Is my flexplate spacer in the correct spot? Th350, pic inside
#22
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OK, I'm a little aggravated since every penny I've ever spent on a torque converter has brought me issues. Took some measurements and here is what I come up with:
Converter pilot length total: .500''
Converter pilot length past pads: .0250"
Dish flexplate + no spacer = pilot into the crank ~.125" which just barely hits the taper
.250"(length of pilot past pads) -.125" (flexplate thickness)
Dish flexplate + spacer = pilot bottoms out on the converter, pushes converter into the pump, and has ~.150 gap between the converter pads and flexplate
spacer + flat flexplate = pilot bottoms out on the converter, will likely push the converter into the pump, and has a .025 to .50 gap between the converter pads and flexplate
No .400" spacer of any kind on the pilot will work because of this bastard on the converter:
So to machine this spacer to the proper SBC spec of .250" of the pilot into the crank(which is half of the total snout length), then I would have to machine a spacer that is the thickness of the flexplate(.125") and fits WITHIN the hub of the flexplate. Even then I will have only .125" of spacer, and .125" on tapered crank area that contact the pilot. Which isn't right IMO.
Coincidentally, the guy who listed the TCI part number above(http://www.summitracing.com/parts/TCI-399753/) does exaclty that. Except it cost more then my torque converter.
So, thats what I get for assuming most sbc torque converters would fit with the spacer method that was previously used.........
Converter pilot length total: .500''
Converter pilot length past pads: .0250"
Dish flexplate + no spacer = pilot into the crank ~.125" which just barely hits the taper
.250"(length of pilot past pads) -.125" (flexplate thickness)
Dish flexplate + spacer = pilot bottoms out on the converter, pushes converter into the pump, and has ~.150 gap between the converter pads and flexplate
spacer + flat flexplate = pilot bottoms out on the converter, will likely push the converter into the pump, and has a .025 to .50 gap between the converter pads and flexplate
No .400" spacer of any kind on the pilot will work because of this bastard on the converter:
So to machine this spacer to the proper SBC spec of .250" of the pilot into the crank(which is half of the total snout length), then I would have to machine a spacer that is the thickness of the flexplate(.125") and fits WITHIN the hub of the flexplate. Even then I will have only .125" of spacer, and .125" on tapered crank area that contact the pilot. Which isn't right IMO.
Coincidentally, the guy who listed the TCI part number above(http://www.summitracing.com/parts/TCI-399753/) does exaclty that. Except it cost more then my torque converter.
So, thats what I get for assuming most sbc torque converters would fit with the spacer method that was previously used.........
#23
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OK, I'm a little aggravated since every penny I've ever spent on a torque converter has brought me issues. Took some measurements and here is what I come up with:
Converter pilot length total: .500''
Converter pilot length past pads: .0250"
Dish flexplate + no spacer = pilot into the crank ~.125" which just barely hits the taper
.250"(length of pilot past pads) -.125" (flexplate thickness)
Dish flexplate + spacer = pilot bottoms out on the converter, pushes converter into the pump, and has ~.150 gap between the converter pads and flexplate
spacer + flat flexplate = pilot bottoms out on the converter, will likely push the converter into the pump, and has a .025 to .50 gap between the converter pads and flexplate
No .400" spacer of any kind on the pilot will work because of this bastard on the converter:
So to machine this spacer to the proper SBC spec of .250" of the pilot into the crank(which is half of the total snout length), then I would have to machine a spacer that is the thickness of the flexplate(.125") and fits WITHIN the hub of the flexplate. Even then I will have only .125" of spacer, and .125" on tapered crank area that contact the pilot. Which isn't right IMO.
Coincidentally, the guy who listed the TCI part number above(http://www.summitracing.com/parts/TCI-399753/) does exaclty that. Except it cost more then my torque converter.
So, thats what I get for assuming most sbc torque converters would fit with the spacer method that was previously used.........
Converter pilot length total: .500''
Converter pilot length past pads: .0250"
Dish flexplate + no spacer = pilot into the crank ~.125" which just barely hits the taper
.250"(length of pilot past pads) -.125" (flexplate thickness)
Dish flexplate + spacer = pilot bottoms out on the converter, pushes converter into the pump, and has ~.150 gap between the converter pads and flexplate
spacer + flat flexplate = pilot bottoms out on the converter, will likely push the converter into the pump, and has a .025 to .50 gap between the converter pads and flexplate
No .400" spacer of any kind on the pilot will work because of this bastard on the converter:
So to machine this spacer to the proper SBC spec of .250" of the pilot into the crank(which is half of the total snout length), then I would have to machine a spacer that is the thickness of the flexplate(.125") and fits WITHIN the hub of the flexplate. Even then I will have only .125" of spacer, and .125" on tapered crank area that contact the pilot. Which isn't right IMO.
Coincidentally, the guy who listed the TCI part number above(http://www.summitracing.com/parts/TCI-399753/) does exaclty that. Except it cost more then my torque converter.
So, thats what I get for assuming most sbc torque converters would fit with the spacer method that was previously used.........
#26
FormerVendor
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http://www.sonnax.com/parts/1059
Weld this extension from the center of the converter pilot. They are .190 thick, might need two. You can use the crank adapter you have now to center them.
Chris
Weld this extension from the center of the converter pilot. They are .190 thick, might need two. You can use the crank adapter you have now to center them.
Chris
#27
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http://www.sonnax.com/parts/1059
Weld this extension from the center of the converter pilot. They are .190 thick, might need two. You can use the crank adapter you have now to center them.
Chris
Weld this extension from the center of the converter pilot. They are .190 thick, might need two. You can use the crank adapter you have now to center them.
Chris
Do you have to be a member to order from their site? It doesn't give me a price, and wont allow me to add any to the cart. Also, any other source I may be able to find it from if I cant order directly from sonnax?
#28
FormerVendor
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You are absolutely my hero. Thanks for all the help.
Do you have to be a member to order from their site? It doesn't give me a price, and wont allow me to add any to the cart. Also, any other source I may be able to find it from if I cant order directly from sonnax?
Do you have to be a member to order from their site? It doesn't give me a price, and wont allow me to add any to the cart. Also, any other source I may be able to find it from if I cant order directly from sonnax?
713-895-8834
Chris
#32
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Saw I never updated this for you Chris. Everything worked out perfectly, and the new converter took 3/10's off my 60', and has been going strong with the pilot extensions for over a year. Thanks again.
#33
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Awesome results with the FTI converter!
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FTI COMPETITION CONVERTERS AND TRANSMISSIONS
"IT'S NOT CHEATING, IT'S THE COMPETITIVE EDGE."
1-866-726-8358
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FTI Converter build sheet
FTI COMPETITION CONVERTERS AND TRANSMISSIONS
"IT'S NOT CHEATING, IT'S THE COMPETITIVE EDGE."
1-866-726-8358
info@ftiperformance.com
FTIPerformance.com
FTI Converter build sheet