Dumbo The Flying Elephant

Larry Hill · 05-16-2020, 07:47 AM

I think after two years and 74 days, if everything goes well, the car should be ready to go don the track with everything working, I hope. I am so ready to see its first long track time ticket.

Larry Hill · 05-17-2020, 08:28 AM

The car came with two converters and for the first testing of the car I chose my backup converter for the pink car. I did find out what does't work. After finding out about the converters from the manufacture I chose "B" , "A " did not work, and "C" is suppose to be the loosest.

Incoming QC on "B":
In one threaded hole the treads are almost gone, but will still take the torque. The other three bolt holes are good. Check bolt circle against a factory and certified flexplate only three of the four will install. Odd man out was the bad hole. Previously marked on ring gear are are indicator readings -0.010 to +0.011. This is not what you want to see. The more I inspect the greater the disappointment. The best I can tell is the attachment bolt circle and the snout are not concentric and are off approximately .024". The snout showed signs of fretting on the location bore on the back I.D. of the crank. The fret mark supported my discovered offset. I bet the misalignment had to bad for the pump and the front bushing.

Incoming QC on "C"
It looked much better. All bolts installed on test flexplate with only a .005" diameter difference from snout to flexplate clearance side to side. Only minor fretting on snout. Install converter in trans, install trans, install three converter bolts and the fourth will not start. Patsy calls me to supper and I end my day. Thank goodness!

I learned a lot but did not reach my goal. I may or may not get it done today, but at 2:30 PM CDT we are watching the NASCAR race.

Y'all stay safe

pmrphil · 05-17-2020, 08:57 AM

I imagine you've tried to rotate the converter?

Larry Hill · 05-17-2020, 09:54 AM

On a Mopar it will only bolt up one way without a lot of clearance

gmonde · 05-17-2020, 10:06 AM

what transmission are you using?on my 904 the converter has to be clocked to match the flex plate,, gmonde

Larry Hill · 05-17-2020, 10:36 AM

SB 727, all converters I have seen are the same for the B, RB, and SB 727

Hacksaw · 05-17-2020, 10:46 AM

Sounds like the holes in the flexplate are off, check that?

05-16-2020, 07:47 AM	#1
Larry Hill Live Reporter Join Date: Oct 2004 Location: Hickory, Ky Posts: 10,650 Likes: 1,942 Liked 10,769 Times in 2,238 Posts	Re: Dumbo The Flying Elephant I think after two years and 74 days, if everything goes well, the car should be ready to go don the track with everything working, I hope. I am so ready to see its first long track time ticket. __________________ IHM Used Parts https://ihmusedparts.com 888-821-1817 Last edited by Larry Hill; 05-16-2020 at 09:39 AM.

05-17-2020, 08:28 AM	#2
Larry Hill Live Reporter Join Date: Oct 2004 Location: Hickory, Ky Posts: 10,650 Likes: 1,942 Liked 10,769 Times in 2,238 Posts	Re: Dumbo The Flying Elephant The car came with two converters and for the first testing of the car I chose my backup converter for the pink car. I did find out what does't work. After finding out about the converters from the manufacture I chose "B" , "A " did not work, and "C" is suppose to be the loosest. Incoming QC on "B": In one threaded hole the treads are almost gone, but will still take the torque. The other three bolt holes are good. Check bolt circle against a factory and certified flexplate only three of the four will install. Odd man out was the bad hole. Previously marked on ring gear are are indicator readings -0.010 to +0.011. This is not what you want to see. The more I inspect the greater the disappointment. The best I can tell is the attachment bolt circle and the snout are not concentric and are off approximately .024". The snout showed signs of fretting on the location bore on the back I.D. of the crank. The fret mark supported my discovered offset. I bet the misalignment had to bad for the pump and the front bushing. Incoming QC on "C" It looked much better. All bolts installed on test flexplate with only a .005" diameter difference from snout to flexplate clearance side to side. Only minor fretting on snout. Install converter in trans, install trans, install three converter bolts and the fourth will not start. Patsy calls me to supper and I end my day. Thank goodness! I learned a lot but did not reach my goal. I may or may not get it done today, but at 2:30 PM CDT we are watching the NASCAR race. Y'all stay safe __________________ IHM Used Parts https://ihmusedparts.com 888-821-1817

05-17-2020, 08:57 AM	#3
pmrphil Member Join Date: Aug 2010 Location: CT Posts: 460 Likes: 1,815 Liked 348 Times in 152 Posts	Re: Dumbo The Flying Elephant I imagine you've tried to rotate the converter? __________________ Phil Molski PMR Performance S/C 1623

05-17-2020, 09:54 AM	#4
Larry Hill Live Reporter Join Date: Oct 2004 Location: Hickory, Ky Posts: 10,650 Likes: 1,942 Liked 10,769 Times in 2,238 Posts	Re: Dumbo The Flying Elephant On a Mopar it will only bolt up one way without a lot of clearance __________________ IHM Used Parts https://ihmusedparts.com 888-821-1817

05-17-2020, 10:06 AM	#5
gmonde Senior Member Join Date: Nov 2007 Posts: 615 Likes: 56 Liked 165 Times in 59 Posts	Re: Dumbo The Flying Elephant what transmission are you using?on my 904 the converter has to be clocked to match the flex plate,, gmonde

05-17-2020, 10:36 AM	#6
Larry Hill Live Reporter Join Date: Oct 2004 Location: Hickory, Ky Posts: 10,650 Likes: 1,942 Liked 10,769 Times in 2,238 Posts	Re: Dumbo The Flying Elephant SB 727, all converters I have seen are the same for the B, RB, and SB 727 __________________ IHM Used Parts https://ihmusedparts.com 888-821-1817

05-17-2020, 10:46 AM	#7
Hacksaw Senior Member Join Date: Sep 2016 Posts: 884 Likes: 209 Liked 311 Times in 175 Posts	Re: Dumbo The Flying Elephant Sounds like the holes in the flexplate are off, check that?

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