The not-so-definitive guide to Sienna seats

[zoomiefoosh]

Did anyone start manufacturing the Sienna seat bases now that both UJoint and ExpoVans no longer do? It’s frustrating that I’m about a year late…

 

[Bulldoug]

Did anyone start manufacturing the Sienna seat bases now that both UJoint and ExpoVans no longer do? It’s frustrating that I’m about a year late…

Same here - Ended up making my own, wasn't horrible. need to get them powder coated still.

Db

 

[zoomiefoosh]

Is anyone willing to share pictures and measurements for those of us that want to make our own? Just so we aren’t starting at square-one. I was thinking of trying to get something done up through SendCutSend.

 

[zoomiefoosh]

The BaseFab ones looked amazing

 

[Geoexplorer90]

Just managed to get my fron Sienna chair to swivel with the scopema swivel for a Transit. Took some work.

I believe the original base was Ujoint. Not 100% though View attachment IMG_1525.jpeg

 

[gator70]

If we make our own seat mounts we can sell them (not as business, rather to pay for jigs). Anyone interested?

 

[Bulldoug]

Ended up finally spending some time on the fronts as well. Ended up finding another set of grey leather Sienna seats (match the highlights on the Sienna lazy boys in my second row). Once you pull off the Ford sliders, the sienna factory studs are just outside the measurement of the Ford bases. I used a 3/16 steel plate, bolted it to the ford base (offset slightly) and drilled for sienna pattern. Swapped the pretensioners to the sienna seats.

 

[gator70]

Thanks for the info. Each rig will be different. What is the bolt pattern on the seats?

 

[Bulldoug]

Thanks for the info. Each rig will be different. What is the bolt pattern on the seats?

You mean the sienna seat studs spacing measurements?