2V to Crossflow C4 Flexplate

It looks like I'll be changing a 250 2V to a Crossflow.

The question is will the C4 Flexplate on the 2V bolt onto the Crossflow?

Yes, no worries. The crank is basically the same.

Yay!! - I thought you'd know Addo

In fact, I very nearly addressed this thread to you

UNLESS.........

if its an unleaded crank, it will have smaller (metric) bolts. The pattern is still the same but it's not good practice to have them not a snug fit.

I had thought they didn't go metric bolts until the E-series.

BTW, going to send you a sample of some brake bits I'm chasing...

Hmmm - all my spare Crossflows are unleaded engines...

So can I get a C4 Flexplate to suit one of those cranks??

In a word, no.
Aussie cars never had a C-seies auto behind an unleaded crank, so it makes it a bit hard to get the right flex.
One way around it is to make up some small collars that will take out the slop, or better still have some metric bolts machined at the base of the head which will snug fit the flex.
I've also seen an unleaded flexplate centre cut out and welded back to back, to the c4 flex.

addo":33st0hzi said:

I had thought they didn't go metric bolts until the E-series.

BTW, going to send you a sample of some brake bits I'm chasing...

Click to expand...

Nah Adam, XF.

Sending brakes to me or Les?

Sending you a slave cyl pushrod (XB rear piston-shoe) sample. Mine are flogged out.

I'll wrap $20 in the envelope for P&P plus a few coldies.

hey
i have a 164 tooth flexplate and convertor am i going to be able to get the convertor to work behind my 250 or am i going to need to buy another one?
sorry to steal the thread!
thanks
Brendan

xdee":166npap8 said:

UNLESS.........

if its an unleaded crank, it will have smaller (metric) bolts. The pattern is still the same but it's not good practice to have them not a snug fit.

Click to expand...

The metric bolts came in some time in '87.
So some unleaded engines have imperial bolts.