Join Date: Sep 2005
Location: South Australia
Re: Flex plate/ fly wheel bolts...What the??
Unfortunately these blocks are actually different. Another post mentioned that Pre XR was one configuration, and post XR was your configuration..
They look the same, and take the same head, lifters etc etc, but the crank is completely different and sits higher in the block.
I found this out the hard way trying to install a gear drive that I bought.
I cant fit the gear drive because the idler wheel fouls the crank.
Shame really as if I'd known I would have bought the "better" block as then I could have fit all the 250 parts and not had a problem. As it stands I couldnt even get a high volume oil pump! No one made them. I had to get a "new" standard one from Mellings. Luckily the cam manufacturer recommends not running a high volume pump as its a waste of power!?!
I then bought a Rollmaster set, but the person in the shop sold me a 250 kit with 1 key way, when I explicitely asked for a 7 keyway 200 set and thus it doesnt fit..
So now I have a brand new gear drive, and a brand new economy rollmaster set lying around my shed.. $650 later I know that there are differences between these blocks.
The frustrating this is that I cant finish off my engine because I need the timing chain to degree my cam, so I cant put my lifters, head, timing cover or sump on. ..
Its just one bolt that is different and I only noticed because I spent 3 weeks polishing them. If I had been less attentive to the bolts I probably wouldnt have noticed...
I think you probably dont have this bolt thingo though because your block is different and thus you have a different crank...
Do you have a rope seal on the back of your block or a 1 piece rubber seal?