JW Flexplate Install

Brandon706

Member
Can someone tell me which side the flexplate attaches to the crank. The flexplate doesn't have the raised areas like the chevy engines I am use to installing. Thanks
 

pacecarta

LOGGED OUT
Staff member
it can only bolt on one way, the bolt pattern looks even spaced but its not

look at ring gear attachment and the side that the disc is closest to edge of ring gear is toward transmission
 

WPP-Bill

Member
Can someone tell me which side the flexplate attaches to the crank. The flexplate doesn't have the raised areas like the chevy engines I am use to installing. Thanks
Here's a pic:

jwwheel.jpg


You may have to use a file to slightly open up a hole as alignment is often an issue.
 

turbodave231

Moderator
You may have to use a file to slightly open up a hole as alignment is often an issue.
It seem like every JW wheel I've bought has this problem. Is it the flywheel or the aftermarket cranks?
 

Dusty Bradford

Well-Known Member
It seem like every JW wheel I've bought has this problem. Is it the flywheel or the aftermarket cranks?
We always have issues with JW stuff. Bolt holes not lining up is a common issue. This is also why we don't use their SFI cases for glides and T400 builds.

As for the Chinese cranks....that's another issue. Many times the pilot size is off or not deep enough and even the crank flange is moved which will cause issues with converter spacing. If it makes you feel any better, the BMS cranks had pilot sizing issues as well.


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turbodave231

Moderator
Thanks for the info Dusty. It is a problem that I have often run into, but never heard anyone complain about. I wish i had access to a CMM to find out who is really at fault.


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Mike T

Well-Known Member
The JW plate in my car lined up fine on the stock crank. We did have another JW plate that had the weight welded to the wrong side (converter wouldn't mount flush) so we cut it off and moved it.
 

ek02

Well-Known Member
I had the same problem with a JW flywheel. One bolt hole was off. I tried a stock flywheel on my Chinese stroker crank. It was not the crank. The stocker bolted right up. I don't mind buzzing the hole out a litle, but for what the JW costs, it should fit. The 50.00 CAT flywheels always bolted right up.
 

turbobitt

Well-Known Member
Both my JW flywheels fit. One on a BMS crank, the other on a Crower billet.
AG


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C

coach

Guest
There was a note in the box of my JW that said to open up the holes to 7/16 diameter.
We did not find it until after we were cussing like crazy because it did not fit.
 

Brandon706

Member
There was a note in the box of my JW that said to open up the holes to 7/16 diameter.
We did not find it until after we were cussing like crazy because it did not fit.
Which bolt holes? I am having trouble getting the bolt holes to line up to the crank
 

Mike T

Well-Known Member
Oh...my issue was torque conv bolts. Sorry

I had to drill mine also because the converter that was used required larger than stock bolts. I didn't catch the problem until the transmission was back in the car and you can't get a straight shot at the holes with a regular drill.
 
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