Machine the counter-bore out to the larger size and use the early flex plate (small bore size) and everything works fine.
DD
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| Early 170 engine crank register mod advise needed https://slantsix.org/forum/viewtopic.php?t=66177 |
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| Author: | lgu32 [ Thu Sep 09, 2021 9:06 pm ] |
| Post subject: | Early 170 engine crank register mod advise needed |
I have early 170 engine and late model 904. There is a fitment problem with converter hub. As the converter is custom piece (small diameter, high stall) I like to keep as is. So I have onlys choice to ask machinist to made my small register 170 crank to perfect fit. I have found a machinist to do it. I am pretty sure that has done before several times. I have calculated there is enough material to do it. Just to the inner hole to 1.81” and add an outer ring for flex plate centering (1.96”/2.16”) Please advice me to topics where this is discussed before. (I am overseas. Slant parts are not laying all around. Was a job to catch 170 bottom end which is not at biggest overbore and ”end”. Now I have a good project engine). |
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| Author: | Doctor Dodge [ Fri Sep 10, 2021 3:23 pm ] |
| Post subject: | Re: Early 170 engine crank register mod advise needed |
Machine the counter-bore out to the larger size and use the early flex plate (small bore size) and everything works fine. DD
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| Author: | Greg Ondayko [ Fri Sep 10, 2021 4:30 pm ] |
| Post subject: | Re: Early 170 engine crank register mod advise needed |
Awesome mod Doc! Thanks for Sharing. Greg |
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| Author: | lgu32 [ Sat Sep 11, 2021 3:03 am ] |
| Post subject: | Re: Early 170 engine crank register mod advise needed |
Thanks! |
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| Author: | lgu32 [ Sat Sep 18, 2021 8:55 pm ] |
| Post subject: | Re: Early 170 engine crank register mod advise needed |
Quote: Machine the counter-bore out to the larger size and use the early flex plate (small bore size) and everything works fine.
One more question. What is the needed size for re-machined counterbore? Is it 1.81" (46,0mm) or 1.815" (46,1mm)?
DD |
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| Author: | Doctor Dodge [ Mon Sep 20, 2021 5:03 pm ] |
| Post subject: | Re: Early 170 engine crank register mod advise needed |
1 13/16 inches = 1.8125 Best to measure the hub on the torque converter and add .002 for clearance. DD |
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