008 18:35
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Well I will get the old one out tomorrow and compair the 2 to see what's up, I actually have 4 FF transmissions so I may be ok. I will report back once I get the old one out.
As far as the wheels go, I'm sure they are heavier but the overall dia is the same, the mass isn't a big geal with the power I have at the moment. Who knows this may take a couple swaps to get it right.
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#19
by
zukgod1
on 05 Mar, 2008 18:36
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I just got home so I grabbed a flashlight and went out looking.
You are correct sir!! :cry:
The FF I have sitting here doesn't have the bosses I need for the alum part of the rear mount.
The other 2 I have are FN's not FF's then there is another FF as well.
I'll have to look at them tomorrow. Other wise it's back to plan A which is to head to the salvage yard Saturday where I found a couple ACN's this week.
I guess if I was really ambitious I could swap the 5th gear... I would still have that damn 3.94 r&p though...
UNLESS!! I take the .71 5th and install it in a ACH trans, then I would have the 3.67 R&P and the .71 5th gear :twisted: 3100 rpm= 79 mph..
I sure appreciate the heads up, I would have been bummed way more if I had not discovered this until Sat.
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#20
by
Quantum TD
on 06 Mar, 2008 00:08
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Hmm. A couple of thoughts.
If you already have an ACH trans (note, different from an ACN), why not just use that? It's got a 3.94 final drive and a .75 fifth gear. It's an original diesel trans (only came on diesels) and it's probably perfect for your car. Or are you talking about buying an ACN, and installing the .71 off your FF trans?
I wouldn't recommend swapping a .71 onto any trans, unless it already had a .75 5th gear on it already. The change between the two would be rather dramatic, especially when you're between about 50-65 MPH, which is where most people drive all the time.
As for the FN, it's got the same gears as the FF, and may in fact have the bosses, since it was used on later cars (up to 1983). You may look into that bit further before buying another trans.
Also, with the FF, if you're thinking of pulling the 5th gear, you'd better get the production date off the bottom. According to Scirocco gears page, the early (up to 1980) FF trans had a ..75 5th gear, and the later ones had a .71 5th gear. Hard to believe, but I had one of each. I tried each on my Rabbit, and I could tell a difference. Heres a link for a production date decoder:
http://www.4crawler.com/Diesel/VW_020_transmission.shtmlGood luck.
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#21
by
zukgod1
on 06 Mar, 2008 06:42
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Hmm. A couple of thoughts.
If you already have an ACH trans (note, different from an ACN), why not just use that? It's got a 3.94 final drive and a .75 fifth gear. It's an original diesel trans (only came on diesels) and it's probably perfect for your car. Or are you talking about buying an ACN, and installing the .71 off your FF trans?
I dont have either but can get at a salvage yard. I want the tallest gearing I can get for this car thus the 3.67 and .75 desired ratio found in the ACN.
If I install the .71 in anything it would be the ACN not the ACH.
I wouldn't recommend swapping a .71 onto any trans, unless it already had a .75 5th gear on it already. The change between the two would be rather dramatic, especially when you're between about 50-65 MPH, which is where most people drive all the time.
See above, installing in a ACN which has a .75 5th.
Also, with the FF, if you're thinking of pulling the 5th gear, you'd better get the production date off the bottom. According to Scirocco gears page, the early (up to 1980) FF trans had a ..75 5th gear, and the later ones had a .71 5th gear. Hard to believe, but I had one of each. I tried each on my Rabbit, and I could tell a difference. Heres a link for a production date decoder:
Yes I'm aware some of the FF's had the .75 instead of the .71 5th gear. And obviously I would count the teach before I installed it. Wouldn't make much sense to swap a .75 for a .75.
I'm going to check out the FN's I have access to and if one of them has the needed bosses than I will just use that trans, other wise I'll be heading to find an ACN Saturday.
Thanks again for the heads up.
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#22
by
zukgod1
on 06 Mar, 2008 06:44
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Fixed..
That's weird, I quoted everything backwards.....
Oh well I'll bet you can figure it out.
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#23
by
zukgod1
on 06 Mar, 2008 20:21
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Not that I doubted him but Quantum TD was correct.
The FF trans is missing the mount locations on the rear of the trans the FN coded transmissions are missing them as well.
I looks to me like it would be cake to make a plate to mount to the trans so the rear mount had a place to bolt to but as I'm not really sure of which FF trans I'm working with (.75 vs .71 5th gear) I'm not going to mess with it.
Saturday I'm heading to pick up an ACN coded trans.
BTW, that wasn't fun removing the trans. Not really hard but it's been YEARS sense I've removed one so it wasn't fun.
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#24
by
zukgod1
on 08 Mar, 2008 19:57
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I was able to locate and install an ACN today.
MUCH nicer, now instead of 66mph @ 3500rpm it's at 84mph same RPM.
Wonderful..!!
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#25
by
zukgod1
on 10 Mar, 2008 08:28
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Mr Diesel (from Dubnet) and I spent the morning pulling a trans out of a car @ the salvage yard then reinstalling it in my car at home.
Took it for a quick drive and the gear ratio was WAY better. Didn't get to drive on the freeway like I had planned as after a couple mile of back roads the damn block heater pushed out and the coolant proceeded to blow out the hole
Was able to baby it back home and decided that was enough fun for the day so I took Mr Diesel home and returned to my house.
Upon my return I decided to go ahead and get the car back in the air so I when I decided to start on the block heater issue it would already be in the air.
Well 5 min later I was back under it trying to figure out what I was going to do, I removed the block heater (new BTW) and headed out to the shed to figure it out.
compared my new one to one Mr Diesel had given me and they were identical. So I installed the used one and same problem, it wont tighten, removed it again and took a look at the new one once again. I tried a larger O Ring on the new one but no go so removed yet again. Then I took a look at the old one and compared the anchor to the new one and I'll be danged if the new one wasn't assembled incorrectly. Took it apart and reassembled the correct way then reinstalled and BAM! it tightened up.
So with that out of the way I decided to try to figure out why it was running warm so I removed the front of the car again and pulled the radiator out. It looks like it may be a tad plugged up so I'm going to figure out a way to back flush it then I'll install a Passat fan assy and see if that takes care of it. There is quite allot of dirt and debris in the fins so I'll take the rad and A/C condenser to the car wash and wash them out before I reinstall them.
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#26
by
zukgod1
on 10 Mar, 2008 08:45
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Couple more pics for fun.
Need to get the spoiler on the trunk, tinted windows, some kind of security system, and a spoiler for my roof rack. Oh ya, and get the knee bar installed and the Recaro's.
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#27
by
burn_your_money
on 10 Mar, 2008 11:35
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Damn where's all your snow? I'm going to move in with you or Cody
Progress looks good
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#28
by
Baselyne
on 11 Mar, 2008 09:17
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lookin good man, perfect interior! Im down with the way you mounted the lcd....you got gps by chance? That's stock mk2 center consol area you fab'd it into? what size is the screen 7"?
Damn where's all your snow? I'm going to move in with you or Cody
Progress looks good
tyler, there not as lucky as we are having piles of snow dampening progression and their salvage yards covered! canada's white gold, just wait for the melt pffff
Damn nice progress forsure!
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#29
by
zukgod1
on 11 Mar, 2008 09:48
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lookin good man, perfect interior! Im down with the way you mounted the lcd....you got gps by chance? That's stock mk2 center consol area you fab'd it into? what size is the screen 7"?
That's a Pioneer AVIC-Z2, 30 gig HD, Navigation, XM, DVD, Blue-Tooth.
7" touch screen.. Paid more for that than the car.
Yes that is a OE console I modded to fit the head unit. I'm going to have to trim the knee bar so it will clear the back of the unit as well.
Then I'm thinking I'll get 2 more consoles and cut the face of one for a dummy face on this one so when I get out I can just slide it over the head unit making it look like a stock console with no radio at all then keep the other one for when the car goes away I'll have a good console to re install.
I'll get the front Recaro's in tonight probably, already installed the matching rear.
Thanks for the comments.