Do you have the ability to measure the dimensions on the starter nose extension? i.e. dimensions a.aaa, b.bbb, c.ccc etc in this sketch.

Going to do the dye test on the nose today and determine how deep the nose is going in.
I suspect that this Ultra bell has to come off.

I measured two Mopar mini starters and the nose is 0.996-0.998" OD with a large bevel at the tip. A hole 1.000" should accept the starter, but the tolerance might be little tight.

This is my first est for the PG crowd needing the nose extension.

.aaa looks like


.bbb looks like .4495


.ccc here


If you need any more let me know

we had to grind down the starter nose pretty good before it sat flush on the JW. Mopar Dakota mini starter from Napa.. maybe 1/4 inch or more

Wish you were closer to me. I would love to see this deal. Not the first time I would see the need to make adjustments on a jw part.

Most of these parts are built around something else. I suspect this bell was built with the idea of using with a flexplate using a 130 starter gear on plate. With shim spacers the starter would be perfect. So they never realized the nose didn't fit the receiver in bellhousing. Then you use a gm style converter with no starter gear.

The other guess is this was made using a .090 or .250 midplate that had a starter hole in it aligning the starter.

You can always use a Reid bell with A-1 adapter ring. I think it works with starter against bell. With starter ring on flexplate it requires a 1/4" midplate with starter hole in midplate. More expensive but fits.

Amazing what you learn designing bells for one off Mopars. Lol

I'd be surprised if it was .020". I just remember thinking "are you f'ing kidding me"? Before pulling the trans off the engine. I was not impressed with the ultra-bell at all.

Maybe a cartridge roll on a die grinder would open it up enough.

I was using it to run a 518 in my car- just a heads up- you need a 10" converter to fit in the bell

10" or smaller correct ? i was thinking the same.

Thanks.
It looks like it might be a little thin in the area with the red circle (0.371-0.350 = 0.021"). Is that hole flat on the bottom or does it have a drill bit angle?
What is the small ID hole (g.ggg)?
And since posters have mentioned fit problems, what did JW do for the OD (f.fff)?

Im no machinist but heres what i come up with yes it looks as if they used some kind of a drill bit for .ccc because its camfered or counter sunk in the red area

So the transmission is out and fitted the starter to the ultrabell. The nose hole in the ultrabell is too small, so I opened it up slightly and it fits now.
But..... I bolted up the transmission to the block and the starter wont go in all the way again. Its closer to the bellhousing but still not there. Maybe a 1/4" off.
So I pulled out transmission again, grinded on block a little and still wont go in. I don't see any obstruction anywhere. I'm ready to get another case and sell this thing. What a nightmare.

Even with an oe small starter I had to hit the starter cutout in the block with a carbide burr to make room on my 440 even with a 727 stock case. Another option is the 05 ram 5.7L man trans starter which is even smaller than the standard "mini-starter". It looks like it should be for a riding lawnmower but it works great.

Manual starter? For what size dodge Ram truck? I'm ready to go to Autozone and try one. I don't have a lot of compression so it bet it will work. Both mini starters are not fitting that I have.

Well 7 hours hours later the transmission is in. Did what you said and had to grind a little more on the starter cutout. It needs a little more but I put bolts in and tightened them up evenly and slowly and it went right in.

I will never buy another JW Ultrabell ever again. This was the worst experience ever and they are not cheap. And the lower engine mount hole had to be retapped to boot.

Thankyou for all your help.

Just another day at the office for anyone trying to drag race a Chrysler product.

I hear ya but this was ridiculous.
This should have been a 1.5 hour job, start to finish.
Well at least my starter works. Tomorrow add fluid and I'm ready.

I got lucky on mine. I had my engine out and trial fitted the engine, 'bell, and starter. I had to grind the crap out of the block (World), install the big wire on the starter before mounting it, and had to massage the starter to fit the 'bell.

It would have been a real b!tch if the engine had been in the car. I am really tired of expensive parts that don't fit or need mods to work.

There's a small obstruction somewhere that's slightly hitting but it went in, with just slight pressure. Not 100% but after it comes out again, I'll see where its hitting and then correct it.