I have purchased what I was led to believe is a 4G64 6 bolt 8 valve wideblock. Unfortunately the crank wasn't in it when I went to pick it up, so I can't verify that. I need to know if it is a wideblock or not and would suite the 4G64+4G63 head build for my starion.
Here is a photo with the measurements between the two bottom bolts.
As you can see, its 340mm between the bottom bolts. Is this a wideblock or a narrow block? Also how can I tell if its a 6 bolt or 7 bolt crank that's required.
I was under the impression that wideblocks are 333mm across middle holes, 127mm top holes (centre to centre). Is this correct?
I took a photo of the head face with a 4G63 DOHC head gasket sitting on there and it all seems to be lining up nice and well except for maybe one hole at the very front of the gasket you can see on the right of the picture next to the cylinder. I have also taken a 3/4 shot for you dave. let me know what you guys think. To me it seems like I got the right block but I want to be sure.
For the U.S. the wideblock is 13 1/4 inches, so the metric converter says 336mm across the bottom pins center to center. so I'd say the 340 is a wideblock considering your eyeball/meaduring device, It's definetly bigger than the the narrow bloks 12 1/2 317mm measurement.
the 6bolt/7 bolt is a bit trickier. I don't have a definitive answer.
Mike M.
#847 F/BMMP
BNI/Sidewinders/ECTA
ECTA Record Holder/Bonneville Record Holder
I have the option to buy a 4G64 crank that hopefully fits this. But should I do that worrying about if it is the correct one or not, or get my hands on a Hyundai block with crank?
