Re: 340sb with 5 speed conversion?
[Re: Clair_Davis]
#33094
01/03/09 07:16 PM
01/03/09 07:16 PM
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Joined: Feb 2003
Posts: 4,204 Fort Worth, TX
Clair_Davis
master
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master
Joined: Feb 2003
Posts: 4,204
Fort Worth, TX
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OK, here's what I found. All measurements are referenced off of the crank flange surface where the flywheel bolts down. With a functional clutch disk installed and the pressure plate torqued down, the diaphragm fingers were 3.425" above the crank flange. The flywheel was 0.700" thick at the bolt flange, and 1.35" thick from the wear surface down to the crank flange.
For comparison to the Hemi, the mounting surface of the crank flange to the LA block is 0.6", and the LA crank flange bolt pattern is about 6x3.435" DIA. The 3.7L V6 crank flange bolt pattern is 8x3.137" DIA. I'd be interested to see what the Hemi's crank BP is, just so I'd know.
I hope this info helps you figure out what's going on, and I'm sorry it took so long to get to you. Keep us posted.
Clair
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Re: 340sb with 5 speed conversion?
[Re: nebo]
#33102
04/06/09 05:42 PM
04/06/09 05:42 PM
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Joined: Sep 2003
Posts: 468 Germany, Northcoast
Buschi340
OP
mopar
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OP
mopar
Joined: Sep 2003
Posts: 468
Germany, Northcoast
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I made the hole for the shaft in the adapter a bit smaller than the Shaft. It is shrinked on the Shaft. You know what I mean? Diameter... hm, don't have it in my mind yet but can measure tomorrow. Here is the link to the partnumber: pilot bearing
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Re: 340sb with 5 speed conversion - speedo adapter
[Re: Clair_Davis]
#33105
04/08/09 04:07 PM
04/08/09 04:07 PM
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Joined: Sep 2003
Posts: 1,168 Vancouver, WA
MoparMarq
super stock
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super stock
Joined: Sep 2003
Posts: 1,168
Vancouver, WA
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FWIW I changed rear ends on my normally-aspirated Supra to one from a turbo model. The turbo model has 3.73 gears and the R154 trans, the NA model has 4.30 gears and the W58 trans. The speedo gears are not interchangeable as the diameters of the speedo driven gears are different. Since the gear and housing are concentric, as noted before, I had to get an adapter made to change the speedo cable speed so the speedo would read accurately. I imagine any speedo shop could do it, but the place I found was Tacoma Speedometer. The adapter fixed the ratio change and had the correct woodruff-key type input and output. I'm guessing they could make one with the woodruff-key type input and square-drive type Mopar output so that a Mopar cable would screw right on. The adapter was about 3.5 inches long, 3.0 inches wide, and about an inch thick - the size due to internal gearing, obviously. The output was of course offset from the input, but it still fit within the factory Supra tunnel okay. It will probably fit with the back of a home-brewed tunnel too, I imagine. If you need pics, (between work, kids, and the Mopar,) I could probably take a few within a week or so. -Marq
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Re: 340sb with 5 speed conversion - speedo adapter
[Re: MoparMarq]
#33106
04/10/09 09:59 AM
04/10/09 09:59 AM
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Joined: Feb 2003
Posts: 4,204 Fort Worth, TX
Clair_Davis
master
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master
Joined: Feb 2003
Posts: 4,204
Fort Worth, TX
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Quote:
If you need pics, (between work, kids, and the Mopar,) I could probably take a few within a week or so.
-Marq
Marq, A pic would be great - no rush either, I'm in the same boat as you and "spare time" has all but vaporized for me. Obviously this thread has been hanging in there for a while now.
Nebo, Cutting down the input shaft might be a way to go. I think there are even some new ones out there (Passon?), so if cost isn't a huge issue, it might be worth starting with a new unit. FWIW, I was going to go a different way than Buschi340 did. I was going to use the Mopar bearing/sleeve unit, but with the sleeve modified to fit the OEM Toyota bearing. Should be a simple enough operation if you've got a machine shop handy to open up the sleeve to the Yota roller bearing size.
Clair
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Re: 340sb with 5 speed conversion - speedo adapter
[Re: nebo]
#33109
04/15/09 05:10 PM
04/15/09 05:10 PM
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Joined: Feb 2003
Posts: 12,675 Columbia, CT
moper
I Live Here
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I Live Here
Joined: Feb 2003
Posts: 12,675
Columbia, CT
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Guys, I want to thank you guys for the level of detail on this swap. It motivated me to buy the trans and bellhuosing this afternoon. However, on the flywheel, I looked and the 3.9L is the same aftermarket part number as the 318 trucks from the late 70s and 80s. Now, I believe that earlier truck V8 neutral flywheels also interchange. Does anyone know if that's the case? I would love to be able to use the 143 tooth nuetral flywheel I already have... Again, I admire your tenacity and level of detail...
Well, art is art, isn't it? Still, on the other hand, water is water! And east is east and west is west and if you take cranberries and stew them like applesauce they taste much more like prunes than rhubarb does. Now, uh... Now you tell me what you know.
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Re: 340sb with 5 speed conversion - speedo adapter
[Re: nebo]
#33110
04/15/09 10:29 PM
04/15/09 10:29 PM
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Joined: Sep 2007
Posts: 300 MA
Greg55_99
enthusiast
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enthusiast
Joined: Sep 2007
Posts: 300
MA
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Quote:
Buschi,
I saw a web page where the person replaced the stock mopar slave cylinder with a more rugged metal unit and also added AN fittings and a braided hose, it didn't look too costly. He had the hydraulic setup on a Jeep and kept breaking the plastic slave cylinder when off roading. I will see if I can find the site again and post it if I can find it.
Clair,
I did some research yesterday on pilot bearing dimensions. The Toyota pilot bearing has an ID of 0.472" an OD of 1.260" and a width of 0.394" Timken PN# 201-CC. The pilot bearing Buschi is using Mopar PN# 53009180 has an ID of 0.7718" an OD of 1.8161" and a width of 0.565" it looks like this is also the same OD as the 3rd gen hemi crank with manual transmission. My crank which came out of a car with an auto transmission (2007 Charger) has a bushing installed with an ID of about 1.308", OD of 1.8161". My options as I see them would be to use the Toyota bearing and install it in the bushing with some shim stock between the bearing and bushing to take up the slop, this may or may not work and has the problem of having the Toyota bearing pretty far into the crank pilot bore. The Toyota pilot shaft is already coming up kind of short as far as how far it will protrude into the pilot bore. This problem is solved with Buschi's approach. The other option is along the lines that you were thinking Clair and remove the bushing that is currently in the Crank to open up the OD to 1.8161" and then finding a bushing that I can machine to the proper ID to accept the Toyota pilot bearing. Ideally the bushing would also have a substatial width to locate the Toyota pilot bearing closer to the R154 input shaft. Clair have you identified a bushing yet for your project and if so could you give me a part number?
Thanks everybody for your on going help.
This may be helpful:
http://advanceadapters.com/product/2600/%28P/N-716149-NS%29-Pilot-Bushing-.471-ID-X-1.090-OD.html
It's a GM to Toyota pilot bushing. It's longer than stock:
Greg
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Re: 340sb with 5 speed conversion - speedo adapter
[Re: Buschi340]
#33111
04/15/09 11:17 PM
04/15/09 11:17 PM
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Joined: Sep 2007
Posts: 300 MA
Greg55_99
enthusiast
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enthusiast
Joined: Sep 2007
Posts: 300
MA
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Quote:
Hi clair,
after thousands of miles driven proudly of the conversion the clutch hydraulic makes me worry. It seems that I have either air in the system or it is getting too hot. You know that all parts are made of plastic and are not serviceable.
Clair, I'm looking for another setup. Made of steel / aluminium or similar. Don't have to be a Dodge Part. Is Chevy S10 similar? It should be mounted like the unit I have (would be the easiest)....
Any idea?
Hey Buschi, Take a look at some of the Mercedes units...
http://www.autopartswarehouse.com/replacement_sm/mercedes~clutch_slave_cylinder~replacement.html
Maybe you can match yours up with one of those.
Greg
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