

| Subject: | Re: Cut tranny input shaft while still in tranny? (for engine conversion) |
| From: | neil N |
| Date: | Fri, 7 Mar 2008 19:22:47 -0800 |
Useful info. Thanks. That's interesting that the diesel input shaft is only 1/8" past face of transaxle. I would have assumed it was more than that. I think the key here, is for me to measure what I have and compare it to the info I have from KEP. Shouldn't be too hard to do. I have calipers, so I'll measure up the depth of hole in Jetta crank, etc. I figure that as long as there is a little wiggle room (1-2 mm?) between bottom of hole in Jetta crank, and end of input shaft, that should do. Neil. On Fri, Mar 7, 2008 at 6:18 PM, Scott Daniel - Shazam <scottdaniel@turbovans.com> wrote: > > > > > Hi > > This is all a bit weird. > > What I do know is that the correct protrusion for a diesel vanagon type > input shaft is very close to flush with the bell housing face, maybe 1/16 > inch short of that. You can stand the trans on the bell housing face on the > floor just fine, for example., > > > > If you are working with a DK, that was on an air-cooled engine, the input > shaft for those sticks out almost a half inch too much. ( 7/16 is close > enough to a half inch � it's really about 12mm I think you take off. ) > > and� diesel flywheel, is that what you are using ? > if it's some adapter kit or special flywheel, ignore this. > > > > But the common thing is you have a trans and input shaft that was for an > air-cooled and it's too long for a inline 4 engine using a diesel flywheel > and clutch. > > > > And I'll tell you about KEP, yes, engines and vw transaxles is 'their thing' > and they don't have their nose buried in vanagons exclusively like we do. > > For example, when I bought a throttle body air duct for a Subaru engine in a > vanagon, they ask 'air cooled or water cooled." ? > > So it's a water cooled Subaru engine in an 82 diesel westy which is also > water cooled, so I say watercooled. > > > > Well it turns out they offer a flat squished air duct that you would use if > you were putting a soobie engine into an air cooled vanagon, due to the > forward location of the transaxle in those, compared to waterboxer vanagons. > ( makes the soobie throttle body very close the firewall ) . What they > don't know is that the 82 diesel vanagon, while watercooled, also uses that > forward trans location compared to waterboxers. > > So their real question should be 80 to 82, or 83 and up ? > > But they are not clued in enough to make that distinction, and not > interested in the correct information either that I could tell. > > As I turned out I really wanted the normal more gradually bent one since > someone had cut the firewall out anyway. If they just would have explained > it like I did here, I could have gotten the right part in the first place. > Anyone want to buy my unused air duct for a soboie engine in an early > vanagon ? > > > And just to give you an idea of Hobart's way of thinking � I asked him why > waterboxers actually have the transaxle and engine sitting two inches > further aft than 80 to 82's., because there is room for them to fit in the > more forward location, and that's better weight distribution wise in the > vehicle. > > The first words out of his mouth were about increasing the power of the > engine, and when they did that they had to have a water oil cooler for > automatic transmissions at the front of the trans, > > Which is a round about way of saying that for 83 and up waterboxers, it was > convenient to mount all the engines and transmissions two inches more aft so > that the automatics could have room for a cooler there at the nose of the > trans � same thing, just a strange way to say it to me. One time calling > about a diesel application, I had to remind the person I was speaking to 3 > times during the convo that it was about a diesel, and not a Subaru. > > So be careful is what I am saying. > > IF you are using a diesel vanagon type flywheel, I do know that 'just a tad > short of flush' is the right input shaft protrusion distance. > > I just went an measured a dead stock virgin diesel vanagon , and input > shaft protrusion is 1/8 inch short of the bell housing face. > > > > Maybe one of these days I'll put my resume' of 44+ years of racing cars and > motorcycles, , working on every kind of car there is, aircraft work, > fabrication philosophies, many engine conversions, and my personal driving > records on my website just in case that the fact that I probably know what > I'm talking about quite often is not self-evident enough just from what I > write. I do try to be very responsible about what I say, like if I'm not > sure when I write about something I will put "I believe' and so forth. And > I don't think I know everything, but I do know a thing or two and I'm > careful about what I say pretty much. > > > -----Original Message----- > From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of > neil N > Sent: Friday, March 07, 2008 5:33 PM > To: vanagon@GERRY.VANAGON.COM > Subject: Re: Cut tranny input shaft while still in tranny? (for engine > conversion) > > > > > > Interesting point about wear on the input shaft. > > > > Re: cutting. > > > > I checked with KEP. Their supplement "says" I need to cut it. > > > > The original supplement that c/w the kit, basically says that '72 and > > newer buses with type IV engines have longer input shafts on tranny. > > They list the "Rabbit" engine as one that the longer shaft interferes > > with. (I'm doing a Jetta) It continues to say "....... grind 7/16" off > > the end of the original shaft so it only protrudes 9/16" past the face > > of the transaxle" > > > > A more recently edited supplement says: > > > > "If you do not know the year of the transaxle then measure the > > distance the input shaft protrudes past the face of the transaxle. > > The '72 and newer sticks out more than an inch where all the older > > ones protrude about �". > > > > The way I read it, it infers the amount to be cut, but doesn't give a > > measurement. > > > > Anyway. Not taking this "public". Just relaying what was sent to me. > > Regardless, I need to clarify this with them. > > > > But honestly I can't "see" why it needs to be cut. I am on the same > > page with your thought that the plate adds distance thereby > > effectively shortening the longer shaft. > > > > Hmmmm...... > > > > Neil. > > > > > > > > > > > > On Fri, Mar 7, 2008 at 4:55 PM, Mark Drillock <drillock@earthlink.net> > wrote: > > > If you are not changing over to the diesel bell housing, WHY are you > > > shortening the shaft? AFAIK, the adapter plates for inline 4 cyls add > > > enough thickness to make up for the longer wbx shaft. Maybe I'm mistaken? > > > > > > I have shortened several and also swapped in many shorter shafts when > > > using a gasser tranny with a diesel bell housing since that needs to be > > > done in such a situation. Lately I just shorten the shafts since this > > > cuts off the part of the shaft that gets worn in the boxer setup. > > > Factory short shafts are often worn also so cutting a long one puts a > > > fresh surface where the pilot bearing rides. > > > > > > Mark > > > > > > > > > > > > > > > > > > neil N wrote: > > > > Thanks Mark. > > > > > > > > Good tips. I was hoping I could cut in situ. It'll save a little money > > > > (gasket/seal) and save some work. I'd rather take that money saved > > > > from not buying the big gasket and seal and put it in a Dremel setup. > > > > > > > > I wondered if the shaft wasn't hard steel. > > > > > > > > Neil. > > > > > > > > On 3/7/08, Mark Drillock <drillock@earthlink.net> wrote: > > > >> I cut them in the tranny. I use a heavy duty cutting disc in a Dremel, > > > >> while someone else turns the shaft. I work a ring cut deeper and > deeper > > > >> as they turn one CV flange and hold the other still with the tranny in > > > >> gear. The shaft is pretty hard and gets hot so I have a rag soaked > with > > > >> water wrapped around the rest of the shaft and another that I use to > > > >> periodically cool the tip. > > > >> > > > >> After the cut I use an angle grinder to put a bevel on the edge of the > > > >> tip, again while the shaft is turned. > > > >> > > > >> The Dremel blade is an abrasive type with fiber reinforcing. > > > >> > > > >> Mark > > > >> > > > >> > > > >> > > > >> neil N wrote: > > > >>> Hi all. > > > >>> > > > >>> Am getting closer to mounting the Jetta engine so am researching > input > > > >>> shaft stuff. > > > >>> > > > >>> Can I cut the input shaft while it's still in the tranny? > > > >>> > > > >>> It looks possible, but I don't know if hacksawing away at it is be > bad > > > >>> for parts attached to it. Plus angling (shaping) the end might > present > > > >>> a challenge. > > > >>> > > > >>> Thanks! > > > >>> > > > >>> Neil. > > > >>> > > > >>> > > > >>> -- > > > >>> Neil Nicholson. 1981 Air Cooled Westfalia - "Jaco" > > > >>> > > > >>> http://web.mac.com/tubaneil > > > >>> http://tubaneil.googlepages.com/ > > > >>> > > > > -- > > > > Neil Nicholson. 1981 Air Cooled Westfalia - "Jaco" > > > > http://web.mac.com/tubaneil > > > > http://tubaneil.googlepages.com/ > > > > > > > > > > > > > > > -- > > Neil Nicholson. 1981 Air Cooled Westfalia - "Jaco" > > > > http://web.mac.com/tubaneil > > http://tubaneil.googlepages.com/ > > > > > > > -- > > No virus found in this incoming message. > > Checked by AVG Free Edition. > > Version: 7.5.516 / Virus Database: 269.21.6/1318 - Release Date: 3/7/2008 > 2:01 PM > > -- Neil Nicholson. 1981 Air Cooled Westfalia - "Jaco" http://web.mac.com/tubaneil http://tubaneil.googlepages.com/
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