Flexplate Install backwards maybe??? - JeepForum.com
 
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post #1 of 4 Old 07-13-2020, 01:25 PM Thread Starter
Tim_Weaver
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Flexplate Install backwards maybe???

I am restoring my 89 Jeep Wrangler, It's been off the road way tool long (2013). I wrote one of the first articles about putting a 4.0L head on a 258 did a lot of research about this and stroker motors in 1999. I have a new 4.7L Stroker from Titan Engines. Fresh rebuilt automatic transmission. I thought the flexplate would only go on one way. But, the Starter does not engage the flex plate and turn the motor. Is it possible that I have it on backwards? I was unable to find any pictures of flexplate that is attach to a 4.0L. I am using the flexplate from my originial 258. This should work, but again my memory about all this stuff has faded a bit.

I have attached two picture of the flexplate mounted on the motor. This ring gear is on the transmission side of the flexplate. It all fits properly and bolts together. I tore this Jeep down to the frame and rebuilt it. And, it been months since I put the flexplate on. I put the Engine and Tranny in before I put the body back on the frame.

Should the ring gear be on the transmission side or the engine side. If I flip it that would put the ring gear next to the engine. Any on have one they can look at and tell me which is right?

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post #2 of 4 Old 07-13-2020, 04:26 PM
ashtodust2000
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The ring gear goes toward the engine.

Bruiser 94 Jeep Wrangler YJ
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post #3 of 4 Old 07-13-2020, 04:41 PM Thread Starter
Tim_Weaver
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I was afraid of that. Thanks. I was getting ready to pull the tranny.
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post #4 of 4 Old 07-13-2020, 09:48 PM Thread Starter
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I had it mount correctly. It can't be turned around because it's against the block and the spacer makes no difference.

Not sure I understand why yet. It's is the same transmission, flexplate and starter. The stroker motor should have a 258 crankshaft. There must be a difference in a 4.0L block and a 4.2L/258.
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