Are the NA and turbo bellhousings the same or is there any difference?

I am talking about the bellhousings only, nothing more.

Thanks.

 

aside from the fact that the n/a housing is part of the transmission? not a whole lot, they bolt up the same but the dimensions for the input shaft and throwout are different. you just have to use the clutch and hydraulics for the appropriate transmission as well as the flywheel for the transmission you're using.

 

Thanks for answering my stupid question. When I looked up a picture of both boxes it was very clear.

 

the starter bolt pattern is different.

 

The TII bellhousing is a larger diameter, even though the engine bolt pattern is the same. A TII flywheel will not fit inside a NA bellhousing. A NA flywheel will fit inside a TII bellhousing, but you need to mill the bellhousing and pivot the starter to allow a bottom-mount starter to engage the flywheel teeth. The 74-78 NA bellhousings are removable.

 

Thanks for the clarification. Any more guidance is appreciated....

I'm trying to mate a Jerico to a 13b NA. I bought a "complete package" deal but the bellhousing was broke and I want to change out the clutch that came with it.


I'd like to keep the aluminum flywheel I have, switch to an Act Xtreme PP (225mm NA) and will need an 18 spline 1 13/16" 4 puck disk.


Does it matter between S4 or S5 TII bellhousing? I need to buy one as the one that came with my package was broke.

Besides moving the starter bolt hole, everything else should fit just fine, correct? I can use all the normal NA parts I assume?

 

I don't believe theirs a difference between a S4 or S5 bell housing. Is your flywheel stepped? The N/A flywheel is a stepped flywheel.

 

On another thread here, someone said the number of bolts that bolt it to the transmission are different between S4 and S5, I don't know - looking for more clarification https://www.rx7club.com/parts-wanted-283/tii-bellhousing-only-2ndgen-907600/. My flywheel is a Centerforce 800822, similar to stock but aluminum.

 

His knowledge is usually spot on, so I would go with yes there's a difference on the connection from the bell housing to the transmission.

That flywheel does look like it should be a N/A stepped flywheel.

 

here is an s4 t2 bellhousing...


and an s5 t2...


this site is helpful: http://www.16paws.com/rx7/index.html

 

Yes, I think the Jericho works with the Chrysler 18-spline disks. The NA-sized flywheel is good because it will have less inertia than a TII-sized flywheel. You may need to get a different flywheel that is designed to work with 7.25" or 5.5" racing clutch disks, but I am not sure about that. You may want to contact somebody on this forum who is using a Jericho transmission to see what they are using.

As I recall, the Jericho transmissions work with any of the rotary engine bellhousings, but my information could be bad or out of date. I suggest checking with Jericho or Taylor Race Engineering to see what fits on your particular transmission.
http://www.taylor-race.com/

Well, my car has a NA-sized flywheel with a TII transmission. The TII bellhousing was milled and the TII starter was pivoted and re-pinned by my fabricator so it could engage the flywheel. He made it such that the starter could be pivoted back to the original position if I want to use a TII-sized flywheel. I am not sure what other options there are.

What I can tell you is that the stock starter is NOT centered in the bellhousing hole as you may think, so tell your fabricator to not use that as a reference point.