So I’m trying to build a motor… first time for me…
I’m checking my crank clearance, using green plasti-gauge and it appears to be too tight…
.0015 inches on #1
.001 inches on #2
Less than .001 inches on #3, #4, and rear
It’s a stock 302 block, bored over to 306, and I’m installing a Probe Street Fighter 306 bottom end kit (28 oz balance) that came with the crank and bearings. I’m also using ARP bolts for the caps (torqued to 70 ft lbs as per ARP instructions).
From what I’ve read my options are the following,
1. Have the crank measured and turned .001 to provide me with the clearance needed.
2. Have the block line honed and check clearance again
3. Purchas some .001 oversized bearings to provide me with the clearance needed
I’m think of going with option three since it won’t require me taking the block into the machine shop.
I have a spec sheet on the crank and can post any info from that if necessary. Again this is my first attempt at building a motor, sorry if I’ve left any key info out of this post.
Any feedback is appreciated.
Thanks