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W series Toyota trans adaptors


bill hincher
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lets have some fun >;o)

one of your fearless members asked me about a bellhousing to mate the Sub engine to a purely RWD unit, preferably the Toyota W series transmission, I thought it was a neet idea

the only trouble was is that my main man mellow65 lived a cool 1500 miles away from me, so he sent me some material in the mail

 

01Subw55.jpg

the first thing I did was to square the rear of the housing so i could set it on its back and get my centers

02Subw55.jpg

then I cleaned out the center section so I could indicate my centers

04Subw55.jpg

this one number is critical to the datum lines

 

03Subw55.jpg

then I could cut down the rear of the housing to the right length for the input shaft

 

 

05Subw55.jpg

after all that, a datum plate had to be built to hold everything in place while building the pattern, the bolt pattern is built into this datum plate and a center locater is placed in it

06Subw55.jpg

the existing belhousing is bolted to the datum plate

07Subw55.jpg

then a center dowel is placed off the datum

08Subw55.jpg

then the front plate removed from a W 58 Toyota trans is attached to the center

09Subw55.jpg

and that gives you a roughed in sketch to work with to build a pattern

10Subw55.jpg

the next step is to build the back plate on the bellhousing

11Subw55.jpg

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I want to use a married toyota transfer case for a lifted subaru. Sami cases are weak, and 720's are getting hard to find........and the whole deal is longer than a married unit.

 

Crawler kit in the T-case and 4.44 LSD difs front and rear.

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  • 2 months later...
  • 2 weeks later...

sorry about the late reply, yes, I been puttering with my little Sub project.

I build a variety of housings and ship around the world and get a bit distracted

This is for the T 56 to the narrow block 4G63 Mits engine

T56bellhousing0102.jpg

This fits the R 154 to either the wide block or the narrow block or the EVO's Mits engine

75rethinkingr154.jpg

 

sometimes I can dream, sometimes I can invent and sometimes I can build, but it dont work like an assembly line, sucsess is usually a series of small failures >;o)

Edited by bill hincher
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  • 2 weeks later...

after the bellhousing was measured and cut down to size, the back of the new housing was squared with the front of the housing

 

subtoyadaptor.JPG

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then the new trans facing was put into place and indexed to the proper angle

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the facing was ancored and the lower skirt was decided on for the proper drafting while casting

subtoyadaptor5.JPG

 

 

 

 

then each panel is cut out and replaced to build a conforming justure from the front of the housing to the trans mounting surface

subtoyadaptor11.JPG

subtoyadaptor12.JPG

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I cut out the clutch controls and the starter bagage, then reconsruted it to size

 

 

subtoyadaptor14.JPG

there are two trans bolt patterns fit into the trans facing, one is for the W series Toyota trans, the other is for the R series Toyota trans, that way it will offer more selection for what you want to do

subtoyadaptor15.JPG

I like to build a little cleaner looking sides and improve the draft lines for the casting shop

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its important to visualize when reconstructing the starter pocket, that this will shrink by 1% in all directions , so this pattern must be adjusted to a larger size then expected

subtoyadaptor17.JPG

I am going to leave the clutch controls alone until I assemble the whole unit and test the throw out bearing operation, the measurements are just too critical at this point to make a mistake

 

subtoyadaptor20.JPG

the trans bolt pattern is not traced out for looks, I build a wide bolt flange landing before the bellhousing walls are built as a guide, I need to know the bolt pattern before I can add structure gussets from the side wall down to the trans face plate

subtoyadaptor21.JPG

looks like this bellhousing is tired of all the surgury >;o)

subtoyadaptor22.JPG

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I went out and bought a Sub core motor for mock up

 

subtoyadaptor26.JPG

 

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I built a rotisary to be able to move the engine in any position and make adjustments as the build proceeds

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I mounted up an R 150 Toyota trans to check input shaft length and some cenetering, it looks like it is coming along nicely

subtoyadaptor33.JPG

subtoyadaptor34.JPG

subtoyadaptor35.JPG

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This is awesome!!! Are you going to be selling these?

 

kinda the idea, yea, once I get done building them:)

 

depending on the throw out bearing the cost should be in the mid $300.00 range

 

the design hopes to use all Sub hardware , like clutch fork, pivot ball and slave cylinder flywheel. starter and pressure plate with just a Toyota disc to finish the build

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